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java.lang.Object org.hsqldb.jdbc.jdbcResultSet
A table of data representing a database result set, which is usually generated by executing a statement that queries the database.
A ResultSet
object maintains a cursor pointing
to its current row of data. Initially the cursor is positioned
before the first row. The next
method moves the
cursor to the next row, and because it returns false
when there are no more rows in the ResultSet
object,
it can be used in a while
loop to iterate through
the result set.
A default ResultSet
object is not updatable and
has a cursor that moves forward only. Thus, you can
iterate through it only once and only from the first row to the
last row. It is possible to
produce ResultSet
objects that are scrollable and/or
updatable. The following code fragment, in which con
is a valid Connection
object, illustrates how to make
a result set that is scrollable and insensitive to updates by others,
and that is updatable. See ResultSet
fields for other
options.
Statement stmt = con.createStatement( ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE); ResultSet rs = stmt.executeQuery("SELECT a, b FROM TABLE2"); // rs will be scrollable, will not show changes made by others, // and will be updatableThe
ResultSet
interface provides
getter methods (getBoolean
, getLong
,
and so on) for retrieving column values from the current row.
Values can be retrieved using either the index number of the
column or the name of the column. In general, using the
column index will be more efficient. Columns are numbered from 1.
For maximum portability, result set columns within each row should be
read in left-to-right order, and each column should be read only once.
For the getter methods, a JDBC driver attempts
to convert the underlying data to the Java type specified in the
getter method and returns a suitable Java value. The JDBC specification
has a table showing the allowable mappings from SQL types to Java types
that can be used by the ResultSet
getter methods.
Column names used as input to getter methods are case insensitive. When a getter method is called with a column name and several columns have the same name, the value of the first matching column will be returned. The column name option is designed to be used when column names are used in the SQL query that generated the result set. For columns that are NOT explicitly named in the query, it is best to use column numbers. If column names are used, there is no way for the programmer to guarantee that they actually refer to the intended columns.
A set of updater methods were added to this interface in the JDBC 2.0 API (JavaTM 2 SDK, Standard Edition, version 1.2). The comments regarding parameters to the getter methods also apply to parameters to the updater methods.
The updater methods may be used in two ways:
ResultSet
object, the cursor can be moved backwards
and forwards, to an absolute position, or to a position
relative to the current row.
The following code fragment updates the NAME
column
in the fifth row of the ResultSet
object
rs
and then uses the method updateRow
to update the data source table from which rs
was
derived.
rs.absolute(5); // moves the cursor to the fifth row of rs rs.updateString("NAME", "AINSWORTH"); // updates the //NAME
column of row 5 to beAINSWORTH
rs.updateRow(); // updates the row in the data source
ResultSet
object has a special row associated with
it that serves as a staging area for building a row to be inserted.
The following code fragment moves the cursor to the insert row, builds
a three-column row, and inserts it into rs
and into
the data source table using the method insertRow
.
rs.moveToInsertRow(); // moves cursor to the insert row rs.updateString(1, "AINSWORTH"); // updates the // first column of the insert row to beAINSWORTH
rs.updateInt(2,35); // updates the second column to be35
rs.updateBoolean(3, true); // updates the third row totrue
rs.insertRow(); rs.moveToCurrentRow();
A ResultSet
object is automatically closed when the
Statement
object that
generated it is closed, re-executed, or used
to retrieve the next result from a sequence of multiple results.
The number, types and properties of a ResultSet
object's columns are provided by the ResulSetMetaData
object returned by the ResultSet.getMetaData
method.
A ResultSet
object generated by HSQLDB is by default of
ResultSet.TYPE_FORWARD_ONLY
(as is standard JDBC behavior)
and does not allow the use of absolute and relative positioning
methods. However, since 1.7.0, if a statement is created
with:
Statement stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);then the
ResultSet
objects it produces support
using all of the absolute and relative positioning methods of JDBC2
to set the position of the current row, for example:
rs.absolute(5); String fifthRowValue = rs.getString(1); rs.relative(4); String ninthRowValue = rs.getString(1);Note: An HSQLDB
ResultSet
object persists, even after its
connection is closed. This is regardless of the operational mode of
the Database
from which it came. That is, they
persist whether originating from a Server
,
WebServer
or in-process mode Database.
Including HSQLDB 1.7.2, there is no support for any of the methods
introduced in JDBC 2 relating to updateable result sets. These methods
include all updateXXX methods, as well as the insertRow()
,
updateRow()
, deleteRow()
, moveToInsertRow()
(and so on)
methods; invoking any such method throws an SQLException
stating that the operation is not supported.
JRE 1.1.x Notes:
In general, JDBC 2 support requires Java 1.2 and above, and JDBC 3 requires Java 1.4 and above. In HSQLDB, support for methods introduced in different versions of JDBC depends on the JDK version used for compiling and building HSQLDB.
Since 1.7.0, it is possible to build the product so that
all JDBC 2 methods can be called while executing under the version 1.1.x
Java Runtime EnvironmentTM.
However, some of these method calls require int
values that
are defined only in the JDBC 2 or greater version of the
ResultSet
interface. For this reason, when the
product is compiled under JDK 1.1.x, these values are defined here, in this
class.
In a JRE 1.1.x environment, calling JDBC 2 methods that take or return the
JDBC2-only ResultSet
values can be achieved by referring
to them in parameter specifications and return value comparisons,
respectively, as follows:
jdbcResultSet.FETCH_FORWARD jdbcResultSet.TYPE_FORWARD_ONLY jdbcResultSet.TYPE_SCROLL_INSENSITIVE jdbcResultSet.CONCUR_READ_ONLY // etc.However, please note that code written in such a manner will not be compatible for use with other JDBC 2 drivers, since they expect and use
ResultSet
, rather than jdbcResultSet
. Also
note, this feature is offered solely as a convenience to developers
who must work under JDK 1.1.x due to operating constraints, yet wish to
use some of the more advanced features available under the JDBC 2
specification.
(fredt@users)
(boucherb@users)
jdbcStatement.executeQuery(java.lang.String)
,
jdbcStatement.getResultSet()
,
ResultSetMetaData
Extensively rewritten and extended in successive versions of HSQLDB.Field Summary | |
static int |
CLOSE_CURSORS_AT_COMMIT
Copy of java.sql.ResultSet constant, for JDK 1.1 clients. |
static int |
CONCUR_READ_ONLY
Copy of java.sql.ResultSet constant, for JDK 1.1 clients. |
static int |
CONCUR_UPDATABLE
Copy of java.sql.ResultSet constant, for JDK 1.1 clients. |
static int |
FETCH_FORWARD
Copy of java.sql.ResultSet constant, for JDK 1.1 clients. |
static int |
FETCH_REVERSE
Copy of java.sql.ResultSet constant, for JDK 1.1 clients. |
static int |
FETCH_UNKNOWN
Copy of java.sql.ResultSet constant, for JDK 1.1 clients. |
static int |
HOLD_CURSORS_OVER_COMMIT
Copy of java.sql.ResultSet constant, for JDK 1.1 clients. |
org.hsqldb.Result |
rResult
The internal representation. |
static int |
TYPE_FORWARD_ONLY
Copy of java.sql.ResultSet constant, for JDK 1.1 clients. |
static int |
TYPE_SCROLL_INSENSITIVE
Copy of java.sql.ResultSet constant, for JDK 1.1 clients. |
static int |
TYPE_SCROLL_SENSITIVE
Copy of java.sql.ResultSet constant, for JDK 1.1 clients. |
Method Summary | |
boolean |
absolute(int row)
Moves the cursor to the given row number in this ResultSet object. |
void |
afterLast()
Moves the cursor to the end of this ResultSet object, just after the last row. |
void |
beforeFirst()
Moves the cursor to the front of this ResultSet object, just before the
first row. |
void |
cancelRowUpdates()
Cancels the updates made to the current row in this ResultSet object. |
void |
clearWarnings()
Clears all warnings reported on this ResultSet object. |
void |
close()
Releases this ResultSet object's database and
JDBC resources immediately instead of waiting for
this to happen when it is automatically closed. |
void |
deleteRow()
Deletes the current row from this ResultSet object
and from the underlying database. |
int |
findColumn(java.lang.String columnName)
Maps the given ResultSet column name to its
ResultSet column index. |
boolean |
first()
Moves the cursor to the first row in this ResultSet object. |
java.sql.Array |
getArray(int i)
Retrieves the value of the designated column in the current row of this ResultSet object as an Array object
in the Java programming language. |
java.sql.Array |
getArray(java.lang.String colName)
Retrieves the value of the designated column in the current row of this ResultSet object as an Array object
in the Java programming language. |
java.io.InputStream |
getAsciiStream(int columnIndex)
Retrieves the value of the designated column in the current row of this ResultSet object as
a stream of ASCII characters. |
java.io.InputStream |
getAsciiStream(java.lang.String columnName)
Retrieves the value of the designated column in the current row of this ResultSet object as a stream of
ASCII characters. |
java.math.BigDecimal |
getBigDecimal(int columnIndex)
Retrieves the value of the designated column in the current row of this ResultSet object as a
java.math.BigDecimal with full precision. |
java.math.BigDecimal |
getBigDecimal(int columnIndex,
int scale)
Deprecated. by java.sun.com as of JDK 1.2 |
java.math.BigDecimal |
getBigDecimal(java.lang.String columnName)
Retrieves the value of the designated column in the current row of this ResultSet object as a
java.math.BigDecimal with full precision. |
java.math.BigDecimal |
getBigDecimal(java.lang.String columnName,
int scale)
Deprecated. by java.sun.com as of JDK 1.2 |
java.io.InputStream |
getBinaryStream(int columnIndex)
Retrieves the value of the designated column in the current row of this ResultSet object as a binary stream of
uninterpreted bytes. |
java.io.InputStream |
getBinaryStream(java.lang.String columnName)
Retrieves the value of the designated column in the current row of this ResultSet object as a stream of uninterpreted
byte s. |
java.sql.Blob |
getBlob(int i)
Retrieves the value of the designated column in the current row of this ResultSet object as a Blob object
in the Java programming language. |
java.sql.Blob |
getBlob(java.lang.String colName)
Retrieves the value of the designated column in the current row of this ResultSet object as a Blob object
in the Java programming language. |
boolean |
getBoolean(int columnIndex)
Retrieves the value of the designated column in the current row of this ResultSet object as
a boolean in the Java programming language. |
boolean |
getBoolean(java.lang.String columnName)
Retrieves the value of the designated column in the current row of this ResultSet object as
a boolean in the Java programming language. |
byte |
getByte(int columnIndex)
Retrieves the value of the designated column in the current row of this ResultSet object as
a byte in the Java programming language. |
byte |
getByte(java.lang.String columnName)
Retrieves the value of the designated column in the current row of this ResultSet object as
a byte in the Java programming language. |
byte[] |
getBytes(int columnIndex)
Retrieves the value of the designated column in the current row of this ResultSet object as
a byte array in the Java programming language. |
byte[] |
getBytes(java.lang.String columnName)
Retrieves the value of the designated column in the current row of this ResultSet object as
a byte array in the Java programming language. |
java.io.Reader |
getCharacterStream(int columnIndex)
Retrieves the value of the designated column in the current row of this ResultSet object as a
java.io.Reader object. |
java.io.Reader |
getCharacterStream(java.lang.String columnName)
Retrieves the value of the designated column in the current row of this ResultSet object as a
java.io.Reader object. |
java.sql.Clob |
getClob(int i)
Retrieves the value of the designated column in the current row of this ResultSet object as a Clob object
in the Java programming language. |
java.sql.Clob |
getClob(java.lang.String colName)
Retrieves the value of the designated column in the current row of this ResultSet object as a Clob object
in the Java programming language. |
int |
getConcurrency()
Retrieves the concurrency mode of this ResultSet object. |
java.lang.String |
getCursorName()
Retrieves the name of the SQL cursor used by this ResultSet object. |
java.sql.Date |
getDate(int columnIndex)
Retrieves the value of the designated column in the current row of this ResultSet object as a
java.sql.Date object in the Java programming language. |
java.sql.Date |
getDate(int columnIndex,
java.util.Calendar cal)
Retrieves the value of the designated column in the current row of this ResultSet object as a
java.sql.Date object
in the Java programming language. |
java.sql.Date |
getDate(java.lang.String columnName)
Retrieves the value of the designated column in the current row of this ResultSet object as a
java.sql.Date object in the Java programming language. |
java.sql.Date |
getDate(java.lang.String columnName,
java.util.Calendar cal)
Retrieves the value of the designated column in the current row of this ResultSet object as a java.sql.Date
object in the Java programming language. |
double |
getDouble(int columnIndex)
Retrieves the value of the designated column in the current row of this ResultSet object as
a double in the Java programming language. |
double |
getDouble(java.lang.String columnName)
Retrieves the value of the designated column in the current row of this ResultSet object as
a double in the Java programming language. |
int |
getFetchDirection()
Retrieves the fetch direction for this ResultSet object. |
int |
getFetchSize()
Retrieves the fetch size for this ResultSet object. |
float |
getFloat(int columnIndex)
Retrieves the value of the designated column in the current row of this ResultSet object as
a float in the Java programming language. |
float |
getFloat(java.lang.String columnName)
Retrieves the value of the designated column in the current row of this ResultSet object as
a float in the Java programming language. |
int |
getInt(int columnIndex)
Retrieves the value of the designated column in the current row of this ResultSet object as
an int in the Java programming language. |
int |
getInt(java.lang.String columnName)
Retrieves the value of the designated column in the current row of this ResultSet object as
an int in the Java programming language. |
long |
getLong(int columnIndex)
Retrieves the value of the designated column in the current row of this ResultSet object as
a long in the Java programming language. |
long |
getLong(java.lang.String columnName)
Retrieves the value of the designated column in the current row of this ResultSet object as
a long in the Java programming language. |
java.sql.ResultSetMetaData |
getMetaData()
Retrieves the number, types and properties of this ResultSet object's columns. |
java.lang.Object |
getObject(int columnIndex)
Gets the value of the designated column in the current row of this ResultSet object as
an Object in the Java programming language. |
java.lang.Object |
getObject(int i,
java.util.Map map)
Retrieves the value of the designated column in the current row of this ResultSet object as an Object
in the Java programming language. |
java.lang.Object |
getObject(java.lang.String columnName)
Gets the value of the designated column in the current row of this ResultSet object as
an Object in the Java programming language. |
java.lang.Object |
getObject(java.lang.String colName,
java.util.Map map)
Retrieves the value of the designated column in the current row of this ResultSet object as an Object
in the Java programming language. |
java.sql.Ref |
getRef(int i)
Retrieves the value of the designated column in the current row of this ResultSet object as a Ref object
in the Java programming language. |
java.sql.Ref |
getRef(java.lang.String colName)
Retrieves the value of the designated column in the current row of this ResultSet object as a Ref object
in the Java programming language. |
int |
getRow()
Retrieves the current row number. |
short |
getShort(int columnIndex)
Retrieves the value of the designated column in the current row of this ResultSet object as
a short in the Java programming language. |
short |
getShort(java.lang.String columnName)
Retrieves the value of the designated column in the current row of this ResultSet object as
a short in the Java programming language. |
java.sql.Statement |
getStatement()
Retrieves the Statement object that produced this
ResultSet object. |
java.lang.String |
getString(int columnIndex)
Retrieves the value of the designated column in the current row of this ResultSet object as
a String in the Java programming language. |
java.lang.String |
getString(java.lang.String columnName)
Retrieves the value of the designated column in the current row of this ResultSet object as
a String in the Java programming language. |
java.sql.Time |
getTime(int columnIndex)
Retrieves the value of the designated column in the current row of this ResultSet object as a java.sql.Time
object in the Java programming language. |
java.sql.Time |
getTime(int columnIndex,
java.util.Calendar cal)
Retrieves the value of the designated column in the current row of this ResultSet object as a java.sql.Time
object in the Java programming language. |
java.sql.Time |
getTime(java.lang.String columnName)
Retrieves the value of the designated column in the current row of this ResultSet object as a java.sql.Time
object in the Java programming language. |
java.sql.Time |
getTime(java.lang.String columnName,
java.util.Calendar cal)
Retrieves the value of the designated column in the current row of this ResultSet object as
a java.sql.Time object
in the Java programming language. |
java.sql.Timestamp |
getTimestamp(int columnIndex)
Retrieves the value of the designated column in the current row of this ResultSet object as
a java.sql.Timestamp object in the Java programming
language. |
java.sql.Timestamp |
getTimestamp(int columnIndex,
java.util.Calendar cal)
Retrieves the value of the designated column in the current row of this ResultSet object as a
java.sql.Timestamp object in the Java programming
anguage. |
java.sql.Timestamp |
getTimestamp(java.lang.String columnName)
Retrieves the value of the designated column in the current row of this ResultSet object as
a java.sql.Timestamp object. |
java.sql.Timestamp |
getTimestamp(java.lang.String columnName,
java.util.Calendar cal)
Retrieves the value of the designated column in the current row of this ResultSet object as a
java.sql.Timestamp object in the Java programming
language. |
int |
getType()
Retrieves the type of this ResultSet object. |
java.io.InputStream |
getUnicodeStream(int columnIndex)
Deprecated. use getCharacterStream in place of
getUnicodeStream |
java.io.InputStream |
getUnicodeStream(java.lang.String columnName)
Deprecated. use getCharacterStream instead |
java.net.URL |
getURL(int columnIndex)
Retrieves the value of the designated column in the current row of this ResultSet object as a java.net.URL
object in the Java programming language. |
java.net.URL |
getURL(java.lang.String columnName)
Retrieves the value of the designated column in the current row of this ResultSet object as a java.net.URL
object in the Java programming language. |
java.sql.SQLWarning |
getWarnings()
Retrieves the first warning reported by calls on this ResultSet object. |
void |
insertRow()
Inserts the contents of the insert row into this ResultSet object and into the database. |
boolean |
isAfterLast()
Retrieves whether the cursor is after the last row in this ResultSet object. |
boolean |
isBeforeFirst()
Retrieves whether the cursor is before the first row in this ResultSet object. |
boolean |
isFirst()
Retrieves whether the cursor is on the first row of this ResultSet object. |
boolean |
isLast()
Retrieves whether the cursor is on the last row of this ResultSet object. |
boolean |
last()
Moves the cursor to the last row in this ResultSet object. |
void |
moveToCurrentRow()
Moves the cursor to the remembered cursor position, usually the current row. |
void |
moveToInsertRow()
Moves the cursor to the insert row. |
boolean |
next()
Moves the cursor down one row from its current position. |
boolean |
previous()
Moves the cursor to the previous row in this ResultSet object. |
void |
refreshRow()
Refreshes the current row with its most recent value in the database. |
boolean |
relative(int rows)
Moves the cursor a relative number of rows, either positive or negative. |
boolean |
rowDeleted()
Retrieves whether a row has been deleted. |
boolean |
rowInserted()
Retrieves whether the current row has had an insertion. |
boolean |
rowUpdated()
Retrieves whether the current row has been updated. |
void |
setFetchDirection(int direction)
Gives a hint as to the direction in which the rows in this ResultSet object will be processed. |
void |
setFetchSize(int rows)
Gives the JDBC driver a hint as to the number of rows that should be fetched from the database when more rows are needed for this ResultSet object. |
void |
updateArray(int columnIndex,
java.sql.Array x)
Updates the designated column with a java.sql.Array value. |
void |
updateArray(java.lang.String columnName,
java.sql.Array x)
Updates the designated column with a java.sql.Array value. |
void |
updateAsciiStream(int columnIndex,
java.io.InputStream x,
int length)
Updates the designated column with an ascii stream value. |
void |
updateAsciiStream(java.lang.String columnName,
java.io.InputStream x,
int length)
Updates the designated column with an ascii stream value. |
void |
updateBigDecimal(int columnIndex,
java.math.BigDecimal x)
Updates the designated column with a java.math.BigDecimal
value. |
void |
updateBigDecimal(java.lang.String columnName,
java.math.BigDecimal x)
Updates the designated column with a java.sql.BigDecimal
value. |
void |
updateBinaryStream(int columnIndex,
java.io.InputStream x,
int length)
Updates the designated column with a binary stream value. |
void |
updateBinaryStream(java.lang.String columnName,
java.io.InputStream x,
int length)
Updates the designated column with a binary stream value. |
void |
updateBlob(int columnIndex,
java.sql.Blob x)
Updates the designated column with a java.sql.Blob value. |
void |
updateBlob(java.lang.String columnName,
java.sql.Blob x)
Updates the designated column with a java.sql.Blob value. |
void |
updateBoolean(int columnIndex,
boolean x)
Updates the designated column with a boolean value. |
void |
updateBoolean(java.lang.String columnName,
boolean x)
Updates the designated column with a boolean value. |
void |
updateByte(int columnIndex,
byte x)
Updates the designated column with a byte value. |
void |
updateByte(java.lang.String columnName,
byte x)
Updates the designated column with a byte value. |
void |
updateBytes(int columnIndex,
byte[] x)
Updates the designated column with a byte array value. |
void |
updateBytes(java.lang.String columnName,
byte[] x)
Updates the designated column with a byte array value. |
void |
updateCharacterStream(int columnIndex,
java.io.Reader x,
int length)
Updates the designated column with a character stream value. |
void |
updateCharacterStream(java.lang.String columnName,
java.io.Reader reader,
int length)
Updates the designated column with a character stream value. |
void |
updateClob(int columnIndex,
java.sql.Clob x)
Updates the designated column with a java.sql.Clob value. |
void |
updateClob(java.lang.String columnName,
java.sql.Clob x)
Updates the designated column with a java.sql.Clob value. |
void |
updateDate(int columnIndex,
java.sql.Date x)
Updates the designated column with a java.sql.Date value. |
void |
updateDate(java.lang.String columnName,
java.sql.Date x)
Updates the designated column with a java.sql.Date value. |
void |
updateDouble(int columnIndex,
double x)
Updates the designated column with a double value. |
void |
updateDouble(java.lang.String columnName,
double x)
Updates the designated column with a double value. |
void |
updateFloat(int columnIndex,
float x)
Updates the designated column with a float value. |
void |
updateFloat(java.lang.String columnName,
float x)
Updates the designated column with a float value. |
void |
updateInt(int columnIndex,
int x)
Updates the designated column with an int value. |
void |
updateInt(java.lang.String columnName,
int x)
Updates the designated column with an int value. |
void |
updateLong(int columnIndex,
long x)
Updates the designated column with a long value. |
void |
updateLong(java.lang.String columnName,
long x)
Updates the designated column with a long value. |
void |
updateNull(int columnIndex)
Gives a nullable column a null value. |
void |
updateNull(java.lang.String columnName)
Updates the designated column with a null value. |
void |
updateObject(int columnIndex,
java.lang.Object x)
Updates the designated column with an Object value. |
void |
updateObject(int columnIndex,
java.lang.Object x,
int scale)
Updates the designated column with an Object value. |
void |
updateObject(java.lang.String columnName,
java.lang.Object x)
Updates the designated column with an Object value. |
void |
updateObject(java.lang.String columnName,
java.lang.Object x,
int scale)
Updates the designated column with an Object value. |
void |
updateRef(int columnIndex,
java.sql.Ref x)
Updates the designated column with a java.sql.Ref value. |
void |
updateRef(java.lang.String columnName,
java.sql.Ref x)
Updates the designated column with a java.sql.Ref value. |
void |
updateRow()
Updates the underlying database with the new contents of the current row of this ResultSet object. |
void |
updateShort(int columnIndex,
short x)
Updates the designated column with a short value. |
void |
updateShort(java.lang.String columnName,
short x)
Updates the designated column with a short value. |
void |
updateString(int columnIndex,
java.lang.String x)
Updates the designated column with a String value. |
void |
updateString(java.lang.String columnName,
java.lang.String x)
Updates the designated column with a String value. |
void |
updateTime(int columnIndex,
java.sql.Time x)
Updates the designated column with a java.sql.Time value. |
void |
updateTime(java.lang.String columnName,
java.sql.Time x)
Updates the designated column with a java.sql.Time value. |
void |
updateTimestamp(int columnIndex,
java.sql.Timestamp x)
Updates the designated column with a java.sql.Timestamp
value. |
void |
updateTimestamp(java.lang.String columnName,
java.sql.Timestamp x)
Updates the designated column with a java.sql.Timestamp
value. |
boolean |
wasNull()
Reports whether the last column read had a value of SQL NULL . |
Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
public org.hsqldb.Result rResult
public static final int FETCH_FORWARD
public static final int FETCH_REVERSE
public static final int FETCH_UNKNOWN
public static final int TYPE_FORWARD_ONLY
public static final int TYPE_SCROLL_INSENSITIVE
public static final int TYPE_SCROLL_SENSITIVE
public static final int CONCUR_READ_ONLY
public static final int CONCUR_UPDATABLE
public static final int HOLD_CURSORS_OVER_COMMIT
public static final int CLOSE_CURSORS_AT_COMMIT
Method Detail |
public boolean next() throws java.sql.SQLException
ResultSet
cursor is initially positioned
before the first row; the first call to the method
next
makes the first row the current row; the
second call makes the second row the current row, and so on.
If an input stream is open for the current row, a call
to the method next
will
implicitly close it. A ResultSet
object's
warning chain is cleared when a new row is read.
next
in interface java.sql.ResultSet
true
if the new current row is valid;
false
if there are no more rows
java.sql.SQLException
- if a database access error occurspublic void close() throws java.sql.SQLException
ResultSet
object's database and
JDBC resources immediately instead of waiting for
this to happen when it is automatically closed.
Note: A ResultSet
object
is automatically closed by the
Statement
object that generated it when
that Statement
object is closed,
re-executed, or is used to retrieve the next result from a
sequence of multiple results. A ResultSet
object
is also automatically closed when it is garbage collected.
close
in interface java.sql.ResultSet
java.sql.SQLException
- if a database access error occurspublic boolean wasNull() throws java.sql.SQLException
NULL
.
Note that you must first call one of the getter methods
on a column to try to read its value and then call
the method wasNull
to see if the value read was
SQL NULL
.
wasNull
in interface java.sql.ResultSet
true
if the last column value read was SQL
NULL
and false
otherwise
java.sql.SQLException
- if a database access error occurspublic java.lang.String getString(int columnIndex) throws java.sql.SQLException
ResultSet
object as
a String
in the Java programming language.
getString
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...
NULL
, the
value returned is null
java.sql.SQLException
- if a database access error occurspublic boolean getBoolean(int columnIndex) throws java.sql.SQLException
ResultSet
object as
a boolean
in the Java programming language.
getBoolean
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...
NULL
, the
value returned is false
java.sql.SQLException
- if a database access error occurspublic byte getByte(int columnIndex) throws java.sql.SQLException
ResultSet
object as
a byte
in the Java programming language.
getByte
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...
NULL
, the
value returned is 0
java.sql.SQLException
- if a database access error occurspublic short getShort(int columnIndex) throws java.sql.SQLException
ResultSet
object as
a short
in the Java programming language.
getShort
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...
NULL
, the
value returned is 0
java.sql.SQLException
- if a database access error occurspublic int getInt(int columnIndex) throws java.sql.SQLException
ResultSet
object as
an int
in the Java programming language.
getInt
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...
NULL
, the
value returned is 0
java.sql.SQLException
- if a database access error occurspublic long getLong(int columnIndex) throws java.sql.SQLException
ResultSet
object as
a long
in the Java programming language.
getLong
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...
NULL
, the
value returned is 0
java.sql.SQLException
- if a database access error occurspublic float getFloat(int columnIndex) throws java.sql.SQLException
ResultSet
object as
a float
in the Java programming language.
getFloat
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...
NULL
, the
value returned is 0
java.sql.SQLException
- if a database access error occurspublic double getDouble(int columnIndex) throws java.sql.SQLException
ResultSet
object as
a double
in the Java programming language.
getDouble
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...
NULL
, the
value returned is 0
java.sql.SQLException
- if a database access error occurspublic java.math.BigDecimal getBigDecimal(int columnIndex, int scale) throws java.sql.SQLException
ResultSet
object as
a java.sql.BigDecimal
in the Java programming language.
Beginning with 1.7.0, HSQLDB converts the result and sets the scale with BigDecimal.ROUND_HALF_DOWN.
getBigDecimal
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...scale
- the number of digits to the right of the decimal point
NULL
, the
value returned is null
java.sql.SQLException
- if a database access error occurspublic byte[] getBytes(int columnIndex) throws java.sql.SQLException
ResultSet
object as
a byte
array in the Java programming language.
The bytes represent the raw values returned by the driver.
HSQLDB returns correct values for columns of type BINARY
,
CHAR
and their variations. For other types, it returns
the byte[]
for the String
representation
of the value.
getBytes
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...
NULL
, the
value returned is null
java.sql.SQLException
- if a database access error occurspublic java.sql.Date getDate(int columnIndex) throws java.sql.SQLException
ResultSet
object as a
java.sql.Date
object in the Java programming language.
getDate
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...
NULL
, the
value returned is null
java.sql.SQLException
- if a database access error occurspublic java.sql.Time getTime(int columnIndex) throws java.sql.SQLException
ResultSet
object as a java.sql.Time
object in the Java programming language.
getTime
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...
NULL
, the
value returned is null
java.sql.SQLException
- if a database access error occurspublic java.sql.Timestamp getTimestamp(int columnIndex) throws java.sql.SQLException
ResultSet
object as
a java.sql.Timestamp
object in the Java programming
language.
getTimestamp
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...
NULL
, the
value returned is null
java.sql.SQLException
- if a database access error occurspublic java.io.InputStream getAsciiStream(int columnIndex) throws java.sql.SQLException
ResultSet
object as
a stream of ASCII characters. The value can then be read in chunks
from the stream. This method is particularly
suitable for retrieving large Note: All the data in the returned stream must be
read prior to getting the value of any other column. The next
call to a getter method implicitly closes the stream. Also, a
stream may return 0
when the method
InputStream.available
is called whether there is data available or not.
The limitation noted above does not apply to HSQLDB.
In 1.6.1 and previous, getAsciiStream was identical to
getUnicodeStream and both simply returned a byte stream
constructed from the raw getBytes
representation.
Starting with 1.7.0, this has been updated to comply with the
java.sql specification.
When the column is of type CHAR and its variations, it requires no
conversion since it is represented internally already as a
Java String object. When the column is not of type CHAR and its
variations, the returned stream is based on a conversion to the
Java String
representation of the value. In either case,
the obtained stream is always equivalent to a stream of the low order
bytes from the value's String representation.
HSQLDB SQL CHAR
and its variations are all Unicode strings
internally, so the recommended alternatives to this method are
getString
,
getUnicodeStream
(deprecated)
and new to 1.7.0: getCharacterStream
(now prefered over the deprecated getUnicodeStream alternative).
getAsciiStream
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...
NULL
, the
value returned is null
java.sql.SQLException
- if a database access error occurspublic java.io.InputStream getUnicodeStream(int columnIndex) throws java.sql.SQLException
getCharacterStream
in place of
getUnicodeStream
ResultSet
object as
as a stream of two-byte Unicode characters. The first byte is
the high byte; the second byte is the low byte.
The value can then be read in chunks from the
stream. This method is particularly
suitable for retrieving large LONGVARCHAR
values. The
JDBC driver will do any necessary conversion from the database
format into Unicode.
Note: All the data in the returned stream must be
read prior to getting the value of any other column. The next
call to a getter method implicitly closes the stream.
Also, a stream may return 0
when the method
InputStream.available
is called, whether there is data available or not.
The limitation noted above does not apply to HSQLDB.
Up to and including 1.6.1, getUnicodeStream (and getAsciiStream)
both simply returned a byte stream constructed from the
raw getBytes
representation.
Starting with 1.7.0, this has been corrected to comply with the
java.sql specification.
When the column is of type CHAR and its variations, it requires no
conversion since it is represented internally already as
Java Strings. When the column is not of type CHAR and its variations,
the returned stream is based on a conversion to the
Java String
representation of the value. In either case,
the obtained stream is always equivalent to a stream of
bytes from the value's String representation, with high-byte first.
getUnicodeStream
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...
NULL
, the value returned is
null
java.sql.SQLException
- if a database access error occurspublic java.io.InputStream getBinaryStream(int columnIndex) throws java.sql.SQLException
ResultSet
object as a binary stream of
uninterpreted bytes. The value can then be read in chunks from the
stream. This method is particularly
suitable for retrieving large LONGVARBINARY
values.
Note: All the data in the returned stream must be
read prior to getting the value of any other column. The next
call to a getter method implicitly closes the stream. Also, a
stream may return 0
when the method
InputStream.available
is called whether there is data available or not.
getBinaryStream
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...
NULL
, the value returned is
null
java.sql.SQLException
- if a database access error occurspublic java.lang.String getString(java.lang.String columnName) throws java.sql.SQLException
ResultSet
object as
a String
in the Java programming language.
getString
in interface java.sql.ResultSet
columnName
- the SQL name of the column
NULL
, the
value returned is null
java.sql.SQLException
- if a database access error occurspublic boolean getBoolean(java.lang.String columnName) throws java.sql.SQLException
ResultSet
object as
a boolean
in the Java programming language.
getBoolean
in interface java.sql.ResultSet
columnName
- the SQL name of the column
NULL
, the
value returned is false
java.sql.SQLException
- if a database access error occurspublic byte getByte(java.lang.String columnName) throws java.sql.SQLException
ResultSet
object as
a byte
in the Java programming language.
getByte
in interface java.sql.ResultSet
columnName
- the SQL name of the column
NULL
, the
value returned is 0
java.sql.SQLException
- if a database access error occurspublic short getShort(java.lang.String columnName) throws java.sql.SQLException
ResultSet
object as
a short
in the Java programming language.
getShort
in interface java.sql.ResultSet
columnName
- the SQL name of the column
NULL
, the
value returned is 0
java.sql.SQLException
- if a database access error occurspublic int getInt(java.lang.String columnName) throws java.sql.SQLException
ResultSet
object as
an int
in the Java programming language.
getInt
in interface java.sql.ResultSet
columnName
- the SQL name of the column
NULL
, the
value returned is 0
java.sql.SQLException
- if a database access error occurspublic long getLong(java.lang.String columnName) throws java.sql.SQLException
ResultSet
object as
a long
in the Java programming language.
getLong
in interface java.sql.ResultSet
columnName
- the SQL name of the column
NULL
, the
value returned is 0
java.sql.SQLException
- if a database access error occurspublic float getFloat(java.lang.String columnName) throws java.sql.SQLException
ResultSet
object as
a float
in the Java programming language.
getFloat
in interface java.sql.ResultSet
columnName
- the SQL name of the column
NULL
, the
value returned is 0
java.sql.SQLException
- if a database access error occurspublic double getDouble(java.lang.String columnName) throws java.sql.SQLException
ResultSet
object as
a double
in the Java programming language.
getDouble
in interface java.sql.ResultSet
columnName
- the SQL name of the column
NULL
, the
value returned is 0
java.sql.SQLException
- if a database access error occurspublic java.math.BigDecimal getBigDecimal(java.lang.String columnName, int scale) throws java.sql.SQLException
ResultSet
object as a
java.math.BigDecimal
in the Java programming language.
Beginning with 1.7.0, HSQLDB converts the result and sets the scale with BigDecimal.ROUND_HALF_DOWN.
getBigDecimal
in interface java.sql.ResultSet
columnName
- the SQL name of the columnscale
- the number of digits to the right of the decimal point
NULL
, the
value returned is null
java.sql.SQLException
- if a database access error occurspublic byte[] getBytes(java.lang.String columnName) throws java.sql.SQLException
ResultSet
object as
a byte
array in the Java programming language.
The bytes represent the raw values returned by the driver.
getBytes
in interface java.sql.ResultSet
columnName
- the SQL name of the column
NULL
, the
value returned is null
java.sql.SQLException
- if a database access error occurspublic java.sql.Date getDate(java.lang.String columnName) throws java.sql.SQLException
ResultSet
object as a
java.sql.Date
object in the Java programming language.
getDate
in interface java.sql.ResultSet
columnName
- the SQL name of the column
NULL
, the
value returned is null
java.sql.SQLException
- if a database access error occurspublic java.sql.Time getTime(java.lang.String columnName) throws java.sql.SQLException
ResultSet
object as a java.sql.Time
object in the Java programming language.
getTime
in interface java.sql.ResultSet
columnName
- the SQL name of the column
NULL
,
the value returned is null
java.sql.SQLException
- if a database access error occurspublic java.sql.Timestamp getTimestamp(java.lang.String columnName) throws java.sql.SQLException
ResultSet
object as
a java.sql.Timestamp
object.
getTimestamp
in interface java.sql.ResultSet
columnName
- the SQL name of the column
NULL
, the
value returned is null
java.sql.SQLException
- if a database access error occurspublic java.io.InputStream getAsciiStream(java.lang.String columnName) throws java.sql.SQLException
ResultSet
object as a stream of
ASCII characters. The value can then be read in chunks from the
stream. This method is particularly
suitable for retrieving large LONGVARCHAR
values.
The JDBC driver will
do any necessary conversion from the database format into ASCII.
Note: All the data in the returned stream must be
read prior to getting the value of any other column. The next
call to a getter method implicitly closes the stream. Also, a
stream may return 0
when the method available
is called whether there is data available or not.
getAsciiStream
in interface java.sql.ResultSet
columnName
- the SQL name of the column
NULL
,
the value returned is null
.
java.sql.SQLException
- if a database access error occursgetAsciiStream(int)
public java.io.InputStream getUnicodeStream(java.lang.String columnName) throws java.sql.SQLException
getCharacterStream
instead
ResultSet
object as a stream of two-byte
Unicode characters. The first byte is the high byte; the second
byte is the low byte.
The value can then be read in chunks from the
stream. This method is particularly
suitable for retrieving large LONGVARCHAR
values.
The JDBC technology-enabled driver will
do any necessary conversion from the database format into Unicode.
Note: All the data in the returned stream must be
read prior to getting the value of any other column. The next
call to a getter method implicitly closes the stream.
Also, a stream may return 0
when the method
InputStream.available
is called, whether there
is data available or not.
getUnicodeStream
in interface java.sql.ResultSet
columnName
- the SQL name of the column
NULL
, the value returned
is null
.
java.sql.SQLException
- if a database access error occursgetUnicodeStream(int)
public java.io.InputStream getBinaryStream(java.lang.String columnName) throws java.sql.SQLException
ResultSet
object as a stream of uninterpreted
byte
s.
The value can then be read in chunks from the
stream. This method is particularly
suitable for retrieving large LONGVARBINARY
values.
Note: All the data in the returned stream must be
read prior to getting the value of any other column. The next
call to a getter method implicitly closes the stream. Also, a
stream may return 0
when the method available
is called whether there is data available or not.
getBinaryStream
in interface java.sql.ResultSet
columnName
- the SQL name of the column
NULL
, the result is null
java.sql.SQLException
- if a database access error occurspublic java.sql.SQLWarning getWarnings() throws java.sql.SQLException
ResultSet
object.
Subsequent warnings on this ResultSet
object
will be chained to the SQLWarning
object that
this method returns.
The warning chain is automatically cleared each time a new
row is read. This method may not be called on a ResultSet
object that has been closed; doing so will cause an
SQLException
to be thrown.
Note: This warning chain only covers warnings caused
by ResultSet
methods. Any warning caused by
Statement
methods
(such as reading OUT parameters) will be chained on the
Statement
object.
Up to and including 1.7.1, HSQLDB does not produce
SQLWarning
objects. This method always returns
null
.
getWarnings
in interface java.sql.ResultSet
SQLWarning
object reported or
null
if there are none Up to and including 1.7.1, HSQLDB always returns null.
java.sql.SQLException
- if a database access error occurs or this
method is called on a closed result setpublic void clearWarnings() throws java.sql.SQLException
ResultSet
object.
After this method is called, the method getWarnings
returns null
until a new warning is
reported for this ResultSet
object.
Including 1.7.1, HSQLDB does not produce SQLWarning
objects on any ResultSet object warning chain; calls to this method
are ignored.
clearWarnings
in interface java.sql.ResultSet
java.sql.SQLException
- if a database access error occurspublic java.lang.String getCursorName() throws java.sql.SQLException
ResultSet
object.
In SQL, a result table is retrieved through a cursor that is
named. The current row of a result set can be updated or deleted
using a positioned update/delete statement that references the
cursor name. To insure that the cursor has the proper isolation
level to support update, the cursor's SELECT
statement
should be of the form SELECT FOR UPDATE
. If
FOR UPDATE
is omitted, the positioned updates may fail.
The JDBC API supports this SQL feature by providing the name of the
SQL cursor used by a ResultSet
object.
The current row of a ResultSet
object
is also the current row of this SQL cursor.
Note: If positioned update is not supported, a
SQLException
is thrown.
Including 1.7.2, HSQLDB does not support this feature.
Calling this method always throws an SQLException
,
stating that the operation is not supported.
getCursorName
in interface java.sql.ResultSet
ResultSet
object's cursor
java.sql.SQLException
- if a database access error occurspublic java.sql.ResultSetMetaData getMetaData() throws java.sql.SQLException
ResultSet
object's columns.
Example:
The following code fragment creates a ResultSet
object rs,
creates a ResultSetMetaData
object rsmd, and uses rsmd
to find out how many columns rs has and whether the first column
in rs can be used in a WHERE
clause.
ResultSet rs = stmt.executeQuery("SELECT a, b, c FROM TABLE2"); ResultSetMetaData rsmd = rs.getMetaData();
int numberOfColumns = rsmd.getColumnCount();
boolean b = rsmd.isSearchable(1);
Including 1.7.1, HSQLDB did not generate accurate
ResultSetMetaData
. Below were the the most important
methods to consider:
false
false
columnNullableUnknown
getMetaData
in interface java.sql.ResultSet
ResultSet
object's columns
java.sql.SQLException
- if a database access error occursjdbcResultSetMetaData
public java.lang.Object getObject(int columnIndex) throws java.sql.SQLException
ResultSet
object as
an Object
in the Java programming language.
This method will return the value of the given column as a
Java object. The type of the Java object will be the default
Java object type corresponding to the column's SQL type,
following the mapping for built-in types specified in the JDBC
specification. If the value is an SQL NULL
,
the driver returns a Java null
.
This method may also be used to read datatabase-specific
abstract data types.
In the JDBC 2.0 API, the behavior of method
getObject
is extended to materialize
data of SQL user-defined types. When a column contains
a structured or distinct value, the behavior of this method is as
if it were a call to: getObject(columnIndex,
this.getStatement().getConnection().getTypeMap())
.
getObject
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...
java.lang.Object
holding the column value
java.sql.SQLException
- if a database access error occurspublic java.lang.Object getObject(java.lang.String columnName) throws java.sql.SQLException
ResultSet
object as
an Object
in the Java programming language.
This method will return the value of the given column as a
Java object. The type of the Java object will be the default
Java object type corresponding to the column's SQL type,
following the mapping for built-in types specified in the JDBC
specification. If the value is an SQL NULL
,
the driver returns a Java null
.
This method may also be used to read datatabase-specific abstract data types.
In the JDBC 2.0 API, the behavior of the method
getObject
is extended to materialize
data of SQL user-defined types. When a column contains
a structured or distinct value, the behavior of this method is as
if it were a call to: getObject(columnIndex,
this.getStatement().getConnection().getTypeMap())
.
getObject
in interface java.sql.ResultSet
columnName
- the SQL name of the column
java.lang.Object
holding the column value
java.sql.SQLException
- if a database access error occurspublic int findColumn(java.lang.String columnName) throws java.sql.SQLException
ResultSet
column name to its
ResultSet
column index.
findColumn
in interface java.sql.ResultSet
columnName
- the name of the column
java.sql.SQLException
- if the ResultSet
object does not
contain columnName
or a database access error occurspublic java.io.Reader getCharacterStream(int columnIndex) throws java.sql.SQLException
ResultSet
object as a
java.io.Reader
object.
Starting with 1.7.0. HSQLDB supports this.
getCharacterStream
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...
java.io.Reader
object that contains the column
value; if the value is SQL NULL
, the value returned
is null
in the Java programming language.
java.sql.SQLException
- if a database access error occurspublic java.io.Reader getCharacterStream(java.lang.String columnName) throws java.sql.SQLException
ResultSet
object as a
java.io.Reader
object.
Starting with 1.7.0, HSQLDB supports this.
getCharacterStream
in interface java.sql.ResultSet
columnName
- the name of the column
java.io.Reader
object that contains the column
value; if the value is SQL NULL
, the value returned is
null
in the Java programming language
java.sql.SQLException
- if a database access error occurspublic java.math.BigDecimal getBigDecimal(int columnIndex) throws java.sql.SQLException
ResultSet
object as a
java.math.BigDecimal
with full precision.
getBigDecimal
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...
NULL
, the value returned is
null
in the Java programming language.
java.sql.SQLException
- if a database access error occurspublic java.math.BigDecimal getBigDecimal(java.lang.String columnName) throws java.sql.SQLException
ResultSet
object as a
java.math.BigDecimal
with full precision.
getBigDecimal
in interface java.sql.ResultSet
columnName
- the column name
NULL
, the value returned is
null
in the Java programming language.
java.sql.SQLException
- if a database access error occurspublic boolean isBeforeFirst() throws java.sql.SQLException
ResultSet
object.
isBeforeFirst
in interface java.sql.ResultSet
true
if the cursor is before the first row;
false
if the cursor is at any other position or the
result set contains no rows
java.sql.SQLException
- if a database access error occurspublic boolean isAfterLast() throws java.sql.SQLException
ResultSet
object.
isAfterLast
in interface java.sql.ResultSet
true
if the cursor is after the last row;
false
if the cursor is at any other position or the
result set contains no rows
java.sql.SQLException
- if a database access error occurspublic boolean isFirst() throws java.sql.SQLException
ResultSet
object.
isFirst
in interface java.sql.ResultSet
true
if the cursor is on the first row;
false
otherwise
java.sql.SQLException
- if a database access error occurspublic boolean isLast() throws java.sql.SQLException
ResultSet
object.
Note: Calling the method isLast
may be expensive
because the JDBC driver
might need to fetch ahead one row in order to determine
whether the current row is the last row in the result set.
Including 1.7.2, this method is not terribly expensive; the entire result is fetched internally before this object is returned to a caller.
isLast
in interface java.sql.ResultSet
true
if the cursor is on the last row;
false
otherwise
java.sql.SQLException
- if a database access error occurspublic void beforeFirst() throws java.sql.SQLException
ResultSet
object, just before the
first row. This method has no effect if the result set contains
no rows.
beforeFirst
in interface java.sql.ResultSet
java.sql.SQLException
- if a database access error
occurs or the result set type is TYPE_FORWARD_ONLY
public void afterLast() throws java.sql.SQLException
ResultSet
object, just after the last row. This
method has no effect if the result set contains no rows.
afterLast
in interface java.sql.ResultSet
java.sql.SQLException
- if a database access error
occurs or the result set type is TYPE_FORWARD_ONLY
public boolean first() throws java.sql.SQLException
ResultSet
object.
first
in interface java.sql.ResultSet
true
if the cursor is on a valid row;
false
if there are no rows in the result set
java.sql.SQLException
- if a database access error
occurs or the result set type is TYPE_FORWARD_ONLY
public boolean last() throws java.sql.SQLException
ResultSet
object.
last
in interface java.sql.ResultSet
true
if the cursor is on a valid row;
false
if there are no rows in the result set
java.sql.SQLException
- if a database access error
occurs or the result set type is TYPE_FORWARD_ONLY
public int getRow() throws java.sql.SQLException
getRow
in interface java.sql.ResultSet
0
if there is no current
row
java.sql.SQLException
- if a database access error occurspublic boolean absolute(int row) throws java.sql.SQLException
ResultSet
object.
If the row number is positive, the cursor moves to the given row number with respect to the beginning of the result set. The first row is row 1, the second is row 2, and so on.
If the given row number is negative, the cursor moves to
an absolute row position with respect to
the end of the result set. For example, calling the method
absolute(-1)
positions the
cursor on the last row; calling the method absolute(-2)
moves the cursor to the next-to-last row, and so on.
An attempt to position the cursor beyond the first/last row in the result set leaves the cursor before the first row or after the last row.
Note: Calling absolute(1)
is the same
as calling first()
. Calling absolute(-1)
is the same as calling last()
.
absolute
in interface java.sql.ResultSet
row
- the number of the row to which the cursor should move.
A positive number indicates the row number counting from the
beginning of the result set; a negative number indicates the
row number counting from the end of the result set
true
if the cursor is on the result set;
false
otherwise
java.sql.SQLException
- if a database access error
occurs, or the result set type is TYPE_FORWARD_ONLY
public boolean relative(int rows) throws java.sql.SQLException
relative(0)
is valid, but does
not change the cursor position.
Note: Calling the method relative(1)
is identical to calling the method next()
and
calling the method relative(-1)
is identical
to calling the method previous()
.
relative
in interface java.sql.ResultSet
rows
- an int
specifying the number of rows to
move from the current row; a positive number moves the cursor
forward; a negative number moves the cursor backward
true
if the cursor is on a row;
false
otherwise
java.sql.SQLException
- if a database access error occurs,
there is no current row, or the result set type is
TYPE_FORWARD_ONLY
public boolean previous() throws java.sql.SQLException
ResultSet
object.
previous
in interface java.sql.ResultSet
true
if the cursor is on a valid row;
false
if it is off the result set
java.sql.SQLException
- if a database access error
occurs or the result set type is TYPE_FORWARD_ONLY
public void setFetchDirection(int direction) throws java.sql.SQLException
ResultSet
object will be processed.
The initial value is determined by the
Statement
object
that produced this ResultSet
object.
The fetch direction may be changed at any time.
Including 1.7.2, HSQLDB builds and returns result sets as a whole; this method does nothing. However, as mandated by the JDBC standard, an SQLException is thrown if the result set type is TYPE_FORWARD_ONLY and a fetch direction other than FETCH_FORWARD is requested.
setFetchDirection
in interface java.sql.ResultSet
direction
- an int
specifying the suggested
fetch direction; one of ResultSet.FETCH_FORWARD
,
ResultSet.FETCH_REVERSE
, or
ResultSet.FETCH_UNKNOWN
java.sql.SQLException
- if a database access error occurs or
the result set type is TYPE_FORWARD_ONLY
and the
fetch direction is not FETCH_FORWARD
jdbcStatement.setFetchDirection(int)
,
getFetchDirection()
public int getFetchDirection() throws java.sql.SQLException
ResultSet
object.
Including 1.7.2, HSQLDB builds and returns result sets as a whole;
this method always returns FETCH_FORWARD
, but the value
has no real meaning.
getFetchDirection
in interface java.sql.ResultSet
ResultSet
object
java.sql.SQLException
- if a database access error occurssetFetchDirection(int)
public void setFetchSize(int rows) throws java.sql.SQLException
ResultSet
object.
If the fetch size specified is zero, the JDBC driver
ignores the value and is free to make its own best guess as to what
the fetch size should be. The default value is set by the
Statement
object
that created the result set. The fetch size may be changed at any
time.
Including 1.7.2, HSQLDB builds and returns result sets as a whole; this method does nothing.
setFetchSize
in interface java.sql.ResultSet
rows
- the number of rows to fetch
java.sql.SQLException
- if a database access error occurs or the
condition 0 <= rows <= this.getMaxRows()
is not satisfiedgetFetchSize()
,
jdbcStatement.setFetchSize(int)
,
jdbcStatement.getFetchSize()
public int getFetchSize() throws java.sql.SQLException
ResultSet
object.
Including 1.7.2, HSQLDB builds and returns result sets as a whole; the value returned (always 1) has no significance.
getFetchSize
in interface java.sql.ResultSet
ResultSet
object
java.sql.SQLException
- if a database access error occurssetFetchSize(int)
,
jdbcStatement.getFetchSize()
,
jdbcStatement.setFetchSize(int)
public int getType() throws java.sql.SQLException
ResultSet
object.
The type is determined by the Statement
object
that created the result set.
Including 1.7.2, HSQLDB does not support and thus
never returns ResultSet.TYPE_SCROLL_SENSITIVE
.
getType
in interface java.sql.ResultSet
ResultSet.TYPE_FORWARD_ONLY
,
ResultSet.TYPE_SCROLL_INSENSITIVE
,
or ResultSet.TYPE_SCROLL_SENSITIVE
(not supported)
java.sql.SQLException
- if a database access error occurspublic int getConcurrency() throws java.sql.SQLException
ResultSet
object.
The concurrency used is determined by the
Statement
object that created the result set.
Including 1.7.2, HSQLDB supports only CONCUR_READ_ONLY
;
this method always returns CONCUR_READ_ONLY
.
getConcurrency
in interface java.sql.ResultSet
ResultSet.CONCUR_READ_ONLY
or ResultSet.CONCUR_UPDATABLE
java.sql.SQLException
- if a database access error occurspublic boolean rowUpdated() throws java.sql.SQLException
Including 1.7.2, HSQLDB does not support updateable results.
This method always returns false.
rowUpdated
in interface java.sql.ResultSet
true
if both (1) the row has been visibly updated
by the owner or another and (2) updates are detected
java.sql.SQLException
- if a database access error occursDatabaseMetaData#updatesAreDetected
public boolean rowInserted() throws java.sql.SQLException
ResultSet
object can detect visible inserts.
Including 1.7.2, HSQLDB does not support updateable results.
This method always returns false.
rowInserted
in interface java.sql.ResultSet
true
if a row has had an insertion
and insertions are detected; false
otherwise
java.sql.SQLException
- if a database access error occursDatabaseMetaData#insertsAreDetected
public boolean rowDeleted() throws java.sql.SQLException
ResultSet
object can detect deletions.
Including 1.7.2, HSQLDB does not support updateable results.
This method always returns false.
rowDeleted
in interface java.sql.ResultSet
true
if a row was deleted and deletions are
detected; false
otherwise
java.sql.SQLException
- if a database access error occursDatabaseMetaData#deletesAreDetected
public void updateNull(int columnIndex) throws java.sql.SQLException
updateRow
or insertRow
methods are called to update the database.
Including 1.7.1, HSQLDB does not support updateable results.
This method always throws an SQLException stating that the operation is not supported.
updateNull
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...
java.sql.SQLException
- if a database access error occurspublic void updateBoolean(int columnIndex, boolean x) throws java.sql.SQLException
boolean
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable results.
This method always throws an SQLException, stating that the operation is not supported.
updateBoolean
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateByte(int columnIndex, byte x) throws java.sql.SQLException
byte
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable results.
This method always throws an SQLException, stating that the operation is not supported.
updateByte
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateShort(int columnIndex, short x) throws java.sql.SQLException
short
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable results.
This method always throws an SQLException stating that the operation is not supported.
updateShort
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateInt(int columnIndex, int x) throws java.sql.SQLException
int
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable results.
This method always throws an SQLException stating that the operation is not supported.
updateInt
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateLong(int columnIndex, long x) throws java.sql.SQLException
long
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable results.
This method always throws an SQLException stating that the operation is not supported.
updateLong
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateFloat(int columnIndex, float x) throws java.sql.SQLException
float
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable results.
This method always throws an SQLException, stating that the operation is not supported.
updateFloat
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateDouble(int columnIndex, double x) throws java.sql.SQLException
double
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable results.
This method always throws an SQLException, stating that the operation is not supported.
updateDouble
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateBigDecimal(int columnIndex, java.math.BigDecimal x) throws java.sql.SQLException
java.math.BigDecimal
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable results.
This method always throws an SQLException stating that the operation is not supported.
updateBigDecimal
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateString(int columnIndex, java.lang.String x) throws java.sql.SQLException
String
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable results.
This method always throws an SQLException, stating that the operation is not supported.
updateString
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateBytes(int columnIndex, byte[] x) throws java.sql.SQLException
byte
array value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException, stating that the operation is not supported.
updateBytes
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateDate(int columnIndex, java.sql.Date x) throws java.sql.SQLException
java.sql.Date
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException, stating that the operation is not supported.
updateDate
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateTime(int columnIndex, java.sql.Time x) throws java.sql.SQLException
java.sql.Time
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateTime
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateTimestamp(int columnIndex, java.sql.Timestamp x) throws java.sql.SQLException
java.sql.Timestamp
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateTimestamp
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateAsciiStream(int columnIndex, java.io.InputStream x, int length) throws java.sql.SQLException
updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateAsciiStream
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column valuelength
- the length of the stream
java.sql.SQLException
- if a database access error occurspublic void updateBinaryStream(int columnIndex, java.io.InputStream x, int length) throws java.sql.SQLException
updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateBinaryStream
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column valuelength
- the length of the stream
java.sql.SQLException
- if a database access error occurspublic void updateCharacterStream(int columnIndex, java.io.Reader x, int length) throws java.sql.SQLException
updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateCharacterStream
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column valuelength
- the length of the stream
java.sql.SQLException
- if a database access error occurspublic void updateObject(int columnIndex, java.lang.Object x, int scale) throws java.sql.SQLException
Object
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateObject
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column valuescale
- for java.sql.Types.DECIMA
or java.sql.Types.NUMERIC
types,
this is the number of digits after the decimal point. For all other
types this value will be ignored.
java.sql.SQLException
- if a database access error occurspublic void updateObject(int columnIndex, java.lang.Object x) throws java.sql.SQLException
Object
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateObject
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateNull(java.lang.String columnName) throws java.sql.SQLException
null
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateNull
in interface java.sql.ResultSet
columnName
- the name of the column
java.sql.SQLException
- if a database access error occurspublic void updateBoolean(java.lang.String columnName, boolean x) throws java.sql.SQLException
boolean
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateBoolean
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateByte(java.lang.String columnName, byte x) throws java.sql.SQLException
byte
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateByte
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateShort(java.lang.String columnName, short x) throws java.sql.SQLException
short
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateShort
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateInt(java.lang.String columnName, int x) throws java.sql.SQLException
int
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateInt
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateLong(java.lang.String columnName, long x) throws java.sql.SQLException
long
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateLong
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateFloat(java.lang.String columnName, float x) throws java.sql.SQLException
float
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateFloat
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateDouble(java.lang.String columnName, double x) throws java.sql.SQLException
double
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateDouble
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateBigDecimal(java.lang.String columnName, java.math.BigDecimal x) throws java.sql.SQLException
java.sql.BigDecimal
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateBigDecimal
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateString(java.lang.String columnName, java.lang.String x) throws java.sql.SQLException
String
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateString
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateBytes(java.lang.String columnName, byte[] x) throws java.sql.SQLException
updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateBytes
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateDate(java.lang.String columnName, java.sql.Date x) throws java.sql.SQLException
java.sql.Date
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateDate
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateTime(java.lang.String columnName, java.sql.Time x) throws java.sql.SQLException
java.sql.Time
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateTime
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateTimestamp(java.lang.String columnName, java.sql.Timestamp x) throws java.sql.SQLException
java.sql.Timestamp
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateTimestamp
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateAsciiStream(java.lang.String columnName, java.io.InputStream x, int length) throws java.sql.SQLException
updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateAsciiStream
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column valuelength
- the length of the stream
java.sql.SQLException
- if a database access error occurspublic void updateBinaryStream(java.lang.String columnName, java.io.InputStream x, int length) throws java.sql.SQLException
updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateBinaryStream
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column valuelength
- the length of the stream
java.sql.SQLException
- if a database access error occurspublic void updateCharacterStream(java.lang.String columnName, java.io.Reader reader, int length) throws java.sql.SQLException
updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateCharacterStream
in interface java.sql.ResultSet
columnName
- the name of the columnreader
- the java.io.Reader
object containing
the new column valuelength
- the length of the stream
java.sql.SQLException
- if a database access error occurspublic void updateObject(java.lang.String columnName, java.lang.Object x, int scale) throws java.sql.SQLException
Object
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateObject
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column valuescale
- for java.sql.Types.DECIMAL
or java.sql.Types.NUMERIC
types,
this is the number of digits after the decimal point. For all other
types this value will be ignored.
java.sql.SQLException
- if a database access error occurspublic void updateObject(java.lang.String columnName, java.lang.Object x) throws java.sql.SQLException
Object
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateObject
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column value
java.sql.SQLException
- if a database access error occurspublic void insertRow() throws java.sql.SQLException
ResultSet
object and into the database.
The cursor must be on the insert row when this method is called.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
insertRow
in interface java.sql.ResultSet
java.sql.SQLException
- if a database access error occurs,
if this method is called when the cursor is not on the insert row,
or if not all of non-nullable columns in
the insert row have been given a valuepublic void updateRow() throws java.sql.SQLException
ResultSet
object.
This method cannot be called when the cursor is on the insert row.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateRow
in interface java.sql.ResultSet
java.sql.SQLException
- if a database access error occurs or
if this method is called when the cursor is on the insert rowpublic void deleteRow() throws java.sql.SQLException
ResultSet
object
and from the underlying database. This method cannot be called when
the cursor is on the insert row.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
deleteRow
in interface java.sql.ResultSet
java.sql.SQLException
- if a database access error occurs
or if this method is called when the cursor is on the insert rowpublic void refreshRow() throws java.sql.SQLException
The refreshRow
method provides a way for an
application to
explicitly tell the JDBC driver to refetch a row(s) from the
database. An application may want to call refreshRow
when
caching or prefetching is being done by the JDBC driver to
fetch the latest value of a row from the database. The JDBC driver
may actually refresh multiple rows at once if the fetch size is
greater than one.
All values are refetched subject to the transaction isolation
level and cursor sensitivity. If refreshRow
is called
after calling an updater method, but before calling
the method updateRow
, then the
updates made to the row are lost. Calling the method
refreshRow
frequently will likely slow performance.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
refreshRow
in interface java.sql.ResultSet
java.sql.SQLException
- if a database access error
occurs or if this method is called when the cursor is on the insert rowpublic void cancelRowUpdates() throws java.sql.SQLException
ResultSet
object.
This method may be called after calling an
updater method(s) and before calling
the method updateRow
to roll back
the updates made to a row. If no updates have been made or
updateRow
has already been called, this method has no
effect.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
cancelRowUpdates
in interface java.sql.ResultSet
java.sql.SQLException
- if a database access error
occurs or if this method is called when the cursor is
on the insert rowpublic void moveToInsertRow() throws java.sql.SQLException
insertRow
methods may be
called when the cursor is on the insert row. All of the columns in
a result set must be given a value each time this method is
called before calling insertRow
.
An updater method must be called before a
getter method can be called on a column value.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
moveToInsertRow
in interface java.sql.ResultSet
java.sql.SQLException
- if a database access error occurs
or the result set is not updatablepublic void moveToCurrentRow() throws java.sql.SQLException
Including 1.7.2, HSQLDB does not support updateable result sets.
This method is ignored.
moveToCurrentRow
in interface java.sql.ResultSet
java.sql.SQLException
- if a database access error occurs
or the result set is not updatablepublic java.sql.Statement getStatement() throws java.sql.SQLException
Statement
object that produced this
ResultSet
object.
If the result set was generated some other way, such as by a
DatabaseMetaData
method, this method returns
null
.
getStatement
in interface java.sql.ResultSet
Statment
object that produced
this ResultSet
object or null
if the result set was produced some other way
java.sql.SQLException
- if a database access error occurspublic java.lang.Object getObject(int i, java.util.Map map) throws java.sql.SQLException
ResultSet
object as an Object
in the Java programming language.
If the value is an SQL NULL
,
the driver returns a Java null
.
This method uses the given Map
object
for the custom mapping of the
SQL structured or distinct type that is being retrieved.
Including 1.7.2, HSQLDB does not support this feature.
This method always throws an SQLException
,
stating that the operation is not supported.
getObject
in interface java.sql.ResultSet
i
- the first column is 1, the second is 2, ...map
- a java.util.Map
object that contains the
mapping from SQL type names to classes in the Java programming
language
Object
in the Java programming language
representing the SQL value
java.sql.SQLException
- if a database access error occurspublic java.sql.Ref getRef(int i) throws java.sql.SQLException
ResultSet
object as a Ref
object
in the Java programming language.
Including 1.7.2, HSQLDB does not support this feature.
This method always throws an SQLException
stating that the operation is not supported.
getRef
in interface java.sql.ResultSet
i
- the first column is 1, the second is 2, ...
Ref
object representing an SQL REF
value
java.sql.SQLException
- if a database access error occurspublic java.sql.Blob getBlob(int i) throws java.sql.SQLException
ResultSet
object as a Blob
object
in the Java programming language.
Starting with 1.7.2, this feature is supported.
getBlob
in interface java.sql.ResultSet
i
- the first column is 1, the second is 2, ...
Blob
object representing the SQL
BLOB
value in the specified column
java.sql.SQLException
- if a database access error occurspublic java.sql.Clob getClob(int i) throws java.sql.SQLException
ResultSet
object as a Clob
object
in the Java programming language.
Starting with 1.7.2, this feature is supported.
getClob
in interface java.sql.ResultSet
i
- the first column is 1, the second is 2, ...
Clob
object representing the SQL
CLOB
value in the specified column
java.sql.SQLException
- if a database access error occurspublic java.sql.Array getArray(int i) throws java.sql.SQLException
ResultSet
object as an Array
object
in the Java programming language.
Including 1.7.2, HSQLDB does not support this feature.
This method always throws an SQLException
stating that the operation is not supported.
getArray
in interface java.sql.ResultSet
i
- the first column is 1, the second is 2, ...
Array
object representing the SQL
ARRAY
value in the specified column
java.sql.SQLException
- if a database access error occurspublic java.lang.Object getObject(java.lang.String colName, java.util.Map map) throws java.sql.SQLException
ResultSet
object as an Object
in the Java programming language.
If the value is an SQL NULL
,
the driver returns a Java null
.
This method uses the specified Map
object for
custom mapping if appropriate.
Including 1.7.2, HSQLDB does not support this feature.
This method always throws an SQLException
stating that the operation is not supported.
getObject
in interface java.sql.ResultSet
colName
- the name of the column from which to retrieve the valuemap
- a java.util.Map
object that contains the
mapping from SQL type names to classes in the Java programming
language
Object
representing the SQL value in the
specified column
java.sql.SQLException
- if a database access error occurspublic java.sql.Ref getRef(java.lang.String colName) throws java.sql.SQLException
ResultSet
object as a Ref
object
in the Java programming language.
Including 1.7.2, HSQLDB does not support this feature.
This method always throws an SQLException
,
stating that the operartion is not supported.
getRef
in interface java.sql.ResultSet
colName
- the column name
Ref
object representing the SQL REF
value in the specified column
java.sql.SQLException
- if a database access error occurspublic java.sql.Blob getBlob(java.lang.String colName) throws java.sql.SQLException
ResultSet
object as a Blob
object
in the Java programming language.
Starting with 1.7.2, this feature is supported.
getBlob
in interface java.sql.ResultSet
colName
- the name of the column from which to retrieve the value
Blob
object representing the
SQL BLOB
value in the specified column
java.sql.SQLException
- if a database access error occurspublic java.sql.Clob getClob(java.lang.String colName) throws java.sql.SQLException
ResultSet
object as a Clob
object
in the Java programming language.
Starting with 1.7.2, this feature is supported.
getClob
in interface java.sql.ResultSet
colName
- the name of the column from which to retrieve the value
Clob
object representing the SQL
CLOB
value in the specified column
java.sql.SQLException
- if a database access error occurspublic java.sql.Array getArray(java.lang.String colName) throws java.sql.SQLException
ResultSet
object as an Array
object
in the Java programming language.
Including 1.7.2, HSQLDB does not support this feature.
This method always throws an SQLException
stating that the operation is not supported.
getArray
in interface java.sql.ResultSet
colName
- the name of the column from which to retrieve the value
Array
object representing the SQL
ARRAY
value in the specified column
java.sql.SQLException
- if a database access error occurspublic java.sql.Date getDate(int columnIndex, java.util.Calendar cal) throws java.sql.SQLException
ResultSet
object as a
java.sql.Date
object
in the Java programming language.
This method uses the given calendar to construct an appropriate
millisecond value for the date if the underlying database does
not store timezone information.
getDate
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...cal
- the java.util.Calendar
object
to use in constructing the date
java.sql.Date
object;
if the value is SQL NULL
, the value returned is
null
in the Java programming language
java.sql.SQLException
- if a database access error occurspublic java.sql.Date getDate(java.lang.String columnName, java.util.Calendar cal) throws java.sql.SQLException
ResultSet
object as a java.sql.Date
object in the Java programming language.
This method uses the given calendar to construct an appropriate
millisecond
value for the date if the underlying database does not store
timezone information.
getDate
in interface java.sql.ResultSet
columnName
- the SQL name of the column from which to retrieve the
valuecal
- the java.util.Calendar
object
to use in constructing the date
java.sql.Date
object;
if the value is SQL NULL
,
the value returned is null
in the Java programming
language
java.sql.SQLException
- if a database access error occurspublic java.sql.Time getTime(int columnIndex, java.util.Calendar cal) throws java.sql.SQLException
ResultSet
object as a java.sql.Time
object in the Java programming language.
This method uses the given calendar to construct an appropriate
millisecond value for the time if the underlying database does not
store timezone information.
getTime
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...cal
- the java.util.Calendar
object
to use in constructing the time
java.sql.Time
object;
if the value is SQL NULL
,
the value returned is null
in the Java programming
language
java.sql.SQLException
- if a database access error occurspublic java.sql.Time getTime(java.lang.String columnName, java.util.Calendar cal) throws java.sql.SQLException
ResultSet
object as
a java.sql.Time
object
in the Java programming language.
This method uses the given calendar to construct an appropriate
millisecond
value for the time if the underlying database does not store
timezone information.
getTime
in interface java.sql.ResultSet
columnName
- the SQL name of the columncal
- the java.util.Calendar
object
to use in constructing the time
java.sql.Time
object;
if the value is SQL NULL
,
the value returned is null
in the Java programming
language
java.sql.SQLException
- if a database access error occurspublic java.sql.Timestamp getTimestamp(int columnIndex, java.util.Calendar cal) throws java.sql.SQLException
ResultSet
object as a
java.sql.Timestamp
object in the Java programming
anguage.
This method uses the given calendar to construct an appropriate
millisecond value for the timestamp if the underlying database does
not store timezone information.
getTimestamp
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...cal
- the java.util.Calendar
object
to use in constructing the timestamp
java.sql.Timestamp
object;
if the value is SQL NULL
,
the value returned is null
in the Java programming
language
java.sql.SQLException
- if a database access error occurspublic java.sql.Timestamp getTimestamp(java.lang.String columnName, java.util.Calendar cal) throws java.sql.SQLException
ResultSet
object as a
java.sql.Timestamp
object in the Java programming
language.
This method uses the given calendar to construct an appropriate
millisecond value for the timestamp if the underlying database does
not store timezone information.
getTimestamp
in interface java.sql.ResultSet
columnName
- the SQL name of the columncal
- the java.util.Calendar
object
to use in constructing the date
java.sql.Timestamp
object;
if the value is SQL NULL
,
the value returned is null
in the Java programming
language
java.sql.SQLException
- if a database access error occurspublic java.net.URL getURL(int columnIndex) throws java.sql.SQLException
ResultSet
object as a java.net.URL
object in the Java programming language.
Including 1.7.2, HSQLDB does not support this feature.
This method always throws an SQLException
stating that the operation is not supported.
getURL
in interface java.sql.ResultSet
columnIndex
- the index of the column 1 is the first, 2
is the second,...
java.net.URL
object;
if the value is SQL NULL
, the value returned
is null
in the Java programming language
java.sql.SQLException
- if a database access error occurs,
or if a URL is malformedpublic java.net.URL getURL(java.lang.String columnName) throws java.sql.SQLException
ResultSet
object as a java.net.URL
object in the Java programming language.
Including 1.7.2, HSQLDB does not support this feature.
This method always throws an SQLException
stating that the operation is not supported.
getURL
in interface java.sql.ResultSet
columnName
- the SQL name of the column
java.net.URL
object;
if the value is SQL NULL
, the value returned
is null
in the Java programming language
java.sql.SQLException
- if a database access error occurs
or if a URL is malformedpublic void updateRef(int columnIndex, java.sql.Ref x) throws java.sql.SQLException
java.sql.Ref
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException, stating that the operation is not supported.
updateRef
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateRef(java.lang.String columnName, java.sql.Ref x) throws java.sql.SQLException
java.sql.Ref
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException, stating that the operation is not supported.
updateRef
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateBlob(int columnIndex, java.sql.Blob x) throws java.sql.SQLException
java.sql.Blob
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException, stating that the operation is not supported.
updateBlob
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateBlob(java.lang.String columnName, java.sql.Blob x) throws java.sql.SQLException
java.sql.Blob
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException, stating that the operation is not supported.
updateBlob
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateClob(int columnIndex, java.sql.Clob x) throws java.sql.SQLException
java.sql.Clob
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException, stating that the operation is not supported.
updateClob
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateClob(java.lang.String columnName, java.sql.Clob x) throws java.sql.SQLException
java.sql.Clob
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException, stating that the operation is not supported.
updateClob
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateArray(int columnIndex, java.sql.Array x) throws java.sql.SQLException
java.sql.Array
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException stating that the operation is not supported.
updateArray
in interface java.sql.ResultSet
columnIndex
- the first column is 1, the second is 2, ...x
- the new column value
java.sql.SQLException
- if a database access error occurspublic void updateArray(java.lang.String columnName, java.sql.Array x) throws java.sql.SQLException
java.sql.Array
value.
The updater methods are used to update column values in the
current row or the insert row. The updater methods do not
update the underlying database; instead the updateRow
or
insertRow
methods are called to update the database.
Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException, stating that the operation is not supported.
updateArray
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column value
java.sql.SQLException
- if a database access error occurs
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Including 1.7.2, HSQLDB does not support updateable result sets.
This method always throws an SQLException, stating that the operation is not supported.
updateArray
in interface java.sql.ResultSet
columnName
- the name of the columnx
- the new column value
java.sql.SQLException
- if a database access error occurs
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