Examples of org.hibernate.ogm.type.spi.GridType

org.hibernate.ogm.type.spi.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

      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 = inverseOneToOneAssociationKeyMetadata.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
                    );


                if ( !type.isEqual( oldFields[i], snapshotValue, factory ) ) {
                  raiseStaleObjectStateException( id );
                }
              }
            }
          }

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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, getFactory() ) ) {
              raiseStaleObjectStateException( id );
            }
          }
        }
      }

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    Map<String, Object> parameterValues = new HashMap<String, Object>( queryParameters.getNamedParameters().size() );
    Tuple dummy = new Tuple();
    TypeTranslator typeTranslator = serviceRegistry.getService( TypeTranslator.class );


    for ( Entry<String, TypedValue> parameter : queryParameters.getNamedParameters().entrySet() ) {
      GridType gridType = typeTranslator.getType( parameter.getValue().getType() );
      gridType.nullSafeSet( dummy, parameter.getValue().getValue(), new String[]{ parameter.getKey() }, null );
      parameterValues.put( parameter.getKey(), dummy.get( parameter.getKey() ) );
    }


    return parameterValues;
  }

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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 = inverseOneToOneAssociationKeyMetadata.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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    }
    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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