CursorResultSet

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org.apache.derby.iapi.sql.execute
Interface CursorResultSet

All Superinterfaces:: org.apache.derby.iapi.sql.ResultSet

public interface CursorResultSet
extends org.apache.derby.iapi.sql.ResultSet

The CursorResultSet interface is used to provide additional operations on result sets that can be used in cursors.

Since the ResulSet operations must also be supported by cursor result sets, we extend that interface here as well.

Field Summary

Fields inherited from interface org.apache.derby.iapi.sql.ResultSet

CURRENT_RESULTSET_ONLY, ENTIRE_RESULTSET_TREE, ISAFTERLAST, ISBEFOREFIRST, ISFIRST, ISLAST

Method Summary

ExecRow getCurrentRow()
Returns the current row of the result set.

org.apache.derby.iapi.types.RowLocation getRowLocation()
Returns the row location of the current base table row of the cursor.

Methods inherited from interface org.apache.derby.iapi.sql.ResultSet

checkRowPosition, cleanUp, close, finish, getAbsoluteRow, getAutoGeneratedKeysResultset, getBeginExecutionTimestamp, getCursorName, getEndExecutionTimestamp, getExecuteTime, getFirstRow, getLastRow, getNextRow, getPreviousRow, getRelativeRow, getResultDescription, getRowNumber, getSubqueryTrackingArray, getTimeSpent, getWarnings, isClosed, modifiedRowCount, open, returnsRows, setAfterLastRow, setBeforeFirstRow

Method Detail

getRowLocation

public org.apache.derby.iapi.types.RowLocation getRowLocation()
                                                       throws org.apache.derby.iapi.error.StandardException

Returns the row location of the current base table row of the cursor. If this cursor's row is composed of multiple base tables' rows, i.e. due to a join, then a null is returned.

getCurrentRow

public ExecRow getCurrentRow()
                      throws org.apache.derby.iapi.error.StandardException

Returns the current row of the result set. REMIND: eventually, this will only return the current row for result sets that need to return it; either some field in the activation or a parameter in the constructor will be used to signal that this needs to function. This will let us limit the number of live objects we are holding on to.