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Tiles JSP support: Classes and tag libraries to use Tiles in a JSP environment.

There is a newer version: 3.0.8

/*
 * $Id: JspWriterResponse.java 527536 2007-04-11 15:44:51Z apetrelli $
 *
 * 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.tiles.jsp.context;

import javax.servlet.http.HttpServletResponseWrapper;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.PageContext;
import java.io.PrintWriter;
import java.io.IOException;


/**
 * It works as an {@link HttpServletResponse} by wrapping a
 * {@link javax.servlet.jsp.JspWriter} around a {@link PrintWriter}.
 *
 * @version $Rev: 527536 $ $Date: 2007-04-11 17:44:51 +0200 (mer, 11 apr 2007) $
 */
public class JspWriterResponse extends HttpServletResponseWrapper {

    /**
     * The page context to use.
     */
    private PageContext context;

    /**
     * The created print writer.
     */
    private PrintWriter writer;

    /**
     * Constructor.
     *
     * @param pageContext The page context to use.
     */
    public JspWriterResponse(PageContext pageContext) {
        super((HttpServletResponse) pageContext.getResponse());
        this.context = pageContext;
    }


    /** {@inheritDoc} */
    public PrintWriter getWriter() throws IOException {
        if (writer == null) {
            writer = new PrintWriter(context.getOut());
        }
        return writer;
    }
}