public abstract class SortScan extends Scan
Modifier and Type | Field and Description |
---|---|
protected DataValueDescriptor[] |
current
The row at the current position of the scan, from which
fetch will return values.
|
protected boolean |
hold
The row at the current position of the scan, from which
fetch will return values.
|
protected MergeSort |
sort
The sort that this class is scanning.
|
protected TransactionManager |
tran
The transactionManager that opened this scan.
|
GE, GT, NA
Constructor and Description |
---|
SortScan(MergeSort sort,
TransactionManager tran,
boolean hold) |
Modifier and Type | Method and Description |
---|---|
void |
close()
Close the scan.
|
void |
fetch(DataValueDescriptor[] result)
Fetch the row at the current position of the Scan.
|
boolean |
fetchNext(DataValueDescriptor[] row)
Fetch the row at the next position of the Scan.
|
void |
fetchWithoutQualify(DataValueDescriptor[] result)
Fetch the row at the current position of the Scan and does not apply the
qualifiers.
|
delete, didNotQualify, doesCurrentPositionQualify, fetchLocation, fetchNextGroup, fetchNextGroup, fetchSet, getAllScanInfo, getEstimatedRowCount, getScanInfo, isCurrentPositionDeleted, isHeldAfterCommit, isKeyed, isTableLocked, newRowLocationTemplate, positionAtRowLocation, reopenScan, reopenScanByRowLocation, replace, setEstimatedRowCount
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
closeForEndTransaction
next
next
protected MergeSort sort
protected TransactionManager tran
protected DataValueDescriptor[] current
protected boolean hold
SortScan(MergeSort sort, TransactionManager tran, boolean hold)
public final boolean fetchNext(DataValueDescriptor[] row) throws StandardException
row
- The template row into which the value
of the next position in the scan is to be stored.StandardException
- Standard exception policy.ScanController.fetch(org.apache.derby.iapi.types.DataValueDescriptor[])
,
RowUtil
public final void fetch(DataValueDescriptor[] result) throws StandardException
result
- The row into which the value of the current
position in the scan is to be stored.StandardException
- Standard exception policy.ScanController.fetch(org.apache.derby.iapi.types.DataValueDescriptor[])
public final void fetchWithoutQualify(DataValueDescriptor[] result) throws StandardException
result
- The row into which the value of the current
position in the scan is to be stored.StandardException
- Standard exception policy.ScanController.fetchWithoutQualify(org.apache.derby.iapi.types.DataValueDescriptor[])
public void close()
Apache Derby V10.13 Internals - Copyright © 2004,2016 The Apache Software Foundation. All Rights Reserved.