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Posted to dev@velocity.apache.org by nb...@apache.org on 2003/07/22 23:05:34 UTC

cvs commit: jakarta-velocity-tools/src/java/org/apache/velocity/tools/view/tools CookieTool.java

nbubna      2003/07/22 14:05:34

  Added:       src/java/org/apache/velocity/tools/view/tools
                        CookieTool.java
  Log:
  Initial revision (based on contribution from Dmitri Colebatch)
  
  Revision  Changes    Path
  1.1                  jakarta-velocity-tools/src/java/org/apache/velocity/tools/view/tools/CookieTool.java
  
  Index: CookieTool.java
  ===================================================================
  /*
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2003 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution, if
   *    any, must include the following acknowlegement:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowlegement may appear in the software itself,
   *    if and wherever such third-party acknowlegements normally appear.
   *
   * 4. The names "The Jakarta Project", "Velocity", and "Apache Software
   *    Foundation" must not be used to endorse or promote products derived
   *    from this software without prior written permission. For written
   *    permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Group.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   */
  
  package org.apache.velocity.tools.view.tools;
  
  import javax.servlet.ServletContext;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import javax.servlet.http.Cookie;
  import org.apache.velocity.tools.view.context.ViewContext;
  
  /**
   * <p>View tool for convenient cookie access and creation.</p>
   *
   * <p>This class is only designed for use as a request-scope tool.</p>
   *
   * @author <a href="mailto:dim@colebatch.com">Dmitri Colebatch</a>
   * @author <a href="mailto:nathan@esha.com">Nathan Bubna</a>
   *
   * @version $Id: CookieTool.java,v 1.1 2003/07/22 21:05:34 nbubna Exp $
   */
  public class CookieTool implements ViewTool
  {
  
      protected HttpServletRequest request;
      protected HttpServletResponse response;
  
  
      /**
       * Initializes this instance for the current request.
       *
       * @param obj the ViewContext of the current request
       */
      public void init(Object obj)
      {
          ViewContext context = (ViewContext)obj;
          this.request = context.getRequest();
          this.response = context.getResponse();
      }
  
  
      /**
       * Expose array of Cookies for this request to the template.
       *
       * <p>This is equivalent to <code>$request.cookies</code>.</p>
       *
       * @return array of Cookie objects for this request
       */
      public Cookie[] getAll()
      {
          return request.getCookies();
      }
  
  
      /**
       * Returns the Cookie with the specified name, if it exists.
       *
       * <p>So, if you had a cookie named 'foo', you'd get it's value
       * by <code>$cookies.foo.value</code> or it's max age 
       * by <code>$cookies.foo.maxAge</code></p>
       */
      public Cookie get(String name)
      {
          Cookie[] all = getAll();
          if (all == null)
          {
              return null;
          }
  
          for (int i = 0; i < all.length; i++)
          {
              Cookie cookie = all[i];
              if (cookie.getName().equals(name))
              {
                  return cookie;
              }
          }
          return null;
      }
  
  
      /**
       * Adds a new Cookie with the specified name and value
       * to the HttpServletResponse.  This does *not* add a Cookie
       * to the current request.
       *
       * @param name the name to give this cookie
       * @param value the value to be set for this cookie
       */
      public void add(String name, String value)
      {
          response.addCookie(new Cookie(name, value));
      }
  
  
      /**
       * Convenience method to add a new Cookie to the response
       * and set an expiry time for it.
       *
       * @param name the name to give this cookie
       * @param value the value to be set for this cookie
       * @param maxAge the expiry to be set for this cookie
       */
      public void add(String name, String value, int maxAge)
      {
          /* c is for cookie.  that's good enough for me. */
          Cookie c = new Cookie(name, value);
          c.setMaxAge(maxAge);
          response.addCookie(c);
      }
  
  }
  
  
  

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