links statement
The statement <RELATION VAR> links (<ROLE>: <PLAYER VAR> [ , … ]) is used to identify the <PLAYER VAR> as playing <ROLE> in the <RELATION
VAR>.
Inserting a role player
The links keyword can be used to attach a role player to a relation instance.
insert $friendship links (friend: $person);Multiple role players can be attached in the same statement.
insert $friendship links (friend: $alice, friend: $bob);Deleting a role player
The links keyword is used to remove a role player from a relation instance.
delete links ($person) of $friendship;Multiple role players can be removed in the same statement.
delete links ($alice, $bob) of $friendship;Matching role players
The links keyword can be used to match relations along with their role players.
match $friendship links (friend: $person);The role specifiers may be variables as well.
match $friendship links ($role: $person);Note that the role label is not required.
match $friendship links ($person);If a relation binding is not required, the relation type shorthand can be used directly instead.
match friendship ($alice, $bob);