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/**
 * Legato is a configurable, lightweight web mapping client that can be
 * easily embedded into web pages and portals, CMS and individual web
 * applications. Legato is implemented in JavaScript and based on the
 * popular open source library OpenLayers.
 *
 * Copyright (C) 2010  disy Informationssysteme GmbH, http://www.disy.net
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */

package net.disy.commons.xml.namespace.dwr;

import java.util.Map;
import java.util.TreeMap;

import javax.xml.namespace.QName;

import net.disy.commons.dwr.convert.AbstractConverter;

import org.apache.commons.lang.StringUtils;
import org.directwebremoting.dwrp.ObjectOutboundVariable;
import org.directwebremoting.extend.InboundContext;
import org.directwebremoting.extend.InboundVariable;
import org.directwebremoting.extend.MarshallException;
import org.directwebremoting.extend.OutboundContext;
import org.directwebremoting.extend.OutboundVariable;

public class QNameConverter extends AbstractConverter {

  @Override
  protected Object convertInbound(
      @SuppressWarnings("unchecked") Class paramType,
      InboundVariable data,
      Map tokens,
      InboundContext inctx,
      String value) throws MarshallException {

    final String namespaceURI = getValue("namespaceURI", String.class, data, tokens, inctx); //$NON-NLS-1$
    final String localPart = getValue("localPart", String.class, data, tokens, inctx); //$NON-NLS-1$
    final String prefix = getValue("prefix", String.class, data, tokens, inctx); //$NON-NLS-1$

    final QName result;
    if (!StringUtils.isEmpty(namespaceURI) && !StringUtils.isEmpty(prefix)) {
      result = new QName(namespaceURI, localPart, prefix);
    }
    else if (!StringUtils.isEmpty(namespaceURI)) {
      result = new QName(namespaceURI, localPart);
    }
    else {
      result = new QName(localPart);
    }

    return result;
  }

  @Override
  public OutboundVariable convertOutbound(Object data, OutboundContext outctx)
      throws MarshallException {

    final QName name = (QName) data;

    //         // Where we collect out converted children
    final Map ovs = new TreeMap();

    // We need to do this before collecing the children to save recurrsion
    final ObjectOutboundVariable ov = new ObjectOutboundVariable(outctx);
    outctx.put(data, ov);

    if (!StringUtils.isEmpty(name.getNamespaceURI())) {
      ovs.put("namespaceURI", getConverterManager() //$NON-NLS-1$
          .convertOutbound(name.getNamespaceURI(), outctx));
    }
    ovs.put("localPart", getConverterManager().convertOutbound(name.getLocalPart(), outctx)); //$NON-NLS-1$

    if (!StringUtils.isEmpty(name.getPrefix())) {
      ovs.put("prefix", getConverterManager().convertOutbound(name.getPrefix(), outctx)); //$NON-NLS-1$
    }
    ov.init(ovs, null);

    return ov;
  }

}