/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.isis.core.metamodel.facets.value.bigdecimal;
import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.Locale;
import org.apache.isis.applib.adapters.EncoderDecoder;
import org.apache.isis.applib.adapters.Parser;
import org.apache.isis.core.commons.exceptions.IsisException;
import org.apache.isis.core.metamodel.facetapi.Facet;
import org.apache.isis.core.metamodel.facetapi.FacetHolder;
import org.apache.isis.core.metamodel.facets.object.parseable.TextEntryParseException;
import org.apache.isis.core.metamodel.facets.object.value.vsp.ValueSemanticsProviderAndFacetAbstract;
import org.apache.isis.core.metamodel.services.ServicesInjector;
public class BigDecimalValueSemanticsProvider extends ValueSemanticsProviderAndFacetAbstract<BigDecimal> implements BigDecimalValueFacet {
private static Class<? extends Facet> type() {
return BigDecimalValueFacet.class;
}
private static final int TYPICAL_LENGTH = 10;
private static final BigDecimal DEFAULT_VALUE = new BigDecimal(0);
public static final int DEFAULT_LENGTH = 18;
public static final int DEFAULT_SCALE = 2;
private final NumberFormat format;
/**
* Required because implementation of {@link Parser} and
* {@link EncoderDecoder}.
*/
public BigDecimalValueSemanticsProvider() {
this(null, null);
}
public BigDecimalValueSemanticsProvider(final FacetHolder holder, final ServicesInjector context) {
super(type(), holder, BigDecimal.class, TYPICAL_LENGTH, null, Immutability.IMMUTABLE, EqualByContent.HONOURED, DEFAULT_VALUE, context);
format = determineNumberFormat("value.format.decimal");
}
public void setLocale(final Locale l) {
}
// //////////////////////////////////////////////////////////////////
// Parser
// //////////////////////////////////////////////////////////////////
@Deprecated
@Override
public Integer getLength() {
return getPrecision();
}
@Override
public Integer getPrecision() {
return DEFAULT_LENGTH;
}
@Override
public Integer getScale() {
return DEFAULT_SCALE;
}
// //////////////////////////////////////////////////////////////////
// Parser
// //////////////////////////////////////////////////////////////////
@Override
protected BigDecimal doParse(final Object context, final String entry) {
try {
return new BigDecimal(entry);
} catch (final NumberFormatException e) {
throw new TextEntryParseException("Not an decimal " + entry, e);
}
}
@Override
public String titleString(final Object object) {
return titleString(format, object);
}
@Override
public String titleStringWithMask(final Object value, final String usingMask) {
return titleString(new DecimalFormat(usingMask), value);
}
// //////////////////////////////////////////////////////////////////
// EncoderDecoder
// //////////////////////////////////////////////////////////////////
@Override
protected String doEncode(final Object object) {
// for dotnet compatibility - toString pre 1.3 was equivalent to
// toPlainString later.
try {
final Class<?> type = object.getClass();
try {
return (String) type.getMethod("toPlainString", (Class[]) null).invoke(object, (Object[]) null);
} catch (final NoSuchMethodException nsm) {
return (String) type.getMethod("toString", (Class[]) null).invoke(object, (Object[]) null);
}
} catch (final Exception e) {
throw new IsisException(e);
}
}
@Override
protected BigDecimal doRestore(final String data) {
return new BigDecimal(data);
}
// /////// toString ///////
@Override
public String toString() {
return "BigDecimalValueSemanticsProvider: " + format;
}
}