to.etc.webapp.query

Class DefaultBeforeImageCache

java.lang.Object

to.etc.webapp.query.DefaultBeforeImageCache

All Implemented Interfaces:

IBeforeImageCache

public class DefaultBeforeImageCache
extends Object
implements IBeforeImageCache

EXPERIMENTAL Default implementation of a before-image collecting cache, used for QDataContext#original().

Author:

Frits Jalvingh Created on Jan 13, 2014

Constructor Summary

Constructors

Constructor and Description
DefaultBeforeImageCache()

Method Summary

Modifier and Type	Method and Description
<T> T	createImage(Class<T> realclass, T instance, boolean loaded)
<T> T	findBeforeImage(T source) Returns any image, even if uninitialized.
<T> T	getBeforeImage(T instance) Returns an image and ensures it's initialized.
<T> boolean	isLoaded(T beforeImage)
boolean	wasNew()

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultBeforeImageCache

public DefaultBeforeImageCache()

Method Detail

createImage

@Nonnull
public <T> T createImage(@Nonnull
                                  Class<T> realclass,
                                  @Nonnull
                                  T instance,
                                  boolean loaded)
                           throws Exception

Specified by:

createImage in interface IBeforeImageCache

Throws:

Exception

wasNew

public boolean wasNew()

Specified by:

wasNew in interface IBeforeImageCache

findBeforeImage

public <T> T findBeforeImage(@Nonnull
                             T source)

Description copied from interface: IBeforeImageCache

Returns any image, even if uninitialized.

Specified by:

findBeforeImage in interface IBeforeImageCache

Returns:

getBeforeImage

public <T> T getBeforeImage(@Nonnull
                            T instance)

Description copied from interface: IBeforeImageCache

Returns an image and ensures it's initialized.

Specified by:

getBeforeImage in interface IBeforeImageCache

isLoaded

public <T> boolean isLoaded(@Nonnull
                            T beforeImage)

Specified by:

isLoaded in interface IBeforeImageCache