/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */
package org.apache.apex.malhar.lib.utils;


import java.util.Map;

import org.apache.hadoop.classification.InterfaceStability;

/**
 * @since 3.4.0
 */
@InterfaceStability.Evolving
public class ByteArrayClassLoader extends ClassLoader
{
  private final Map<String, byte[]> classes;

  public ByteArrayClassLoader(Map<String, byte[]> classes)
  {
    this.classes = classes;
  }

  public ByteArrayClassLoader(Map<String, byte[]> classes, ClassLoader parent)
  {
    super(parent);
    this.classes = classes;
  }

  public Class findClass(String name) throws ClassNotFoundException
  {
    byte[] data = (byte[])((byte[])this.classes.get(name));
    if (data == null) {
      throw new ClassNotFoundException(name);
    } else {
      return super.defineClass(name, data, 0, data.length);
    }
  }
}
