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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.ConversionException;

import java.util.Date;
import java.util.TimeZone;

/**
 * Interprets {@link Long} values as milliseconds since 1970-01-01 and
 * converts them to {@link Date} objects.
 * Created: 26.02.2010 08:19:48
 *
 * @author Volker Bergmann
 * @since 0.5.0
 */
public class Long2DateConverter extends ThreadSafeConverter {

  private TimeZone timeZone;

  // constructors ----------------------------------------------------------------------------------------------------

  /**
   * Instantiates a new Long 2 date converter.
   */
  public Long2DateConverter() {
    this(TimeZone.getDefault());
  }

  /**
   * Instantiates a new Long 2 date converter.
   *
   * @param timeZone the time zone
   */
  public Long2DateConverter(TimeZone timeZone) {
    super(Long.class, Date.class);
    this.timeZone = timeZone;
  }

  // properties ------------------------------------------------------------------------------------------------------

  /**
   * Gets time zone.
   *
   * @return the time zone
   */
  public TimeZone getTimeZone() {
    return timeZone;
  }

  /**
   * Sets time zone.
   *
   * @param timeZone the time zone
   */
  public void setTimeZone(TimeZone timeZone) {
    this.timeZone = timeZone;
  }

  // BidirectionalConverter interface implementation -----------------------------------------------------------------

  @Override
  public Class getTargetType() {
    return Date.class;
  }

  @Override
  public Date convert(Long target) throws ConversionException {
    if (target == null) {
      return null;
    }
    return new Date(target - timeZone.getRawOffset());
  }

}