Function setRelationalHandlerDependencies

Configure the handler with a relational backend implementation.

Example put event: { "action": "edge/put", "edge": { "key": { "from": "a", "to": "b", "relation": "owns" } } }

Example remove event: { "action": "edge/remove", "key": { "from": "a", "to": "b", "relation": "owns" } }

Example query event: { "action": "edge/query", "direction": "out", "entityId": "a", "relation": "owns", "limit": 25 }