1 /* ====================================================================
2 * The Apache Software License, Version 1.1
3 *
4 * Copyright (c) 2000 The Apache Software Foundation. All rights
5 * reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
17 * distribution.
18 *
19 * 3. The end-user documentation included with the redistribution,
20 * if any, must include the following acknowledgment:
21 * "This product includes software developed by the
22 * Apache Software Foundation (http://www.apache.org/)."
23 * Alternately, this acknowledgment may appear in the software itself,
24 * if and wherever such third-party acknowledgments normally appear.
25 *
26 * 4. The names "Apache" and "Apache Software Foundation" must
27 * not be used to endorse or promote products derived from this
28 * software without prior written permission. For written
29 * permission, please contact apache@apache.org.
30 *
31 * 5. Products derived from this software may not be called "Apache",
32 * nor may "Apache" appear in their name, without prior written
33 * permission of the Apache Software Foundation.
34 *
35 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
36 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
37 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
38 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
42 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
43 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
44 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
45 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
46 * SUCH DAMAGE.
47 * ====================================================================
48 *
49 * This software consists of voluntary contributions made by many
50 * individuals on behalf of the Apache Software Foundation. For more
51 * information on the Apache Software Foundation, please see
52 * <http://www.apache.org/>;.
53 *
54 * Portions of this software are based upon public domain software
55 * originally written at the National Center for Supercomputing Applications,
56 * University of Illinois, Urbana-Champaign.
57 */
58
59 package net.sourceforge.jane;
60
61 import java.util.HashMap;
62 import java.util.Map;
63 import net.sourceforge.jane.lang.ClassInfo;
64
65 /***
66 * A factory for creating {@link ClassInfo} objects.
67 */
68 abstract public class ClassInfoFactory
69 {
70
71 static final public String FACTORY_PROPERTY_PREFIX =
72 "net.sourceforge.jane.class-factory.";
73
74 static final private Map factoryTypeMap = new HashMap();
75
76 static
77 {
78 factoryTypeMap.put("class-loader", net.sourceforge.jane.lang.reflection.ReflectionClassInfoFactory.class);
79 }
80
81 /***
82 * Create an instance of {@link ClassInfo}.
83 */
84 abstract public ClassInfo createClass(Jane jane,
85 ArtifactLocator locator,
86 String className)
87 throws JaneException;
88
89 /***
90 * Returns a factory instance.
91 */
92 static public ClassInfoFactory getInstance(ArtifactLocator locator)
93 throws JaneException
94 {
95 return getInstance(locator.getType());
96 }
97
98 /***
99 * Returns a factory instance.
100 */
101 static public ClassInfoFactory getInstance(String locatorType)
102 throws JaneException
103 {
104 Class factoryClass = (Class) factoryTypeMap.get(locatorType);
105 if (factoryClass == null)
106 throw new JaneException("Unable to locate factory of locator type: " + locatorType);
107 try {
108 return (ClassInfoFactory) factoryClass.newInstance();
109 } catch (Exception e) {
110 throw new JaneException("Error creating factory: " + factoryClass.getName(), e);
111 }
112 }
113
114 }
115
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