@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)));
     }
   }
 }
Ejemplo n.º 2
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  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);
  }
Ejemplo n.º 3
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  /**
   * 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;
    }
  }
  /**
   * If the existing proxy is insufficiently "narrow" (derived), instantiate a new proxy and
   * overwrite the registration of the old one. This breaks == and occurs only for "class" proxies
   * rather than "interface" proxies. Also init the proxy to point to the given target
   * implementation if necessary.
   *
   * @param proxy The proxy instance to be narrowed.
   * @param persister The persister for the proxied entity.
   * @param key The internal cache key for the proxied entity.
   * @param object (optional) the actual proxied entity instance.
   * @return An appropriately narrowed instance.
   * @throws HibernateException
   */
  public Object narrowProxy(Object proxy, EntityPersister persister, EntityKey key, Object object)
      throws HibernateException {

    boolean alreadyNarrow =
        persister.getConcreteProxyClass(session.getEntityMode()).isAssignableFrom(proxy.getClass());

    if (!alreadyNarrow) {
      if (PROXY_WARN_LOG.isWarnEnabled()) {
        PROXY_WARN_LOG.warn(
            "Narrowing proxy to "
                + persister.getConcreteProxyClass(session.getEntityMode())
                + " - this operation breaks ==");
      }

      if (object != null) {
        proxiesByKey.remove(key);
        return object; // return the proxied object
      } else {
        proxy = persister.createProxy(key.getIdentifier(), session);
        proxiesByKey.put(key, proxy); // overwrite old proxy
        return proxy;
      }

    } else {

      if (object != null) {
        LazyInitializer li = ((HibernateProxy) proxy).getHibernateLazyInitializer();
        li.setImplementation(object);
      }

      return proxy;
    }
  }
 /** Associate a proxy that was instantiated by another session with this session */
 private void reassociateProxy(LazyInitializer li, HibernateProxy proxy)
     throws HibernateException {
   if (li.getSession() != this) {
     EntityPersister persister = session.getFactory().getEntityPersister(li.getEntityName());
     EntityKey key = new EntityKey(li.getIdentifier(), persister, session.getEntityMode());
     if (!proxiesByKey.containsKey(key))
       proxiesByKey.put(key, proxy); // any earlier proxy takes precedence
     proxy.getHibernateLazyInitializer().setSession(session);
   }
 }
  /**
   * If a deleted entity instance is re-saved, and it has a proxy, we need to reset the identifier
   * of the proxy
   */
  public void reassociateProxy(Object value, Serializable id) throws MappingException {
    if (value instanceof ElementWrapper) {
      value = ((ElementWrapper) value).getElement();
    }

    if (value instanceof HibernateProxy) {
      if (log.isDebugEnabled()) log.debug("setting proxy identifier: " + id);
      HibernateProxy proxy = (HibernateProxy) value;
      LazyInitializer li = proxy.getHibernateLazyInitializer();
      li.setIdentifier(id);
      reassociateProxy(li, proxy);
    }
  }
  /**
   * Possibly unproxy the given reference and reassociate it with the current session.
   *
   * @param maybeProxy The reference to be unproxied if it currently represents a proxy.
   * @return The unproxied instance.
   * @throws HibernateException
   */
  public Object unproxyAndReassociate(Object maybeProxy) throws HibernateException {
    if (maybeProxy instanceof ElementWrapper) {
      maybeProxy = ((ElementWrapper) maybeProxy).getElement();
    }

    if (maybeProxy instanceof HibernateProxy) {
      HibernateProxy proxy = (HibernateProxy) maybeProxy;
      LazyInitializer li = proxy.getHibernateLazyInitializer();
      reassociateProxy(li, proxy);
      return li.getImplementation(); // initialize + unwrap the object
    } else {
      return maybeProxy;
    }
  }
Ejemplo n.º 8
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  @Test
  public void shouldRunHibernateLazyInitialization() throws Exception {
    LazyInitializer initializer = mock(LazyInitializer.class);

    SomeProxy proxy = new SomeProxy(initializer);
    proxy.name = "my name";
    proxy.aField = "abc";

    when(initializer.getPersistentClass()).thenReturn(Client.class);
    when(proxy.getHibernateLazyInitializer().getImplementation()).thenReturn(proxy);

    serialization.from(proxy).serialize();

    assertThat(result(), is("{\"client\":{\"aField\":\"abc\",\"name\":\"my name\"}}"));
  }
 /** Given that there is a pre-existing proxy. Initialize it if necessary; narrow if necessary. */
 private Object returnNarrowedProxy(
     final LoadEvent event,
     final EntityPersister persister,
     final EntityKey keyToLoad,
     final LoadEventListener.LoadType options,
     final PersistenceContext persistenceContext,
     final Object proxy) {
   log.trace("entity proxy found in session cache");
   LazyInitializer li = ((HibernateProxy) proxy).getHibernateLazyInitializer();
   if (li.isUnwrap()) {
     return li.getImplementation();
   }
   // return existing or narrowed proxy
   Object impl =
       options.isAllowProxyCreation() ? null : load(event, persister, keyToLoad, options);
   return persistenceContext.narrowProxy(proxy, persister, keyToLoad, impl);
 }
  /**
   * 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);
     }
   }
 }
Ejemplo n.º 12
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  /**
   * 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;
    }
  }
Ejemplo n.º 13
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  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);
   }
 }
Ejemplo n.º 15
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 /**
  * @param proxy
  * @return
  * @throws ClassNotFoundException
  */
 public static Object loadLazyObject(HibernateProxy proxy) throws ClassNotFoundException {
   LazyInitializer init = proxy.getHibernateLazyInitializer();
   logger.debug(init.getEntityName() + StringUtils.SPACE + init.getIdentifier());
   return HibernateUtil.getObject(Class.forName(init.getEntityName()), init.getIdentifier());
 }