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Java > Open Source Codes > org > jboss > repository > plugins > ThreadMetaDataCombiner


1 /*
2   * JBoss, Home of Professional Open Source
3   * Copyright 2005, JBoss Inc., and individual contributors as indicated
4   * by the @authors tag. See the copyright.txt in the distribution for a
5   * full listing of individual contributors.
6   *
7   * This is free software; you can redistribute it and/or modify it
8   * under the terms of the GNU Lesser General Public License as
9   * published by the Free Software Foundation; either version 2.1 of
10   * the License, or (at your option) any later version.
11   *
12   * This software is distributed in the hope that it will be useful,
13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15   * Lesser General Public License for more details.
16   *
17   * You should have received a copy of the GNU Lesser General Public
18   * License along with this software; if not, write to the Free
19   * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20   * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21   */
22 package org.jboss.repository.plugins;
23
24 import org.jboss.repository.spi.MetaDataCombiner;
25 import org.jboss.repository.spi.Key;
26 import org.jboss.repository.spi.MetaData;
27
28 /**
29  @author Scott.Stark@jboss.org
30  @version $Revision: 41119 $
31  */
32 public class ThreadMetaDataCombiner
33    implements MetaDataCombiner
34 {
35    private static ThreadLocal JavaDoc metaData = new ThreadLocal JavaDoc();
36
37    private MetaDataCombiner next;
38
39    public ThreadMetaDataCombiner(MetaDataCombiner next)
40    {
41       this.next = next;
42    }
43
44    public static Object JavaDoc getMetaData()
45    {
46       return metaData.get();
47    }
48    public static void setMetaData(Object JavaDoc data)
49    {
50       metaData.set(data);
51    }
52
53    public MetaDataCombiner getNext()
54    {
55       return next;
56    }
57    public void setNext(MetaDataCombiner next)
58    {
59       this.next = next;
60    }
61
62    public Object JavaDoc combine(Key key, MetaData[] levelData)
63    {
64       Object JavaDoc value = metaData.get();
65       if( value != null )
66          return value;
67       value = next.combine(key, levelData);
68       return value;
69    }
70 }
71
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