Examples of org.hibernate.LazyInitializationException

org.hibernate.LazyInitializationException
Indicates access to unfetched data outside of a session context. For example, when an uninitialized proxy or collection is accessed after the session was closed. @see Hibernate#initialize(java.lang.Object) @see Hibernate#isInitialized(java.lang.Object) @author Gavin King

      throwLazyInitializationException( "session is disconnected" );
    }
  }


  private void throwLazyInitializationException(String message) {
    throw new LazyInitializationException(
        "failed to lazily initialize a collection" +
            (role == null ? "" : " of role: " + role) +
            ", " + message
    );
  }

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    if ( !initialized ) {
      if ( allowLoadOutsideTransaction ) {
        permissiveInitialization();
      }
      else if ( session == null ) {
        throw new LazyInitializationException( "could not initialize proxy - no Session" );
      }
      else if ( !session.isOpen() ) {
        throw new LazyInitializationException( "could not initialize proxy - the owning Session was closed" );
      }
      else if ( !session.isConnected() ) {
        throw new LazyInitializationException( "could not initialize proxy - the owning Session is disconnected" );
      }
      else {
        target = session.immediateLoad( entityName, id );
        initialized = true;
        checkTargetState();

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  protected void permissiveInitialization() {
    if ( session == null ) {
      //we have a detached collection thats set to null, reattach
      if ( sessionFactoryUuid == null ) {
        throw new LazyInitializationException( "could not initialize proxy - no Session" );
      }
      try {
        SessionFactoryImplementor sf = (SessionFactoryImplementor)
            SessionFactoryRegistry.INSTANCE.getSessionFactory( sessionFactoryUuid );
        SessionImplementor session = (SessionImplementor) sf.openSession();
        session.getPersistenceContext().setDefaultReadOnly( true );
        session.setFlushMode( FlushMode.MANUAL );


        boolean isJTA = session.getTransactionCoordinator()
            .getTransactionContext().getTransactionEnvironment()
            .getTransactionFactory()
            .compatibleWithJtaSynchronization();
        
        if ( !isJTA ) {
          // Explicitly handle the transactions only if we're not in
          // a JTA environment.  A lazy loading temporary session can
          // be created even if a current session and transaction are
          // open (ex: session.clear() was used).  We must prevent
          // multiple transactions.
          ( ( Session) session ).beginTransaction();
        }


        try {
          target = session.immediateLoad( entityName, id );
        }
        finally {
          // make sure the just opened temp session gets closed!
          try {
            if ( !isJTA ) {
              ( ( Session) session ).getTransaction().commit();
            }
            ( (Session) session ).close();
          }
          catch (Exception e) {
            log.warn( "Unable to close temporary session used to load lazy proxy associated to no session" );
          }
        }
        initialized = true;
        checkTargetState();
      }
      catch (Exception e) {
        e.printStackTrace();
        throw new LazyInitializationException( e.getMessage() );
      }
    }
    else if ( session.isOpen() && session.isConnected() ) {
      target = session.immediateLoad( entityName, id );
      initialized = true;
      checkTargetState();
    }
    else {
      throw new LazyInitializationException( "could not initialize proxy - Session was closed or disced" );
    }
  }

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   * @throws LazyInitializationException if we cannot initialize
   */
  protected final void initialize(boolean writing) {
    if (!initialized) {
      if (initializing) {
        throw new LazyInitializationException("illegal access to loading collection");
      }
      throwLazyInitializationExceptionIfNotConnected();
      session.initializeCollection(this, writing);
    }
  }

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            throwLazyInitializationException("session is disconnected");
    }    
  }
  
  private void throwLazyInitializationException(String message) {
    throw new LazyInitializationException(
        "failed to lazily initialize a collection" + 
        ( role==null ?  "" : " of role: " + role ) + 
        ", " + message
      );
  }

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   * {@inheritDoc}
   */
  public final void initialize() throws HibernateException {
    if (!initialized) {
      if ( session==null ) {
        throw new LazyInitializationException("could not initialize proxy - no Session");
      }
      else if ( !session.isOpen() ) {
        throw new LazyInitializationException("could not initialize proxy - the owning Session was closed");
      }
      else if ( !session.isConnected() ) {
        throw new LazyInitializationException("could not initialize proxy - the owning Session is disconnected");
      }
      else {
        target = session.immediateLoad(entityName, id);
        initialized = true;
        checkTargetState();

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   * {@inheritDoc}
   */
  public final void initialize() throws HibernateException {
    if (!initialized) {
      if ( session==null ) {
        throw new LazyInitializationException("could not initialize proxy - no Session");
      }
      else if ( !session.isOpen() ) {
        throw new LazyInitializationException("could not initialize proxy - the owning Session was closed");
      }
      else if ( !session.isConnected() ) {
        throw new LazyInitializationException("could not initialize proxy - the owning Session is disconnected");
      }
      else {
        target = session.immediateLoad(entityName, id);
        initialized = true;
        checkTargetState();

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      // while constructor is running
      if ( method.getName().equals( "getHibernateLazyInitializer" ) ) {
        return this;
      }
      else {
        throw new LazyInitializationException( "unexpected case hit, method=" + method.getName() );
      }
    }
  }

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      return value;
    }


    if ( uninitializedFields != null && uninitializedFields.contains( fieldName ) ) {
      if ( session == null ) {
        throw new LazyInitializationException( "entity with lazy properties is not associated with a session" );
      }
      else if ( !session.isOpen() || !session.isConnected() ) {
        throw new LazyInitializationException( "session is not connected" );
      }


      final Object result;
      initializing = true;
      try {

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  @Override
  public final void initialize() throws HibernateException {
    if (!initialized) {
      if ( session==null ) {
        throw new LazyInitializationException("could not initialize proxy - no Session");
      }
      else if ( !session.isOpen() ) {
        throw new LazyInitializationException("could not initialize proxy - the owning Session was closed");
      }
      else if ( !session.isConnected() ) {
        throw new LazyInitializationException("could not initialize proxy - the owning Session is disconnected");
      }
      else {
        target = session.immediateLoad(entityName, id);
        initialized = true;
        checkTargetState();

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org.hibernate.bytecode.instrumentation.spi.AbstractFieldInterceptor

org.hibernate.collection.AbstractPersistentCollection

org.hibernate.collection.internal.AbstractPersistentCollection

org.hibernate.intercept.AbstractFieldInterceptor

org.hibernate.proxy.AbstractLazyInitializer

org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer

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