There are mechanisms implemented to help you out there, which are: * If a non-existent node/relationship is encountered during a query it will be ignored as well as added to a delete-later-list. * When a write transaction is about to commit, any items in the delete-later-list will be added to it as well, deleting them for real from the index.
These two help clean up the index, but you should try to do it pro-actively yourself... or, of course there's auto-indexing. 2011/9/7 Nuo Yan <[email protected]> > Thanks. That was what I imagined too. However, I have a test that does: > > 1. create two nodes (e.g. node 2 and node 3) > 2. create a relationship between the two nodes (e.g. rel id 23, type :foo) > 3. add the relationship to the foo_rels index, with 2 as the key, 3 as the > value (the node ids) on rel id 23. > (In REST it's a POST to /index/relationship/foo_rels/2/3 with the URI of > the relationship 23 as the body) > 4. look up the relationship from the index, returned expected result (GET > to /index/relationship/foo_rels/2/3). > 5. delete the relationship (id 23) (a DELETE to /relationship/23) > 6. look up the relationship from the index again (GET to > /index/relationship/foo_rels/2/3), returned empty results ([]). > > The result of the test confused me. It appears that the relationship was > also removed from the index (as step 6 returned empty array) when it was > deleted. > > Any insights? > > > > > On Sep 6, 2011, at 7:05 PM, Linan Wang wrote: > > > as far as i know, no. you need to do it yourself. > > hint: http://docs.neo4j.org/chunked/1.4.1/indexing-update.html > > > > On Wed, Sep 7, 2011 at 1:25 AM, Nuo Yan <[email protected]> wrote: > >> Hey guys, > >> > >> When a relationship gets deleted, will it be removed from the index > >> automatically? My test shows yes, but I want to be absolutely certain. > >> > >> For example, a relationship :foo exists between node A and B and it's > >> indexed on the foo_rels index with key node_a's id and value node_b's > id. > >> When I delete this relationship, do I also have to manually remove it > from > >> the index (i.e. a DELETE to /index/relationship/foo_rels/15/23/100 where > 15 > >> is the key, 23 is the value, 100 is the relationship id)? > >> _______________________________________________ > >> Neo4j mailing list > >> [email protected] > >> https://lists.neo4j.org/mailman/listinfo/user > >> > > > > > > > > -- > > Best regards > > > > Linan Wang > > _______________________________________________ > > Neo4j mailing list > > [email protected] > > https://lists.neo4j.org/mailman/listinfo/user > > _______________________________________________ > Neo4j mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user > -- Mattias Persson, [[email protected]] Hacker, Neo Technology www.neotechnology.com _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
