Package com.db4o.internal.btree

Class BTreePatch

java.lang.Object

com.db4o.internal.btree.BTreePatch

Direct Known Subclasses:

BTreeAdd, BTreeUpdate

public abstract class BTreePatch
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field	Description
protected java.lang.Object	_object
protected Transaction	_transaction

Constructor Summary

Constructors

Constructor	Description
BTreePatch(Transaction transaction, java.lang.Object obj)

Method Summary

Modifier and Type	Method	Description
abstract java.lang.Object	commit(Transaction trans, BTree btree, BTreeNode node)
abstract BTreePatch	forTransaction(Transaction trans)
java.lang.Object	getObject()
boolean	isAdd()
boolean	isCancelledRemoval()
boolean	isRemove()
abstract java.lang.Object	key(Transaction trans)
abstract java.lang.Object	rollback(Transaction trans, BTree btree)
abstract int	sizeDiff(Transaction trans)
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

_transaction

protected final Transaction _transaction

_object

protected java.lang.Object _object

Constructor Detail

BTreePatch

public BTreePatch(Transaction transaction,
                  java.lang.Object obj)

Method Detail

commit

public abstract java.lang.Object commit(Transaction trans,
                                        BTree btree,
                                        BTreeNode node)

forTransaction

public abstract BTreePatch forTransaction(Transaction trans)

getObject

public java.lang.Object getObject()

isAdd

public boolean isAdd()

isCancelledRemoval

public boolean isCancelledRemoval()

isRemove

public boolean isRemove()

key

public abstract java.lang.Object key(Transaction trans)

rollback

public abstract java.lang.Object rollback(Transaction trans,
                                          BTree btree)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

sizeDiff

public abstract int sizeDiff(Transaction trans)