neo4j

Dry Run

Generate cypher without running it.

The unsafe flag is required to inline parameters.

Beware of cypher injection, use schemas to restrict the shape of the source data.

transmute graph \
--accept 'application/vnd.transmute.cypher' \
--input  'examples/vcdm/did.jsonld' \
--unsafe

Importing JSON-LD

Controller Documents

application/did+ld+json

transmute graph \
--env '.env' \
--input  'examples/vcdm/did.jsonld'

application/did+json

transmute graph \
--env '.env' \
--input  'examples/vcdm/did.json'

Credentials

application/vc+ld+json

transmute graph \
--env '.env' \
--input  'examples/vcdm/credential-with-location.json'

application/vc+ld+jwt

transmute graph \
--env '.env' \
--input  'examples/vcdm/credential.jwt.flat.json'

Presentations

application/vp+ld+json

transmute graph \
--env '.env' \
--input  'examples/vcdm/presentation-with-location.json'

application/vp+ld+jwt

transmute graph \
--env '.env' \
--input  'examples/vcdm/presentation.jwt.flat.json'

Cypher Examples

Get Holder Location

MATCH (holder:`https://www.w3.org/2018/credentials#holder`)-[:Location]->(place:`https://schema.org/Place`)
MATCH (place)-[:Geo]->(point:`https://schema.org/GeoCoordinates`)
RETURN holder, point

Get Issuer Location

MATCH (issuer:`https://www.w3.org/2018/credentials#issuer`)-[:Location]->(place:`https://schema.org/Place`)
MATCH (place)-[:Geo]->(point:`https://schema.org/GeoCoordinates`)
RETURN issuer, point

Get Distance Between Issuer and Holder

MATCH (issuer:`https://www.w3.org/2018/credentials#issuer`)-[:Location]->(p1:`https://schema.org/Place`)
MATCH (p1)-[:Geo]->(p2:`https://schema.org/GeoCoordinates`)
MATCH (holder:`https://www.w3.org/2018/credentials#holder`)-[:Location]->(p3:`https://schema.org/Place`)
MATCH (p3)-[:Geo]->(p4:`https://schema.org/GeoCoordinates`)
WITH
  point({longitude: toFloat(p2.`https://schema.org/longitude`), latitude: toFloat(p2.`https://schema.org/latitude`)}) AS issuerPoint,
  point({longitude: toFloat(p4.`https://schema.org/longitude`), latitude: toFloat(p4.`https://schema.org/latitude`)}) AS holderPoint
RETURN round(point.distance(issuerPoint, holderPoint)) AS presentationDistance

Presentation

transmute graph \
--env '.env' \
--input  'examples/neo4j/example-0.json'

Traceable Presentations

transmute graph \
--env '.env' \
--input  'examples/neo4j/simple-presentation-with-errors.json'

transmute graph \
--env '.env' \
--input  'examples/neo4j/simple-presentation-making-corrections.json'

Credential with 2 Schemas

transmute graph \
--env '.env' \
--input  'examples/neo4j/credential-schema.0.json'