Package com.arjuna.mwlabs.wsc11

Source Code of com.arjuna.mwlabs.wsc11.ContextFactoryMapperImple

/*
* JBoss, Home of Professional Open Source
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags.
* See the copyright.txt in the distribution for a full listing
* of individual contributors.
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA  02110-1301, USA.
*
* (C) 2005-2006,
* @author JBoss Inc.
*/
/*
* Copyright (C) 2002,
*
* Arjuna Technologies Limited,
* Newcastle upon Tyne,
* Tyne and Wear,
* UK.
*
* $Id: ContextFactoryMapperImple.java,v 1.12.4.1 2005/11/22 10:34:09 kconner Exp $
*/

package com.arjuna.mwlabs.wsc11;

import com.arjuna.mw.wscf.common.CoordinatorXSD;
import com.arjuna.mw.wscf11.protocols.ProtocolManager;
import com.arjuna.mw.wscf11.protocols.ProtocolRegistry;
import com.arjuna.wsc11.ContextFactoryMapper;
import com.arjuna.wsc11.ContextFactory;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

/**
* @author Mark Little (mark.little@arjuna.com)
* @version $Id: ContextFactoryMapperImple.java,v 1.11 2004/08/10 15:10:27
*          kconner Exp $
* @since 1.0.
*/

public class ContextFactoryMapperImple extends ContextFactoryMapper
{

  public ContextFactoryMapperImple()
  {
    _protocols = ProtocolRegistry.createManager();
  }

  public void addContextFactory (String coordinationTypeURI, ContextFactory contextFactory)
  {
    try
    {
      _protocols.addProtocol(convert(coordinationTypeURI), contextFactory);

      contextFactory.install(coordinationTypeURI);
    }
    catch (Exception ex)
    {
      ex.printStackTrace();
    }
  }

  public void removeContextFactory (String coordinationTypeURI)
  {
    try
    {
      ContextFactory contextFactory = (ContextFactory) _protocols.removeProtocol(convert(coordinationTypeURI));

      contextFactory.uninstall(coordinationTypeURI);
    }
    catch (Exception ex)
    {
      ex.printStackTrace();
    }
  }

  /*
   * The factory implementation must initialise the activity service with the
   * correct HLS.
   */

  public ContextFactory getContextFactory (String coordinationTypeURI)
  {
    try
    {
      org.w3c.dom.Document doc = convert(coordinationTypeURI);
            // get and replace have to happen atomically
            synchronized (_protocols) {
                Object type = _protocols.getProtocolImplementation(convert(coordinationTypeURI));

                if (type instanceof String)
                {
                    Class c = Class.forName((String) type);

                    ContextFactory factory = (ContextFactory) c.newInstance();

                    _protocols.replaceProtocol(doc, factory);

                    return factory;
                }
                else
                {
                    return (ContextFactory) type;
                }
            }
        }
    catch (Exception ex)
    {
      ex.printStackTrace();
    }

    return null;
  }

  public void setSubordinateContextFactoryMapper (ContextFactoryMapper subordinateContextFactoryMapper)
  {
  }

  public ContextFactoryMapper getSubordinateContextFactoryMapper ()
  {
    return null;
  }

  public void setDefaultContextFactory (ContextFactory defaultContextFactory)
  {
  }

  public ContextFactory getDefaultContextFactory ()
  {
    return null;
  }

  private org.w3c.dom.Document convert (String coordinationTypeURI)
      throws Exception
  {
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder = factory.newDocumentBuilder();
    org.w3c.dom.Document doc = builder.newDocument();
    org.w3c.dom.Element rootElement = doc.createElement(_wscRootElement);
    org.w3c.dom.Element elem = doc.createElement(CoordinatorXSD.coordinatorType);

    elem.appendChild(doc.createTextNode(coordinationTypeURI));

    rootElement.appendChild(elem);

    doc.appendChild(rootElement);

    return doc;
  }

  private void writeObject (java.io.ObjectOutputStream objectOutputStream)
      throws java.io.IOException
  {
  }

  private void readObject (java.io.ObjectInputStream objectInputStream)
      throws java.io.IOException, ClassNotFoundException
  {
  }

  public static final String localName ()
  {
    // return "com/arjuna/mwlabs/wsc/contextfactorymapper";
    return "comarjunamwlabswsccontextfactorymapperws";
  }

  private ProtocolManager _protocols;

  private static final String _wscRootElement = "WS-C";

}
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