for (Relationship r : n.getRelationships(dir, type)) if (r.getOtherNode(n).equals(m)) return true;
Sent from mobile device Am 06.07.2014 um 17:09 schrieb Frandro <[email protected]>: > I'm running embedded. How'd the code for core API be like? > > 2014년 7월 6일 일요일 오후 11시 28분 49초 UTC+9, Michael Hunger 님의 말: >> >> If you're running embedded anyway, then I'd use core API for this check, not >> cypher >> >> If you use cypher >> >> - use parameters >> - use match not where >> >>> START n1=node({id1}), n2=node({id2}) >>> match (n1)-[:%s]-(n2) >>> RETURN true >> Limit 1 >> >> Or rather for 2.x >> >>> match (n1)-[:%s]-(n2) >> Where id(n1)={id1} and id(n2)={id2} >>> RETURN true >> Limit 1 >> >> Sent from mobile device >> >> Am 06.07.2014 um 11:37 schrieb Frandro <[email protected]>: >> >>> The following query is that I use to check existence of an edge between the >>> two nodes, n1 and n2. >>> >>> It seems the query costs a lot. >>> >>> Is this optimized or not? Is there a better way to find it out? >>> >>> String query = String.format("START n1=node(%d), n2=node(%d) WHERE >>> n1-[:%s]-n2 RETURN count(*) as count_edges", nodeId1, nodeId2, edgeType); >>> >>> >>> ExecutionResult result = engine.execute(queryString); >>> int countEdges = >>> Integer.valueOf(result.columnAs("count_edges").next().toString()); >>> >>> if (countEdges > 0) >>> return true; >>> >>> return false; >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "Neo4j" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to [email protected]. >>> For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "Neo4j" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Neo4j" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
