Examples of org.hibernate.ogm.type.GridType

org.hibernate.ogm.type.GridType
Defines a mapping between a Java type and one grid type, as well as describing the in-memory semantics of the given java type (how do we check it for 'dirtiness', how do we copy values, etc).
Application developers needing custom types can implement this interface (either directly or via subclassing an existing impl) or by the (slightly more stable, though more limited) {@link org.hibernate.usertype.UserType}interface.
Implementations of this interface must certainly be thread-safe. It is recommended that they be immutable as well, though that is difficult to achieve completely given the no-arg constructor requirement for custom types. @author Gavin King @author Steve Ebersole @author Emmanuel Bernard

    return gridValue;
  }


  private Object convertToGridType(Object value, Type propertyType) {
    Tuple dummy = new Tuple();
    GridType gridType = typeTranslator().getType( propertyType );
    gridType.nullSafeSet( dummy, value, new String[] { "key" }, null );
    return dummy.get( "key" );
  }

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    }
    else {
      if (optionalId == null) {
        final OgmEntityPersister currentPersister = entityPersisters[0];
        Tuple tuple =  ogmLoadingContext.getResultSet().getTuple();
        GridType gridIdentifierType = currentPersister.getGridIdentifierType();
        optionalId = (Serializable) gridIdentifierType.nullSafeGet( tuple, currentPersister.getIdentifierColumnNames(), session, null );
      }
      final org.hibernate.engine.spi.EntityKey key = session.generateEntityKey( optionalId,  entityPersisters[0] );
      keys[0] = key;
    }
  }

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      String propertyName,
      Object uniqueKey,
      SessionImplementor session) throws HibernateException {
    //we get the property type for an associated entity
    final int propertyIndex = getPropertyIndex( propertyName );
    final GridType gridUniqueKeyType = getUniqueKeyTypeFromAssociatedEntity( propertyIndex, propertyName );
    //get the associated property index (to get its column names)
    //find the ids per unique property name
    AssociationKeyMetadata associationKeyMetadata = associationKeyMetadataPerPropertyName.get( propertyName );
    if ( associationKeyMetadata == null ) {
      throw new AssertionFailure( "loadByUniqueKey on a non EntityType:" + propertyName );

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              + " value: " + uniqueKey );
    }
  }


  private GridType getUniqueKeyTypeFromAssociatedEntity(int propertyIndex, String propertyName) {
    GridType gridUniqueKeyType;//get the unique key type and if it's an entity type, get it's identifier type
    final Type uniqueKeyType = getPropertyTypes()[propertyIndex];
    if ( uniqueKeyType.isEntityType() ) {
      //we run under the assumption that we are fully in an OGM world
      EntityType entityType = (EntityType) uniqueKeyType;
      final OgmEntityPersister entityPersister = (OgmEntityPersister) entityType.getAssociatedJoinable( getFactory() );

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          for ( int i = 0; i < entityMetamodel.getPropertySpan(); i++ ) {
            boolean include = includeOldField[i] &&
                isPropertyOfTable( i, j ) &&
                versionability[i]; //TODO: is this really necessary????
            if ( include ) {
              final GridType type = types[i];
              //FIXME what do do with settable?
              boolean[] settable = type.toColumnNullness( oldFields[i], factory );
              final Object snapshotValue = type.nullSafeGet(
                  resultset, getPropertyColumnNames( i ), session, object
              );
              comparePropertyAndRaiseSOSE(
                  id,
                  oldFields[i],
                  factory,
                  !type.isEqual( oldFields, snapshotValue, factory )
              );


            }
          }
        }

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        GridType[] types = gridPropertyTypes;


        for ( int i = 0; i < entityMetamodel.getPropertySpan(); i++ ) {
          boolean include = isPropertyOfTable( i, j ) && versionability[i];
          if ( include ) {
            final GridType type = types[i];
            final Object snapshotValue = type.nullSafeGet(
                resultset, getPropertyColumnNames( i ), session, object
            );
            //TODO support other entity modes
            if ( ! type.isEqual( loadedState[i], snapshotValue, factory ) ) {
              if ( factory.getStatistics().isStatisticsEnabled() ) {
                factory.getStatisticsImplementor()
                    .optimisticFailure( getEntityName() );
              }
              throw new StaleObjectStateException( getEntityName(), id );

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      return null;
    }


    //TODO should we cache results? It seems an actual HashMap might be slower but it makes it more robust
    //     against badly written dialects
    GridType dialectType = dialect.overrideType( type );
    if ( dialectType != null ) {
      return dialectType;
    }
    else if ( type instanceof AbstractStandardBasicType ) {
      AbstractStandardBasicType<?> exposedType = (AbstractStandardBasicType<?>) type;
      final GridType gridType = typeConverter.get( exposedType.getJavaTypeDescriptor() );
      if (gridType == null) {
        throw log.unableToFindGridType( exposedType.getJavaTypeDescriptor().getJavaTypeClass().getName() );
      }
      return gridType;
    }

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      associationPersister.flushToCache();
    }
  }


  private Object getReferencedEntity(int propertyIndex) {
    GridType propertyType = gridPropertyTypes[propertyIndex];
    Serializable id = (Serializable) propertyType.hydrate(
        resultset, persister.getPropertyColumnNames( propertyIndex ), session, null
    );


    if ( id != null ) {
      EntityPersister hostingEntityPersister = session.getFactory().getEntityPersister(
          propertyType.getReturnedClass().getName()
      );


      return session.getPersistenceContext().getEntity(
          session.generateEntityKey( id, hostingEntityPersister )
      );

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  public Object loadByUniqueKey(
      String propertyName,
      Object uniqueKey,
      SessionImplementor session) throws HibernateException {
    //we get the property type for an associated entity
    final GridType gridUniqueKeyType = getUniqueKeyTypeFromAssociatedEntity( propertyName );
    //get the associated property index (to get its column names)
    final int propertyIndex = getPropertyIndex( propertyName );
    //find the ids per unique property name
    PropertyMetadataProvider metadataProvider = new PropertyMetadataProvider()
        .tableName( getTableName() )

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              + " value: " + uniqueKey );
    }
  }


  private GridType getUniqueKeyTypeFromAssociatedEntity(String propertyName) {
    GridType gridUniqueKeyType;//get the unique key type and if it's an entity type, get it's identifier type
    final Type uniqueKeyType = propertyMapping.toType( propertyName );
    if ( uniqueKeyType.isEntityType() ) {
      String className = ( ( EntityType ) uniqueKeyType ).getAssociatedEntityName();
      //we run under the assumption that we are fully in an OGM world
      final OgmEntityPersister entityPersister = (OgmEntityPersister) getFactory().getEntityPersister( className );

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