EDIT

/**

* Copyright (C) 2007 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.remote.dto.assembler.converter;

import java.time.ZonedDateTime;

import java.util.GregorianCalendar;

import javax.xml.datatype.DatatypeConfigurationException;

import javax.xml.datatype.DatatypeFactory;

import javax.xml.datatype.XMLGregorianCalendar;

import org.dozer.CustomConverter;

import org.dozer.MappingException;

public class DateTimeConverter implements CustomConverter {

	@Override

    public Object convert(Object destination, Object source, Class destClass, Class sourceClass) {

		if (source == null) {

			return null;

		}

		Object result = null;

		if (source instanceof ZonedDateTime) {

			if(destClass.equals(ZonedDateTime.class)){

				result =  source;

			} else if(destClass.equals(XMLGregorianCalendar.class)){

				result = dataTypeFactory().newXMLGregorianCalendar( GregorianCalendar.from((ZonedDateTime)source)); //naive approach, may mot result in correct representation of partial datetime

			}

		}

		if(result == null){

			throw new MappingException("Converter TestCustomConverter used incorrectly. Arguments passed in were:"

					+ destination + " and " + source);

		}

		return result;

	}

	  /**

	   * Cache the DatatypeFactory because newInstance is very expensive.

	   */

	  private static DatatypeFactory dataTypeFactory;

	/**

	   * Returns a new instance of DatatypeFactory, or the cached one if previously created.

	   *

	   * @return instance of DatatypeFactory

	   */

	  private static DatatypeFactory dataTypeFactory() {

	    if (dataTypeFactory == null) {

	      try {

	        dataTypeFactory = DatatypeFactory.newInstance();

	      } catch (DatatypeConfigurationException e) {

	        throw new MappingException(e);

	      }

	    }

	    return dataTypeFactory;

	  }

}