Package com.caucho.jaxb.skeleton

Source Code of com.caucho.jaxb.skeleton.DynamicJAXBElementSkeleton

/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT.  See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
*   Free Software Foundation, Inc.
*   59 Temple Place, Suite 330
*   Boston, MA 02111-1307  USA
*
* @author Emil Ong
*/

package com.caucho.jaxb.skeleton;

import com.caucho.jaxb.JAXBContextImpl;
import com.caucho.jaxb.accessor.Accessor;
import com.caucho.jaxb.accessor.JAXBElementAccessor;
import com.caucho.jaxb.mapping.Namer;
import com.caucho.jaxb.mapping.XmlMapping;
import com.caucho.jaxb.mapping.XmlValueMapping;
import com.caucho.jaxb.mapping.JAXBElementMapping;
import com.caucho.util.L10N;

import javax.xml.bind.annotation.*;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamWriter;

import java.io.IOException;

import java.lang.annotation.*;
import java.lang.reflect.*;

import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.logging.Logger;

/**
*
* Wrapper skeleton when a JAXBElement<X> is specified but no explicit
* JAXBElementSkeleton<X> is registered.  This class is intended to be
* instantiated once per JAXBContext.
*
**/
public class DynamicJAXBElementSkeleton extends ClassSkeleton<Object> {
  // We must extend ClassSkeleton<Object> rather than ClassSkeleton
  // or else javac complains about overridden methods.
  private static final Logger log
    = Logger.getLogger(DynamicJAXBElementSkeleton.class.getName());
  private static final L10N L = new L10N(DynamicJAXBElementSkeleton.class);
  private static final Object[] SINGLE_NULL_ARG = new Object[] {null};

  private final JAXBElementAccessor _accessor;

  public DynamicJAXBElementSkeleton(JAXBContextImpl context)
    throws JAXBException
  {
    super(context);

    _value = new JAXBElementMapping(context);
    _accessor = (JAXBElementAccessor) _value.getAccessor();
  }

  public void write(Marshaller m, XMLStreamWriter out,
                    Object obj, Namer namer,
                    ArrayList<XmlMapping> attributes)
    throws IOException, XMLStreamException, JAXBException
  {
    if (! (obj instanceof JAXBElement))
      throw new IllegalArgumentException(L.l("Object must be a JAXBElement"));

    JAXBElement element = (JAXBElement) obj;

    _accessor.setType(element.getDeclaredType());

    JAXBElementMapping mapping = (JAXBElementMapping) _value;
    mapping.setQName(element.getName());
    mapping.setProperty(_context.createProperty(element.getDeclaredType()));

    super.write(m, out, obj, namer, attributes);
  }

  public Object newInstance()
    throws JAXBException
  {
    // This skeleton should not be used for reading
    throw new IllegalStateException();
  }

  public String toString()
  {
    return "DynamicJAXBElementSkeleton[]";
  }
}
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