xmiparameterserializer.java

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/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 2000 The Apache Software Foundation.  All rights 
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    the documentation and/or other materials provided with the
 *    distribution.
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 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:  
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
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 * 4. The names "SOAP" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
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 * 5. Products derived from this software may not be called "Apache",
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 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation and was
 * originally based on software copyright (c) 2000, International
 * Business Machines, Inc., http://www.apache.org.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

package org.apache.soap.encoding.xmi;

import java.io.*;
import org.w3c.dom.*;
import org.apache.soap.util.*;
import org.apache.soap.util.xml.*;
import org.apache.soap.*;
import org.apache.soap.rpc.*;

/**
 * A <code>ParameterSerializer</code> is used to serialize and deserialize
 * parameters using the <code>XMI</code> encoding style.
 *
 * @author Francisco Curbera ([e-mail])
 */
public class XMIParameterSerializer implements Serializer, Deserializer
{
  XMIDeserializer xmideserializer = new XMIDeserializer();
  
  public void marshall(String inScopeEncStyle, Class javaType, Object src,
                       Object context, Writer sink, NSStack nsStack,
                       XMLJavaMappingRegistry xjmr, SOAPContext ctx)
    throws IllegalArgumentException, IOException
  {
    nsStack.pushScope();

    Parameter param = (Parameter)src;
    Class type = param.getType();
    String name = param.getName();
    Object value = param.getValue();
    
    xjmr.marshall(Constants.NS_URI_XMI_ENC, type, value, name,
                  sink, nsStack, ctx);

    nsStack.popScope();
  }

  public Bean unmarshall(String inScopeEncStyle, QName elementType, Node src,
                         XMLJavaMappingRegistry xjmr, SOAPContext ctx)
    throws IllegalArgumentException
  {

    Element paramEl = (Element)src;
    String name = paramEl.getTagName();

    // special case for Strings
    if (name.equals("java.lang.String"))
    {
      String st = paramEl.getAttribute("value");

      if (st == null)
        throw new IllegalArgumentException("Unable to unmarshall XMI string.");

      Bean bean = new Bean(java.lang.String.class, new String(st));
      Parameter parameter = new Parameter(name, bean.type, bean.value, null);

      return new Bean(Parameter.class, parameter);
    }
    // special case for nulls
    else if (name.equals("null"))
    {
      String typeName = paramEl.getAttribute("type");

      try
      {
        Bean bean = new Bean(Class.forName(typeName), null);
        Parameter parameter = new Parameter(name, bean.type, bean.value, null);

        return new Bean(Parameter.class, parameter);
      }
      catch (Exception e)
      {
        throw new IllegalArgumentException("Unable to unmarshall XMI null.");
      }
    }

    Bean bean = xmideserializer.unmarshall(Constants.NS_URI_XMI_ENC,
                                           elementType, paramEl, xjmr, ctx);
    Parameter parameter = new Parameter(name, bean.type, bean.value, null);    

    return new Bean(Parameter.class, parameter);

  }
}