1 /*
2 * Redistribution and use of this software and associated documentation
3 * ("Software"), with or without modification, are permitted provided
4 * that the following conditions are met:
5 *
6 * 1. Redistributions of source code must retain copyright
7 * statements and notices. Redistributions must also contain a
8 * copy of this document.
9 *
10 * 2. Redistributions in binary form must reproduce the
11 * above copyright notice, this list of conditions and the
12 * following disclaimer in the documentation and/or other
13 * materials provided with the distribution.
14 *
15 * 3. The name "Exolab" must not be used to endorse or promote
16 * products derived from this Software without prior written
17 * permission of Intalio, Inc. For written permission,
18 * please contact info@exolab.org.
19 *
20 * 4. Products derived from this Software may not be called "Exolab"
21 * nor may "Exolab" appear in their names without prior written
22 * permission of Intalio, Inc. Exolab is a registered
23 * trademark of Intalio, Inc.
24 *
25 * 5. Due credit should be given to the Exolab Project
26 * (http://www.exolab.org/).
27 *
28 * THIS SOFTWARE IS PROVIDED BY INTALIO, INC. AND CONTRIBUTORS
29 * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
30 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
31 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
32 * INTALIO, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
33 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
34 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
35 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
37 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
39 * OF THE POSSIBILITY OF SUCH DAMAGE.
40 *
41 * Copyright 2004 (C) Intalio, Inc. All Rights Reserved.
42 *
43 * $Id$
44 */
45 package org.exolab.castor.xml.handlers;
46
47 import org.exolab.castor.mapping.FieldHandlerFactory;
48 import org.exolab.castor.mapping.GeneralizedFieldHandler;
49 import org.exolab.castor.mapping.MappingException;
50
51 /**
52 * The default FieldHandlerFactory implementation. Used by the Introspector.
53 * This implementation only supports java.sql.Time and java.sql.Timestamp.
54 *
55 * @author <a href="kvisco@intalio.com">Keith Visco</a>
56 * @version $Revision$ $Date: 2004-04-08 22:44:47 -0600 (Thu, 08 Apr 2004) $
57 */
58 public class DefaultFieldHandlerFactory extends FieldHandlerFactory {
59
60 /** The array of supported classes. */
61 private static final Class[] SUPPORTED_CLASSES = new Class[] {
62 java.sql.Time.class,
63 java.sql.Timestamp.class
64 };
65
66 /**
67 * Returns an array of the supported Class types for this
68 * FieldHandlerFactory. The array may be empty, but must not be null.
69 *
70 * @return an array of supported Class types.
71 */
72 public Class[] getSupportedTypes() {
73 return (Class[]) SUPPORTED_CLASSES.clone();
74 } //-- getSupportedTypes
75
76 /**
77 * Returns true if the given Class type is supported by this
78 * FieldHandlerFactory. If the type is supported, a call to
79 * {@link #createFieldHandler} will return a valid FieldHandler. If the type
80 * is not supported, a call to createFieldHandler may return null or throw a
81 * MappingException.
82 *
83 * @param type the Class type to determine support for.
84 *
85 * @return true if the given Class type is supported.
86 */
87 public boolean isSupportedType(final Class type) {
88 for (int i = 0; i < SUPPORTED_CLASSES.length; i++) {
89 if (SUPPORTED_CLASSES[i].isAssignableFrom(type)) {
90 return true;
91 }
92 }
93 return false;
94 } //-- isSupportedType
95
96 /**
97 * Creates a GeneralizedFieldHandler for the given class type. The method
98 * should return a new GeneralizedFieldHandler as an "underlying"
99 * FieldHandler will need to be set by the caller.
100 * @param type the Class type to create the FieldHandler for.
101 * @return a new FieldHandler
102 * @throws MappingException if a <code>valueOf</code> method cannot be found.
103 */
104 public GeneralizedFieldHandler createFieldHandler(final Class type) throws MappingException {
105 if (type == null) {
106 return null;
107 }
108 if (java.sql.Time.class.isAssignableFrom(type)) {
109 return new SQLTimeFieldHandler();
110 }
111 if (java.sql.Timestamp.class.isAssignableFrom(type)) {
112 return new ValueOfFieldHandler(type);
113 }
114 return null;
115 } //-- createFieldHandler
116
117 } //-- DefaultFieldHandlerFactory