ome.tools.hibernate

Class UpdateFilter

java.lang.Object

ome.util.ContextFilter

ome.tools.hibernate.UpdateFilter

All Implemented Interfaces:

Filter

Direct Known Subclasses:

ReloadFilter

public class UpdateFilter
extends ContextFilter

responsible for correlating entity identities during multiple calls to merge. This occurs when collections or arrays are passed into the UpdateImpl save methods.

Since:

3.0-M3

Version:

$Revision$, $Date$

Author:

Josh Moore, josh.moore at gmx.de

See Also:

IUpdate, UpdateImpl

Field Summary

Fields inherited from class ome.util.ContextFilter

_cache, _context

Constructor Summary

Constructors

Constructor and Description
UpdateFilter()

Method Summary

Methods

Modifier and Type	Method and Description
protected boolean	alreadySeen(Object o)
Collection	filter(String fieldId, Collection c) overrides ContextFilter.filter(String, Collection) to return previously checked collections.
Filterable	filter(String fieldId, Filterable f) overrides ContextFilter.filter(String, Filterable) to return previously merged or previously checked items.
Map	filter(String fieldId, Map m) Prevents CountPerOwner from being loaded unnecessarily.
Object	filter(String fieldId, Object o) overrides ContextFilter.filter(String, Object) to allow only certain types to enter the Hibernate system
protected boolean	hasReplacement(Object o)
protected Object	returnSeen(Object o)
void	unloadReplacedObjects() provides an external hook to unload all files which have already been merged.

Methods inherited from class ome.util.ContextFilter

addSeen, afterFilter, beforeFilter, currentContext, doFilter, doFilter, doFilter, enter, exit, filter, hasntSeen, pop, previousContext, push

Methods inherited from class java.lang.Object

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

Constructor Detail

UpdateFilter

public UpdateFilter()

Method Detail

unloadReplacedObjects

public void unloadReplacedObjects()

provides an external hook to unload all files which have already been merged.

Merging produces a copy of an entity, so that all old entities should be considered stale. By unloading them, one is forcing the API user to use the replacement instead.

The replacement is set by MergeEventListener and this is the signal that that entity can be unloaded. Usually, this method is invoked by UpdateImpl

See Also:

MergeEventListener, UpdateImpl, IObject.unload()

filter

public Object filter(String fieldId,
            Object o)

overrides ContextFilter.filter(String, Object) to allow only certain types to enter the Hibernate system

Specified by:

filter in interface Filter

Overrides:

filter in class ContextFilter

filter

public Filterable filter(String fieldId,
                Filterable f)

overrides ContextFilter.filter(String, Filterable) to return previously merged or previously checked items.

Specified by:

filter in interface Filter

Overrides:

filter in class ContextFilter

filter

public Collection filter(String fieldId,
                Collection c)

overrides ContextFilter.filter(String, Collection) to return previously checked collections.

Specified by:

filter in interface Filter

Overrides:

filter in class ContextFilter

filter

public Map filter(String fieldId,
         Map m)

Prevents CountPerOwner from being loaded unnecessarily.

Specified by:

filter in interface Filter

Overrides:

filter in class ContextFilter

See Also:

ticket:3978

hasReplacement

protected boolean hasReplacement(Object o)

alreadySeen

protected boolean alreadySeen(Object o)

returnSeen

protected Object returnSeen(Object o)