com.sun.jersey.spi.container.CachedEntityContainerRequest Maven / Gradle / Ivy
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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);
}
}
}