Examples of org.hibernate.engine.spi.ManagedEntity

org.hibernate.engine.spi.ManagedEntity
Specialized {@link Managed} contract for entity classes. Essentially provides access to informationabout an instance's association to a Session/EntityManager. Specific information includes:
- the association's {@link EntityEntry} (by way of {@link #$$_hibernate_getEntityEntry} and{@link #$$_hibernate_setEntityEntry}). EntityEntry describes states, snapshots, etc.
- link information. ManagedEntity instances are part of a "linked list", thus link information describes the next and previous entries/nodes in that ordering. See {@link #$$_hibernate_getNextManagedEntity}, {@link #$$_hibernate_setNextManagedEntity}, {@link #$$_hibernate_getPreviousManagedEntity}, {@link #$$_hibernate_setPreviousManagedEntity}
@author Steve Ebersole

  }


  public EntityEntry removeEntityEntry(Object entity) {
    dirty = true;


    final ManagedEntity managedEntity;
    if ( ManagedEntity.class.isInstance( entity ) ) {
      managedEntity = (ManagedEntity) entity;
    }
    else if ( nonEnhancedEntityXref == null ) {
      managedEntity = null;
    }
    else {
      managedEntity = nonEnhancedEntityXref.remove( entity );
    }


    if ( managedEntity == null ) {
      return null;
    }


    // prepare for re-linking...
    ManagedEntity previous = managedEntity.$$_hibernate_getPreviousManagedEntity();
    ManagedEntity next = managedEntity.$$_hibernate_getNextManagedEntity();
    managedEntity.$$_hibernate_setPreviousManagedEntity( null );
    managedEntity.$$_hibernate_setNextManagedEntity( null );


    count--;


    if ( count == 0 ) {
      // handle as a special case...
      head = null;
      tail = null;


      assert previous == null;
      assert next == null;
    }
    else {
      // otherwise, previous or next (or both) should be non-null
      if ( previous == null ) {
        // we are removing head
        assert managedEntity == head;
        head = next;
      }
      else {
        previous.$$_hibernate_setNextManagedEntity( next );
      }


      if ( next == null ) {
        // we are removing tail
        assert managedEntity == tail;
        tail = previous;
      }
      else {
        next.$$_hibernate_setPreviousManagedEntity( previous );
      }
    }


    EntityEntry theEntityEntry = managedEntity.$$_hibernate_getEntityEntry();
    managedEntity.$$_hibernate_setEntityEntry( null );

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  public Map.Entry<Object, EntityEntry>[] reentrantSafeEntityEntries() {
    if ( dirty ) {
      reentrantSafeEntries = new EntityEntryCrossRefImpl[count];
      int i = 0;
      ManagedEntity managedEntity = head;
      while ( managedEntity != null ) {
        reentrantSafeEntries[i++] = new EntityEntryCrossRefImpl(
            managedEntity.$$_hibernate_getEntityInstance(),
            managedEntity.$$_hibernate_getEntityEntry()
        );
        managedEntity = managedEntity.$$_hibernate_getNextManagedEntity();
      }
      dirty = false;
    }
    return reentrantSafeEntries;
  }

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  }


  public void clear() {
    dirty = true;


    ManagedEntity node = head;
    while ( node != null ) {
      final ManagedEntity nextNode = node.$$_hibernate_getNextManagedEntity();


      node.$$_hibernate_setEntityEntry( null );
      node.$$_hibernate_setPreviousManagedEntity( null );
      node.$$_hibernate_setNextManagedEntity( null );

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  public void downgradeLocks() {
    if ( head == null ) {
      return;
    }


    ManagedEntity node = head;
    while ( node != null ) {
      node.$$_hibernate_getEntityEntry().setLockMode( LockMode.NONE );


      node = node.$$_hibernate_getNextManagedEntity();
    }
  }

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    oos.writeInt( count );
    if ( count == 0 ) {
      return;
    }


    ManagedEntity managedEntity = head;
    while ( managedEntity != null ) {
      // so we know whether or not to build a ManagedEntityImpl on deserialize
      oos.writeBoolean( managedEntity == managedEntity.$$_hibernate_getEntityInstance() );
      oos.writeObject( managedEntity.$$_hibernate_getEntityInstance() );
      managedEntity.$$_hibernate_getEntityEntry().serialize( oos );


      managedEntity = managedEntity.$$_hibernate_getNextManagedEntity();
    }
  }

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    if ( count == 0 ) {
      return context;
    }


    ManagedEntity previous = null;


    for ( int i = 0; i < count; i++ ) {
      final boolean isEnhanced = ois.readBoolean();
      final Object entity = ois.readObject();
      final EntityEntry entry = EntityEntry.deserialize( ois, rtn );
      final ManagedEntity managedEntity;
      if ( isEnhanced ) {
        managedEntity = (ManagedEntity) entity;
      }
      else {
        managedEntity = new ManagedEntityImpl( entity );
        if ( context.nonEnhancedEntityXref == null ) {
          context.nonEnhancedEntityXref = new IdentityHashMap<Object, ManagedEntity>();
        }
        context.nonEnhancedEntityXref.put( entity, managedEntity );
      }
      managedEntity.$$_hibernate_setEntityEntry( entry );


      if ( previous == null ) {
        context.head = managedEntity;
      }
      else {
        previous.$$_hibernate_setNextManagedEntity( managedEntity );
        managedEntity.$$_hibernate_setPreviousManagedEntity( previous );
      }


      previous = managedEntity;
    }

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    // any addition (even the double one described above) should invalidate the cross-ref array
    dirty = true;


    // determine the appropriate ManagedEntity instance to use based on whether the entity is enhanced or not.
    // also track whether the entity was already associated with the context
    final ManagedEntity managedEntity;
    final boolean alreadyAssociated;
    if ( ManagedEntity.class.isInstance( entity ) ) {
      managedEntity = (ManagedEntity) entity;
      alreadyAssociated = managedEntity.$$_hibernate_getEntityEntry() != null;
    }
    else {
      ManagedEntity wrapper = null;
      if ( nonEnhancedEntityXref == null ) {
        nonEnhancedEntityXref = new IdentityHashMap<Object, ManagedEntity>();
      }
      else {
        wrapper = nonEnhancedEntityXref.get( entity );

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   *
   * @return The associated EntityEntry
   */
  public EntityEntry getEntityEntry(Object entity) {
    // essentially resolve the entity to a ManagedEntity...
    final ManagedEntity managedEntity;
    if ( ManagedEntity.class.isInstance( entity ) ) {
      managedEntity = (ManagedEntity) entity;
    }
    else if ( nonEnhancedEntityXref == null ) {
      managedEntity = null;
    }
    else {
      managedEntity = nonEnhancedEntityXref.get( entity );
    }


    // and get/return the EntityEntry from the ManagedEntry
    return managedEntity == null
        ? null
        : managedEntity.$$_hibernate_getEntityEntry();
  }

View Full Code Here

   */
  public EntityEntry removeEntityEntry(Object entity) {
    dirty = true;


    // again, resolve the entity to a ManagedEntity (which may not be possible for non-enhanced)...
    final ManagedEntity managedEntity;
    if ( ManagedEntity.class.isInstance( entity ) ) {
      managedEntity = (ManagedEntity) entity;
    }
    else if ( nonEnhancedEntityXref == null ) {
      managedEntity = null;
    }
    else {
      managedEntity = nonEnhancedEntityXref.remove( entity );
    }


    // if we could not resolve it, just return (it was not associated with this context)
    if ( managedEntity == null ) {
      return null;
    }


    // prepare for re-linking...
    final ManagedEntity previous = managedEntity.$$_hibernate_getPreviousManagedEntity();
    final ManagedEntity next = managedEntity.$$_hibernate_getNextManagedEntity();
    managedEntity.$$_hibernate_setPreviousManagedEntity( null );
    managedEntity.$$_hibernate_setNextManagedEntity( null );


    // re-link
    count--;


    if ( count == 0 ) {
      // handle as a special case...
      head = null;
      tail = null;


      assert previous == null;
      assert next == null;
    }
    else {
      // otherwise, previous or next (or both) should be non-null
      if ( previous == null ) {
        // we are removing head
        assert managedEntity == head;
        head = next;
      }
      else {
        previous.$$_hibernate_setNextManagedEntity( next );
      }


      if ( next == null ) {
        // we are removing tail
        assert managedEntity == tail;
        tail = previous;
      }
      else {
        next.$$_hibernate_setPreviousManagedEntity( previous );
      }
    }


    // finally clean out the ManagedEntity and return the associated EntityEntry
    final EntityEntry theEntityEntry = managedEntity.$$_hibernate_getEntityEntry();

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   */
  public Map.Entry<Object, EntityEntry>[] reentrantSafeEntityEntries() {
    if ( dirty ) {
      reentrantSafeEntries = new EntityEntryCrossRefImpl[count];
      int i = 0;
      ManagedEntity managedEntity = head;
      while ( managedEntity != null ) {
        reentrantSafeEntries[i++] = new EntityEntryCrossRefImpl(
            managedEntity.$$_hibernate_getEntityInstance(),
            managedEntity.$$_hibernate_getEntityEntry()
        );
        managedEntity = managedEntity.$$_hibernate_getNextManagedEntity();
      }
      dirty = false;
    }
    return reentrantSafeEntries;
  }

View Full Code Here

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org.hibernate.engine.internal.EntityEntryContext

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