001    /*
002     *  Licensed to the Apache Software Foundation (ASF) under one
003     *  or more contributor license agreements.  See the NOTICE file
004     *  distributed with this work for additional information
005     *  regarding copyright ownership.  The ASF licenses this file
006     *  to you under the Apache License, Version 2.0 (the
007     *  "License"); you may not use this file except in compliance
008     *  with the License.  You may obtain a copy of the License at
009     *
010     *        http://www.apache.org/licenses/LICENSE-2.0
011     *
012     *  Unless required by applicable law or agreed to in writing,
013     *  software distributed under the License is distributed on an
014     *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     *  KIND, either express or implied.  See the License for the
016     *  specific language governing permissions and limitations
017     *  under the License.
018     */
019    
020    package org.apache.isis.core.progmodel.facets.value.datetime;
021    
022    import java.util.Date;
023    
024    import org.apache.isis.applib.adapters.EncoderDecoder;
025    import org.apache.isis.applib.adapters.Parser;
026    import org.apache.isis.applib.value.DateTime;
027    import org.apache.isis.core.commons.config.IsisConfiguration;
028    import org.apache.isis.core.metamodel.facetapi.FacetHolder;
029    import org.apache.isis.core.progmodel.facets.object.value.ValueSemanticsProviderContext;
030    import org.apache.isis.core.progmodel.facets.value.DateAndTimeValueSemanticsProviderAbstract;
031    
032    public class DateTimeValueSemanticsProvider extends DateAndTimeValueSemanticsProviderAbstract<DateTime> {
033        private static final boolean IMMUTABLE = false;
034        private static final boolean EQUAL_BY_CONTENT = false;
035    
036        /**
037         * Required because implementation of {@link Parser} and {@link EncoderDecoder}.
038         */
039        public DateTimeValueSemanticsProvider() {
040            this(null, null, null);
041        }
042    
043        public DateTimeValueSemanticsProvider(final FacetHolder holder, final IsisConfiguration configuration,
044            final ValueSemanticsProviderContext context) {
045            super(holder, DateTime.class, IMMUTABLE, EQUAL_BY_CONTENT, configuration, context);
046        }
047    
048        @Override
049        protected Date dateValue(final Object value) {
050            final DateTime date = (DateTime) value;
051            return date == null ? null : date.dateValue();
052        }
053    
054        @Override
055        protected DateTime add(final DateTime original, final int years, final int months, final int days, final int hours,
056            final int minutes) {
057            DateTime date = original;
058            date = date.add(years, months, days, hours, minutes);
059            return date;
060        }
061    
062        @Override
063        protected DateTime now() {
064            return new DateTime();
065        }
066    
067        @Override
068        protected DateTime setDate(final Date date) {
069            return new DateTime(date);
070        }
071    
072    }