Graph::Client

Client to the datastore-backend.

Installation

gem install graph-client

Usage

Create a client

# connect to local
client = Graph::Client.new('http://graph-backend.dev')

Roles

List all UUIDs with a role

client.uuids_by_role(token, role)

Add a role

client.add_role(uuid, token, 'developer')

Remove a role

client.remove_role(uuid, token, 'developer')

Relationships

Check for a relationship

client.related?(uuid1, uuid2, token, 'develops')

Get a relationship's meta data

Returns a Hash with the meta data or nil if the relationship does not exist.

client.relationship_metadata(uuid1, uuid2, token, 'develops')

Change a relationship's meta data

Returns normal information on the relationship. The same data you get when adding a relationship.

client.change_relationship(uuid1, uuid2, token, 'develops', {location: "Berlin"})

Add a relationship

options = {direction: 'both'}
client.add_relationship(uuid1, uuid2, token, 'develops', options)

Available options:

• direction: Direction of the relationship. Possible values: outgoing (default), incoming and both
• meta: Meta information to this relationship. Must be a shallow, one level deep hash (works: {location: 'Rome'} does not work: {location: {city: 'Rome'}}).

Issue a cypher query

client.query(token, [player_uuid], "MATCH node0-[:friends]->()-[:friends]->fof RETURN fof.uuid")

Remove a relationship

client.remove_relationship(uuid1, uuid2, token, 'develops')

List related entities to an entity

client.list_related_entities(uuid, token, 'develops', options) # => [uuid1, uuid2]

Available options:

• direction: Direction of the relationships. Possible values: outgoing (default), incoming and both

Remove an entity and all of it's relations

client.delete_entity(uuid, token)