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package com.sun.jersey.spi.container;

import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

/**
 * A cached entity in-bound HTTP request that caches the entity instance
 * obtained from the adapted container request.
 * 

* A filter may utilize this class if it requires an entity of a specific type * and that same type will also be utilized by a resource method. * * @author [email protected] */ public class CachedEntityContainerRequest extends AdaptingContainerRequest { Object entity; public CachedEntityContainerRequest(ContainerRequest acr) { super(acr); } /** * Get the entity or a cached instance. * * @return If called for the first time obtain the entity from the adapting * container request and cache the instance. If called for second or * subsequent time return the cached instance. * @throws ClassCastException if the cached entity cannot be cast to the * type requested. */ @Override public T getEntity(Class type) throws ClassCastException { if (entity == null) { T t = acr.getEntity(type); entity = t; return t; } else { return type.cast(entity); } } /** * Get the entity or a cached instance. * * @return If called for the first time obtain the entity from the adapting * container request and cache the instance. If called for second or * subsequent time return the cached instance. * @throws ClassCastException if the cached entity cannot be cast to the * type requested. */ @Override public T getEntity(Class type, Type genericType, Annotation[] as) throws ClassCastException { if (entity == null) { T t = acr.getEntity(type, genericType, as); entity = t; return t; } else { return type.cast(entity); } } }





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