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* Copyright 2004 The Apache Software Foundation
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package javax.servlet.http;
import java.io.IOException;
import java.util.Collection;
import javax.servlet.ServletResponseWrapper;
/**
*
* Provides a convenient implementation of the HttpServletResponse interface that
* can be subclassed by developers wishing to adapt the response from a Servlet.
* This class implements the Wrapper or Decorator pattern. Methods default to
* calling through to the wrapped response object.
*
* @author Various
* @since Servlet 2.3
*
* @see javax.servlet.http.HttpServletResponse
*/
public class HttpServletResponseWrapper extends ServletResponseWrapper implements HttpServletResponse {
/**
* Constructs a response adaptor wrapping the given response.
* @throws java.lang.IllegalArgumentException if the response is null
*/
public HttpServletResponseWrapper(HttpServletResponse response) {
super(response);
}
private HttpServletResponse _getHttpServletResponse() {
return (HttpServletResponse) super.getResponse();
}
/**
* The default behavior of this method is to call addCookie(Cookie cookie)
* on the wrapped response object.
*/
public void addCookie(Cookie cookie) {
this._getHttpServletResponse().addCookie(cookie);
}
/**
* The default behavior of this method is to call containsHeader(String name)
* on the wrapped response object.
*/
public boolean containsHeader(String name) {
return this._getHttpServletResponse().containsHeader(name);
}
/**
* The default behavior of this method is to call encodeURL(String url)
* on the wrapped response object.
*/
public String encodeURL(String url) {
return this._getHttpServletResponse().encodeURL(url);
}
/**
* The default behavior of this method is to return encodeRedirectURL(String url)
* on the wrapped response object.
*/
public String encodeRedirectURL(String url) {
return this._getHttpServletResponse().encodeRedirectURL(url);
}
/**
* The default behavior of this method is to call encodeUrl(String url)
* on the wrapped response object.
*
* @deprecated As of version 2.1, use {@link #encodeURL(String url)}
* instead
*/
public String encodeUrl(String url) {
return this._getHttpServletResponse().encodeUrl(url);
}
/**
* The default behavior of this method is to return
* encodeRedirectUrl(String url) on the wrapped response object.
*
* @deprecated As of version 2.1, use
* {@link #encodeRedirectURL(String url)} instead
*/
public String encodeRedirectUrl(String url) {
return this._getHttpServletResponse().encodeRedirectUrl(url);
}
/**
* The default behavior of this method is to call sendError(int sc, String msg)
* on the wrapped response object.
*/
public void sendError(int sc, String msg) throws IOException {
this._getHttpServletResponse().sendError(sc, msg);
}
/**
* The default behavior of this method is to call sendError(int sc)
* on the wrapped response object.
*/
public void sendError(int sc) throws IOException {
this._getHttpServletResponse().sendError(sc);
}
/**
* The default behavior of this method is to return sendRedirect(String location)
* on the wrapped response object.
*/
public void sendRedirect(String location) throws IOException {
this._getHttpServletResponse().sendRedirect(location);
}
/**
* The default behavior of this method is to call setDateHeader(String name, long date)
* on the wrapped response object.
*/
public void setDateHeader(String name, long date) {
this._getHttpServletResponse().setDateHeader(name, date);
}
/**
* The default behavior of this method is to call addDateHeader(String name, long date)
* on the wrapped response object.
*/
public void addDateHeader(String name, long date) {
this._getHttpServletResponse().addDateHeader(name, date);
}
/**
* The default behavior of this method is to return setHeader(String name, String value)
* on the wrapped response object.
*/
public void setHeader(String name, String value) {
this._getHttpServletResponse().setHeader(name, value);
}
/**
* The default behavior of this method is to return addHeader(String name, String value)
* on the wrapped response object.
*/
public void addHeader(String name, String value) {
this._getHttpServletResponse().addHeader(name, value);
}
/**
* The default behavior of this method is to call setIntHeader(String name, int value)
* on the wrapped response object.
*/
public void setIntHeader(String name, int value) {
this._getHttpServletResponse().setIntHeader(name, value);
}
/**
* The default behavior of this method is to call addIntHeader(String name, int value)
* on the wrapped response object.
*/
public void addIntHeader(String name, int value) {
this._getHttpServletResponse().addIntHeader(name, value);
}
/**
* The default behavior of this method is to call setStatus(int sc)
* on the wrapped response object.
*/
public void setStatus(int sc) {
this._getHttpServletResponse().setStatus(sc);
}
/**
* The default behavior of this method is to call
* setStatus(int sc, String sm) on the wrapped response object.
*
* @deprecated As of version 2.1, due to ambiguous meaning of the
* message parameter. To set a status code
* use {@link #setStatus(int)}, to send an error with a description
* use {@link #sendError(int, String)}
*/
public void setStatus(int sc, String sm) {
this._getHttpServletResponse().setStatus(sc, sm);
}
/**
* The default behaviour of this method is to call
* {@link HttpServletResponse#getStatus} on the wrapped response
* object.
*
* @return the current status code of the wrapped response
*/
public int getStatus() {
return _getHttpServletResponse().getStatus();
}
/**
* The default behaviour of this method is to call
* {@link HttpServletResponse#getHeader} on the wrapped response
* object.
*
* @param name the name of the response header whose value to return
*
* @return the value of the response header with the given name,
* or <tt>null</tt> if no header with the given name has been set
* on the wrapped response
*
* @since Servlet 3.0
*/
public String getHeader(String name) {
return _getHttpServletResponse().getHeader(name);
}
/**
* The default behaviour of this method is to call
* {@link HttpServletResponse#getHeaders} on the wrapped response
* object.
*
* <p>Any changes to the returned <code>Collection</code> must not
* affect this <code>HttpServletResponseWrapper</code>.
*
* @param name the name of the response header whose values to return
*
* @return a (possibly empty) <code>Collection</code> of the values
* of the response header with the given name
*
* @since Servlet 3.0
*/
public Collection<String> getHeaders(String name) {
return _getHttpServletResponse().getHeaders(name);
}
/**
* The default behaviour of this method is to call
* {@link HttpServletResponse#getHeaderNames} on the wrapped response
* object.
*
* <p>Any changes to the returned <code>Collection</code> must not
* affect this <code>HttpServletResponseWrapper</code>.
*
* @return a (possibly empty) <code>Collection</code> of the names
* of the response headers
*
* @since Servlet 3.0
*/
public Collection<String> getHeaderNames() {
return _getHttpServletResponse().getHeaderNames();
}
}