org.nakedobjects.metamodel.value.IntValueSemanticsProviderAbstract Maven / Gradle / Ivy
package org.nakedobjects.metamodel.value;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.text.ParseException;
import org.nakedobjects.metamodel.adapter.NakedObject;
import org.nakedobjects.metamodel.adapter.TextEntryParseException;
import org.nakedobjects.metamodel.config.NakedObjectConfiguration;
import org.nakedobjects.metamodel.facets.Facet;
import org.nakedobjects.metamodel.facets.FacetHolder;
import org.nakedobjects.metamodel.facets.value.IntegerValueFacet;
import org.nakedobjects.metamodel.runtimecontext.RuntimeContext;
import org.nakedobjects.metamodel.specloader.SpecificationLoader;
public abstract class IntValueSemanticsProviderAbstract extends ValueSemanticsProviderAbstract implements IntegerValueFacet {
public static Class type() {
return IntegerValueFacet.class;
}
private static final int TYPICAL_LENGTH = 9;
private static final boolean IMMUTABLE = true;
private static final boolean EQUAL_BY_CONTENT = true;
private final NumberFormat format;
public IntValueSemanticsProviderAbstract(
final FacetHolder holder, final Class adaptedClass, final Object defaultValue,
final NakedObjectConfiguration configuration,
final SpecificationLoader specificationLoader,
final RuntimeContext runtimeContext) {
super(type(), holder, adaptedClass, TYPICAL_LENGTH, IMMUTABLE, EQUAL_BY_CONTENT, defaultValue, configuration, specificationLoader, runtimeContext);
format = determineNumberFormat("value.format.int");
}
// //////////////////////////////////////////////////////////////////
// Parser
// //////////////////////////////////////////////////////////////////
@Override
protected Object doParse(final Object original, final String entry) {
try {
return new Integer(format.parse(entry).intValue());
} catch (final ParseException e) {
throw new TextEntryParseException("Not an whole number " + entry, e);
}
}
@Override
public String titleString(final Object value) {
return titleString(format, value);
}
public String titleWithMask(final String mask, final Object value) {
return titleString(new DecimalFormat(mask), value);
}
// //////////////////////////////////////////////////////////////////
// EncoderDecoder
// //////////////////////////////////////////////////////////////////
@Override
protected String doEncode(final Object object) {
return object.toString();
}
@Override
protected Object doRestore(final String data) {
return new Integer(data);
}
// //////////////////////////////////////////////////////////////////
// IntegerValueFacet
// //////////////////////////////////////////////////////////////////
public Integer integerValue(final NakedObject object) {
return (Integer) (object == null ? null : object.getObject());
}
public NakedObject createValue(final Integer value) {
return value == null ? null : getRuntimeContext().adapterFor(value);
}
// /////// toString ///////
@Override
public String toString() {
return "IntAdapter: " + format;
}
}
// Copyright (c) Naked Objects Group Ltd.