Coverage Report - net.sourceforge.pebble.service.DefaultLastModifiedService
 
Classes in this File Line Coverage Branch Coverage Complexity
DefaultLastModifiedService
100%
14/14
100%
10/10
8
 
 1  
 /*
 2  
  * Copyright (c) 2003-2011, Simon Brown
 3  
  * All rights reserved.
 4  
  *
 5  
  * Redistribution and use in source and binary forms, with or without
 6  
  * modification, are permitted provided that the following conditions are met:
 7  
  *
 8  
  *   - Redistributions of source code must retain the above copyright
 9  
  *     notice, this list of conditions and the following disclaimer.
 10  
  *
 11  
  *   - Redistributions in binary form must reproduce the above copyright
 12  
  *     notice, this list of conditions and the following disclaimer in
 13  
  *     the documentation and/or other materials provided with the
 14  
  *     distribution.
 15  
  *
 16  
  *   - Neither the name of Pebble nor the names of its contributors may
 17  
  *     be used to endorse or promote products derived from this software
 18  
  *     without specific prior written permission.
 19  
  *
 20  
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 21  
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 22  
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 23  
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 24  
  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 25  
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 26  
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 27  
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 28  
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 29  
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 30  
  * POSSIBILITY OF SUCH DAMAGE.
 31  
  */
 32  
 package net.sourceforge.pebble.service;
 33  
 
 34  
 import javax.servlet.http.HttpServletRequest;
 35  
 import javax.servlet.http.HttpServletResponse;
 36  
 import java.text.SimpleDateFormat;
 37  
 import java.util.Date;
 38  
 import java.util.TimeZone;
 39  
 
 40  
 /**
 41  
  * Default implementation of the last modified service
 42  
  *
 43  
  * @author James Roper
 44  
  */
 45  24
 public class DefaultLastModifiedService implements LastModifiedService {
 46  
 
 47  
   public boolean checkAndProcessLastModified(HttpServletRequest request, HttpServletResponse response,
 48  
                                              Date lastModified, Date expires) {
 49  
 
 50  24
     SimpleDateFormat httpFormat = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss z");
 51  24
     httpFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
 52  
 
 53  
     // Set the headers
 54  24
     response.setDateHeader("Last-Modified", lastModified.getTime());
 55  24
     response.setHeader("ETag", "\"" + httpFormat.format(lastModified) + "\"");
 56  24
     if (expires != null) {
 57  4
       response.setHeader("Expires", httpFormat.format(expires));
 58  
     }
 59  
 
 60  
     // Get the headers to check
 61  24
     String ifModifiedSince = request.getHeader("If-Modified-Since");
 62  24
     String ifNoneMatch = request.getHeader("If-None-Match");
 63  
 
 64  24
     if (ifModifiedSince != null && ifModifiedSince.equals(httpFormat.format(lastModified))) {
 65  4
       return true;
 66  20
     } else if (ifNoneMatch != null && ifNoneMatch.equals("\"" + httpFormat.format(lastModified) + "\"")) {
 67  4
       return true;
 68  
     } else {
 69  16
       return false;
 70  
     }
 71  
   }
 72  
 }