/*
 * Copyright (C) 2009 eXo Platform SAS.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.exoplatform.services.jcr.impl.dataflow.serialization;

import org.exoplatform.services.jcr.access.AccessControlList;
import org.exoplatform.services.jcr.dataflow.persistent.PersistedNodeData;
import org.exoplatform.services.jcr.dataflow.serialization.ObjectReader;
import org.exoplatform.services.jcr.dataflow.serialization.SerializationConstants;
import org.exoplatform.services.jcr.dataflow.serialization.UnknownClassIdException;
import org.exoplatform.services.jcr.datamodel.IllegalNameException;
import org.exoplatform.services.jcr.datamodel.IllegalPathException;
import org.exoplatform.services.jcr.datamodel.InternalQName;
import org.exoplatform.services.jcr.datamodel.QPath;

import java.io.IOException;

/**
 * Created by The eXo Platform SAS. <br/>Date:
 * 
 * @author <a href="karpenko.sergiy@gmail.com">Karpenko Sergiy</a>
 * @version $Id: PresistedNodeDataReader.java 1518 2010-01-20 23:33:30Z sergiykarpenko $
 */
public class PresistedNodeDataReader
{

   /**
    * Read and set PersistedNodeData data.
    * 
    * @param in ObjectReader.
    * @return PersistedNodeData object.
    * @throws UnknownClassIdException If read Class ID is not expected or do not
    *           exist.
    * @throws IOException If an I/O error has occurred.
    */
   public PersistedNodeData read(ObjectReader in) throws UnknownClassIdException, IOException
   {
      // read id
      int key;
      if ((key = in.readInt()) != SerializationConstants.PERSISTED_NODE_DATA)
      {
         throw new UnknownClassIdException("There is unexpected class [" + key + "]");
      }

      QPath qpath;
      try
      {
         String sQPath = in.readString();
         qpath = QPath.parse(sQPath);
      }
      catch (final IllegalPathException e)
      {
         throw new IOException("Deserialization error. " + e)
         {

            /**
             * {@inheritDoc}
             */
            @Override
            public Throwable getCause()
            {
               return e;
            }
         };
      }

      String identifier = in.readString();

      String parentIdentifier = null;
      if (in.readByte() == SerializationConstants.NOT_NULL_DATA)
      {
         parentIdentifier = in.readString();
      }

      int persistedVersion = in.readInt();
      // --------------

      int orderNum = in.readInt();

      // primary type
      InternalQName primaryTypeName;
      try
      {
         primaryTypeName = InternalQName.parse(in.readString());
      }
      catch (final IllegalNameException e)
      {
         throw new IOException(e.getMessage())
         {
            private static final long serialVersionUID = 3489809179234435267L;

            /**
             * {@inheritDoc}
             */
            @Override
            public Throwable getCause()
            {
               return e;
            }
         };
      }

      // mixins
      InternalQName[] mixinTypeNames = null;
      if (in.readByte() == SerializationConstants.NOT_NULL_DATA)
      {
         int count = in.readInt();
         mixinTypeNames = new InternalQName[count];
         for (int i = 0; i < count; i++)
         {
            try
            {
               mixinTypeNames[i] = InternalQName.parse(in.readString());
            }
            catch (final IllegalNameException e)
            {
               throw new IOException(e.getMessage())
               {
                  private static final long serialVersionUID = 3489809179234435268L; // eclipse

                  // gen

                  /**
                   * {@inheritDoc}
                   */
                  @Override
                  public Throwable getCause()
                  {
                     return e;
                  }
               };
            }
         }
      }

      // acl
      AccessControlList acl = null;
      if (in.readByte() == SerializationConstants.NOT_NULL_DATA)
      {
         ACLReader rdr = new ACLReader();
         acl = rdr.read(in);
      }

      return new PersistedNodeData(identifier, qpath, parentIdentifier, persistedVersion, orderNum, primaryTypeName,
         mixinTypeNames, acl);
   }

}
