Package org.apache.isis.core.metamodel.facets.value.timestamp

Source Code of org.apache.isis.core.metamodel.facets.value.timestamp.TimeStampValueSemanticsProvider

/*
*  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
*  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 org.apache.isis.core.metamodel.facets.value.timestamp;

import java.text.DateFormat;
import java.util.Date;
import java.util.Map;

import com.google.common.collect.Maps;

import org.apache.isis.applib.adapters.EncoderDecoder;
import org.apache.isis.applib.adapters.Parser;
import org.apache.isis.applib.value.TimeStamp;
import org.apache.isis.core.commons.config.IsisConfiguration;
import org.apache.isis.core.metamodel.facetapi.FacetHolder;
import org.apache.isis.core.metamodel.facets.object.parseable.InvalidEntryException;
import org.apache.isis.core.metamodel.facets.properties.defaults.PropertyDefaultFacet;
import org.apache.isis.core.metamodel.facets.object.value.vsp.ValueSemanticsProviderContext;

public class TimeStampValueSemanticsProvider extends TimeStampValueSemanticsProviderAbstract<TimeStamp> {

    public static final boolean isAPropertyDefaultFacet() {
        return PropertyDefaultFacet.class.isAssignableFrom(TimeStampValueSemanticsProvider.class);
    }

    private static Map<String, DateFormat> formats = Maps.newHashMap();

    static {
        initFormats(formats);
    }

    /**
     * Required because implementation of {@link Parser} and
     * {@link EncoderDecoder}.
     */
    public TimeStampValueSemanticsProvider() {
        this(null, null, null);
    }

    public TimeStampValueSemanticsProvider(final FacetHolder holder, final IsisConfiguration configuration, final ValueSemanticsProviderContext context) {
        super(holder, TimeStamp.class, configuration, context);
    }

    // //////////////////////////////////////////////////////////////////
    // temporal-specific stuff
    // //////////////////////////////////////////////////////////////////

    @Override
    protected Date dateValue(final Object value) {
        return new Date(((TimeStamp) value).longValue());
    }

    @Override
    protected Map<String, DateFormat> formats() {
        return formats;
    }

    @Override
    protected TimeStamp now() {
        throw new InvalidEntryException("Can't change a timestamp.");
    }

    @Override
    protected TimeStamp setDate(final Date date) {
        return new TimeStamp(date.getTime());
    }

}
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