Package org.apache.cayenne.commitlog.model

Class MutableChangeMap

java.lang.Object

org.apache.cayenne.commitlog.model.MutableChangeMap

All Implemented Interfaces:

ChangeMap

public class MutableChangeMap
extends Object
implements ChangeMap

A mutable implementation of ChangeMap.

Since:

4.0

Constructor Summary

Constructors

Constructor	Description
MutableChangeMap()

Method Summary

Modifier and Type	Method	Description
MutableObjectChange	aliasId(org.apache.cayenne.ObjectId preCommitId, org.apache.cayenne.ObjectId postCommitId)
Map<org.apache.cayenne.ObjectId,? extends ObjectChange>	getChanges()	Returns a map of changes.
MutableObjectChange	getOrCreate(org.apache.cayenne.ObjectId id, ObjectChangeType type)
Collection<? extends ObjectChange>	getUniqueChanges()

Methods inherited from class java.lang.Object

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

Constructor Detail

MutableChangeMap

public MutableChangeMap()

Method Detail

getOrCreate

public MutableObjectChange getOrCreate(org.apache.cayenne.ObjectId id,
                                       ObjectChangeType type)

aliasId

public MutableObjectChange aliasId(org.apache.cayenne.ObjectId preCommitId,
                                   org.apache.cayenne.ObjectId postCommitId)

getUniqueChanges

public Collection<? extends ObjectChange> getUniqueChanges()

Specified by:

getUniqueChanges in interface ChangeMap

getChanges

public Map<org.apache.cayenne.ObjectId,? extends ObjectChange> getChanges()

Description copied from interface: ChangeMap

Returns a map of changes. Note the same change sometimes can be present in the map twice. If ObjectId of an object has changed during the commit, the change will be accessible by both pre-commit and post-commit ID. To get unique changes, call ChangeMap.getUniqueChanges().

Specified by:

getChanges in interface ChangeMap