001/*
002 *  Copyright 2012 Anyware Services
003 *
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package org.ametys.core.util.cocoon;
017
018import java.util.Iterator;
019import java.util.Map;
020
021import org.apache.avalon.framework.configuration.Configuration;
022import org.apache.avalon.framework.configuration.ConfigurationException;
023import org.apache.cocoon.components.modules.input.InputModule;
024import org.apache.cocoon.environment.ObjectModelHelper;
025
026/**
027 * This input module read in parent context.<br>
028 * Use it with {parent-context-attr:paramName}.
029 */
030public class ParentContextInputModule implements InputModule
031{
032
033    public Object getAttribute(String name, Configuration modeConf, Map objectModel) throws ConfigurationException
034    {
035        Map parameters = (Map) objectModel.get(ObjectModelHelper.PARENT_CONTEXT);
036        if (parameters == null)
037        {
038            return null;
039        }
040
041        return parameters.get(name);
042    }
043
044    public Iterator getAttributeNames(Configuration modeConf, Map objectModel) throws ConfigurationException
045    {
046        return null;
047    }
048
049    public Object[] getAttributeValues(String name, Configuration modeConf, Map objectModel) throws ConfigurationException
050    {
051        return new Object[] {getAttribute(name, modeConf, objectModel)};
052    }
053
054}