Create

This page describes how to add a CREATE clause with the Cypher®.Create class.

To add the CREATE clause, first create a valid pattern using the Pattern class:

const movie = new Cypher.Node();
const pattern = new Cypher.Pattern(movie, { labels: ["Movie"] });

const matchQuery = new Cypher.Create(pattern);

This generates the following CREATE clause:

CREATE (this:Movie)

Properties can be passed to the Pattern to create the node with its properties:

const movie = new Cypher.Node();
const pattern = new Cypher.Pattern(movie, { labels: ["Movie"], properties: { title: "The Matrix" } });

const matchQuery = new Cypher.Create(pattern);

This generates the following CREATE clause:

CREATE (this:Movie {title: "The Matrix"})

Relationships

Relationships can be used in a match clause by creating the relevant Pattern:

const actedInPattern = new Cypher.Pattern(movieNode, { labels: ["Movie"] })
    .related({ type: "ACTED_IN" })
    .to(personNode, { labels: ["Person"] });

const create = new Cypher.Create(actedInPattern)

CREATE (this1:`Person`)-[this0:ACTED_IN]->(this2:`Movie`)

Update properties

Add the SET and REMOVE clauses with the methods .set and .remove respectively.

.set takes one or more tuples, each consisting of a property to update and a new value:

const createQuery = new Cypher.Create(new Cypher.Pattern(movie, { labels: ["Movie"] })).set([
    movie.property("title"),
    new Cypher.Param("The Matrix"),
]);

CREATE (this0:Movie)
SET this0.title = $param0

Multiple properties can be updated by passing multiple tuples.

.remove takes the properties to remove:

const createQuery = new Cypher.Create(new Cypher.Pattern(movie, { labels: ["Movie"] })).remove(
    movie.property("title"),
    movie.property("year")
);

CREATE (this0:Movie)
REMOVE this0.title, this0.year