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Java > Open Source Codes > oracle > toplink > essentials > internal > ejb > cmp3 > xml > tables > XMLTableHelper


1 /*
2  * The contents of this file are subject to the terms
3  * of the Common Development and Distribution License
4  * (the "License"). You may not use this file except
5  * in compliance with the License.
6  *
7  * You can obtain a copy of the license at
8  * glassfish/bootstrap/legal/CDDLv1.0.txt or
9  * https://glassfish.dev.java.net/public/CDDLv1.0.html.
10  * See the License for the specific language governing
11  * permissions and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL
14  * HEADER in each file and include the License file at
15  * glassfish/bootstrap/legal/CDDLv1.0.txt. If applicable,
16  * add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your
18  * own identifying information: Portions Copyright [yyyy]
19  * [name of copyright owner]
20  */
21 // Copyright (c) 1998, 2006, Oracle. All rights reserved.
22 package oracle.toplink.essentials.internal.ejb.cmp3.xml.tables;
23
24 import org.w3c.dom.Node JavaDoc;
25 import org.w3c.dom.NodeList JavaDoc;
26
27 import oracle.toplink.essentials.internal.ejb.cmp3.xml.XMLHelper;
28 import oracle.toplink.essentials.internal.ejb.cmp3.xml.XMLConstants;
29
30 import oracle.toplink.essentials.internal.helper.DatabaseTable;
31
32 /**
33  * Object to hold onto an XML table metadata in a TopLink database table.
34  *
35  * @author Guy Pelletier
36  * @since TopLink EJB 3.0 Reference Implementation
37  */
38 public class XMLTableHelper {
39     /**
40      * INTERNAL:
41      * Process the unique-constraints for a given table node.
42      */
43     public static void processUniqueConstraints(Node JavaDoc node, XMLHelper helper, DatabaseTable table) {
44         NodeList JavaDoc uniqueConstraintNodes = helper.getNodes(node, XMLConstants.UNIQUE_CONSTRAINTS);
45         
46         if (uniqueConstraintNodes != null) {
47             for (int i = 0; i < uniqueConstraintNodes.getLength(); i++) {
48                 NodeList JavaDoc columnNameNodes = helper.getTextColumnNodes(uniqueConstraintNodes.item(i));
49                 
50                 if (columnNameNodes != null) {
51                     for (int k = 0; k < columnNameNodes.getLength(); k++) {
52                         String JavaDoc columnName = columnNameNodes.item(k).getNodeValue();
53                         
54                         if (columnName != null && !columnName.equals("")) {
55                             table.addUniqueConstraint(columnName);
56                         }
57                     }
58                 }
59             }
60         }
61     }
62 }
63
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