streams-contrib/streams-provider-twitter/src/main/java/org/apache/streams/twitter/converter/TwitterDateSwap.java

/*
* 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
*
*   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.streams.twitter.converter;

import org.apache.juneau.BeanSession;
import org.apache.juneau.ClassMeta;
import org.apache.juneau.parser.ParseException;
import org.apache.juneau.transform.StringSwap;
import org.apache.streams.data.util.RFC3339Utils;

import java.time.LocalDateTime;
import java.time.ZoneOffset;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Date;

/**
 * Transforms {@link Date} to {@link String Strings}.
 */

public class TwitterDateSwap extends StringSwap<Date> {

  DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern(TwitterDateTimeFormat.TWITTER_FORMAT);

  @Override /* PojoSwap */
  public String swap(BeanSession session, Date o) {
    return ZonedDateTime.ofInstant(o.toInstant(), ZoneOffset.UTC).format(dateTimeFormatter);
  }

  @Override /* PojoSwap */
  public Date unswap(BeanSession session, String s, ClassMeta<?> hint) {
    return Date.from(LocalDateTime.parse(s, dateTimeFormatter).atZone(ZoneOffset.UTC).toInstant());
  }

}