CursorResultSet (Apache Derby V10.14 Internals)

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Summary:
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All Superinterfaces:

ResultSet

All Known Implementing Classes:

BulkTableScanResultSet, CurrentOfResultSet, DependentResultSet, DistinctGroupedAggregateResultSet, DistinctScalarAggregateResultSet, DistinctScanResultSet, GroupedAggregateResultSet, HashJoinResultSet, HashLeftOuterJoinResultSet, HashScanResultSet, HashTableResultSet, IndexRowToBaseRowResultSet, JoinResultSet, MaterializedResultSet, MergeJoinResultSet, MultiProbeTableScanResultSet, NestedLoopJoinResultSet, NestedLoopLeftOuterJoinResultSet, NormalizeResultSet, ProjectRestrictResultSet, RowCountResultSet, RowResultSet, ScalarAggregateResultSet, ScrollInsensitiveResultSet, SetOpResultSet, SortResultSet, TableScanResultSet, TemporaryRowHolderResultSet, UnionResultSet, ValidateCheckConstraintResultSet, VTIResultSet
```
public interface CursorResultSet
extends 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

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`ExecRow`	`getCurrentRow()`	Returns the current row of the result set.
`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
addWarning, checkRowPosition, cleanUp, clearCurrentRow, close, finish, getAbsoluteRow, getActivation, getAutoGeneratedKeysResultset, getBeginExecutionTimestamp, getCursorName, getEndExecutionTimestamp, getExecuteTime, getFirstRow, getLastRow, getNextRow, getPreviousRow, getRelativeRow, getResultDescription, getRowNumber, getSubqueryTrackingArray, getTimeSpent, getWarnings, isClosed, modifiedRowCount, open, returnsRows, setAfterLastRow, setBeforeFirstRow, toXML

- Method Detail
  - getRowLocation
```
RowLocation getRowLocation()
                    throws 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.
    
    Returns:
    
    the row location of the current cursor row.
    
    Throws:
    
    StandardException - thrown on failure to get location from storage engine
  - getCurrentRow
```
ExecRow getCurrentRow()
               throws 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.
    
    Returns:
    
    the last row returned by getNextRow. null if closed.
    
    Throws:
    
    StandardException - thrown on failure.

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Built on Wed 2018-05-16 16:01:03+0000, from revision ???

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Apache Derby V10.14 Internals - Copyright © 2004,2018 The Apache Software Foundation. All Rights Reserved.