com.goldencode.p2j.util

Class TransactionManager.UndoableHelper

java.lang.Object

com.goldencode.p2j.util.TransactionManager.UndoableHelper

Enclosing class:

TransactionManager

static class TransactionManager.UndoableHelper
extends java.lang.Object

Helper class to expose context-local state for undoable support.

Field Summary

Fields

Modifier and Type	Field and Description
private TransactionManager.WorkArea	wa The TransactionManager.WorkArea instance.

Constructor Summary

Constructors

Constructor and Description
UndoableHelper(TransactionManager.WorkArea wa) Create a new instance and associate the given WorkArea instance.

Method Summary

Modifier and Type	Method and Description
ErrorManager.ErrorHelper	getErrorHelper() Obtain the context-local error helper.
boolean	processUndoables(boolean currentBlock) Check if undoable can be processed.
int	registerUndoable(LazyUndoable src) Register the undoable with all transaction blocks (currently in the stack) started after the given transaction level.

Methods inherited from class java.lang.Object

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

Field Detail

wa

private TransactionManager.WorkArea wa

The TransactionManager.WorkArea instance.

Constructor Detail

UndoableHelper

public UndoableHelper(TransactionManager.WorkArea wa)

Create a new instance and associate the given WorkArea instance.

Parameters:

wa - The TransactionManager.WorkArea instance.

Method Detail

getErrorHelper

public ErrorManager.ErrorHelper getErrorHelper()

Obtain the context-local error helper.

Returns:

The error helper.

registerUndoable

public int registerUndoable(LazyUndoable src)

Register the undoable with all transaction blocks (currently in the stack) started after the given transaction level.

Parameters:

src - The undoable instance.

Returns:

The current transaction level, as in TransactionManager.WorkArea.txNestingLevel.

processUndoables

public boolean processUndoables(boolean currentBlock)

Check if undoable can be processed.

Parameters:

currentBlock - true to check only for the current block; false to check only if a transaction has been started.

Returns:

true if undoable can be processed.