org.jsr107.ri.annotations.AbstractCacheRemoveEntryInterceptor Maven / Gradle / Ivy
/**
* Copyright 2011-2013 Terracotta, Inc.
* Copyright 2011-2013 Oracle America Incorporated
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jsr107.ri.annotations;
import javax.cache.Cache;
import javax.cache.annotation.CacheKeyGenerator;
import javax.cache.annotation.CacheRemove;
import javax.cache.annotation.CacheResolver;
import javax.cache.annotation.GeneratedCacheKey;
import java.lang.annotation.Annotation;
/**
* Interceptor for {@link javax.cache.annotation.CacheRemove}
*
* @param The intercepted method invocation
* @author Rick Hightower
* @author Eric Dalquist
* @since 1.0
*/
public abstract class AbstractCacheRemoveEntryInterceptor extends AbstractKeyedCacheInterceptor {
/**
* Handles the {@link Cache#remove(Object)} as specified for the {@link javax.cache.annotation.CacheRemove} annotation
*
* @param cacheContextSource The intercepted invocation
* @param invocation The intercepted invocation
* @return The result from {@link #proceed(Object)}
* @throws Throwable if {@link #proceed(Object)} threw
*/
public final Object cacheRemoveEntry(CacheContextSource cacheContextSource, I invocation) throws Throwable {
final InternalCacheKeyInvocationContext cacheKeyInvocationContext =
cacheContextSource.getCacheKeyInvocationContext(invocation);
final CacheRemoveEntryMethodDetails methodDetails =
this.getStaticCacheKeyInvocationContext(cacheKeyInvocationContext, InterceptorType.CACHE_REMOVE_ENTRY);
final CacheRemove cacheRemoveAnnotation = methodDetails.getCacheAnnotation();
final boolean afterInvocation = cacheRemoveAnnotation.afterInvocation();
//If pre-invocation - remove entry
if (!afterInvocation) {
cacheRemove(cacheKeyInvocationContext, methodDetails);
}
final Object result;
try {
//Call the annotated method
result = this.proceed(invocation);
} catch (Throwable t) {
if (afterInvocation) {
//If after invocation is true and if the throwable passes the include/exclude filters and then call remove
final Class[] evictFor = cacheRemoveAnnotation.evictFor();
final Class[] noEvictFor = cacheRemoveAnnotation.noEvictFor();
//Check for empty/null here since isIncluded returns true for those cases
final boolean cache = ClassFilter.isIncluded(t, evictFor, noEvictFor, false);
//Exception is included
if (cache) {
cacheRemove(cacheKeyInvocationContext, methodDetails);
}
}
throw t;
}
//If post-invocation - remove entry
if (afterInvocation) {
cacheRemove(cacheKeyInvocationContext, methodDetails);
}
return result;
}
/**
* Remove entry from cache
*
* @param cacheKeyInvocationContext The invocation context
* @param methodDetails The details about the cached method
*/
private void cacheRemove(final InternalCacheKeyInvocationContext cacheKeyInvocationContext,
final CacheRemoveEntryMethodDetails methodDetails) {
final CacheResolver cacheResolver = methodDetails.getCacheResolver();
final Cache cache = cacheResolver.resolveCache(cacheKeyInvocationContext);
final CacheKeyGenerator cacheKeyGenerator = methodDetails.getCacheKeyGenerator();
final GeneratedCacheKey cacheKey = cacheKeyGenerator.generateCacheKey(cacheKeyInvocationContext);
cache.remove(cacheKey);
}
}