org.trimou.engine.context

Class ValueWrapper

java.lang.Object

org.trimou.engine.resource.AbstractReleaseCallbackContainer

org.trimou.engine.context.ValueWrapper

All Implemented Interfaces:

ResolutionContext, ReleaseCallbackContainer

@Internal
public final class ValueWrapper
extends AbstractReleaseCallbackContainer
implements ResolutionContext

Wrapper for the resolved value object and release callbacks. It is not thread-safe. The AbstractReleaseCallbackContainer.release() method must be always called after the wrapper is used, even if the resolved object is null (there might be still some callbacks registered).

Author:

Martin Kouba

Constructor Summary

Constructors

Constructor and Description
ValueWrapper(String key)

Method Summary

Modifier and Type	Method and Description
Object	get()
EnhancedResolver.Hint	getHint() A hint is only set if a new instance is created during resolution.
String	getKey()
int	getKeyPartIndex()
boolean	isNull()

Methods inherited from class org.trimou.engine.resource.AbstractReleaseCallbackContainer

registerReleaseCallback, release

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.trimou.engine.resource.ReleaseCallbackContainer

registerReleaseCallback

Constructor Detail

ValueWrapper

public ValueWrapper(String key)

Parameters:

key -

Method Detail

get

public Object get()

Returns:

the resolved object or null if no such object exists

isNull

public boolean isNull()

Returns:

true if there is no wrapped value (resolved object), false otherwise

getKey

public String getKey()

Specified by:

getKey in interface ResolutionContext

Returns:

the variable tag key

getKeyPartIndex

public int getKeyPartIndex()

Specified by:

getKeyPartIndex in interface ResolutionContext

Returns:

the index of the part of the key which is currently processed

getHint

public EnhancedResolver.Hint getHint()

A hint is only set if a new instance is created during resolution.

Returns:

a new hint