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.biginteger;
021
022import java.math.BigInteger;
023import java.text.DecimalFormat;
024import java.text.NumberFormat;
025
026import org.apache.isis.applib.adapters.EncoderDecoder;
027import org.apache.isis.applib.adapters.Parser;
028import org.apache.isis.applib.profiles.Localization;
029import org.apache.isis.core.commons.config.IsisConfiguration;
030import org.apache.isis.core.metamodel.facetapi.Facet;
031import org.apache.isis.core.metamodel.facetapi.FacetHolder;
032import org.apache.isis.core.metamodel.facets.object.parseable.TextEntryParseException;
033import org.apache.isis.core.progmodel.facets.object.value.ValueSemanticsProviderAndFacetAbstract;
034import org.apache.isis.core.progmodel.facets.object.value.ValueSemanticsProviderContext;
035
036public class BigIntegerValueSemanticsProvider extends ValueSemanticsProviderAndFacetAbstract<BigInteger> implements BigIntegerValueFacet {
037
038    private static final int TYPICAL_LENGTH = 10;
039
040    private static Class<? extends Facet> type() {
041        return BigIntegerValueFacet.class;
042    }
043
044    private static final BigInteger DEFAULT_VALUE = BigInteger.valueOf(0);
045
046    private final NumberFormat format;
047
048    /**
049     * Required because implementation of {@link Parser} and
050     * {@link EncoderDecoder}.
051     */
052    public BigIntegerValueSemanticsProvider() {
053        this(null, null, null);
054    }
055
056    public BigIntegerValueSemanticsProvider(final FacetHolder holder, final IsisConfiguration configuration, final ValueSemanticsProviderContext context) {
057
058        super(type(), holder, BigInteger.class, TYPICAL_LENGTH, Immutability.IMMUTABLE, EqualByContent.HONOURED, DEFAULT_VALUE, configuration, context);
059        format = determineNumberFormat("value.format.int");
060    }
061
062    // //////////////////////////////////////////////////////////////////
063    // Parser
064    // //////////////////////////////////////////////////////////////////
065
066    @Override
067    protected BigInteger doParse(final Object context, final String entry) {
068        try {
069            return new BigInteger(entry);
070        } catch (final NumberFormatException e) {
071            throw new TextEntryParseException("Not an integer " + entry, e);
072        }
073    }
074
075    @Override
076    public String titleString(final Object object, final Localization localization) {
077        return titleString(format, object);
078    }
079
080    @Override
081    public String titleStringWithMask(final Object value, final String usingMask) {
082        return titleString(new DecimalFormat(usingMask), value);
083    }
084
085    // //////////////////////////////////////////////////////////////////
086    // EncoderDecoder
087    // //////////////////////////////////////////////////////////////////
088
089    @Override
090    protected String doEncode(final Object object) {
091        return object.toString();
092    }
093
094    @Override
095    protected BigInteger doRestore(final String data) {
096        return new BigInteger(data);
097    }
098
099    // /////// toString ///////
100
101    @Override
102    public String toString() {
103        return "BigIntegerValueSemanticsProvider: " + format;
104    }
105
106}