Package org.apache.openjpa.util

Class CollectionChangeTrackerImpl

java.lang.Object

org.apache.openjpa.util.AbstractChangeTracker

org.apache.openjpa.util.CollectionChangeTrackerImpl

All Implemented Interfaces:

ChangeTracker, CollectionChangeTracker

Direct Known Subclasses:

DelayedCollectionChangeTrackerImpl

public class CollectionChangeTrackerImpl
extends AbstractChangeTracker
implements CollectionChangeTracker

Default CollectionChangeTracker.

Author:

Abe White

Field Summary

Fields

Modifier and Type	Field	Description
protected final Collection	_coll
protected final boolean	_dups
protected final boolean	_order

Fields inherited from class org.apache.openjpa.util.AbstractChangeTracker

add, change, rem

Constructor Summary

Constructors

Constructor	Description
CollectionChangeTrackerImpl(Collection coll, boolean dups, boolean order, boolean autoOff)	Constructor.

Method Summary

Modifier and Type	Method	Description
protected void	add(Object elem)	Mark the given value as added.
void	added(Object elem)	Notify the tracker that the given object was added.
boolean	allowsDuplicates()	Whether the underlying collection allows duplicates.
protected void	change(Object elem)	Mark the given value as changed.
protected int	initialSequence()	Return the initial sequence value for this proxy.
boolean	isOrdered()	Whether the underlying collection is ordered.
protected void	remove(Object elem)	Mark the given value as removed.
void	removed(Object elem)	Notify the tracker that the given object was removed.

Methods inherited from class org.apache.openjpa.util.AbstractChangeTracker

changed, getAdded, getAutoOff, getChanged, getNextSequence, getRemoved, isTracking, newSet, reset, setAutoOff, setNextSequence, startTracking, stopTracking

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.openjpa.util.ChangeTracker

getAdded, getChanged, getNextSequence, getRemoved, isTracking, setNextSequence, startTracking, stopTracking

Field Details

_coll

protected final Collection _coll

_dups

protected final boolean _dups

_order

protected final boolean _order

Constructor Details

CollectionChangeTrackerImpl

public CollectionChangeTrackerImpl(Collection coll,
 boolean dups,
 boolean order,
 boolean autoOff)

Constructor.

Parameters:

coll - the collection to delegate to

dups - true if the collection allows duplicates, false otherwise

order - true if the collection is ordered, false otherwise

Method Details

allowsDuplicates

public boolean allowsDuplicates()

Whether the underlying collection allows duplicates.

isOrdered

public boolean isOrdered()

Whether the underlying collection is ordered.

added

public void added(Object elem)

Description copied from class: AbstractChangeTracker

Notify the tracker that the given object was added.

Specified by:

added in interface CollectionChangeTracker

Overrides:

added in class AbstractChangeTracker

removed

public void removed(Object elem)

Description copied from class: AbstractChangeTracker

Notify the tracker that the given object was removed.

Specified by:

removed in interface CollectionChangeTracker

Overrides:

removed in class AbstractChangeTracker

initialSequence

protected int initialSequence()

Description copied from class: AbstractChangeTracker

Return the initial sequence value for this proxy. Typically this is the container size. Assumes an unordered collection by default, returning 0.

Overrides:

initialSequence in class AbstractChangeTracker

add

protected void add(Object elem)

Description copied from class: AbstractChangeTracker

Mark the given value as added.

Specified by:

add in class AbstractChangeTracker

remove

protected void remove(Object elem)

Description copied from class: AbstractChangeTracker

Mark the given value as removed.

Specified by:

remove in class AbstractChangeTracker

change

protected void change(Object elem)

Description copied from class: AbstractChangeTracker

Mark the given value as changed.

Specified by:

change in class AbstractChangeTracker