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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.format;

import java.text.DateFormat;
import java.text.FieldPosition;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * Concurrent implementation of the {@link SimpleDateFormat} features.
 * Created: 26.02.2010 15:27:23
 *
 * @author Volker Bergmann
 * @since 0.5.0
 */
public class ConcurrentDateFormat extends DateFormat {

  private final ThreadLocal format;

  /**
   * Instantiates a new Concurrent date format.
   *
   * @param pattern the pattern
   */
  public ConcurrentDateFormat(final String pattern) {
    format = ThreadLocal.withInitial(() -> new SimpleDateFormat(pattern));
  }

  @Override
  public StringBuffer format(Date date, StringBuffer toAppendTo, FieldPosition fieldPosition) {
    return format.get().format(date, toAppendTo, fieldPosition);
  }

  @Override
  public Date parse(String source, ParsePosition pos) {
    return format.get().parse(source, pos);
  }

  private static final long serialVersionUID = -1665638058197198209L;

}