/*
* 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.io.IOException;
import java.util.Locale;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletResponseWrapper;
import org.apache.catalina.util.StringManager;
/**
* Wrapper around a <code>javax.servlet.http.HttpServletResponse</code>
* 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.http.HttpServletResponseWrapper</code> class)
* back into an internal <code>org.apache.catalina.HttpResponse</code>.
* <p>
* <strong>WARNING</strong>: Due to Java's lack of support for multiple
* inheritance, all of the logic in <code>ApplicationResponse</code> is
* duplicated in <code>ApplicationHttpResponse</code>. Make sure that you
* keep these two classes in synchronization when making changes!
*
* @author Craig R. McClanahan
*
*/
class ApplicationHttpResponse extends HttpServletResponseWrapper {
// ----------------------------------------------------------- Constructors
/**
* Construct a new wrapped response around the specified servlet response.
*
* @param response The servlet response being wrapped
*/
public ApplicationHttpResponse(HttpServletResponse 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</code> if this response is being processed
* by a <code>RequestDispatcher.include()</code> call
*/
public ApplicationHttpResponse(HttpServletResponse response,
boolean included) {
super(response);
setIncluded(included);
}
// ----------------------------------------------------- Instance Variables
/**
* Is this wrapped response the subject of an <code>include()</code>
* call?
*/
protected boolean included = false;
/**
* Descriptive information about this implementation.
*/
protected static final String info =
"org.apache.catalina.core.ApplicationHttpResponse/1.0";
/**
* The string manager for this package.
*/
protected static StringManager sm =
StringManager.getManager(Constants.Package);
// ------------------------------------------------ ServletResponse Methods
/**
* Disallow <code>reset()</code> 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()</code> calls on an included response.
*
* @param len The new content length
*/
public void setContentLength(int len) {
if (!included)
getResponse().setContentLength(len);
}
/**
* Disallow <code>setContentType()</code> calls on an included response.
*
* @param type The new content type
*/
public void setContentType(String type) {
if (!included)
getResponse().setContentType(type);
}
/**
* Disallow <code>setLocale()</code> calls on an included response.
*
* @param loc The new locale
*/
public void setLocale(Locale loc) {
if (!included)
getResponse().setLocale(loc);
}
/**
* Ignore <code>setBufferSize()</code> calls on an included response.
*
* @param size The buffer size
*/
public void setBufferSize(int size) {
if (!included)
getResponse().setBufferSize(size);
}
// -------------------------------------------- HttpServletResponse Methods
/**
* Disallow <code>addCookie()</code> calls on an included response.
*
* @param cookie The new cookie
*/
public void addCookie(Cookie cookie) {
if (!included)
((HttpServletResponse) getResponse()).addCookie(cookie);
}
/**
* Disallow <code>addDateHeader()</code> calls on an included response.
*
* @param name The new header name
* @param value The new header value
*/
public void addDateHeader(String name, long value) {
if (!included)
((HttpServletResponse) getResponse()).addDateHeader(name, value);
}
/**
* Disallow <code>addHeader()</code> calls on an included response.
*
* @param name The new header name
* @param value The new header value
*/
public void addHeader(String name, String value) {
if (!included)
((HttpServletResponse) getResponse()).addHeader(name, value);
}
/**
* Disallow <code>addIntHeader()</code> calls on an included response.
*
* @param name The new header name
* @param value The new header value
*/
public void addIntHeader(String name, int value) {
if (!included)
((HttpServletResponse) getResponse()).addIntHeader(name, value);
}
/**
* Disallow <code>sendError()</code> calls on an included response.
*
* @param sc The new status code
*
* @exception IOException if an input/output error occurs
*/
public void sendError(int sc) throws IOException {
if (!included)
((HttpServletResponse) getResponse()).sendError(sc);
}
/**
* Disallow <code>sendError()</code> calls on an included response.
*
* @param sc The new status code
* @param msg The new message
*
* @exception IOException if an input/output error occurs
*/
public void sendError(int sc, String msg) throws IOException {
if (!included)
((HttpServletResponse) getResponse()).sendError(sc, msg);
}
/**
* Disallow <code>sendRedirect()</code> calls on an included response.
*
* @param location The new location
*
* @exception IOException if an input/output error occurs
*/
public void sendRedirect(String location) throws IOException {
if (!included)
((HttpServletResponse) getResponse()).sendRedirect(location);
}
/**
* Disallow <code>setDateHeader()</code> calls on an included response.
*
* @param name The new header name
* @param value The new header value
*/
public void setDateHeader(String name, long value) {
if (!included)
((HttpServletResponse) getResponse()).setDateHeader(name, value);
}
/**
* Disallow <code>setHeader()</code> calls on an included response.
*
* @param name The new header name
* @param value The new header value
*/
public void setHeader(String name, String value) {
if (!included)
((HttpServletResponse) getResponse()).setHeader(name, value);
}
/**
* Disallow <code>setIntHeader()</code> calls on an included response.
*
* @param name The new header name
* @param value The new header value
*/
public void setIntHeader(String name, int value) {
if (!included)
((HttpServletResponse) getResponse()).setIntHeader(name, value);
}
/**
* Disallow <code>setStatus()</code> calls on an included response.
*
* @param sc The new status code
*/
public void setStatus(int sc) {
if (!included)
((HttpServletResponse) getResponse()).setStatus(sc);
}
/**
* Disallow <code>setStatus()</code> calls on an included response.
*
* @param sc The new status code
* @param msg The new message
*/
public void setStatus(int sc, String msg) {
if (!included)
((HttpServletResponse) getResponse()).setStatus(sc, msg);
}
// -------------------------------------------------------- Package Methods
/**
* Return descriptive information about this implementation.
*/
public String getInfo() {
return (info);
}
/**
* 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;
}
/**
* Set the response that we are wrapping.
*
* @param response The new wrapped response
*/
void setResponse(HttpServletResponse response) {
super.setResponse(response);
}
}