package org.infinispan.jcache.annotation;
import org.infinispan.jcache.logging.Log;
import org.infinispan.util.logging.LogFactory;
import javax.cache.Cache;
import javax.cache.annotation.CacheKeyInvocationContext;
import javax.cache.annotation.CacheRemoveAll;
import javax.cache.annotation.CacheResolver;
import javax.cache.annotation.GeneratedCacheKey;
import javax.inject.Inject;
import javax.interceptor.AroundInvoke;
import javax.interceptor.Interceptor;
import javax.interceptor.InvocationContext;
import java.io.Serializable;
/**
* <p>{@link javax.cache.annotation.CacheRemoveAll} interceptor implementation. This interceptor uses the following algorithm describes in
* JSR-107.</p>
*
* <p>The interceptor that intercepts method annotated with {@code @CacheRemoveAll} must do the following, remove all
* entries associated with the cache. The removeAll occurs after the method body is executed. This can be overridden by
* specifying a afterInvocation attribute value of false. If afterInvocation is true and the annotated method throws an
* exception, the removeAll will not happen.</p>
*
* @author Kevin Pollet <kevin.pollet@serli.com> (C) 2011 SERLI
*/
@Interceptor
@CacheRemoveAll
public class CacheRemoveAllInterceptor implements Serializable {
private static final long serialVersionUID = -8763819640664021763L;
private static final Log log = LogFactory.getLog(CacheRemoveAllInterceptor.class, Log.class);
private final CacheResolver cacheResolver;
private final CacheKeyInvocationContextFactory contextFactory;
@Inject
public CacheRemoveAllInterceptor(CacheResolver cacheResolver, CacheKeyInvocationContextFactory contextFactory) {
this.cacheResolver = cacheResolver;
this.contextFactory = contextFactory;
}
@AroundInvoke
public Object cacheRemoveAll(InvocationContext invocationContext) throws Exception {
if (log.isTraceEnabled()) {
log.tracef("Interception of method named '%s'", invocationContext.getMethod().getName());
}
final CacheKeyInvocationContext<CacheRemoveAll> cacheKeyInvocationContext =
contextFactory.getCacheKeyInvocationContext(invocationContext);
final CacheRemoveAll cacheRemoveAll = cacheKeyInvocationContext.getCacheAnnotation();
final Cache<GeneratedCacheKey, Object> cache = cacheResolver.resolveCache(cacheKeyInvocationContext);
if (!cacheRemoveAll.afterInvocation()) {
cache.clear();
if (log.isTraceEnabled()) {
log.tracef("Clear cache '%s' before method invocation", cache.getName());
}
}
final Object result = invocationContext.proceed();
if (cacheRemoveAll.afterInvocation()) {
cache.clear();
if (log.isTraceEnabled()) {
log.tracef("Clear cache '%s' after method invocation", cache.getName());
}
}
return result;
}
}