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.chars;
021
022 import java.text.DecimalFormat;
023
024 import org.apache.isis.applib.profiles.Localization;
025 import org.apache.isis.core.commons.config.IsisConfiguration;
026 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
027 import org.apache.isis.core.metamodel.facetapi.Facet;
028 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
029 import org.apache.isis.core.metamodel.facets.object.parseable.InvalidEntryException;
030 import org.apache.isis.core.progmodel.facets.object.value.ValueSemanticsProviderAndFacetAbstract;
031 import org.apache.isis.core.progmodel.facets.object.value.ValueSemanticsProviderContext;
032
033 public abstract class CharValueSemanticsProviderAbstract extends ValueSemanticsProviderAndFacetAbstract<Character>
034 implements CharValueFacet {
035
036 private static Class<? extends Facet> type() {
037 return CharValueFacet.class;
038 }
039
040 private static final Character DEFAULT_VALUE = Character.valueOf((char) 0);
041 private static final boolean IMMUTABLE = true;
042 private static final boolean EQUAL_BY_CONTENT = true;
043 private static final int TYPICAL_LENGTH = 1;
044
045 public CharValueSemanticsProviderAbstract(final FacetHolder holder, final Class<Character> adaptedClass,
046 final IsisConfiguration configuration, final ValueSemanticsProviderContext context) {
047 super(type(), holder, adaptedClass, TYPICAL_LENGTH, IMMUTABLE, EQUAL_BY_CONTENT, DEFAULT_VALUE, configuration,
048 context);
049 }
050
051 // //////////////////////////////////////////////////////////////////
052 // Parser
053 // //////////////////////////////////////////////////////////////////
054
055 @Override
056 public Character doParse(final Object context, final String entry) {
057 if (entry.length() > 1) {
058 throw new InvalidEntryException("Only a single character is required");
059 } else {
060 return Character.valueOf(entry.charAt(0));
061 }
062 }
063
064 @Override
065 public String titleString(final Object value, final Localization localization) {
066 return value == null ? "" : value.toString();
067 }
068
069 @Override
070 public String titleStringWithMask(final Object value, final String usingMask) {
071 return titleString(new DecimalFormat(usingMask), value);
072 }
073
074 // //////////////////////////////////////////////////////////////////
075 // EncoderDecoder
076 // //////////////////////////////////////////////////////////////////
077
078 @Override
079 protected String doEncode(final Object object) {
080 return object.toString();
081 }
082
083 @Override
084 protected Character doRestore(final String data) {
085 return Character.valueOf(data.charAt(0));
086 }
087
088 // //////////////////////////////////////////////////////////////////
089 // CharValueFacet
090 // //////////////////////////////////////////////////////////////////
091
092 @Override
093 public Character charValue(final ObjectAdapter object) {
094 return object == null ? null : (Character) object.getObject();
095 }
096
097 @Override
098 public ObjectAdapter createValue(final Character value) {
099 return getAdapterMap().adapterFor(value);
100 }
101
102 // /////// toString ///////
103
104 @Override
105 public String toString() {
106 return "CharacterValueSemanticsProvider";
107 }
108
109 }