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
020package org.apache.isis.core.progmodel.facets.value.longs;
021
022import java.text.DecimalFormat;
023import java.text.NumberFormat;
024import java.text.ParseException;
025
026import org.apache.isis.applib.profiles.Localization;
027import org.apache.isis.core.commons.config.IsisConfiguration;
028import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
029import org.apache.isis.core.metamodel.facetapi.Facet;
030import org.apache.isis.core.metamodel.facetapi.FacetHolder;
031import org.apache.isis.core.metamodel.facets.object.parseable.TextEntryParseException;
032import org.apache.isis.core.progmodel.facets.object.value.ValueSemanticsProviderAndFacetAbstract;
033import org.apache.isis.core.progmodel.facets.object.value.ValueSemanticsProviderContext;
034
035public abstract class DoubleValueSemanticsProviderAbstract extends ValueSemanticsProviderAndFacetAbstract<Double> implements DoubleFloatingPointValueFacet {
036
037    private static Class<? extends Facet> type() {
038        return DoubleFloatingPointValueFacet.class;
039    }
040
041    private static final Double DEFAULT_VALUE = new Double(0.0d);
042    private static final int TYPICAL_LENGTH = 10;
043
044    private final NumberFormat format;
045
046    public DoubleValueSemanticsProviderAbstract(final FacetHolder holder, final Class<Double> adaptedClass, final IsisConfiguration configuration, final ValueSemanticsProviderContext context) {
047        super(type(), holder, adaptedClass, TYPICAL_LENGTH, Immutability.IMMUTABLE, EqualByContent.HONOURED, DEFAULT_VALUE, configuration, context);
048        format = determineNumberFormat("value.format.double");
049    }
050
051    // //////////////////////////////////////////////////////////////////
052    // Parser
053    // //////////////////////////////////////////////////////////////////
054
055    @Override
056    protected Double doParse(final Object context, final String entry) {
057        try {
058            return new Double(format.parse(entry).doubleValue());
059        } catch (final ParseException e) {
060            throw new TextEntryParseException("Not floating point number " + entry, e);
061        }
062    }
063
064    // ///////////////////////////////////////////////////////////////////////////
065    // TitleProvider
066    // ///////////////////////////////////////////////////////////////////////////
067
068    @Override
069    public String titleString(final Object value, final Localization localization) {
070        return titleString(format, value);
071    }
072
073    @Override
074    public String titleStringWithMask(final Object value, final String usingMask) {
075        return titleString(new DecimalFormat(usingMask), value);
076    }
077
078    // //////////////////////////////////////////////////////////////////
079    // EncoderDecoder
080    // //////////////////////////////////////////////////////////////////
081
082    @Override
083    protected String doEncode(final Object object) {
084        return object.toString();
085    }
086
087    @Override
088    protected Double doRestore(final String data) {
089        return new Double(data);
090    }
091
092    // //////////////////////////////////////////////////////////////////
093    // DoubleValueFacet
094    // //////////////////////////////////////////////////////////////////
095
096    @Override
097    public Double doubleValue(final ObjectAdapter object) {
098        return (Double) (object == null ? null : object.getObject());
099    }
100
101    @Override
102    public ObjectAdapter createValue(final Double value) {
103        return getAdapterManager().adapterFor(value);
104    }
105
106    // /////// toString ///////
107    @Override
108    public String toString() {
109        return "DoubleValueSemanticsProvider: " + format;
110    }
111
112}