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


1 package org.tigris.scarab.om;
2
3 /* ================================================================
4  * Copyright (c) 2000-2002 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 Collab.Net <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 Collab.Net.
30  *
31  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
32  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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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 Collab.Net.
47  */
48
49 import java.util.Map JavaDoc;
50 import java.util.HashMap JavaDoc;
51
52 // Village
53 import com.workingdogs.village.Record;
54 import com.workingdogs.village.DataSetException;
55
56 // Turbine classes
57 import org.apache.torque.TorqueException;
58 import org.apache.torque.util.Criteria;
59
60 /**
61  * The Peer class for an AttributeValue
62  *
63  * @author <a HREF="mailto:jmcnally@collab.net">John McNally</a>
64  * @author <a HREF="mailto:jon@collab.net">Jon S. Stevens</a>
65  * @author <a HREF="mailto:elicia@collab.net">Elicia David</a>
66  * @version $Id: AttributeValuePeer.java 9104 2004-05-10 21:04:51Z dabbous $
67  */
68 public class AttributeValuePeer
69     extends BaseAttributeValuePeer
70 {
71     private static Map JavaDoc classMap = new HashMap JavaDoc();
72
73     private static final String JavaDoc COUNT =
74         "count(" + VALUE_ID + ')';
75     private static final String JavaDoc COUNT_DISTINCT =
76         "count(DISTINCT " + VALUE_ID + ')';
77
78     /**
79      * Adds count(AttributeValuePeer.VALUE_ID) to the select clause and returns the
80      * number of rows resulting from the given Criteria. If the criteria will
81      * lead to duplicate VALUE_ID's they will be counted. However, if the
82      * criteria is known not to lead to this, or unique VALUE_ID's are not
83      * required, this method is cheaper than {@link #countDistinct(Criteria)}
84      *
85      * @param crit a <code>Criteria</code> value
86      * @return an <code>int</code> value
87      * @exception TorqueException if an error occurs
88      * @exception DataSetException if an error occurs
89      */
90     public static int count(Criteria crit)
91         throws TorqueException, DataSetException
92     {
93         crit.addSelectColumn(COUNT);
94         return ((Record)AttributeValuePeer.doSelectVillageRecords(crit).get(0))
95             .getValue(1).asInt();
96     }
97
98     /**
99      * Adds count(DISTINCT AttributeValuePeer.VALUE_ID) to the select clause and returns
100      * the number of rows resulting from the given Criteria. The returned
101      * value will be the number of unique VALUE_ID's.
102      *
103      * @param crit a <code>Criteria</code> value
104      * @return an <code>int</code> value
105      * @exception TorqueException if an error occurs
106      * @exception DataSetException if an error occurs
107      */
108     public static int countDistinct(Criteria crit)
109         throws TorqueException, DataSetException
110     {
111         crit.addSelectColumn(COUNT_DISTINCT);
112         return ((Record)AttributeValuePeer.doSelectVillageRecords(crit).get(0))
113             .getValue(1).asInt();
114     }
115
116
117     /**
118      * Get the className appropriate for a row in the
119      * SCARAB_ISSUE_ATTRIBUTE_VALUE table
120      */
121     public static Class JavaDoc getOMClass(Record record, int offset)
122         throws TorqueException
123     {
124         Class JavaDoc c = null;
125         try
126         {
127             Integer JavaDoc attId = new Integer JavaDoc(record.getValue(offset-1 + 3)
128                                             .asString());
129             Attribute attribute = AttributeManager.getInstance(attId);
130             String JavaDoc className = attribute.getAttributeType().getJavaClassName();
131
132             c = (Class JavaDoc)classMap.get(className);
133             if (c == null)
134             {
135                 c = Class.forName(className);
136                 classMap.put(className, c);
137             }
138         }
139         catch (Exception JavaDoc e)
140         {
141             throw new TorqueException(e); //EXCEPTION
142 }
143         
144         return c;
145     }
146 }
147
148
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