CODEWITHSUNDEEP
orientdb
OWADVL
OWADVL

Reputation: 11144

How do you make in Orientdb the edge to be unique

How do I make a Edge unique in Orientdb.

The solution that I came up with:

but it's not nice. Edge is without any properties.

Example:

create edge is_friend from #12:0 to #12:3

and if I call it again, there should be an error like when you make a unique index.

Thank you

enter image description here

Upvotes: 5

Views: 2054

Answers (1)

Lvca
Lvca

Reputation: 9060

Create a constraint on Edge out and in fields. For more information:

http://www.orientechnologies.com/docs/last/orientdb.wiki/Graph-Schema.html#constraints

In your case try this:

CREATE INDEX UniqueEdges ON is_friend (out, in) unique

Upvotes: 8

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