No worries. Added the issue here https://github.com/neo4j/neo4j/issues/1876
Thanks for the help Peter :) Jon On Tuesday, 28 January 2014 13:55:29 UTC+1, Peter Neubauer wrote: > > Hi Jon, > yes, this looks like a bug, could you please file one? have done a gist on > it, see http://gist.neo4j.org/?8667135 > > /peter > > > G: neubauer.peter > S: peter.neubauer > P: +46 704 106975 > L: http://www.linkedin.com/in/neubauer > T: @peterneubauer > > Neo4j 2.0.0 - > (graphs)-[:FOR]->(everyone)<http://blog.neo4j.org/2013/12/neo4j-20-ga-graphs-for-everyone.html> > Kids LAN creative party in Malmö - Kidscraft ICE <http://kidscraft.se> > > > On Mon, Jan 27, 2014 at 4:40 PM, Jon Packer <con...@jonpacker.com<javascript:> > > wrote: > >> Hi! >> >> I'm trying to do some property updates with an OPTIONAL MATCH, and >> having a bit of trouble. It's OK when the OPTIONAL MATCH's pattern >> matches something, but when it doesn't, I get a "ThisShouldNotHappenError" >> with the message "Developer: Stefan claims that: This should be a node >> or a relationship". >> >> For example, given a graph that looks something like this: >> >> (node:TestThing1)-[:rel1]->(node2)-[:rel2]->(node3) >> >> The following works: >> >> MATCH (n:TestThing1) OPTIONAL MATCH n-[:rel1]->x SET x.updated = >> timestamp() >> >> but the following will throw the aforementioned exception: >> >> MATCH (n:TestThing1) OPTIONAL MATCH n-[:rel2]->x SET x.updated = >> timestamp() >> >> I would have expected that it would silently do nothing at all when the >> OPTIONAL MATCH condition does not match anything, or to have to >> explicitly specify that the SET should not proceed when "x" is null. As far >> as I can tell there's no way for me to do the latter without affecting >> "n"'s value. >> >> I am using OPTIONAL MATCH because this is in the context of a larger >> query, which I've omitted here for clarity's sake, but for that reason I >> can't solve this problem by just using a normal MATCH instead. >> >> -- >> 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 neo4j+un...@googlegroups.com <javascript:>. >> For more options, visit https://groups.google.com/groups/opt_out. >> > > -- 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 neo4j+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
