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Hibernate's core ORM functionality
/*
* 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.internal.util.ReflectHelper;
import org.hibernate.type.descriptor.WrapperOptions;
/**
* Descriptor for {@link Class} handling.
*
* @author Steve Ebersole
*/
public class ClassTypeDescriptor extends AbstractTypeDescriptor {
public static final ClassTypeDescriptor INSTANCE = new ClassTypeDescriptor();
public ClassTypeDescriptor() {
super( Class.class );
}
public String toString(Class value) {
return value.getName();
}
public Class fromString(String string) {
if ( string == null ) {
return null;
}
try {
return ReflectHelper.classForName( string );
}
catch ( ClassNotFoundException e ) {
throw new HibernateException( "Unable to locate named class " + string );
}
}
@SuppressWarnings({ "unchecked" })
public X unwrap(Class value, Class type, WrapperOptions options) {
if ( value == null ) {
return null;
}
if ( Class.class.isAssignableFrom( type ) ) {
return (X) value;
}
if ( String.class.isAssignableFrom( type ) ) {
return (X) toString( value );
}
throw unknownUnwrap( type );
}
public Class wrap(X value, WrapperOptions options) {
if ( value == null ) {
return null;
}
if ( Class.class.isInstance( value ) ) {
return (Class) value;
}
if ( String.class.isInstance( value ) ) {
return fromString( (String)value );
}
throw unknownWrap( value.getClass() );
}
}