Coverage Report - org.apache.turbine.util.HttpUtils
 
Classes in this File Line Coverage Branch Coverage Complexity
HttpUtils
0%
0/13
0%
0/2
1,5
 
 1  
 package org.apache.turbine.util;
 2  
 
 3  
 /*
 4  
  * Licensed to the Apache Software Foundation (ASF) under one
 5  
  * or more contributor license agreements.  See the NOTICE file
 6  
  * distributed with this work for additional information
 7  
  * regarding copyright ownership.  The ASF licenses this file
 8  
  * to you under the Apache License, Version 2.0 (the
 9  
  * "License"); you may not use this file except in compliance
 10  
  * with the License.  You may obtain a copy of the License at
 11  
  *
 12  
  *   http://www.apache.org/licenses/LICENSE-2.0
 13  
  *
 14  
  * Unless required by applicable law or agreed to in writing,
 15  
  * software distributed under the License is distributed on an
 16  
  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 17  
  * KIND, either express or implied.  See the License for the
 18  
  * specific language governing permissions and limitations
 19  
  * under the License.
 20  
  */
 21  
 
 22  
 import java.text.SimpleDateFormat;
 23  
 import java.util.Date;
 24  
 import java.util.Locale;
 25  
 import java.util.TimeZone;
 26  
 
 27  
 /**
 28  
  * This class provides utilities for handling some semi-trivial HTTP stuff that
 29  
  * would otherwise be handled elsewhere.
 30  
  *
 31  
  * @author <a href="mailto:magnus@handpoint.com">Magnús Þór Torfason</a>
 32  
  * @version $Id: HttpUtils.java 1071052 2011-02-15 20:54:47Z tv $
 33  
  */
 34  0
 public class HttpUtils
 35  
 {
 36  
     /**
 37  
      * The date format to use for HTTP Dates.
 38  
      */
 39  
     private static SimpleDateFormat httpDateFormat;
 40  
 
 41  
     static
 42  
     {
 43  0
         httpDateFormat = new SimpleDateFormat(
 44  
                 "EEE, dd MMM yyyy HH:mm:ss z", Locale.US);
 45  0
         httpDateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
 46  0
     }
 47  
 
 48  
     /**
 49  
      * Formats a java Date according to rfc 1123, the rfc standard for dates in
 50  
      * http.
 51  
      *
 52  
      * @param date The Date to format
 53  
      * @return A String representation of the date
 54  
      */
 55  
     public static String formatHttpDate(Date date)
 56  
     {
 57  0
         synchronized (httpDateFormat)
 58  
         {
 59  0
             return httpDateFormat.format(date);
 60  0
         }
 61  
     }
 62  
 
 63  
     /**
 64  
      * This method sets the required expiration headers in the response for a
 65  
      * given RunData object.  This method attempts to set all relevant headers,
 66  
      * both for HTTP 1.0 and HTTP 1.1.
 67  
      *
 68  
      * @param data The RunData object we are setting cache information for.
 69  
      * @param expiry The number of milliseconds until the document should expire,
 70  
      * <code>0</code> indicating immediate expiration (i.e. no caching).
 71  
      */
 72  
     public static void setCacheHeaders(RunData data, int expiry)
 73  
     {
 74  0
         if (0 == expiry)
 75  
         {
 76  0
             data.getResponse().setHeader("Pragma", "no-cache");
 77  0
             data.getResponse().setHeader("Cache-Control", "no-cache");
 78  0
             data.getResponse().setDateHeader("Expires", System.currentTimeMillis());
 79  
         }
 80  
         else
 81  
         {
 82  0
             data.getResponse().setDateHeader("Expires", System.currentTimeMillis() + expiry);
 83  
         }
 84  0
     }
 85  
 }