On Fri, Nov 20, 2009 at 7:58 PM, Peter Neubauer <[email protected]> wrote: > Laurent, > the reference node does not _have_ to have a relationship, although it > is not recommended not to do so.
But all my DB *will* have a reference node with relationship, so it's safe to assume that a DB with a reference node without relastion ship : - is an empty DB or - is a broken DB I'm a sysadmin/dba, not a java coder. and i'm not into "generic" stuff. I know too much about the pain of denormalizing a production database that must never stop. If it's optimized for my platform, it's good enough for me :) > Another way to do this is to see if there are any relationships/nodes > in use. This is not the official API, but there is the possibility to > get a TransactionManager and the number of IDs in use: > > EmbeddedNeo.getConfig().getNeoModule().getNodeManager().getNumberOfIdsInUse(Nodes.class) > > This is not exposed in the external API and would require you , but it > might help you in your case. We are trying to get the Config API into > the 1.0 release, but don't count on it! Thx for the tips. I won't use it, i'll use only the "stable" api. My neo4j database won't be "critical" for the production, it can go down and/or crash at anytime without breaking the production platform. But... populating this database will take a lot of time and some usefull ressource. So i'll try to not break it by using a too unstable api :) I'm not 100% sure about the content of every node. But i think about a few GB at minimum... up to hundred's of GB. I'll see... it's a R&D project anyway. But if it perform well and efficiently (i mean : faster and cheaper in ressource than doing the same thing on our postresql cluster) the database could be well over 100GB, not including FTS index that i'm planning to use too :) I'm not 100% sure about what i'm doing here, that's all the fun of R&D. Be sure that you will have as much feedback as possible as long as it doesn't disclose the goals of the projects and the content of my database (NDA, etc ...) *hugs* thank you for your replies. -- ker2x _______________________________________________ Neo mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
