com.rapiddweller.common.converter.String2TimestampConverter Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of rd-lib-common Show documentation

'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.

There is a newer version: 2.0.1-jdk-11

Show newest version

/*
 * 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 com.rapiddweller.common.Converter;
import com.rapiddweller.common.StringUtil;

import java.sql.Timestamp;
import java.util.Date;

/**
 * Parses Strings converting them to {@link Timestamp}s.
 * Created at 01.10.2009 10:53:20
 *
 * @author Volker Bergmann
 * @since 0.5.0
 */
public class String2TimestampConverter extends ConverterWrapper
    implements Converter {

  /**
   * Instantiates a new String 2 timestamp converter.
   */
  public String2TimestampConverter() {
    super(new String2DateConverter<>());
  }

  @Override
  public Class getSourceType() {
    return String.class;
  }

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

  @Override
  public Timestamp convert(String sourceValue) throws ConversionException {
    if (StringUtil.isEmpty(sourceValue)) {
      return null;
    }

    // separate the String into Date and nano parts
    sourceValue = sourceValue.trim();
    String datePart;
    String nanoPart;
    if (sourceValue.contains(".")) {
      String[] parts = StringUtil.splitOnFirstSeparator(sourceValue, '.');
      datePart = parts[0];
      nanoPart = parts[1];
    } else {
      datePart = sourceValue;
      nanoPart = null;
    }

    // calculate date part
    Date date = realConverter.convert(datePart);
    Timestamp result = new Timestamp(date.getTime());

    // calculate nano part
    if (!StringUtil.isEmpty(nanoPart)) {
      nanoPart = StringUtil.padRight(nanoPart, 9, '0');
      int nanos = Integer.parseInt(nanoPart);
      result.setNanos(nanos);
    }
    return result;
  }

}