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org.hibernate.tuple.entity.PojoEntityTuplizer 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.tuple.entity;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.hibernate.EntityMode;
import org.hibernate.HibernateException;
import org.hibernate.MappingException;
import org.hibernate.EntityNameResolver;
import org.hibernate.tuple.Instantiator;
import org.hibernate.tuple.PojoInstantiator;
import org.hibernate.bytecode.ReflectionOptimizer;
import org.hibernate.cfg.Environment;
import org.hibernate.classic.Lifecycle;
import org.hibernate.classic.Validatable;
import org.hibernate.engine.SessionImplementor;
import org.hibernate.engine.SessionFactoryImplementor;
import org.hibernate.intercept.FieldInterceptor;
import org.hibernate.intercept.FieldInterceptionHelper;
import org.hibernate.mapping.PersistentClass;
import org.hibernate.mapping.Property;
import org.hibernate.mapping.Subclass;
import org.hibernate.property.Getter;
import org.hibernate.property.Setter;
import org.hibernate.proxy.HibernateProxy;
import org.hibernate.proxy.ProxyFactory;
import org.hibernate.type.AbstractComponentType;
import org.hibernate.util.ReflectHelper;
/**
* An {@link EntityTuplizer} specific to the pojo entity mode.
*
* @author Steve Ebersole
* @author Gavin King
*/
public class PojoEntityTuplizer extends AbstractEntityTuplizer {
static final Logger log = LoggerFactory.getLogger( PojoEntityTuplizer.class );
private final Class mappedClass;
private final Class proxyInterface;
private final boolean lifecycleImplementor;
private final boolean validatableImplementor;
private final Set lazyPropertyNames = new HashSet();
private final ReflectionOptimizer optimizer;
public PojoEntityTuplizer(EntityMetamodel entityMetamodel, PersistentClass mappedEntity) {
super( entityMetamodel, mappedEntity );
this.mappedClass = mappedEntity.getMappedClass();
this.proxyInterface = mappedEntity.getProxyInterface();
this.lifecycleImplementor = Lifecycle.class.isAssignableFrom( mappedClass );
this.validatableImplementor = Validatable.class.isAssignableFrom( mappedClass );
Iterator iter = mappedEntity.getPropertyClosureIterator();
while ( iter.hasNext() ) {
Property property = (Property) iter.next();
if ( property.isLazy() ) {
lazyPropertyNames.add( property.getName() );
}
}
String[] getterNames = new String[propertySpan];
String[] setterNames = new String[propertySpan];
Class[] propTypes = new Class[propertySpan];
for ( int i = 0; i < propertySpan; i++ ) {
getterNames[i] = getters[i].getMethodName();
setterNames[i] = setters[i].getMethodName();
propTypes[i] = getters[i].getReturnType();
}
if ( hasCustomAccessors || !Environment.useReflectionOptimizer() ) {
optimizer = null;
}
else {
// todo : YUCK!!!
optimizer = Environment.getBytecodeProvider().getReflectionOptimizer( mappedClass, getterNames, setterNames, propTypes );
// optimizer = getFactory().getSettings().getBytecodeProvider().getReflectionOptimizer(
// mappedClass, getterNames, setterNames, propTypes
// );
}
}
/**
* {@inheritDoc}
*/
protected ProxyFactory buildProxyFactory(PersistentClass persistentClass, Getter idGetter, Setter idSetter) {
// determine the id getter and setter methods from the proxy interface (if any)
// determine all interfaces needed by the resulting proxy
HashSet proxyInterfaces = new HashSet();
proxyInterfaces.add( HibernateProxy.class );
Class mappedClass = persistentClass.getMappedClass();
Class proxyInterface = persistentClass.getProxyInterface();
if ( proxyInterface!=null && !mappedClass.equals( proxyInterface ) ) {
if ( !proxyInterface.isInterface() ) {
throw new MappingException(
"proxy must be either an interface, or the class itself: " +
getEntityName()
);
}
proxyInterfaces.add( proxyInterface );
}
if ( mappedClass.isInterface() ) {
proxyInterfaces.add( mappedClass );
}
Iterator iter = persistentClass.getSubclassIterator();
while ( iter.hasNext() ) {
Subclass subclass = ( Subclass ) iter.next();
Class subclassProxy = subclass.getProxyInterface();
Class subclassClass = subclass.getMappedClass();
if ( subclassProxy!=null && !subclassClass.equals( subclassProxy ) ) {
if ( !proxyInterface.isInterface() ) {
throw new MappingException(
"proxy must be either an interface, or the class itself: " +
subclass.getEntityName()
);
}
proxyInterfaces.add( subclassProxy );
}
}
Iterator properties = persistentClass.getPropertyIterator();
Class clazz = persistentClass.getMappedClass();
while ( properties.hasNext() ) {
Property property = (Property) properties.next();
Method method = property.getGetter(clazz).getMethod();
if ( method != null && Modifier.isFinal( method.getModifiers() ) ) {
log.error(
"Getters of lazy classes cannot be final: " + persistentClass.getEntityName() +
"." + property.getName()
);
}
method = property.getSetter(clazz).getMethod();
if ( method != null && Modifier.isFinal( method.getModifiers() ) ) {
log.error(
"Setters of lazy classes cannot be final: " + persistentClass.getEntityName() +
"." + property.getName()
);
}
}
Method idGetterMethod = idGetter==null ? null : idGetter.getMethod();
Method idSetterMethod = idSetter==null ? null : idSetter.getMethod();
Method proxyGetIdentifierMethod = idGetterMethod==null || proxyInterface==null ?
null :
ReflectHelper.getMethod(proxyInterface, idGetterMethod);
Method proxySetIdentifierMethod = idSetterMethod==null || proxyInterface==null ?
null :
ReflectHelper.getMethod(proxyInterface, idSetterMethod);
ProxyFactory pf = buildProxyFactoryInternal( persistentClass, idGetter, idSetter );
try {
pf.postInstantiate(
getEntityName(),
mappedClass,
proxyInterfaces,
proxyGetIdentifierMethod,
proxySetIdentifierMethod,
persistentClass.hasEmbeddedIdentifier() ?
(AbstractComponentType) persistentClass.getIdentifier().getType() :
null
);
}
catch ( HibernateException he ) {
log.warn( "could not create proxy factory for:" + getEntityName(), he );
pf = null;
}
return pf;
}
protected ProxyFactory buildProxyFactoryInternal(PersistentClass persistentClass, Getter idGetter, Setter idSetter) {
// TODO : YUCK!!! fix after HHH-1907 is complete
return Environment.getBytecodeProvider().getProxyFactoryFactory().buildProxyFactory();
// return getFactory().getSettings().getBytecodeProvider().getProxyFactoryFactory().buildProxyFactory();
}
/**
* {@inheritDoc}
*/
protected Instantiator buildInstantiator(PersistentClass persistentClass) {
if ( optimizer == null ) {
return new PojoInstantiator( persistentClass, null );
}
else {
return new PojoInstantiator( persistentClass, optimizer.getInstantiationOptimizer() );
}
}
/**
* {@inheritDoc}
*/
public void setPropertyValues(Object entity, Object[] values) throws HibernateException {
if ( !getEntityMetamodel().hasLazyProperties() && optimizer != null && optimizer.getAccessOptimizer() != null ) {
setPropertyValuesWithOptimizer( entity, values );
}
else {
super.setPropertyValues( entity, values );
}
}
/**
* {@inheritDoc}
*/
public Object[] getPropertyValues(Object entity) throws HibernateException {
if ( shouldGetAllProperties( entity ) && optimizer != null && optimizer.getAccessOptimizer() != null ) {
return getPropertyValuesWithOptimizer( entity );
}
else {
return super.getPropertyValues( entity );
}
}
/**
* {@inheritDoc}
*/
public Object[] getPropertyValuesToInsert(Object entity, Map mergeMap, SessionImplementor session) throws HibernateException {
if ( shouldGetAllProperties( entity ) && optimizer != null && optimizer.getAccessOptimizer() != null ) {
return getPropertyValuesWithOptimizer( entity );
}
else {
return super.getPropertyValuesToInsert( entity, mergeMap, session );
}
}
protected void setPropertyValuesWithOptimizer(Object object, Object[] values) {
optimizer.getAccessOptimizer().setPropertyValues( object, values );
}
protected Object[] getPropertyValuesWithOptimizer(Object object) {
return optimizer.getAccessOptimizer().getPropertyValues( object );
}
/**
* {@inheritDoc}
*/
public EntityMode getEntityMode() {
return EntityMode.POJO;
}
/**
* {@inheritDoc}
*/
public Class getMappedClass() {
return mappedClass;
}
/**
* {@inheritDoc}
*/
public boolean isLifecycleImplementor() {
return lifecycleImplementor;
}
/**
* {@inheritDoc}
*/
public boolean isValidatableImplementor() {
return validatableImplementor;
}
/**
* {@inheritDoc}
*/
protected Getter buildPropertyGetter(Property mappedProperty, PersistentClass mappedEntity) {
return mappedProperty.getGetter( mappedEntity.getMappedClass() );
}
/**
* {@inheritDoc}
*/
protected Setter buildPropertySetter(Property mappedProperty, PersistentClass mappedEntity) {
return mappedProperty.getSetter( mappedEntity.getMappedClass() );
}
/**
* {@inheritDoc}
*/
public Class getConcreteProxyClass() {
return proxyInterface;
}
//TODO: need to make the majority of this functionality into a top-level support class for custom impl support
/**
* {@inheritDoc}
*/
public void afterInitialize(Object entity, boolean lazyPropertiesAreUnfetched, SessionImplementor session) {
if ( isInstrumented() ) {
Set lazyProps = lazyPropertiesAreUnfetched && getEntityMetamodel().hasLazyProperties() ?
lazyPropertyNames : null;
//TODO: if we support multiple fetch groups, we would need
// to clone the set of lazy properties!
FieldInterceptionHelper.injectFieldInterceptor( entity, getEntityName(), lazyProps, session );
}
}
/**
* {@inheritDoc}
*/
public boolean hasUninitializedLazyProperties(Object entity) {
if ( getEntityMetamodel().hasLazyProperties() ) {
FieldInterceptor callback = FieldInterceptionHelper.extractFieldInterceptor( entity );
return callback != null && !callback.isInitialized();
}
else {
return false;
}
}
/**
* {@inheritDoc}
*/
public boolean isInstrumented() {
return FieldInterceptionHelper.isInstrumented( getMappedClass() );
}
/**
* {@inheritDoc}
*/
public String determineConcreteSubclassEntityName(Object entityInstance, SessionFactoryImplementor factory) {
final Class concreteEntityClass = entityInstance.getClass();
if ( concreteEntityClass == getMappedClass() ) {
return getEntityName();
}
else {
String entityName = getEntityMetamodel().findEntityNameByEntityClass( concreteEntityClass );
if ( entityName == null ) {
throw new HibernateException(
"Unable to resolve entity name from Class [" + concreteEntityClass.getName() + "]"
+ " expected instance/subclass of [" + getEntityName() + "]"
);
}
return entityName;
}
}
/**
* {@inheritDoc}
*/
public EntityNameResolver[] getEntityNameResolvers() {
return null;
}
}
