On Wed, Jun 17, 2009 at 10:38 AM, Anders Nawroth<[email protected]> wrote: > Hi! > > Macarse wrote: >> 1) >> Emulating a count(*). >> I did this: http://pastebin.com/f276fd2c7 but it takes some time and >> it doesn't look like a good solution. >> Which is the best way? >> > > The code uses traversals to infinite depth, which of course comes at a > cost even when using Neo4j (and I think this has very little in common > with count(*) which only counts to depth one!). How many nodes are > typically traversed by your code? How much time is spent per node in the > traversal? >
My code so far: http://pastebin.com/d44ceab73 (Sorry, it's in spanish) Output: La db se creó en 9112 ms. Amigos de: Roberto Carlos Cantidad de amigos 100000 La consulta se hizo en 1826 ms. How much time is spent per node in the traversal: 0.01826 ms. Translation: The db was created in 9112 ms. Roberto Carlos' friends: Friends quantity: 100000 The query took 1826 ms. How much time is spent per node in the traversal: 0.01826 ms. >> Does the following make any sense? >> Robert connected to the place and therefore to people living there. >> (Robert <--- friend with people living in ---> Argentina; Charly <--- >> lives in ---> Argentina) >> > > Makes sense to me. One detail: make sure to use directed edges where it > fits your domain when presenting this stuff! :-) > Is there another way of creating relations than with createRelationshipTo() ? I didn't understand that. >> 3) >> Is there a way to create something similar to an schema to generate the db? >> Robert has almost 100k friends :( >> > > Then Robert has to be a very nice guy ;-) > > If you have the data in a RDBMS you should take a look at the SQL > importer being developed right now: > http://wiki.neo4j.org/content/Neo_-_SQL_importer > Not really, I am just generating random data but I will take a look. > > > /anders > > > > _______________________________________________ > Neo mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user > Setting objects as properties? I've tried: robertoCarlos.setProperty("clase", new Number(3)); where number is a class having a private int num inside. I get: java.lang.IllegalArgumentException: Unkown property type on: org.robertocarlos.num...@e5b723 Why is that? I can't save any kind of object? Thanks for reading! _______________________________________________ Neo mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
