Hi Arin, Maye we should document this more, but you shouldn't use that class. Instead, take a look at the LuceneIndexService and see how that works out for you.
2009/12/10 Arin Sarkissian <[email protected]>: > Hey guys, > > I'm pretty new to Neo4j, especially the indexing stuff. > > Here's my situation. I want to be able to get nodes via one of their > properties; in this case let's say the Nodes represent a user & I want > to be able to grab a User's node via their username. > > So, my initial attempt may be naive (no batching etc) but I've been > reading thru a a large text file (CSV format: username, userid), > creating a node for each of these lines & indexing the username > component. > > Now this needs to be unique (given that usernames are unique) so I've > been using the SingleValueIndex and have run into a problem: It looks > like the SingleValueIndex actually does allow multiple values for a > given lookup (ex: username = phatduckk) however when trying to fetch a > Node from the index that has multiples (ie: username=phatduckk was > indexed twice) I get a NotFoundException with "More than one > relationship xxxx" as the message. > > I have posted a skeleton piece of code that surfaces this problem over > at: http://gist.github.com/253553 > This code does not make sure that the Node being indexed for a key is > always the same - it actually does the opposite: it tries to index > username=phatduckk w/ a different node each time. > > The bit of code at http://gist.github.com/253569 does the opposite: i > tries to index the same node for the index username=phatduckk each > time. > > I also have a few random questions sprinkled in the code as comments > which illustrate my noobiness =) > > Honestly, I'm not claiming this is a bug - I may be completely > misusing and misunderstanding the indexing functionality but with my > limited experience it doesn't seem that SingleValueIndex is "single" > at all (hopefully - i'm just wrong and made a dumb mistake). > > Thanks for the help guys, > Arin > _______________________________________________ > Neo mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user > -- Mattias Persson, [[email protected]] Neo Technology, www.neotechnology.com _______________________________________________ Neo mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
