blob: 4de733ff2986a1dc2b9543b20790a00e419b1b89 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
/**
* <copyright>
*
* Copyright (c) 2005, 2006 Springsite BV (The Netherlands) and others
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Martin Taal
* </copyright>
*
* $Id: EMFInstantiator.java,v 1.3 2006/11/01 16:19:43 mtaal Exp $
*/
package org.eclipse.emf.teneo.hibernate.tuplizer;
import java.io.Serializable;
import java.util.Iterator;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.emf.teneo.hibernate.HbMapperException;
import org.hibernate.mapping.Component;
import org.hibernate.mapping.PersistentClass;
import org.hibernate.tuple.Instantiator;
/**
* Instantiates eobjects using the efactory.
*
* @author <a href="mailto:mtaal@elver.org">Martin Taal</a>
* @version $Revision: 1.3 $
*/
public class EMFInstantiator implements Instantiator {
/** The logger */
private static Log log = LogFactory.getLog(EMFInstantiator.class);
/** The EClass for which we do all this */
private final EClass eclass;
/** The proxy interface if used */
private final Class proxyInterface;
/** The mapped class */
private final Class mappedClass;
/** Constructor */
public EMFInstantiator(EClass eclass, PersistentClass pc) {
log.debug("Creating eobject instantiator for " + pc.getEntityName() + " and eclass " + eclass.getName());
proxyInterface = pc.getProxyInterface();
this.eclass = eclass;
mappedClass = eclass.getInstanceClass();
}
/** Constructor */
public EMFInstantiator(EClass eclass, Component component) {
log.debug("Creating eobject instantiator for component eclass " + eclass.getName());
this.eclass = eclass;
mappedClass = eclass.getInstanceClass();
proxyInterface = null;
}
/** Instantiates using EcoreUtil.create() */
public Object instantiate() {
final EObject eobject = EcoreUtil.create(eclass);
if (eobject == null) {
throw new HbMapperException("The mapped " + mappedClass.getName() + " class can not be instantiated."
+ " Possibly the class it is not an eclass or it is abstract.");
}
return eobject;
}
/** Instantiates using EcoreUtil.create() */
public Object instantiate(Serializable id) {
final EObject eobject = EcoreUtil.create(eclass);
if (eobject == null) {
throw new HbMapperException("The mapped " + mappedClass.getName() + " class can not be instantiated."
+ " Possibly the class it is not an eclass or it is abstract.");
}
return eobject;
}
/** Checks using the mapped class or the proxy interface */
public boolean isInstance(Object object) {
if (!(object instanceof EObject)) return false;
final EObject eobject = (EObject) object;
if (eobject.eClass() == eclass) return true;
if (isSuperTypeOf(eclass, eobject.eClass())) return true;
return (proxyInterface != null && proxyInterface.isInstance(object));
}
/** Is eclass superclass */
private boolean isSuperTypeOf(EClass superEClass, EClass eclass) {
for (Iterator it = eclass.getESuperTypes().iterator(); it.hasNext();) {
final EClass testSuperEClass = (EClass) it.next();
if (testSuperEClass == superEClass) return true;
if (isSuperTypeOf(superEClass, testSuperEClass)) return true;
}
return false;
}
}
|
