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

Class BTreeRowPosition

java.lang.Object

org.apache.derby.impl.store.access.conglomerate.RowPosition

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

public class BTreeRowPosition
extends RowPosition

Field Summary

Fields

Modifier and Type	Field and Description
LeafControlRow	current_leaf
RowLocation	current_lock_row_loc
DataValueDescriptor[]	current_lock_template
DataValueDescriptor[]	current_positionKey Fields of the class

Fields inherited from class org.apache.derby.impl.store.access.conglomerate.RowPosition

current_page, current_pageno, current_rh, current_rh_qualified, current_slot

Constructor Summary

Constructors

Constructor and Description
BTreeRowPosition(BTreeScan parent) Constructors for This class:

Method Summary

Modifier and Type	Method and Description
void	init() Public Methods of This class:
void	saveMeAndReleasePage() Save this position by key and release the latch on the current leaf.
java.lang.String	toString()
void	unlatch()

Methods inherited from class org.apache.derby.impl.store.access.conglomerate.RowPosition

positionAtNextSlot, positionAtPrevSlot

Methods inherited from class java.lang.Object

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

Field Detail

current_positionKey

public DataValueDescriptor[] current_positionKey

Fields of the class

current_leaf

public LeafControlRow current_leaf

current_lock_template

public DataValueDescriptor[] current_lock_template

current_lock_row_loc

public RowLocation current_lock_row_loc

Constructor Detail

BTreeRowPosition

public BTreeRowPosition(BTreeScan parent)

Constructors for This class:

Method Detail

init

public void init()

Public Methods of This class:

Overrides:

init in class RowPosition

unlatch

public final void unlatch()

Overrides:

unlatch in class RowPosition

saveMeAndReleasePage

public void saveMeAndReleasePage()
                          throws StandardException

Save this position by key and release the latch on the current leaf.

Throws:

StandardException - if an error occurs while saving the position

See Also:

BTreeScan.savePositionAndReleasePage()

toString

public final java.lang.String toString()

Overrides:

toString in class RowPosition