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.bytes;
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 ByteValueSemanticsProviderAbstract extends ValueSemanticsProviderAndFacetAbstract<Byte> implements
036 ByteValueFacet {
037
038 private static Class<? extends Facet> type() {
039 return ByteValueFacet.class;
040 }
041
042 private static final Byte DEFAULT_VALUE = Byte.valueOf((byte) 0);
043
044 private static final int TYPICAL_LENGTH = 4;
045 private static final boolean IMMUTABLE = true;
046 private static final boolean EQUAL_BY_CONTENT = true;
047
048 private final NumberFormat format;
049
050 public ByteValueSemanticsProviderAbstract(final FacetHolder holder, final Class<Byte> adaptedClass,
051 final IsisConfiguration configuration, final ValueSemanticsProviderContext context) {
052 super(type(), holder, adaptedClass, TYPICAL_LENGTH, IMMUTABLE, EQUAL_BY_CONTENT, DEFAULT_VALUE, configuration,
053 context);
054 format = determineNumberFormat("value.format.byte");
055 }
056
057 // //////////////////////////////////////////////////////////////////
058 // Parser
059 // //////////////////////////////////////////////////////////////////
060
061 @Override
062 protected Byte doParse(final Object context, final String entry) {
063 try {
064 return Byte.valueOf(format.parse(entry).byteValue());
065 } catch (final ParseException e) {
066 throw new TextEntryParseException("Not a number " + entry, e);
067 }
068 }
069
070 @Override
071 public String titleString(final Object value, final Localization localization) {
072 return titleString(format, value);
073 }
074
075 // //////////////////////////////////////////////////////////////////
076 // EncoderDecoder
077 // //////////////////////////////////////////////////////////////////
078
079 @Override
080 public String doEncode(final Object object) {
081 return object.toString();
082 }
083
084 @Override
085 protected Byte doRestore(final String data) {
086 return new Byte(data);
087 }
088
089 @Override
090 public String titleStringWithMask(final Object value, final String usingMask) {
091 return titleString(new DecimalFormat(usingMask), value);
092 }
093
094 // //////////////////////////////////////////////////////////////////
095 // ByteValueFacet
096 // //////////////////////////////////////////////////////////////////
097
098 @Override
099 public Byte byteValue(final ObjectAdapter object) {
100 return (Byte) object.getObject();
101 }
102
103 @Override
104 public ObjectAdapter createValue(final Byte value) {
105 return getAdapterMap().adapterFor(value);
106 }
107
108 // ///// toString ///////
109
110 @Override
111 public String toString() {
112 return "ByteValueSemanticsProvider: " + format;
113 }
114
115 }