/*
    *  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.core.filterchain;
  
  import org.apache.mina.core.session.IdleStatus;
  import org.apache.mina.core.session.IoSession;
  import org.apache.mina.core.write.WriteRequest;
  import org.apache.mina.filter.FilterEvent;
  
  /**
   * An 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 <a href="http://mina.apache.org">Apache MINA Project</a>
   */
  public class IoFilterAdapter implements IoFilter {
      /**
       * {@inheritDoc}
       */
      @Override
      public void init() throws Exception {
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public void destroy() throws Exception {
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public void onPreAdd(IoFilterChain parent, String name, NextFilter nextFilter) throws Exception {
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public void onPostAdd(IoFilterChain parent, String name, NextFilter nextFilter) throws Exception {
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public void onPreRemove(IoFilterChain parent, String name, NextFilter nextFilter) throws Exception {
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public void onPostRemove(IoFilterChain parent, String name, NextFilter nextFilter) throws Exception {
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public void sessionCreated(NextFilter nextFilter, IoSession session) throws Exception {
          nextFilter.sessionCreated(session);
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public void sessionOpened(NextFilter nextFilter, IoSession session) throws Exception {
          nextFilter.sessionOpened(session);
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public void sessionClosed(NextFilter nextFilter, IoSession session) throws Exception {
          nextFilter.sessionClosed(session);
      }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public void sessionIdle(NextFilter nextFilter, IoSession session, IdleStatus status) throws Exception {
         nextFilter.sessionIdle(session, status);
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public void exceptionCaught(NextFilter nextFilter, IoSession session, Throwable cause) throws Exception {
         nextFilter.exceptionCaught(session, cause);
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public void messageReceived(NextFilter nextFilter, IoSession session, Object message) throws Exception {
         nextFilter.messageReceived(session, message);
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public void messageSent(NextFilter nextFilter, IoSession session, WriteRequest writeRequest) throws Exception {
         nextFilter.messageSent(session, writeRequest);
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public void filterWrite(NextFilter nextFilter, IoSession session, WriteRequest writeRequest) throws Exception {
         nextFilter.filterWrite(session, writeRequest);
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public void filterClose(NextFilter nextFilter, IoSession session) throws Exception {
         nextFilter.filterClose(session);
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public void inputClosed(NextFilter nextFilter, IoSession session) throws Exception {
         nextFilter.inputClosed(session);
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public void event(NextFilter nextFilter, IoSession session, FilterEvent event) throws Exception {
         nextFilter.event(session, event);
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public String toString() {
         return this.getClass().getSimpleName();
     }
 }