package org.apache.onami.cache;
   
   /*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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.
   */
  
  import javax.cache.Cache;
  import javax.cache.annotation.CacheInvocationContext;
  import javax.cache.annotation.CacheKey;
  import javax.cache.annotation.CacheKeyInvocationContext;
  import javax.cache.annotation.CachePut;
  
  import org.aopalliance.intercept.MethodInvocation;
  
  final class CachePutInterceptor
      extends AfterBeforeInvocationInterceptor<CachePut>
  {
  
      @Override
      public Class<CachePut> getInterceptedAnnotationType()
      {
          return CachePut.class;
      }
  
      @Override
      protected void hitCache( CacheInvocationContext<CachePut> context )
      {
          CacheKeyInvocationContext<CachePut> keyedContext = (CacheKeyInvocationContext<CachePut>) context;
          Object value = keyedContext.getValueParameter().getValue();
  
          if ( value == null )
          {
              if ( context.getCacheAnnotation().cacheNull() )
              {
                  // Null values are cached, set value to the null placeholder
                  value = NULL_PLACEHOLDER;
              }
              else
              {
                  // Ignore null values
                  return;
              }
          }
  
          Cache<Object, Object> cache = getCacheResolverFactory( context ).getCacheResolver( context ).resolveCache( context );
          CacheKey cacheKey = getCacheKeyGenerator( context ).generateCacheKey( keyedContext );
          cache.put( cacheKey, value );
      }
  
  }