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Tomcat example source code file (ApplicationResponse.java)

This example Tomcat source code file (ApplicationResponse.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Tomcat tags/keywords

applicationresponse, applicationresponse, servlet, servletresponsewrapper, servletresponsewrapper, stringmanager, stringmanager, util

The Tomcat ApplicationResponse.java source code

/*
 * 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.catalina.core;


import java.util.Locale;

import javax.servlet.ServletResponse;
import javax.servlet.ServletResponseWrapper;

import org.apache.catalina.util.StringManager;


/**
 * Wrapper around a <code>javax.servlet.ServletResponse
 * that transforms an application response object (which might be the original
 * one passed to a servlet, or might be based on the 2.3
 * <code>javax.servlet.ServletResponseWrapper class)
 * back into an internal <code>org.apache.catalina.Response.
 * <p>
 * <strong>WARNING:  Due to Java's lack of support for multiple
 * inheritance, all of the logic in <code>ApplicationResponse is
 * duplicated in <code>ApplicationHttpResponse.  Make sure that you
 * keep these two classes in synchronization when making changes!
 *
 * @author Craig R. McClanahan
 * @version $Revision: 467222 $ $Date: 2006-10-24 05:17:11 +0200 (mar., 24 oct. 2006) $
 */

class ApplicationResponse extends ServletResponseWrapper {


    // ----------------------------------------------------------- Constructors


    /**
     * Construct a new wrapped response around the specified servlet response.
     *
     * @param response The servlet response being wrapped
     */
    public ApplicationResponse(ServletResponse response) {

        this(response, false);

    }


    /**
     * Construct a new wrapped response around the specified servlet response.
     *
     * @param response The servlet response being wrapped
     * @param included <code>true if this response is being processed
     *  by a <code>RequestDispatcher.include() call
     */
    public ApplicationResponse(ServletResponse response, boolean included) {

        super(response);
        setIncluded(included);

    }


    // ----------------------------------------------------- Instance Variables


    /**
     * Is this wrapped response the subject of an <code>include()
     * call?
     */
    protected boolean included = false;


    /**
     * The string manager for this package.
     */
    protected static StringManager sm =
        StringManager.getManager(Constants.Package);


    // ------------------------------------------------ ServletResponse Methods


    /**
     * Disallow <code>reset() calls on a included response.
     *
     * @exception IllegalStateException if the response has already
     *  been committed
     */
    public void reset() {

        // If already committed, the wrapped response will throw ISE
        if (!included || getResponse().isCommitted())
            getResponse().reset();

    }


    /**
     * Disallow <code>setContentLength() calls on an included response.
     *
     * @param len The new content length
     */
    public void setContentLength(int len) {

        if (!included)
            getResponse().setContentLength(len);

    }


    /**
     * Disallow <code>setContentType() calls on an included response.
     *
     * @param type The new content type
     */
    public void setContentType(String type) {

        if (!included)
            getResponse().setContentType(type);

    }


    /**
     * Ignore <code>setLocale() calls on an included response.
     *
     * @param loc The new locale
     */
    public void setLocale(Locale loc) {
        if (!included)
            getResponse().setLocale(loc);
    }


    /**
     * Ignore <code>setBufferSize() calls on an included response.
     *
     * @param size The buffer size
     */
    public void setBufferSize(int size) {
        if (!included)
            getResponse().setBufferSize(size);
    }


    // ----------------------------------------- ServletResponseWrapper Methods


    /**
     * Set the response that we are wrapping.
     *
     * @param response The new wrapped response
     */
    public void setResponse(ServletResponse response) {

        super.setResponse(response);

    }


    // -------------------------------------------------------- Package Methods


    /**
     * Return the included flag for this response.
     */
    boolean isIncluded() {

        return (this.included);

    }


    /**
     * Set the included flag for this response.
     *
     * @param included The new included flag
     */
    void setIncluded(boolean included) {

        this.included = included;

    }


}

Other Tomcat examples (source code examples)

Here is a short list of links related to this Tomcat ApplicationResponse.java source code file:

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