/*
 * Copyright (c) 2013, 2014 Eike Stepper (Berlin, Germany) and others.
 * 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.expressions.impl;

import org.eclipse.emf.cdo.expressions.EvaluationContext;

import org.eclipse.net4j.util.WrappedException;

import java.util.HashMap;
import java.util.Map;

/**
 * A {@link HashMap}-based default implementation of an {@link EvaluationContext}.
 *
 * @author Eike Stepper
 */
public class EvaluationContextImpl extends HashMap<String, Object>implements EvaluationContext
{
  private static final long serialVersionUID = 1L;

  public EvaluationContextImpl()
  {
  }

  public EvaluationContextImpl(int initialCapacity, float loadFactor)
  {
    super(initialCapacity, loadFactor);
  }

  public EvaluationContextImpl(int initialCapacity)
  {
    super(initialCapacity);
  }

  public EvaluationContextImpl(Map<? extends String, ? extends Object> m)
  {
    super(m);
  }

  public EvaluationContextImpl(Object thisValue)
  {
    put("this", thisValue);
  }

  public Class<?> getClass(String name)
  {
    if (name.lastIndexOf('.') == -1)
    {
      name = "java.lang." + name;
    }

    try
    {
      return getClass().getClassLoader().loadClass(name);
    }
    catch (ClassNotFoundException ex)
    {
      throw WrappedException.wrap(ex);
    }
  }
}