org.hibernate.type.descriptor.java.LocaleTypeDescriptor Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2010, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.type.descriptor.java;
import java.util.Comparator;
import java.util.Locale;
import java.util.StringTokenizer;
import org.hibernate.type.descriptor.WrapperOptions;
/**
* TODO : javadoc
*
* @author Steve Ebersole
*/
public class LocaleTypeDescriptor extends AbstractTypeDescriptor {
public static final LocaleTypeDescriptor INSTANCE = new LocaleTypeDescriptor();
public static class LocaleComparator implements Comparator {
public static final LocaleComparator INSTANCE = new LocaleComparator();
public int compare(Locale o1, Locale o2) {
return o1.toString().compareTo( o2.toString() );
}
}
public LocaleTypeDescriptor() {
super( Locale.class );
}
@Override
public Comparator getComparator() {
return LocaleComparator.INSTANCE;
}
public String toString(Locale value) {
return value.toString();
}
public Locale fromString(String string) {
StringTokenizer tokens = new StringTokenizer( string, "_" );
String language = tokens.hasMoreTokens() ? tokens.nextToken() : "";
String country = tokens.hasMoreTokens() ? tokens.nextToken() : "";
// Need to account for allowable '_' within the variant
String variant = "";
String sep = "";
while ( tokens.hasMoreTokens() ) {
variant += sep + tokens.nextToken();
sep = "_";
}
return new Locale( language, country, variant );
}
@SuppressWarnings({ "unchecked" })
public X unwrap(Locale value, Class type, WrapperOptions options) {
if ( value == null ) {
return null;
}
if ( String.class.isAssignableFrom( type ) ) {
return (X) value.toString();
}
throw unknownUnwrap( type );
}
public Locale wrap(X value, WrapperOptions options) {
if ( value == null ) {
return null;
}
if ( String.class.isInstance( value ) ) {
return fromString( (String) value );
}
throw unknownWrap( value.getClass() );
}
}