@SuppressWarnings("unchecked")
@Override
public void modifying(ScalarEvent e) {
FrozenLazyInitializerImpl declaring = FrozenLazyInitializerImpl.this;
if (!declaring.disableTargetListener) {
ObjectModelFactory<ObjectModel> omFactory = declaring.omFactory;
LazyInitializer rawLazyInitializer = declaring.lazyInitializer;
EventAttributeContext localAttributeContext = e.getAttributeContext(AttributeScope.LOCAL);
if (rawLazyInitializer.isUninitialized()
|| omFactory.get(rawLazyInitializer.getImplementation()) != e.getSource()) {
((ObjectModel) e.getSource()).removeScalarListener(this);
return;
}
localAttributeContext.addAttribute(AK_MODIFIYING_EXECUTED, true);
if (e.getProperty() == declaring.objectModelMetadata.getEntityIdProperty()) {
FrozenContext<Object> ctx = (FrozenContext<Object>) declaring.idFrozenContext;
localAttributeContext.addAttribute(AK_FROZENCONTEXT, ctx);
FrozenContext.suspendFreezing(ctx, declaring.owner);
}
ScalarListener scalarListener = declaring.scalarListener;
if (scalarListener != null) {
declaring.executeModifying(e.dispatch(declaring.omFactory.get(declaring.owner)));
}
}
}
/**
* Pega o objeto real que esta sendo utilizado. Isto é necessário pois o hibernate empacota alguns
* objetos em proxies.
*
* @param example o exemplo do bean que será utilizado na conversão
* @return o objeto real que esta sendo utilizado
*/
public static Object getBean(Object example) {
if (example instanceof HibernateProxy) {
HibernateProxy proxy = (HibernateProxy) example;
LazyInitializer initializer = proxy.getHibernateLazyInitializer();
// este código é soh para garantir que não vai dar um lazy initialization.
SessionImplementor implementor = initializer.getSession();
if (initializer.isUninitialized()) {
try {
// getImplementation is going to want to talk to a session
if (implementor.isClosed()) {
// Give up and return example.getClass();
return example;
}
} catch (NoSuchMethodError ex) {
// We must be using Hibernate 3.0/3.1 which doesn't have
// this method
}
}
return initializer.getImplementation();
} else {
return example;
}
}
private EntityPersister guessEntityPersister(Object object) {
if (scope == null) {
return null;
}
String entityName = null;
// this code is largely copied from Session's bestGuessEntityName
Object entity = object;
if (entity instanceof HibernateProxy) {
final LazyInitializer initializer = ((HibernateProxy) entity).getHibernateLazyInitializer();
if (initializer.isUninitialized()) {
entityName = initializer.getEntityName();
}
entity = initializer.getImplementation();
}
if (entityName == null) {
for (EntityNameResolver resolver : scope.resolveFactory().iterateEntityNameResolvers()) {
entityName = resolver.resolveEntityName(entity);
if (entityName != null) {
break;
}
}
}
if (entityName == null) {
// the old-time stand-by...
entityName = object.getClass().getName();
}
return scope.resolveFactory().getEntityPersister(entityName);
}
/**
* Get the entity instance underlying the given proxy, throwing an exception if the proxy is
* uninitialized. If the given object is not a proxy, simply return the argument.
*/
public Object unproxy(Object maybeProxy) throws HibernateException {
if (maybeProxy instanceof ElementWrapper) {
maybeProxy = ((ElementWrapper) maybeProxy).getElement();
}
if (maybeProxy instanceof HibernateProxy) {
HibernateProxy proxy = (HibernateProxy) maybeProxy;
LazyInitializer li = proxy.getHibernateLazyInitializer();
if (li.isUninitialized()) {
throw new PersistentObjectException(
"object was an uninitialized proxy for " + li.getEntityName());
}
return li.getImplementation(); // unwrap the object
} else {
return maybeProxy;
}
}
@Override
public void setImplementation(Object target) {
LazyInitializer rawLazyInitializer = this.lazyInitializer;
Object oldTarget =
rawLazyInitializer.isUninitialized() ? null : rawLazyInitializer.getImplementation();
if (target != oldTarget) {
ScalarListener listener = this.new TargetScalarListener();
if (oldTarget != null) {
this.omFactory.get(oldTarget).removeScalarListener(listener);
}
rawLazyInitializer.setImplementation(target);
this.oldTarget = target;
if (target != null) {
ObjectModel targetOM = this.omFactory.get(target);
targetOM.removeScalarListener(listener); // remove the duplicated listener.
targetOM.addScalarListener(listener);
}
}
}
/**
* Check if the property is initialized. If the named property does not exist or is not
* persistent, this method always returns <tt>true</tt>.
*
* @param proxy The potential proxy
* @param propertyName the name of a persistent attribute of the object
* @return true if the named property of the object is not listed as uninitialized; false
* otherwise
*/
public static boolean isPropertyInitialized(Object proxy, String propertyName) {
Object entity;
if (proxy instanceof HibernateProxy) {
LazyInitializer li = ((HibernateProxy) proxy).getHibernateLazyInitializer();
if (li.isUninitialized()) {
return false;
} else {
entity = li.getImplementation();
}
} else {
entity = proxy;
}
if (FieldInterceptionHelper.isInstrumented(entity)) {
FieldInterceptor interceptor = FieldInterceptionHelper.extractFieldInterceptor(entity);
return interceptor == null || interceptor.isInitialized(propertyName);
} else {
return true;
}
}
protected Class<?> getClass(ExtendedObjectOutput out, Object v) {
Class<?> cls = v.getClass();
if (v instanceof HibernateProxy) {
LazyInitializer initializer = ((HibernateProxy) v).getHibernateLazyInitializer();
String className =
(initializer.isUninitialized()
? initializer.getEntityName()
: initializer.getImplementation().getClass().getName());
if (className != null && className.length() > 0) {
try {
cls = out.getReflection().loadClass(className);
} catch (ClassNotFoundException e) {
cls = initializer.getPersistentClass();
}
}
}
return cls;
}
@SuppressWarnings("unchecked")
private void initTransient(Class<?> persistentClass) {
LazyInitializer rawLazyInitializer = this.lazyInitializer;
if (persistentClass == null) {
persistentClass = getPersistentClass((BasicLazyInitializer) rawLazyInitializer);
}
HibernateObjectModelMetadata objectModelMetadata = HibernateMetadatas.of(persistentClass);
this.objectModelMetadata = objectModelMetadata;
this.omFactory =
(ObjectModelFactory<ObjectModel>)
ObjectModelFactoryFactory.factoryOf(objectModelMetadata.getObjectModelClass());
try {
this.getIdentifierMethod = (Method) GET_IDENTIFIER_METHOD_FIELD.get(rawLazyInitializer);
this.setIdentifierMethod = (Method) SET_IDENTIFIER_METHOD_FIELD.get(rawLazyInitializer);
} catch (IllegalArgumentException | IllegalAccessException e) {
throw new AssertionError();
}
if (!rawLazyInitializer.isUninitialized()) {
ObjectModel targetOM = this.omFactory.get(rawLazyInitializer.getImplementation());
ScalarListener listener = this.new TargetScalarListener();
targetOM.removeScalarListener(listener);
targetOM.addScalarListener(listener);
}
}
