RELEASE_2_1_13/src/blocks/portal/java/org/apache/cocoon/portal/aspect/AspectDataStore.java

/*
 * 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.
 */
package org.apache.cocoon.portal.aspect;

/**
 * An aspect data store is a component that manages aspect data objects.
 * For example, one implementation stores them temporary for the current
 * request, another one in the session and a third one persistent.
 * 
 * @author <a href="mailto:cziegeler@s-und-n.de">Carsten Ziegeler</a>
 * 
 * @version CVS $Id$
 */
public interface AspectDataStore {
    
    String ROLE = AspectDataStore.class.getName();

    Object getAspectData(Aspectalizable owner, String aspectName);
    
    void setAspectData(Aspectalizable owner, String aspectName, Object data);

    /**
     * Is the data persistent
     */
    boolean isPersistent();

}