Package org.exolab.castor.xml.descriptors

Source Code of org.exolab.castor.xml.descriptors.EnumerationDescriptor

/*
* Redistribution and use of this software and associated documentation
* ("Software"), with or without modification, are permitted provided
* that the following conditions are met:
*
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*    statements and notices.  Redistributions must also contain a
*    copy of this document.
*
* 2. Redistributions in binary form must reproduce the
*    above copyright notice, this list of conditions and the
*    following disclaimer in the documentation and/or other
*    materials provided with the distribution.
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* 3. The name "Exolab" must not be used to endorse or promote
*    products derived from this Software without prior written
*    permission of Intalio, Inc.  For written permission,
*    please contact info@exolab.org.
*
* 4. Products derived from this Software may not be called "Exolab"
*    nor may "Exolab" appear in their names without prior written
*    permission of Intalio, Inc. Exolab is a registered
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*
* 5. Due credit should be given to the Exolab Project
*    (http://www.exolab.org/).
*
* THIS SOFTWARE IS PROVIDED BY INTALIO, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
* INTALIO, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Copyright 2003-2004 (C) Intalio, Inc. All Rights Reserved.
*
* $Id: EnumerationDescriptor.java 6671 2007-01-02 05:57:46Z ekuns $
*/
package org.exolab.castor.xml.descriptors;

import org.exolab.castor.mapping.FieldHandler;
import org.exolab.castor.xml.NodeType;
import org.exolab.castor.xml.XMLFieldHandler;
import org.exolab.castor.xml.util.XMLClassDescriptorImpl;
import org.exolab.castor.xml.util.XMLFieldDescriptorImpl;

/**
* The default class descriptor for Enumerations that are passed in as the
* root-level class, this is really only useful for marshaling, as Enumerations
* are immutable.
*
* @author <a href="mailto:kvisco-at-intalio.com">Keith Visco</a>
* @version $Revision: 6671 $ $Date: 2004-12-16 22:49:25 -0700 (Thu, 16 Dec 2004) $
*/
public class EnumerationDescriptor extends XMLClassDescriptorImpl {

      //----------------/
     //- Constructors -/
    //----------------/

    /**
     * Creates a new EnumerationDescriptor.
     */
    public EnumerationDescriptor() {
        super(java.util.Enumeration.class);
        //-- create element descriptor

        XMLFieldDescriptorImpl desc = new XMLFieldDescriptorImpl(Object.class,
                "_elements", null, NodeType.Element);

        FieldHandler handler = (new XMLFieldHandler() {

            /**
             * {@inheritDoc}
             */
            public Object getValue(final Object object) throws IllegalStateException {
                return object;
            }

            /**
             * {@inheritDoc}
             */
            public void setValue(final Object object, final Object value)
                throws IllegalStateException, IllegalArgumentException {
                //-- do nothing since enumerations are immutable.
            }

            /**
             * {@inheritDoc}
             */
            public Object newInstance(final Object parent) {
                //-- not used
                return null;
            }
        });
        desc.setHandler(handler);
        desc.setMultivalued(true);

        addFieldDescriptor(desc);
    } //-- EnumerationDescriptor()

} //-- EnumerationDescriptor
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