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1   /*
2    * Copyright (c) 2007, James Leigh All rights reserved.
3    * 
4    * Redistribution and use in source and binary forms, with or without
5    * modification, are permitted provided that the following conditions are met:
6    * 
7    * - Redistributions of source code must retain the above copyright notice, this
8    *   list of conditions and the following disclaimer.
9    * - Redistributions in binary form must reproduce the above copyright notice,
10   *   this list of conditions and the following disclaimer in the documentation
11   *   and/or other materials provided with the distribution. 
12   * - Neither the name of the openrdf.org nor the names of its contributors may
13   *   be used to endorse or promote products derived from this software without
14   *   specific prior written permission.
15   * 
16   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
20   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26   * POSSIBILITY OF SUCH DAMAGE.
27   * 
28   */
29  package org.openrdf.elmo.sesame;
30  
31  import java.io.Closeable;
32  import java.io.IOException;
33  import java.util.Iterator;
34  import java.util.Map;
35  import java.util.WeakHashMap;
36  
37  import javax.xml.namespace.QName;
38  
39  import org.openrdf.elmo.ElmoManager;
40  import org.openrdf.elmo.Entity;
41  import org.openrdf.elmo.exceptions.ElmoPersistException;
42  import org.openrdf.elmo.sesame.roles.SesameEntity;
43  import org.openrdf.elmo.sesame.roles.SesameManagerAware;
44  import org.openrdf.model.Resource;
45  
46  /**
47   * Stores the resource and manager for a bean and implements equals, hashCode,
48   * and toString.
49   * 
50   * @author James Leigh
51   * 
52   */
53  public class SesameEntitySupport implements Entity, SesameEntity, SesameManagerAware {
54  
55  	private Map<Closeable, Boolean> tracks = new WeakHashMap<Closeable, Boolean>();
56  
57  	private SesameManager manager;
58  
59  	private Resource resource;
60  
61  	public SesameEntitySupport(Entity instance) {
62  		// create a new support instance for every bean created
63  	}
64  
65  	public ElmoManager getElmoManager() {
66  		return manager;
67  	}
68  
69  	public SesameManager getSesameManager() {
70  		return manager;
71  	}
72  
73  	public void initSesameManager(SesameManager manager) {
74  		this.manager = manager;
75  	}
76  
77  	public Resource getSesameResource() {
78  		return resource;
79  	}
80  
81  	public void initSesameResource(Resource resource) {
82  		this.resource = resource;
83  	}
84  
85  	public QName getQName() {
86  		return manager.getSesameBeanQName(this);
87  	}
88  
89  	public synchronized void opened(Closeable iterator) {
90  		tracks.put(iterator, Boolean.TRUE);
91  	}
92  
93  	public synchronized void close() {
94  		try {
95  			Iterator<Closeable> iter = tracks.keySet().iterator();
96  			while (iter.hasNext()) {
97  				iter.next().close();
98  			}
99  			tracks.clear();
100 		} catch (IOException e) {
101 			throw new ElmoPersistException(e);
102 		}
103 	}
104 
105 	@Override
106 	public boolean equals(Object obj) {
107 		return obj instanceof SesameEntity
108 				&& resource.equals(((SesameEntity) obj).getSesameResource());
109 	}
110 
111 	@Override
112 	public int hashCode() {
113 		return resource.hashCode();
114 	}
115 
116 	@Override
117 	public String toString() {
118 		return resource.toString();
119 	}
120 
121 }