NullHttpServletResponse.java :  » Content-Management-System » TransferCM » com » methodhead » shim » Java Open Source

/* 
 * Copyright (C) 2006 Methodhead Software LLC.  All rights reserved.
 * 
 * This file is part of TransferCM.
 * 
 * TransferCM is free software; you can redistribute it and/or modify it under the
 * terms of the GNU General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option) any later
 * version.
 * 
 * TransferCM is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * TransferCM; if not, write to the Free Software Foundation, Inc., 51 Franklin St,
 * Fifth Floor, Boston, MA  02110-1301  USA
 */

package com.methodhead.shim;

import javax.servlet.http.HttpServletResponse;
import javax.servlet.ServletResponse;
import javax.servlet.ServletOutputStream;
import java.util.Locale;
import java.io.PrintWriter;
import javax.servlet.http.Cookie;

/**
 * A servlet response that discards any output.  All methods of this class are
 * empty implementations.
 */
public class NullHttpServletResponse
implements
  HttpServletResponse {

  // constructors /////////////////////////////////////////////////////////////

  public NullHttpServletResponse() {
    out_ = new NullServletOutputStream();
  }

  // constants ////////////////////////////////////////////////////////////////

  // classes //////////////////////////////////////////////////////////////////

  private static class NullServletOutputStream
  extends
    ServletOutputStream {

    public void write( int b ) {
      // do nothing
    }
  }

  // methods //////////////////////////////////////////////////////////////////

  public void flushBuffer() {
  }

  public int getBufferSize() {
    return 0;
  }

  public String getCharacterEncoding() {
    return "";
  }

  public Locale getLocale() {
    return Locale.getDefault();
  }

  public ServletOutputStream getOutputStream() {
    return out_;
  }

  public PrintWriter getWriter() {
    return new PrintWriter( out_ );
  }

  public boolean isCommitted() {
    return false;
  }

  public void reset() {
  }

  public void resetBuffer() {
  }

  public void setBufferSize( int size ) {
  }

  public void setContentLength( int len ) {
  }

  public void setContentType( String type ) {
  }

  public void setLocale( Locale loc ) {
  }

  public void setResponse( ServletResponse response ) {
  }

  public void addCookie( Cookie cookie ) {
  }

  public void addDateHeader( String name, long date ) {
  }

  public void addHeader( String name, String value ) {
  }

  public void addIntHeader( String name, int value ) {
  }

  public boolean containsHeader( String name ) {
    return false;
  }

  public String encodeRedirectUrl( String url ) {
    return url;
  }

  public String encodeRedirectURL( String url ) {
    return url;
  }

  public String encodeUrl( String url ) {
    return url;
  }

  public String encodeURL( String url ) {
    return url;
  }

  public void sendError( int sc ) {
  }

  public void sendError( int sc, String msg ) {
  }

  public void sendRedirect( String location ) {
  }

  public void setDateHeader( String name, long date ) {
  }

  public void setHeader( String name, String value ) {
  }

  public void setIntHeader( String name, int value ) {
  }

  public void setStatus( int sc ) {
  }

  public void setStatus( int sc, String sm ) {
  }

  // properties ///////////////////////////////////////////////////////////////

  ServletOutputStream out_ = null;

  // attributes ///////////////////////////////////////////////////////////////
}