001// ***************************************************************************************************************************
002// * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.  See the NOTICE file *
003// * distributed with this work for additional information regarding copyright ownership.  The ASF licenses this file        *
004// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance            *
005// * with the License.  You may obtain a copy of the License at                                                              *
006// *                                                                                                                         *
007// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
008// *                                                                                                                         *
009// * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an  *
010// * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the License for the        *
011// * specific language governing permissions and limitations under the License.                                              *
012// ***************************************************************************************************************************
013package org.apache.juneau.transforms;
014
015import static org.apache.juneau.internal.StringUtils.*;
016
017import javax.xml.datatype.*;
018
019import org.apache.juneau.*;
020import org.apache.juneau.transform.*;
021
022/**
023 * Transforms {@link XMLGregorianCalendar XMLGregorianCalendars} to ISO8601 date-time {@link String Strings}.
024 *
025 * <p>
026 * Objects are converted to strings using {@link XMLGregorianCalendar#toXMLFormat()}.
027 *
028 * <p>
029 * Strings are converted to objects using {@link DatatypeFactory#newXMLGregorianCalendar(String)}.
030 */
031public class XMLGregorianCalendarSwap extends StringSwap<XMLGregorianCalendar> {
032
033   private DatatypeFactory dtf;
034
035   /**
036    * Constructor.
037    */
038   public XMLGregorianCalendarSwap() {
039      try {
040         this.dtf = DatatypeFactory.newInstance();
041      } catch (DatatypeConfigurationException e) {
042         throw new RuntimeException(e);
043      }
044   }
045
046   /**
047    * Converts the specified <code>XMLGregorianCalendar</code> to a {@link String}.
048    */
049   @Override /* PojoSwap */
050   public String swap(BeanSession session, XMLGregorianCalendar b) throws Exception {
051      return b.toXMLFormat();
052   }
053
054   /**
055    * Converts the specified {@link String} to an <code>XMLGregorianCalendar</code>.
056    */
057   @Override /* PojoSwap */
058   public XMLGregorianCalendar unswap(BeanSession session, String s, ClassMeta<?> hint) throws Exception {
059      if (isEmpty(s))
060         return null;
061      return dtf.newXMLGregorianCalendar(s);
062   }
063}