/*
 * This software is distributed under following license based on modified BSD
 * style license.
 * ----------------------------------------------------------------------
 * 
 * Copyright 2009 The Nimbus2 Project. All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer. 
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE NIMBUS PROJECT ``AS IS'' AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
 * NO EVENT SHALL THE NIMBUS PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * The views and conclusions contained in the software and documentation are
 * those of the authors and should not be interpreted as representing official
 * policies, either expressed or implied, of the Nimbus2 Project.
 */
package jp.ossc.nimbus.service.aop.interceptor.servlet;

import java.util.*;
import javax.servlet.*;

import jp.ossc.nimbus.service.aop.*;

/**
 * レスポンス設定インターセプタ。<p>
 *
 * @author M.Takata
 */
public class ServletResponseSetInterceptorService
 extends ServletFilterInterceptorService
 implements ServletResponseSetInterceptorServiceMBean{
    
    private static final long serialVersionUID = 8599129621419714729L;
    
    protected int bufferSize = -1;
    protected String characterEncoding;
    protected String contentType;
    protected Locale locale;
    
    public void setBufferSize(int size){
        bufferSize = size;
    }
    public int getBufferSize(){
        return bufferSize;
    }
    
    public void setCharacterEncoding(String charset){
        characterEncoding = charset;
    }
    public String getCharacterEncoding(){
        return characterEncoding;
    }
    
    public void setContentType(String type){
        contentType = type;
    }
    public String getContentType(){
        return contentType;
    }
    
    public void setLocale(Locale loc){
        locale = loc;
    }
    public Locale getLocale(){
        return locale;
    }
    
    /**
     * レスポンスに設定して、次のインターセプタを呼び出す。<p>
     * サービスが開始されていない場合は、何もせずに次のインターセプタを呼び出す。<br>
     *
     * @param context 呼び出しのコンテキスト情報
     * @param chain 次のインターセプタを呼び出すためのチェーン
     * @return 呼び出し結果の戻り値
     * @exception Throwable 呼び出し先で例外が発生した場合、またはこのインターセプタで任意の例外が発生した場合。但し、本来呼び出される処理がthrowしないRuntimeException以外の例外をthrowしても、呼び出し元には伝播されない。
     */
    public Object invokeFilter(
        ServletFilterInvocationContext context,
        InterceptorChain chain
    ) throws Throwable{
        if(getState() == State.STARTED){
            
            final ServletResponse response = context.getServletResponse();
            if(bufferSize != -1){
                response.setBufferSize(bufferSize);
            }
            if(characterEncoding != null){
                response.setCharacterEncoding(characterEncoding);
            }
            if(contentType != null){
                response.setContentType(contentType);
            }
            if(locale != null){
                response.setLocale(locale);
            }
        }
        return chain.invokeNext(context);
    }
}
