plugins/org.eclipse.emf.cdo.common/src/org/eclipse/emf/cdo/common/model/CDOClassProxy.java

/***************************************************************************
 * 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
 **************************************************************************/
package org.eclipse.emf.cdo.common.model;


/**
 * @author Eike Stepper
 * @since 2.0
 */
public final class CDOClassProxy
{
  private CDOPackageManager packageManager;

  private CDOClassifierRef classRef;

  private CDOClass cdoClass;

  public CDOClassProxy()
  {
  }

  public CDOClassProxy(CDOClassifierRef classRef, CDOPackageManager packageManager)
  {
    this.classRef = classRef;
    this.packageManager = packageManager;
  }

  public CDOClassProxy(CDOClass cdoClass)
  {
    this.cdoClass = cdoClass;
  }

  public String getPackageURI()
  {
    if (cdoClass == null)
    {
      return classRef.getPackageURI();
    }

    return cdoClass.getContainingPackage().getPackageURI();
  }

  public int getClassifierID()
  {
    if (cdoClass == null)
    {
      return classRef.getClassifierID();
    }

    return cdoClass.getClassifierID();
  }

  public void setCDOPackageManager(CDOPackageManager packageManager)
  {
    this.packageManager = packageManager;
  }

  // TODO Clarify camel case
  public CDOClass getCdoClass()
  {
    if (cdoClass == null)
    {
      cdoClass = classRef.resolve(packageManager);
      if (cdoClass == null)
      {
        throw new IllegalStateException("Unable to resolve class ref: " + classRef);
      }
    }

    return cdoClass;
  }

  // TODO Clarify camel case
  public void setCdoClass(CDOClass cdoClass)
  {
    this.cdoClass = cdoClass;
  }

  public CDOClassifierRef getClassRef()
  {
    if (classRef == null)
    {
      classRef = cdoClass.createClassRef();
    }

    return classRef;
  }

  @Override
  public String toString()
  {
    if (cdoClass != null)
    {
      return cdoClass.toString();
    }

    return classRef.toString();
  }
}