package org.hibernate.bytecode.cglib;
import java.lang.reflect.Modifier;
import net.sf.cglib.beans.BulkBean;
import net.sf.cglib.beans.BulkBeanException;
import net.sf.cglib.reflect.FastClass;
import net.sf.cglib.transform.ClassFilter;
import net.sf.cglib.transform.ClassTransformer;
import net.sf.cglib.transform.ClassTransformerFactory;
import net.sf.cglib.transform.TransformingClassLoader;
import net.sf.cglib.transform.impl.InterceptFieldFilter;
import net.sf.cglib.transform.impl.InterceptFieldTransformer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.hibernate.bytecode.BytecodeProvider;
import org.hibernate.bytecode.ProxyFactoryFactory;
import org.hibernate.bytecode.ReflectionOptimizer;
import org.hibernate.bytecode.util.FieldFilter;
import org.hibernate.util.StringHelper;
import org.objectweb.asm.Type;
/**
* Bytecode provider implementation for CGLIB.
*
* @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;
BulkBean bulkBean;
try {
fastClass = FastClass.create( clazz );
bulkBean = BulkBean.create( clazz, getterNames, setterNames, types );
if ( !clazz.isInterface() && !Modifier.isAbstract( clazz.getModifiers() ) ) {
if ( fastClass == null ) {
bulkBean = null;
}
else {
//test out the optimizer:
Object instance = fastClass.newInstance();
bulkBean.setPropertyValues( instance, bulkBean.getPropertyValues( instance ) );
}
}
}
catch( Throwable t ) {
fastClass = null;
bulkBean = null;
String message = "reflection optimizer disabled for: " +
clazz.getName() +
" [" +
StringHelper.unqualify( t.getClass().getName() ) +
": " +
t.getMessage();
if (t instanceof BulkBeanException ) {
int index = ( (BulkBeanException) t ).getIndex();
if (index >= 0) {
message += " (property " + setterNames[index] + ")";
}
}
log.debug( message );
}
if ( fastClass != null && bulkBean != null ) {
return new ReflectionOptimizerImpl(
new InstantiationOptimizerAdapter( fastClass ),
new AccessOptimizerAdapter( bulkBean, clazz )
);
}
else {
return null;
}
}
public org.hibernate.bytecode.ClassTransformer getTransformer(org.hibernate.bytecode.util.ClassFilter classFilter, FieldFilter fieldFilter) {
return new CglibClassTransformer( classFilter, fieldFilter );
}
}