org.apache.derby.impl.store.access.btree

Class BTreeForwardScan

java.lang.Object

org.apache.derby.impl.store.access.btree.OpenBTree

org.apache.derby.impl.store.access.btree.BTreeScan

org.apache.derby.impl.store.access.btree.BTreeForwardScan

All Implemented Interfaces:

ScanManager, GenericScanController, GroupFetchScanController, RowCountable, ScanController

Direct Known Subclasses:

B2IForwardScan

public class BTreeForwardScan
extends BTreeScan

A b-tree scan controller corresponds to an instance of an open b-tree scan.

Concurrency Notes

The concurrency rules are derived from OpenBTree.

See Also:

OpenBTree

Field Summary

Fields inherited from interface org.apache.derby.iapi.store.access.ScanController

GE, GT, NA

Constructor Summary

Constructors

Constructor and Description
BTreeForwardScan()

Method Summary

Methods inherited from class org.apache.derby.impl.store.access.btree.BTreeScan

close, closeForEndTransaction, delete, didNotQualify, doesCurrentPositionQualify, fetch, fetchLocation, fetchNext, fetchNextGroup, fetchNextGroup, fetchSet, fetchWithoutQualify, getCurrentRecordHandleForDebugging, getScanInfo, init, isCurrentPositionDeleted, isHeldAfterCommit, isKeyed, newRowLocationTemplate, next, positionAtRowLocation, reopenScan, reopenScanByRowLocation, replace, toString

Methods inherited from class org.apache.derby.impl.store.access.btree.OpenBTree

checkConsistency, debugConglomerate, getColumnSortOrderInfo, getConglomerate, getContainer, getContainerHandle, getEstimatedRowCount, getHeight, getHold, getLockingPolicy, getLockLevel, getOpenMode, getRawTran, getRuntimeMem, getSpaceInfo, getXactMgr, init, isClosed, isTableLocked, reopen, setEstimatedRowCount, setLockingPolicy, test_errors

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.derby.iapi.store.access.GenericScanController

isTableLocked

Methods inherited from interface org.apache.derby.iapi.store.access.RowCountable

getEstimatedRowCount, setEstimatedRowCount

Constructor Detail

BTreeForwardScan

public BTreeForwardScan()