Module org.postgresql.pljava.internal

Package org.postgresql.pljava.jdbc

Class TriggerResultSet

java.lang.Object

org.postgresql.pljava.jdbc.AbstractResultSet

org.postgresql.pljava.jdbc.ObjectResultSet

org.postgresql.pljava.jdbc.SingleRowResultSet

org.postgresql.pljava.jdbc.TriggerResultSet

All Implemented Interfaces:

AutoCloseable, ResultSet, Wrapper

public class TriggerResultSet
extends SingleRowResultSet

A single row, updateable ResultSet specially made for triggers. The changes made to this ResultSet are remembered and converted to a SPI_modify_tuple call prior to function return.

Author:

Thomas Hallgren

Field Summary

Fields inherited from interface java.sql.ResultSet

CLOSE_CURSORS_AT_COMMIT, CONCUR_READ_ONLY, CONCUR_UPDATABLE, FETCH_FORWARD, FETCH_REVERSE, FETCH_UNKNOWN, HOLD_CURSORS_OVER_COMMIT, TYPE_FORWARD_ONLY, TYPE_SCROLL_INSENSITIVE, TYPE_SCROLL_SENSITIVE

Constructor Summary

Constructors

Constructor	Description
TriggerResultSet(TupleDesc tupleDesc, Tuple tuple, boolean readOnly)

Method Summary

Modifier and Type	Method	Description
void	cancelRowUpdates()	Cancel all changes made to the Tuple.
void	close()	Cancels all changes but doesn't really close the set.
Object[]	getChangeIndexesAndValues()	Return a 3 element array describing the changes that have been made to the contained Tuple.
int	getConcurrency()	Returns the concurrency for this ResultSet.
protected Object	getObjectValue(int columnIndex, Class<?> type)	If the value has not been changed, forwards to Tuple.getObject, with the usual behavior for type coercion; if it has been changed, returns the exact object that was supplied with the change.
protected TupleDesc	getTupleDesc()
boolean	isClosed()
boolean	rowUpdated()	Returns true if this row has been updated.
void	updateObject(int columnIndex, Object x)	Store this change for later use

Methods inherited from class org.postgresql.pljava.jdbc.SingleRowResultSet

absolute, afterLast, beforeFirst, deleteRow, findColumn, first, getFetchDirection, getFetchSize, getHoldability, getMetaData, getRow, getType, insertRow, isAfterLast, isBeforeFirst, isFirst, isLast, last, moveToCurrentRow, moveToInsertRow, next, previous, relative, rowDeleted, rowInserted, setFetchDirection, setFetchSize, updateObject, updateRow

Methods inherited from class org.postgresql.pljava.jdbc.ObjectResultSet

clearWarnings, getArray, getAsciiStream, getBigDecimal, getBigDecimal, getBinaryStream, getBlob, getBoolean, getByte, getBytes, getCharacterStream, getClob, getDate, getDate, getDouble, getFloat, getInt, getLong, getNumber, getObject, getObject, getObject, getObjectValue, getObjectValue, getRef, getShort, getString, getTime, getTime, getTimestamp, getTimestamp, getUnicodeStream, getURL, getValue, getValue, getWarnings, refreshRow, updateArray, updateAsciiStream, updateBigDecimal, updateBinaryStream, updateBlob, updateBoolean, updateByte, updateBytes, updateCharacterStream, updateClob, updateDate, updateDouble, updateFloat, updateInt, updateLong, updateNull, updateRef, updateShort, updateString, updateTime, updateTimestamp, wasNull

Methods inherited from class org.postgresql.pljava.jdbc.AbstractResultSet

getArray, getAsciiStream, getBigDecimal, getBigDecimal, getBinaryStream, getBlob, getBoolean, getByte, getBytes, getCharacterStream, getClob, getCursorName, getDate, getDate, getDouble, getFloat, getInt, getLong, getNCharacterStream, getNCharacterStream, getNClob, getNClob, getNString, getNString, getObject, getObject, getObject, getRef, getRowId, getRowId, getShort, getSQLXML, getSQLXML, getStatement, getString, getTime, getTime, getTimestamp, getTimestamp, getUnicodeStream, getURL, isWrapperFor, unwrap, updateArray, updateAsciiStream, updateAsciiStream, updateAsciiStream, updateAsciiStream, updateAsciiStream, updateBigDecimal, updateBinaryStream, updateBinaryStream, updateBinaryStream, updateBinaryStream, updateBinaryStream, updateBlob, updateBlob, updateBlob, updateBlob, updateBlob, updateBoolean, updateByte, updateBytes, updateCharacterStream, updateCharacterStream, updateCharacterStream, updateCharacterStream, updateCharacterStream, updateClob, updateClob, updateClob, updateClob, updateClob, updateDate, updateDouble, updateFloat, updateInt, updateLong, updateNCharacterStream, updateNCharacterStream, updateNCharacterStream, updateNCharacterStream, updateNClob, updateNClob, updateNClob, updateNClob, updateNClob, updateNClob, updateNString, updateNString, updateNull, updateObject, updateObject, updateRef, updateRowId, updateRowId, updateShort, updateSQLXML, updateSQLXML, updateString, updateTime, updateTimestamp

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.sql.ResultSet

updateObject, updateObject, updateObject, updateObject

Constructor Detail

TriggerResultSet

public TriggerResultSet(TupleDesc tupleDesc,
                        Tuple tuple,
                        boolean readOnly)
                 throws SQLException

Throws:

SQLException

Method Detail

cancelRowUpdates

public void cancelRowUpdates()
                      throws SQLException

Cancel all changes made to the Tuple.

Throws:

SQLException

close

public void close()
           throws SQLException

Cancels all changes but doesn't really close the set.

Throws:

SQLException

getConcurrency

public int getConcurrency()
                   throws SQLException

Returns the concurrency for this ResultSet.

Specified by:

getConcurrency in interface ResultSet

Overrides:

getConcurrency in class SingleRowResultSet

Throws:

SQLException

See Also:

ResultSet.getConcurrency()

rowUpdated

public boolean rowUpdated()
                   throws SQLException

Returns true if this row has been updated.

Throws:

SQLException

updateObject

public void updateObject(int columnIndex,
                         Object x)
                  throws SQLException

Store this change for later use

Throws:

SQLException

getChangeIndexesAndValues

public Object[] getChangeIndexesAndValues()

Return a 3 element array describing the changes that have been made to the contained Tuple. The first element the original Tuple, the second an int[] containing the index of each changed value, and the third an Object[] containing the corresponding values.

Returns:

The 3 element array or null if no change has been made.

getObjectValue

protected Object getObjectValue(int columnIndex,
                                Class<?> type)
                         throws SQLException

If the value has not been changed, forwards to Tuple.getObject, with the usual behavior for type coercion; if it has been changed, returns the exact object that was supplied with the change.

When the caller is the JDBC 4.1 ObjectResultSet.getObject(int,Class), the caller will check and complain if the returned object is not of the right class.

Specified by:

getObjectValue in class ObjectResultSet

Throws:

SQLException

getTupleDesc

protected final TupleDesc getTupleDesc()

Specified by:

getTupleDesc in class SingleRowResultSet

isClosed

public boolean isClosed()
                 throws SQLException

Throws:

SQLException