core/src/main/java/org/apache/mina/common/IoFilterAdapter.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.mina.common;

/**
 * An abstract adapter class for {@link IoFilter}.  You can extend
 * this class and selectively override required event filter methods only.  All
 * methods forwards events to the next filter by default.
 * 
 * @author The Apache Directory Project (mina-dev@directory.apache.org)
 * @version $Rev$, $Date$
 */
public class IoFilterAdapter implements IoFilter
{
    public void init() throws Exception
    {
    }
    
    public void destroy() throws Exception
    {
    }

    public void onPreAdd( IoFilterChain parent, String name, NextFilter nextFilter ) throws Exception
    {
    }
    
    public void onPostAdd( IoFilterChain parent, String name, NextFilter nextFilter ) throws Exception
    {
    }
    
    public void onPreRemove( IoFilterChain parent, String name, NextFilter nextFilter ) throws Exception
    {
    }
    
    public void onPostRemove( IoFilterChain parent, String name, NextFilter nextFilter ) throws Exception
    {
    }
    
    public void sessionCreated( NextFilter nextFilter, IoSession session ) throws Exception
    {
        nextFilter.sessionCreated( session );
    }

    public void sessionOpened( NextFilter nextFilter, IoSession session ) throws Exception
    {
        nextFilter.sessionOpened( session );
    }

    public void sessionClosed( NextFilter nextFilter, IoSession session ) throws Exception
    {
        nextFilter.sessionClosed( session );
    }

    public void sessionIdle( NextFilter nextFilter, IoSession session, IdleStatus status ) throws Exception
    {
        nextFilter.sessionIdle( session, status );
    }

    public void exceptionCaught( NextFilter nextFilter, IoSession session, Throwable cause ) throws Exception
    {
        nextFilter.exceptionCaught( session, cause );
    }

    public void messageReceived( NextFilter nextFilter, IoSession session, Object message ) throws Exception
    {
        nextFilter.messageReceived( session, message );
    }

    public void messageSent( NextFilter nextFilter, IoSession session, Object message ) throws Exception
    {
        nextFilter.messageSent( session, message );
    }

    public void filterWrite( NextFilter nextFilter, IoSession session, WriteRequest writeRequest ) throws Exception
    {
        nextFilter.filterWrite( session, writeRequest );
    }

    public void filterClose( NextFilter nextFilter, IoSession session ) throws Exception
    {
        nextFilter.filterClose( session );
    }
}