Clover coverage report - Code Coverage for tapestry release 4.0-alpha-3
Coverage timestamp: Mon May 16 2005 09:05:49 EDT
file stats: LOC: 145   Methods: 8
NCLOC: 79   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
ClientPropertyPersistenceStrategy.java 90% 100% 100% 98%
coverage coverage
 1   
 // Copyright 2005 The Apache Software Foundation
 2   
 //
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 // Licensed under the Apache License, Version 2.0 (the "License");
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 // you may not use this file except in compliance with the License.
 5   
 // You may obtain a copy of the License at
 6   
 //
 7   
 //     http://www.apache.org/licenses/LICENSE-2.0
 8   
 //
 9   
 // Unless required by applicable law or agreed to in writing, software
 10   
 // distributed under the License is distributed on an "AS IS" BASIS,
 11   
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 12   
 // See the License for the specific language governing permissions and
 13   
 // limitations under the License.
 14   
 
 15   
 package org.apache.tapestry.record;
 16   
 
 17   
 import java.util.Collection;
 18   
 import java.util.Collections;
 19   
 import java.util.HashMap;
 20   
 import java.util.Iterator;
 21   
 import java.util.List;
 22   
 import java.util.Map;
 23   
 
 24   
 import org.apache.hivemind.util.Defense;
 25   
 import org.apache.tapestry.IRequestCycle;
 26   
 import org.apache.tapestry.engine.ServiceEncoding;
 27   
 import org.apache.tapestry.web.WebRequest;
 28   
 
 29   
 /**
 30   
  * Service tapestry.persist.ClientPropertyPersistenceStrategy. Encodes persistent page properties on
 31   
  * the client as query parameters.
 32   
  * <p>
 33   
  * Uses the threaded model.
 34   
  * 
 35   
  * @author Howard M. Lewis Ship
 36   
  * @since 4.0
 37   
  * @see org.apache.tapestry.engine.ILink
 38   
  */
 39   
 public class ClientPropertyPersistenceStrategy implements PropertyPersistenceStrategy
 40   
 {
 41   
     /**
 42   
      * Query parameters consist of this prefix followed by the page name. Each page gets its own
 43   
      * query parameter.
 44   
      */
 45   
     public static final String PREFIX = "state:";
 46   
 
 47   
     /**
 48   
      * Keyed on page name (String), values are
 49   
      * {@link org.apache.tapestry.record.PersistentPropertyData}.
 50   
      */
 51   
     private final Map _data = new HashMap();
 52   
 
 53   
     private final PersistentPropertyDataEncoder _encoder;
 54   
 
 55   
     private WebRequest _request;
 56   
 
 57  150
     public ClientPropertyPersistenceStrategy()
 58   
     {
 59  150
         this(new PersistentPropertyDataEncoderImpl());
 60   
     }
 61   
 
 62   
     // Alternate constructor used for testing
 63  151
     ClientPropertyPersistenceStrategy(PersistentPropertyDataEncoder encoder)
 64   
     {
 65  151
         _encoder = encoder;
 66   
     }
 67   
 
 68   
     /**
 69   
      * Initializer for this service, invoked every time a service instance is created. This
 70   
      * initializer pulls out of the request and query parameters whose prefix is "client:" and
 71   
      * expects them to be encoded {@link PersistentPropertyData}, which are stored internally.
 72   
      * Because the service model is threaded, this information is specific to a single request, and
 73   
      * will be discarded at the end of the request.
 74   
      */
 75   
 
 76  149
     public void initializeService()
 77   
     {
 78  149
         List names = _request.getParameterNames();
 79  149
         Iterator i = names.iterator();
 80  149
         while (i.hasNext())
 81   
         {
 82  453
             String name = (String) i.next();
 83   
 
 84  453
             if (!name.startsWith(PREFIX))
 85  451
                 continue;
 86   
 
 87  2
             String pageName = name.substring(PREFIX.length());
 88  2
             String encoded = _request.getParameterValue(name);
 89   
 
 90  2
             PersistentPropertyData data = new PersistentPropertyData(_encoder);
 91  2
             data.storeEncoded(encoded);
 92   
 
 93  2
             _data.put(pageName, data);
 94   
         }
 95   
     }
 96   
 
 97  1
     public void store(String pageName, String idPath, String propertyName, Object newValue)
 98   
     {
 99  1
         PersistentPropertyData data = (PersistentPropertyData) _data.get(pageName);
 100  1
         if (data == null)
 101   
         {
 102  1
             data = new PersistentPropertyData(_encoder);
 103  1
             _data.put(pageName, data);
 104   
         }
 105   
 
 106  1
         data.store(idPath, propertyName, newValue);
 107   
     }
 108   
 
 109  216
     public Collection getStoredChanges(String pageName, IRequestCycle cycle)
 110   
     {
 111  216
         PersistentPropertyData data = (PersistentPropertyData) _data.get(pageName);
 112   
 
 113  216
         if (data == null)
 114  214
             return Collections.EMPTY_LIST;
 115   
 
 116  2
         return data.getPageChanges();
 117   
     }
 118   
 
 119  1
     public void discardStoredChanges(String pageName, IRequestCycle cycle)
 120   
     {
 121  1
         _data.remove(pageName);
 122   
     }
 123   
 
 124  161
     public void addParametersForPersistentProperties(ServiceEncoding encoding, IRequestCycle cycle)
 125   
     {
 126  161
         Defense.notNull(encoding, "encoding");
 127  161
         Defense.notNull(cycle, "cycle");
 128   
 
 129  161
         Iterator i = _data.entrySet().iterator();
 130  161
         while (i.hasNext())
 131   
         {
 132  1
             Map.Entry e = (Map.Entry) i.next();
 133   
 
 134  1
             String pageName = (String) e.getKey();
 135  1
             PersistentPropertyData data = (PersistentPropertyData) e.getValue();
 136   
 
 137  1
             encoding.setParameterValue(PREFIX + pageName, data.getEncoded());
 138   
         }
 139   
     }
 140   
 
 141  149
     public void setRequest(WebRequest request)
 142   
     {
 143  149
         _request = request;
 144   
     }
 145   
 }