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Java > Open Source Codes > org > apache > cayenne > jpa > map > JpaUniqueConstraint


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19
20
21 package org.apache.cayenne.jpa.map;
22
23 import java.util.ArrayList JavaDoc;
24 import java.util.Collection JavaDoc;
25
26 import javax.persistence.UniqueConstraint;
27
28 public class JpaUniqueConstraint {
29
30     protected Collection JavaDoc<String JavaDoc> columnNames;
31
32     public JpaUniqueConstraint() {
33
34     }
35
36     public JpaUniqueConstraint(UniqueConstraint annotation) {
37         // resolve collection
38 getColumnNames();
39
40         for (int i = 0; i < annotation.columnNames().length; i++) {
41             columnNames.add(annotation.columnNames()[i]);
42         }
43     }
44
45     public Collection JavaDoc<String JavaDoc> getColumnNames() {
46         if (columnNames == null) {
47             columnNames = new ArrayList JavaDoc<String JavaDoc>(2);
48         }
49         return columnNames;
50     }
51 }
52
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