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/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008-2011, 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.bytecode.internal.javassist;
import java.lang.reflect.Modifier;
import java.util.Set;
import org.jboss.logging.Logger;
import org.hibernate.bytecode.buildtime.spi.ClassFilter;
import org.hibernate.bytecode.buildtime.spi.FieldFilter;
import org.hibernate.bytecode.instrumentation.internal.javassist.JavassistHelper;
import org.hibernate.bytecode.instrumentation.spi.FieldInterceptor;
import org.hibernate.bytecode.spi.BytecodeProvider;
import org.hibernate.bytecode.spi.ClassTransformer;
import org.hibernate.bytecode.spi.EntityInstrumentationMetadata;
import org.hibernate.bytecode.spi.NotInstrumentedException;
import org.hibernate.bytecode.spi.ProxyFactoryFactory;
import org.hibernate.bytecode.spi.ReflectionOptimizer;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.internal.CoreMessageLogger;
import org.hibernate.internal.util.StringHelper;
/**
* Bytecode provider implementation for Javassist.
*
* @author Steve Ebersole
*/
public class BytecodeProviderImpl implements BytecodeProvider {
private static final CoreMessageLogger LOG = Logger.getMessageLogger(CoreMessageLogger.class, BytecodeProviderImpl.class.getName());
@Override
public ProxyFactoryFactory getProxyFactoryFactory() {
return new ProxyFactoryFactoryImpl();
}
@Override
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;
if (LOG.isDebugEnabled()) {
int index = 0;
if (t instanceof BulkAccessorException) index = ((BulkAccessorException)t).getIndex();
if (index >= 0) LOG.debugf("Reflection optimizer disabled for: %s [%s: %s (property %s)",
clazz.getName(),
StringHelper.unqualify(t.getClass().getName()),
t.getMessage(),
setterNames[index]);
else LOG.debugf("Reflection optimizer disabled for: %s [%s: %s",
clazz.getName(),
StringHelper.unqualify(t.getClass().getName()),
t.getMessage());
}
}
if ( fastClass != null && bulkAccessor != null ) {
return new ReflectionOptimizerImpl(
new InstantiationOptimizerAdapter( fastClass ),
new AccessOptimizerAdapter( bulkAccessor, clazz )
);
}
return null;
}
@Override
public ClassTransformer getTransformer(ClassFilter classFilter, FieldFilter fieldFilter) {
return new JavassistClassTransformer( classFilter, fieldFilter );
}
@Override
public EntityInstrumentationMetadata getEntityInstrumentationMetadata(Class entityClass) {
return new EntityInstrumentationMetadataImpl( entityClass );
}
private class EntityInstrumentationMetadataImpl implements EntityInstrumentationMetadata {
private final Class entityClass;
private final boolean isInstrumented;
private EntityInstrumentationMetadataImpl(Class entityClass) {
this.entityClass = entityClass;
this.isInstrumented = FieldHandled.class.isAssignableFrom( entityClass );
}
@Override
public String getEntityName() {
return entityClass.getName();
}
@Override
public boolean isInstrumented() {
return isInstrumented;
}
@Override
public FieldInterceptor extractInterceptor(Object entity) throws NotInstrumentedException {
if ( !entityClass.isInstance( entity ) ) {
throw new IllegalArgumentException(
String.format(
"Passed entity instance [%s] is not of expected type [%s]",
entity,
getEntityName()
)
);
}
if ( ! isInstrumented() ) {
throw new NotInstrumentedException( String.format( "Entity class [%s] is not instrumented", getEntityName() ) );
}
return JavassistHelper.extractFieldInterceptor( entity );
}
@Override
public FieldInterceptor injectInterceptor(
Object entity,
String entityName,
Set uninitializedFieldNames,
SessionImplementor session) throws NotInstrumentedException {
if ( !entityClass.isInstance( entity ) ) {
throw new IllegalArgumentException(
String.format(
"Passed entity instance [%s] is not of expected type [%s]",
entity,
getEntityName()
)
);
}
if ( ! isInstrumented() ) {
throw new NotInstrumentedException( String.format( "Entity class [%s] is not instrumented", getEntityName() ) );
}
return JavassistHelper.injectFieldInterceptor( entity, entityName, uninitializedFieldNames, session );
}
}
}
