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.longs;
021
022 import java.text.DecimalFormat;
023 import java.text.NumberFormat;
024 import java.text.ParseException;
025
026 import org.apache.isis.applib.profiles.Localization;
027 import org.apache.isis.core.commons.config.IsisConfiguration;
028 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
029 import org.apache.isis.core.metamodel.facetapi.Facet;
030 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
031 import org.apache.isis.core.metamodel.facets.object.parseable.TextEntryParseException;
032 import org.apache.isis.core.progmodel.facets.object.value.ValueSemanticsProviderAndFacetAbstract;
033 import org.apache.isis.core.progmodel.facets.object.value.ValueSemanticsProviderContext;
034
035 public abstract class DoubleValueSemanticsProviderAbstract extends ValueSemanticsProviderAndFacetAbstract<Double>
036 implements DoubleFloatingPointValueFacet {
037
038 private static Class<? extends Facet> type() {
039 return DoubleFloatingPointValueFacet.class;
040 }
041
042 private static final Double DEFAULT_VALUE = new Double(0.0d);
043 private static final int TYPICAL_LENGTH = 22;
044 private static final boolean IMMUTABLE = true;
045 private static final boolean EQUAL_BY_CONTENT = true;
046
047 private final NumberFormat format;
048
049 public DoubleValueSemanticsProviderAbstract(final FacetHolder holder, final Class<Double> adaptedClass,
050 final IsisConfiguration configuration, final ValueSemanticsProviderContext context) {
051 super(type(), holder, adaptedClass, TYPICAL_LENGTH, IMMUTABLE, EQUAL_BY_CONTENT, DEFAULT_VALUE, configuration,
052 context);
053 format = determineNumberFormat("value.format.double");
054 }
055
056 // //////////////////////////////////////////////////////////////////
057 // Parser
058 // //////////////////////////////////////////////////////////////////
059
060 @Override
061 protected Double doParse(final Object context, final String entry) {
062 try {
063 return new Double(format.parse(entry).doubleValue());
064 } catch (final ParseException e) {
065 throw new TextEntryParseException("Not floating point number " + entry, e);
066 }
067 }
068
069 // ///////////////////////////////////////////////////////////////////////////
070 // TitleProvider
071 // ///////////////////////////////////////////////////////////////////////////
072
073 @Override
074 public String titleString(final Object value, final Localization localization) {
075 return titleString(format, value);
076 }
077
078 @Override
079 public String titleStringWithMask(final Object value, final String usingMask) {
080 return titleString(new DecimalFormat(usingMask), value);
081 }
082
083 // //////////////////////////////////////////////////////////////////
084 // EncoderDecoder
085 // //////////////////////////////////////////////////////////////////
086
087 @Override
088 protected String doEncode(final Object object) {
089 return object.toString();
090 }
091
092 @Override
093 protected Double doRestore(final String data) {
094 return new Double(data);
095 }
096
097 // //////////////////////////////////////////////////////////////////
098 // DoubleValueFacet
099 // //////////////////////////////////////////////////////////////////
100
101 @Override
102 public Double doubleValue(final ObjectAdapter object) {
103 return (Double) (object == null ? null : object.getObject());
104 }
105
106 @Override
107 public ObjectAdapter createValue(final Double value) {
108 return getAdapterMap().adapterFor(value);
109 }
110
111 // /////// toString ///////
112 @Override
113 public String toString() {
114 return "DoubleValueSemanticsProvider: " + format;
115 }
116
117 }