Clover coverage report - Code Coverage for tapestry release 4.0-beta-1
Coverage timestamp: Fri Jun 24 2005 14:32:46 EDT
file stats: LOC: 145   Methods: 8
NCLOC: 79   Classes: 1
 
 Source file Conditionals Statements Methods TOTAL
ClientPropertyPersistenceStrategy.java 90% 100% 100% 98%
coverage coverage
 1    // Copyright 2005 The Apache Software Foundation
 2    //
 3    // Licensed under the Apache License, Version 2.0 (the "License");
 4    // 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  133 public ClientPropertyPersistenceStrategy()
 58    {
 59  133 this(new PersistentPropertyDataEncoderImpl());
 60    }
 61   
 62    // Alternate constructor used for testing
 63  134 ClientPropertyPersistenceStrategy(PersistentPropertyDataEncoder encoder)
 64    {
 65  134 _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  132 public void initializeService()
 77    {
 78  132 List names = _request.getParameterNames();
 79  132 Iterator i = names.iterator();
 80  132 while (i.hasNext())
 81    {
 82  371 String name = (String) i.next();
 83   
 84  371 if (!name.startsWith(PREFIX))
 85  369 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  191 public Collection getStoredChanges(String pageName, IRequestCycle cycle)
 110    {
 111  191 PersistentPropertyData data = (PersistentPropertyData) _data.get(pageName);
 112   
 113  191 if (data == null)
 114  189 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  140 public void addParametersForPersistentProperties(ServiceEncoding encoding, IRequestCycle cycle)
 125    {
 126  140 Defense.notNull(encoding, "encoding");
 127  140 Defense.notNull(cycle, "cycle");
 128   
 129  140 Iterator i = _data.entrySet().iterator();
 130  140 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  132 public void setRequest(WebRequest request)
 142    {
 143  132 _request = request;
 144    }
 145    }