Examples of org.hibernate.ogm.model.spi.Tuple

org.hibernate.ogm.model.spi.Tuple
Represents a Tuple (think of it as a row) A tuple accepts a TupleShapshot which is a read-only state of the tuple at creation time. A tuple collects changes applied to it. These changes are represented by a list of TupleOperation. It is intended that GridDialects retrieve to these actions and reproduce them to the datastore. The list of changes is computed based off the snapshot. @author Emmanuel Bernard <emmanuel@hibernate.org> @author Sanne Grinovero <sanne@hibernate.org>


    return IdSourceKey.forTable( generatorKeyMetadata, segmentName );
  }


  private Object nullSafeSet(GridType type, Object value, String columnName, SessionImplementor session) {
    Tuple tuple = new Tuple();
    type.nullSafeSet( tuple, value, new String[] { columnName }, session );
    return tuple.get( columnName );
  }

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    return createTuple( entityNode, context );
  }


  @Override
  public Tuple createTuple(EntityKey key, TupleContext tupleContext) {
    return new Tuple();
  }

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  public Tuple createTuple(EntityKey key, TupleContext tupleContext) {
    return new Tuple();
  }


  private static Tuple createTuple(Node entityNode, TupleContext tupleContext) {
    return new Tuple( new Neo4jTupleSnapshot( entityNode, tupleContext.getAllAssociatedEntityKeyMetadata(), tupleContext.getAllRoles() ) );
  }

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    for ( EntityKeyMetadata entityKeyMetadata : entityKeyMetadatas ) {
      ResourceIterator<Node> queryNodes = entityQueries.get( entityKeyMetadata ).findEntities( executionEngine );
      try {
        while ( queryNodes.hasNext() ) {
          Node next = queryNodes.next();
          Tuple tuple = new Tuple( new Neo4jTupleSnapshot( next ) );
          consumer.consume( tuple );
        }
      }
      finally {
        queryNodes.close();

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   * Returns a map with the named parameter values from the given parameters object, converted by the {@link GridType}
   * corresponding to each parameter type.
   */
  private Map<String, Object> getNamedParameterValuesConvertedByGridType(QueryParameters queryParameters) {
    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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  public Tuple next() {
    return convert( iterator.next() );
  }


  protected Tuple convert(Map<String, Object> next) {
    return new Tuple( new MapTupleSnapshot( next ) );
  }

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  @Override
  public Tuple getTuple(EntityKey key, TupleContext tupleContext) {
    DBObject found = this.getObject( key, tupleContext );
    if ( found != null ) {
      return new Tuple( new BatchableMongoDBTupleSnapshot( found, key.getMetadata(), UPDATE ) );
    }
    else if ( isInTheQueue( key, tupleContext ) ) {
      // The key has not been inserted in the db but it is in the queue
      return new Tuple( new BatchableMongoDBTupleSnapshot( prepareIdObject( key ), key.getMetadata(), INSERT ) );
    }
    else {
      return null;
    }
  }

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    return queue != null && queue.contains( key );
  }


  @Override
  public Tuple createTuple(EntityKeyMetadata entityKeyMetadata, TupleContext tupleContext) {
    return new Tuple( new BatchableMongoDBTupleSnapshot( new BasicDBObject(), entityKeyMetadata, SnapshotType.INSERT ) );
  }

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  }


  @Override
  public Tuple createTuple(EntityKey key, TupleContext tupleContext) {
    DBObject toSave = this.prepareIdObject( key );
    return new Tuple( new BatchableMongoDBTupleSnapshot( toSave, key.getMetadata(), SnapshotType.INSERT ) );
  }

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  public void forEachTuple(ModelConsumer consumer, EntityKeyMetadata... entityKeyMetadatas) {
    DB db = provider.getDatabase();
    for ( EntityKeyMetadata entityKeyMetadata : entityKeyMetadatas ) {
      DBCollection collection = db.getCollection( entityKeyMetadata.getTable() );
      for ( DBObject dbObject : collection.find() ) {
        consumer.consume( new Tuple( new MongoDBTupleSnapshot( dbObject, entityKeyMetadata) ) );
      }
    }
  }

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