org.hibernate.type.descriptor.java.ClassTypeDescriptor 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 org.hibernate.HibernateException;
import org.hibernate.internal.util.ReflectHelper;
import org.hibernate.type.descriptor.WrapperOptions;
/**
* TODO : javadoc
*
* @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() );
}
}