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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 2003 (C) Intalio, Inc. All Rights Reserved.
42   *
43   * $Id$
44   */
45  
46  
47  package org.exolab.castor.mapping;
48  
49  
50  
51  /**
52   * An abstract factory class for creating GeneralizedFieldHandlers.
53   *
54   * 
55   * @author <a href="kvisco@intalio.com">Keith Visco</a>
56   * @version $Revision$ $Date: 2003-10-23 13:53:59 -0600 (Thu, 23 Oct 2003) $
57   */
58  public abstract class FieldHandlerFactory {
59      
60      /**
61       * Returns an array of the supported Class types
62       * for this FieldHandlerFactory. The array may
63       * be empty, but must not be null.
64       *     
65       * @return an array of supported Class types.
66       */
67      public abstract Class[] getSupportedTypes();
68      
69      /**
70       * Returns true if the given Class type is supported by
71       * this FieldHandlerFactory. If the type is supported,
72       * a call to #createFieldHandler will return a valid
73       * FieldHandler. If the type is not supported, a call
74       * to createFieldHandler may return null or throw
75       * a MappingException.
76       *
77       * @param type the Class type to determine support for.
78       *
79       * @return true if the given Class type is supported.
80       */
81      public abstract boolean isSupportedType(Class type);
82      
83      /**
84       * Creates a GeneralizedFieldHandler for the given class type.
85       * The method should return a new GeneralizedFieldHandler as
86       * an "underlying" FieldHandler will need to be set by the 
87       * caller.
88       *
89       * @param type the Class type to create the FieldHandler for.
90       */
91      public abstract GeneralizedFieldHandler createFieldHandler(Class type) 
92          throws MappingException;
93          
94      
95      
96  } //-- FieldHandlerFactory
97  
98  
99