/*
 * 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.
 *
 */

/* $Id$  */

package org.apache.lenya.cms.cocoon.acting;

import java.util.HashMap;
import java.util.Map;

import org.apache.avalon.framework.parameters.Parameters;
import org.apache.cocoon.acting.ServiceableAction;
import org.apache.cocoon.environment.ObjectModelHelper;
import org.apache.cocoon.environment.Redirector;
import org.apache.cocoon.environment.Request;
import org.apache.cocoon.environment.Session;
import org.apache.cocoon.environment.SourceResolver;
import org.apache.lenya.cms.cocoon.task.CocoonTaskWrapper;
import org.apache.lenya.cms.task.TaskWrapper;

/**
 * An action that executes a task.
 */
public class TaskAction extends ServiceableAction {
    
    /**
     * @see org.apache.cocoon.acting.Action#act(org.apache.cocoon.environment.Redirector, org.apache.cocoon.environment.SourceResolver, java.util.Map, java.lang.String, org.apache.avalon.framework.parameters.Parameters)
     */
    public java.util.Map act(
        Redirector redirector,
        SourceResolver sourceResolver,
        Map objectModel,
        String str,
        Parameters parameters)
        throws java.lang.Exception {

        TaskWrapper wrapper = new CocoonTaskWrapper(objectModel, parameters, this.manager);
        wrapper.execute();

        Request request = ObjectModelHelper.getRequest(objectModel);

        //------------------------------------------------------------
        // get session
        //------------------------------------------------------------
        Session session = request.getSession(true);

        if (session == null) {
            getLogger().error("No session object");

            return null;
        }

        //------------------------------------------------------------
        // Return referer
        //------------------------------------------------------------
        String parent_uri =
            (String) session.getAttribute(
                "org.apache.lenya.cms.cocoon.acting.TaskAction.parent_uri");
        HashMap actionMap = new HashMap();
        actionMap.put("parent_uri", parent_uri);
        session.removeAttribute("org.apache.lenya.cms.cocoon.acting.TaskAction.parent_uri");

        return actionMap;
    }
}