/* 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.riotfamily.common.web.cache.tags;
import org.hibernate.SessionFactory;
import org.riotfamily.common.collection.TypedList;
import org.riotfamily.common.hibernate.HibernateUtils;
import org.riotfamily.common.web.cache.TagCacheItems;
/**
* CacheTagGenerator that handles {@link TypedList typed lists} whose
* {@link TypedList#getItemClass() itemClass} is annotated with
* {@link TagCacheItems}.
*
* @see CacheTagUtils#getTag(Class)
* @see HibernateUtils#getIdAsString(SessionFactory, Object)
*/
public class TypedListCacheTagGenerator implements CacheTagGenerator {
public String generateTag(Object obj) {
if (obj instanceof TypedList<?>) {
TypedList<?> list = (TypedList<?>) obj;
Class<?> itemClass = list.getItemClass();
if (itemClass.isAnnotationPresent(TagCacheItems.class)) {
return CacheTagUtils.getTag(itemClass);
}
}
return null;
}
}