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Java > Open Source Codes > org > tigris > scarab > om > AttributeGroupManager


1 package org.tigris.scarab.om;
2
3 /* ================================================================
4  * Copyright (c) 2000-2003 CollabNet. All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions are
8  * met:
9  *
10  * 1. Redistributions of source code must retain the above copyright
11  * notice, this list of conditions and the following disclaimer.
12  *
13  * 2. Redistributions in binary form must reproduce the above copyright
14  * notice, this list of conditions and the following disclaimer in the
15  * documentation and/or other materials provided with the distribution.
16  *
17  * 3. The end-user documentation included with the redistribution, if
18  * any, must include the following acknowlegement: "This product includes
19  * software developed by CollabNet <http://www.Collab.Net/>."
20  * Alternately, this acknowlegement may appear in the software itself, if
21  * and wherever such third-party acknowlegements normally appear.
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23  * 4. The hosted project names must not be used to endorse or promote
24  * products derived from this software without prior written
25  * permission. For written permission, please contact info@collab.net.
26  *
27  * 5. Products derived from this software may not use the "Tigris" or
28  * "Scarab" names nor may "Tigris" or "Scarab" appear in their names without
29  * prior written permission of CollabNet.
30  *
31  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
32  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
33  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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38  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
39  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
40  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
41  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42  *
43  * ====================================================================
44  *
45  * This software consists of voluntary contributions made by many
46  * individuals on behalf of CollabNet.
47  */
48
49 import java.util.List JavaDoc;
50 import java.util.LinkedList JavaDoc;
51 import java.util.HashMap JavaDoc;
52 import java.io.Serializable JavaDoc;
53
54 import org.apache.torque.TorqueException;
55 import org.apache.torque.om.Persistent;
56 import org.apache.torque.manager.CacheListener;
57
58 import org.tigris.scarab.util.Log;
59
60 /**
61  * This class manages AttributeGroup objects.
62  *
63  * @author <a HREF="mailto:jmcnally@collab.net">John McNally</a>
64  * @version $Id: AttributeGroupManager.java 7496 2003-03-27 23:57:19Z jon $
65  */
66 public class AttributeGroupManager
67     extends BaseAttributeGroupManager
68     implements CacheListener
69 {
70     /**
71      * Creates a new <code>AttributeGroupManager</code> instance.
72      *
73      * @exception TorqueException if an error occurs
74      */
75     public AttributeGroupManager()
76         throws TorqueException
77     {
78         super();
79         setRegion(getClassName().replace('.', '_'));
80         validFields = new HashMap JavaDoc();
81         validFields.put(AttributeGroupPeer.MODULE_ID, null);
82     }
83
84     protected Persistent putInstanceImpl(Persistent om)
85         throws TorqueException
86     {
87         Persistent oldOm = super.putInstanceImpl(om);
88         List JavaDoc listeners = (List JavaDoc)listenersMap.get(AttributeGroupPeer.MODULE_ID);
89         notifyListeners(listeners, oldOm, om);
90         return oldOm;
91     }
92
93     protected AttributeGroup getInstanceImpl()
94     {
95         return new AttributeGroup();
96     }
97
98     /**
99      * Notify other managers with relevant CacheEvents.
100      */
101     protected void registerAsListener()
102     {
103         RAttributeAttributeGroupManager.addCacheListener(this);
104         AttributeManager.addCacheListener(this);
105     }
106
107     // -------------------------------------------------------------------
108 // CacheListener implementation
109
110     public void addedObject(Persistent om)
111     {
112         if (om instanceof RAttributeAttributeGroup)
113         {
114             RAttributeAttributeGroup castom = (RAttributeAttributeGroup)om;
115             Integer JavaDoc key = castom.getGroupId();
116             try
117             {
118                 Serializable JavaDoc obj = getInstance(key);
119                 if (obj != null)
120                 {
121                     getMethodResult().remove(obj, AttributeGroup.GET_ATTRIBUTES);
122                 }
123             }
124             catch(TorqueException e)
125             {
126                 Log.get().warn("Invalid AttributeGroup id ", e);
127             }
128         }
129         else if (om instanceof Attribute)
130         {
131             getMethodResult().clear();
132         }
133     }
134
135     public void refreshedObject(Persistent om)
136     {
137         addedObject(om);
138     }
139
140     /** fields which interest us with respect to cache events */
141     public List JavaDoc getInterestedFields()
142     {
143         List JavaDoc interestedCacheFields = new LinkedList JavaDoc();
144         interestedCacheFields.add(RAttributeAttributeGroupPeer.GROUP_ID);
145         interestedCacheFields.add(AttributePeer.ATTRIBUTE_ID);
146         interestedCacheFields.add(AttributeGroupPeer.ATTRIBUTE_GROUP_ID);
147         return interestedCacheFields;
148     }
149 }
150
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