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org.apache.portals.graffito.jcr.persistence.collectionconverter.ManageableCollectionUtil	0%	0%

1		/*
2		* Copyright 2004-2005 The Apache Software Foundation or its licensors,
3		* as applicable.
4		*
5		* Licensed under the Apache License, Version 2.0 (the "License");
6		* you may not use this file except in compliance with the License.
7		* You may obtain a copy of the License at
8		*
9		* http://www.apache.org/licenses/LICENSE-2.0
10		*
11		* Unless required by applicable law or agreed to in writing, software
12		* distributed under the License is distributed on an "AS IS" BASIS,
13		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14		* See the License for the specific language governing permissions and
15		* limitations under the License.
16		*/
17		package org.apache.portals.graffito.jcr.persistence.collectionconverter;
18
19
20		import java.util.ArrayList;
21		import java.util.Collection;
22		import java.util.List;
23		import java.util.Vector;
24
25		import org.apache.portals.graffito.jcr.exception.JcrMappingException;
26		import org.apache.portals.graffito.jcr.persistence.collectionconverter.impl.ManageableArrayList;
27		import org.apache.portals.graffito.jcr.persistence.collectionconverter.impl.ManageableVector;
28
29		/**
30		* Utility class used to instantiate {@link ManageableCollection}
31		*
32		* @author <a href="mailto:christophe.lombart@gmail.com">Christophe Lombart</a>
33		*
34		*/
35	0	public class ManageableCollectionUtil {
36
37		/**
38		* Instantiate a new {@link ManageableCollection}
39		* @param manageableCollectionClassName The manageable collection class name
40		* @return an emtpy created {@link ManageableCollection}
41		*/
42		public static ManageableCollection getManageableCollection(String manageableCollectionClassName) {
43		try {
44	0	Class collectionClass = Class.forName(manageableCollectionClassName);
45
46	0	return (ManageableCollection) collectionClass.newInstance();
47		}
48	0	catch (Exception e) {
49	0	throw new JcrMappingException("Cannot create manageable collection : "
50		+ manageableCollectionClassName,
51		e);
52		}
53		}
54
55		/**
56		* Instantiate a new {@link ManageableCollection}
57		* @param collectionClass the collection class name
58		* @return an emtpy created {@link ManageableCollection}
59		*/
60
61		public static ManageableCollection getManageableCollection(Class collectionClass) {
62		try {
63
64	0	if (collectionClass.equals(ArrayList.class)) {
65	0	return new ManageableArrayList();
66		}
67
68	0	if (collectionClass.equals(Vector.class)) {
69	0	return new ManageableVector();
70		}
71
72	0	if (collectionClass.equals(Collection.class) || collectionClass.equals(List.class)) {
73	0	return new ManageableArrayList();
74		}
75
76	0	Object collection = collectionClass.newInstance();
77	0	if (!(collection instanceof ManageableCollection)) {
78	0	throw new JcrMappingException("Unsupported collection type :"
79		+ collectionClass.getName());
80		}
81		else {
82	0	return (ManageableCollection) collection;
83		}
84		}
85	0	catch (Exception e) {
86	0	throw new JcrMappingException("Cannot create manageable collection", e);
87		}
88		}
89
90		/**
91		* Convert a java Collection object into a {@link ManageableCollection}.
92		* Until now, only the following class are supported :
93		* Collection, List, ArrayList, Vector
94		*
95		* If you need a Map, you have to write your own {@link ManageableCollection}.
96		* @param object the java collection or Map
97		* @return The converted {@link ManageableCollection}
98		*
99		*/
100		public static ManageableCollection getManageableCollection(Object object) {
101		try {
102	0	if (object == null) {
103	0	return null;
104		}
105
106	0	if (object instanceof ManageableCollection) {
107	0	return (ManageableCollection) object;
108
109		}
110	0	if (object.getClass().equals(ArrayList.class)) {
111	0	ManageableArrayList manageableArrayList = new ManageableArrayList();
112	0	manageableArrayList.addAll((Collection) object);
113
114	0	return manageableArrayList;
115		}
116
117	0	if (object.getClass().equals(Vector.class)) {
118	0	ManageableVector manageableVector = new ManageableVector();
119	0	manageableVector.addAll((Collection) object);
120
121	0	return manageableVector;
122		}
123
124	0	if (object.getClass().equals(Collection.class)
125		|| object.getClass().equals(List.class)) {
126	0	ManageableArrayList manageableArrayList = new ManageableArrayList();
127	0	manageableArrayList.addAll((Collection) object);
128
129	0	return manageableArrayList;
130		}
131		}
132	0	catch (Exception e) {
133	0	throw new JcrMappingException("Impossible to create the manageable collection", e);
134	0	}
135
136	0	throw new JcrMappingException("Unsupported collection type :" + object.getClass().getName());
137		}
138		}

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