org.hibernate.bytecode.javassist.BytecodeProviderImpl Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, Red Hat Middleware LLC 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 Middleware LLC.
*
* 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.bytecode.javassist;
import java.lang.reflect.Modifier;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.hibernate.bytecode.BytecodeProvider;
import org.hibernate.bytecode.ClassTransformer;
import org.hibernate.bytecode.ProxyFactoryFactory;
import org.hibernate.bytecode.ReflectionOptimizer;
import org.hibernate.bytecode.util.ClassFilter;
import org.hibernate.bytecode.util.FieldFilter;
import org.hibernate.util.StringHelper;
/**
* Bytecode provider implementation for Javassist.
*
* @author Steve Ebersole
*/
public class BytecodeProviderImpl implements BytecodeProvider {
private static final Logger log = LoggerFactory.getLogger( BytecodeProviderImpl.class );
public ProxyFactoryFactory getProxyFactoryFactory() {
return new ProxyFactoryFactoryImpl();
}
public ReflectionOptimizer getReflectionOptimizer(
Class clazz,
String[] getterNames,
String[] setterNames,
Class[] types) {
FastClass fastClass;
BulkAccessor bulkAccessor;
try {
fastClass = FastClass.create( clazz );
bulkAccessor = BulkAccessor.create( clazz, getterNames, setterNames, types );
if ( !clazz.isInterface() && !Modifier.isAbstract( clazz.getModifiers() ) ) {
if ( fastClass == null ) {
bulkAccessor = null;
}
else {
//test out the optimizer:
Object instance = fastClass.newInstance();
bulkAccessor.setPropertyValues( instance, bulkAccessor.getPropertyValues( instance ) );
}
}
}
catch ( Throwable t ) {
fastClass = null;
bulkAccessor = null;
String message = "reflection optimizer disabled for: " +
clazz.getName() +
" [" +
StringHelper.unqualify( t.getClass().getName() ) +
": " +
t.getMessage();
if ( t instanceof BulkAccessorException ) {
int index = ( ( BulkAccessorException ) t ).getIndex();
if ( index >= 0 ) {
message += " (property " + setterNames[index] + ")";
}
}
log.debug( message );
}
if ( fastClass != null && bulkAccessor != null ) {
return new ReflectionOptimizerImpl(
new InstantiationOptimizerAdapter( fastClass ),
new AccessOptimizerAdapter( bulkAccessor, clazz )
);
}
else {
return null;
}
}
public ClassTransformer getTransformer(ClassFilter classFilter, FieldFilter fieldFilter) {
return new JavassistClassTransformer( classFilter, fieldFilter );
}
}