org.hibernate.type.descriptor.java.CharacterTypeDescriptor Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate.type.descriptor.java;
import org.hibernate.HibernateException;
import org.hibernate.type.descriptor.WrapperOptions;
/**
* Descriptor for {@link Character} handling.
*
* @author Steve Ebersole
*/
public class CharacterTypeDescriptor extends AbstractTypeDescriptor {
public static final CharacterTypeDescriptor INSTANCE = new CharacterTypeDescriptor();
public CharacterTypeDescriptor() {
super( Character.class );
}
@Override
public String toString(Character value) {
return value.toString();
}
@Override
public Character fromString(String string) {
if ( string.length() != 1 ) {
throw new HibernateException( "multiple or zero characters found parsing string" );
}
return string.charAt( 0 );
}
@SuppressWarnings({ "unchecked" })
@Override
public X unwrap(Character value, Class type, WrapperOptions options) {
if ( value == null ) {
return null;
}
if ( Character.class.isAssignableFrom( type ) ) {
return (X) value;
}
if ( String.class.isAssignableFrom( type ) ) {
return (X) value.toString();
}
if ( Number.class.isAssignableFrom( type ) ) {
return (X) Short.valueOf( (short)value.charValue() );
}
throw unknownUnwrap( type );
}
@Override
public Character wrap(X value, WrapperOptions options) {
if ( value == null ) {
return null;
}
if ( Character.class.isInstance( value ) ) {
return (Character) value;
}
if ( String.class.isInstance( value ) ) {
final String str = (String) value;
return str.charAt( 0 );
}
if ( Number.class.isInstance( value ) ) {
final Number nbr = (Number) value;
return (char) nbr.shortValue();
}
throw unknownWrap( value.getClass() );
}
}