nz.net.ultraq.jaxb.adapters.XMLLocalDateAdapter.groovy Maven / Gradle / Ivy

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/*
 * Copyright 2013, Emanuel Rabina (http://www.ultraq.net.nz/)
 * 
 * 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 nz.net.ultraq.jaxb.adapters

import javax.xml.bind.annotation.adapters.XmlAdapter

import org.joda.time.LocalDate
import org.joda.time.format.DateTimeFormatterBuilder
import org.joda.time.format.ISODateTimeFormat

/**
 * XML Date/Time adapter to convert between XML DateTime format and the Joda
 * LocalDate object.
 * 
 * @author Emanuel Rabina
 * @author David J. M. Karlsen
 */
class XMLLocalDateAdapter extends XmlAdapter {

	/**
	 * Converts a Joda LocalDate to an XML/ISO8601 date/time string.
	 * 
	 * @param value
	 * @return XML date/time string.
	 */
	@Override
	public String marshal(LocalDate value) {

		return value != null ? ISODateTimeFormat.date().withOffsetParsed().print(value) : null;
	}

	/**
	 * Converts any ISO8601 date/time string into a Joda DateTime object.
	 * 
	 * @param value
	 * @return Joda DateTime.
	 */
	@Override
	LocalDate unmarshal(String value) {

		return value != null ?
			new DateTimeFormatterBuilder()
				.append(ISODateTimeFormat.dateParser())
				.appendOptional(new DateTimeFormatterBuilder()
					.appendTimeZoneOffset('Z', true, 2, 4)
					.toFormatter()
					.getParser())
				.toFormatter()
				.parseLocalDate(value) :
			null
	}
}