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/***********************************************************************************************************************
 *
 * OpenBlueSky - NetBeans Platform Enhancements
 * Copyright (C) 2006-2012 by Tidalwave s.a.s. (http://www.tidalwave.it)
 *
 ***********************************************************************************************************************
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations under the License.
 *
 ***********************************************************************************************************************
 *
 * WWW: http://openbluesky.java.net
 * SCM: https://bitbucket.org/tidalwave/openbluesky-src
 *
 **********************************************************************************************************************/
package it.tidalwave.netbeans.indexeddataobject.impl;

import javax.annotation.CheckForNull;
import javax.annotation.Nonnull;
import javax.annotation.PostConstruct;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.Serializable;
import org.openide.loaders.DataObject;
import it.tidalwave.util.Id;
import it.tidalwave.role.Identifiable;
import it.tidalwave.netbeans.util.Locator;
import it.tidalwave.netbeans.indexeddataobject.IndexedDataObjectManager;

/***********************************************************************************************************************
 *
 * The most appropriate long-term persistence for IndexedDataObjects is their
 * id, while DataObjects serialize the primary file (furthermore  primary
 * files, when serialized, lose their id, so this stuff is really needed).
 *
 * @author  Fabrizio Giudici
 * @version $Id: $
 *
 **********************************************************************************************************************/
public class IndexedDataObjectReplace implements Serializable
  {
    private static final long serialVersionUID = 4049595044948243058L;

    private static final IndexedDataObjectManager indexedDataObjectManager = Locator.find(IndexedDataObjectManager.class);

    @Nonnull
    private Id id;

    @CheckForNull
    private transient DataObject dataObject;

    public IndexedDataObjectReplace (final DataObject dataObject)
      {
        this.dataObject = dataObject;
      }

    @PostConstruct
    private void initialize()
      {
        this.id = dataObject.getLookup().lookup(Identifiable.class).getId();
      }

    @Nonnull
    public Object readResolve()
      {
        return dataObject;
      }

    private void readObject (final @Nonnull ObjectInputStream ois)
      throws IOException, ClassNotFoundException
      {
        ois.defaultReadObject();

        if (id == null)
          {
            throw new FileNotFoundException();
          }

        dataObject = indexedDataObjectManager.findById(id);
      }
  }