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/***************************************************************************
 * Copyright (c) 2004 - 2008 Eike Stepper, Germany.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *    Eike Stepper - initial API and implementation
 *    Simon McDuff - https://bugs.eclipse.org/bugs/show_bug.cgi?id=201266
 **************************************************************************/
package org.eclipse.emf.cdo.internal.server;

import org.eclipse.emf.cdo.internal.protocol.revision.InternalCDORevision;
import org.eclipse.emf.cdo.protocol.CDOID;
import org.eclipse.emf.cdo.protocol.model.CDOClass;
import org.eclipse.emf.cdo.protocol.revision.CDORevision;
import org.eclipse.emf.cdo.protocol.revision.delta.CDORevisionDelta;
import org.eclipse.emf.cdo.server.ISession;
import org.eclipse.emf.cdo.server.IStoreAccessor;
import org.eclipse.emf.cdo.server.IView;

/**
 * @author Eike Stepper
 */
public class StoreAccessor implements IStoreAccessor
{
  private Store store;

  private Object context;

  private boolean reader;

  private StoreAccessor(Store store, Object context, boolean reader)
  {
    this.store = store;
    this.context = context;
    this.reader = reader;
  }

  protected StoreAccessor(Store store, ISession session)
  {
    this(store, session, true);
  }

  protected StoreAccessor(Store store, IView view)
  {
    this(store, view, false);
  }

  public void release()
  {
  }

  public Store getStore()
  {
    return store;
  }

  public boolean isReader()
  {
    return reader;
  }

  public ISession getSession()
  {
    if (context instanceof IView)
    {
      return ((IView)context).getSession();
    }

    return (ISession)context;
  }

  public IView getView()
  {
    if (context instanceof IView)
    {
      return (IView)context;
    }

    return null;
  }

  public InternalCDORevision verifyRevision(CDORevision revision)
  {
    return (InternalCDORevision)revision;
  }

  public CDOID primeNewObject(CDOClass cdoClass)
  {
    return store.getNextCDOID();
  }

  public void writeRevisionDelta(CDORevisionDelta delta)
  {
    throw new UnsupportedOperationException();
  }
}

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