/*
* 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.synapse.mediators;
import org.apache.synapse.ManagedLifecycle;
import org.apache.synapse.Mediator;
import java.util.List;
/**
* The List mediator executes a given sequence/list of child mediators.
* <p>
* This interface extends {@link ManagedLifecycle}. An implementations must
* propagate lifecycle events to all children implementing the ManagedLifecycle
* interface.
*/
public interface ListMediator extends Mediator, ManagedLifecycle {
/**
* Appends the specified mediator to the end of this mediator's (children) list
* @param m the mediator to be added
* @return true (as per the general contract of the Collection.add method)
*/
public boolean addChild(Mediator m);
/**
* Appends all of the mediators in the specified collection to the end of this mediator's (children)
* list, in the order that they are returned by the specified collection's iterator
* @param c the list of mediators to be added
* @return true if this list changed as a result of the call
*/
public boolean addAll(List<Mediator> c);
/**
* Returns the mediator at the specified position
* @param pos index of mediator to return
* @return the mediator at the specified position in this list
*/
public Mediator getChild(int pos);
/**
* Removes the first occurrence in this list of the specified mediator
* @param m mediator to be removed from this list, if present
* @return true if this list contained the specified mediator
*/
public boolean removeChild(Mediator m);
/**
* Removes the mediator at the specified position in this list
* @param pos the index of the mediator to remove
* @return the mediator previously at the specified position
*/
public Mediator removeChild(int pos);
/**
* Return the list of mediators of this List mediator instance
* @return the child/sub mediator list
*/
public List<Mediator> getList();
}