linkHelpers

The QueryRunner class also provides some helpers for custom Cypher queries.

linkGetting the properties from a QueryResult

The properties of nodes can be easily fetched

1linkconst queryResult = await queryRunner.run(

2link    `MATCH (n:User {id: $id}) RETURN n`,

3link    { id: 1 },

4link);

5link

6link/* --> get the properties of the node with the alias 'n' */

7linkconst properties = QueryRunner.getResultProperties(queryResult, 'n');

8linkconsole.log(properties[0].id); // 1

linkGetting how many nodes where deleted, from a QueryResult

1linkconst res = await queryRunner.delete({

2link    where: {

3link        name: 'John'

4link    },

5link});

6link

7linkconst nodesDeleted = QueryRunner.getNodesDeleted(res);

8linkconsole.log(nodesDeleted); // 5

linkDefault QueryRunner identifiers

QueryRunner exposes the default identifiers which are used in the queries.

1link/* --> general purpose default identifier */

2linkconsole.log(QueryRunner.identifiers.default);

3link/* --> default identifiers for createRelationship */

4linkconsole.log(QueryRunner.createRelationship);

5link/* default identifier for the source node */

6linkconsole.log(QueryRunner.createRelationship.source);

7link/* default identifier for the target node */

8linkconsole.log(QueryRunner.createRelationship.target);