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Java > Open Source Codes > org > jboss > beans > metadata > plugins > AbstractSetMetaData


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.beans.metadata.plugins;
23
24 import java.util.Collection JavaDoc;
25 import java.util.HashSet JavaDoc;
26 import java.util.Set JavaDoc;
27
28 import org.jboss.beans.metadata.spi.MetaDataVisitorNode;
29 import org.jboss.util.JBossStringBuilder;
30
31 /**
32  * Set metadata.
33  *
34  * @author <a HREF="adrian@jboss.com">Adrian Brock</a>
35  * @version $Revision: 45764 $
36  */
37 public class AbstractSetMetaData extends AbstractCollectionMetaData implements Set JavaDoc<MetaDataVisitorNode>
38 {
39    /**
40     * Create a new set value
41     */
42    public AbstractSetMetaData()
43    {
44    }
45
46    public boolean add(MetaDataVisitorNode o)
47    {
48       if (collection.contains(o))
49          return false;
50       return super.add(o);
51    }
52
53    public boolean addAll(Collection JavaDoc<? extends MetaDataVisitorNode> c)
54    {
55       boolean changed = false;
56       if (c != null && c.size() > 0)
57       {
58          for (MetaDataVisitorNode o : c)
59          {
60             if (collection.contains(o) == false)
61             {
62                if (super.add(o))
63                   changed = true;
64             }
65          }
66       }
67       return changed;
68    }
69
70    public void toString(JBossStringBuilder buffer)
71    {
72       super.toString(buffer);
73    }
74
75    protected Collection JavaDoc<Object JavaDoc> getDefaultCollectionInstance() throws Throwable JavaDoc
76    {
77       return new HashSet JavaDoc<Object JavaDoc>();
78    }
79 }
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