createRelationshipFromNodeToNodes method

Future<List<Relationship?>> createRelationshipFromNodeToNodes({
  1. required int startNodeId,
  2. required List<int> endNodesId,
  3. required String relationName,
  4. required Map<String, dynamic> properties,
})

Create relationship between one to many nodes (1->*)

Nodes are identified by their ID endNodesId. Relationship can starts only from ONE node startNodeId relationName represents the name of the relationship properties are properties of the relationship

Implementation

Future<List<Relationship?>> createRelationshipFromNodeToNodes({
  required int startNodeId,
  required List<int> endNodesId,
  required String relationName,
  required Map<String, dynamic> properties,
}) {
  if (endNodesId.length > 1) {
    if (startNodeId >= 0 && endNodesId.every((id) => id >= 0)) {
      return _neoService.createRelationshipFromNodeToNodes(startNodeId, endNodesId, relationName, properties);
    } else {
      throw InvalidIdException(cause: "ID can't be negative");
    }
  } else {
    throw NotEnoughIdException(cause: "More than 1 id is needed");
  }
}