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'rapiddweller Common' is an open source Java library forked from Databene Commons by Volker Bergmann. It provides extensions to the Java core library by utility classes, abstract concepts and concrete implementations.

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/*
 * Copyright (C) 2004-2015 Volker Bergmann ([email protected]).
 * All rights reserved.
 *
 * 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.
 */

package com.rapiddweller.common.converter;

import com.rapiddweller.common.ArrayUtil;
import com.rapiddweller.common.ConversionException;

/**
 * Retrieves the value at a given array index from an array.
 * Created at 30.06.2009 18:02:10
 *
 * @param  the component type of the arrays to process
 * @author Volker Bergmann
 * @since 0.5.0
 */
public class ArrayElementExtractor extends ThreadSafeConverter {

  private final int index;

  /**
   * Instantiates a new Array element extractor.
   *
   * @param componentType the component type
   * @param index         the index
   */
  @SuppressWarnings("unchecked")
  public ArrayElementExtractor(Class componentType, int index) {
    super(ArrayUtil.arrayType(componentType), componentType);
    this.index = index;
  }

  @Override
  public E convert(E[] sourceValue) throws ConversionException {
    return sourceValue[index];
  }

}