> It seems like this would require some sort of Java implementation? Yes, custom Java code would need to be written and tested etc.
On Fri, Aug 14, 2009 at 3:35 PM, Archon810<archon...@gmail.com> wrote: > > It seems like this would require some sort of Java implementation? > Unfortunately I'm not a Java developer but I am in charge of implementing > Solr. Any more detailed/straightforward instructions are very much > appreciated. > > Thank you. > > > Jason Rutherglen-2 wrote: >> >> You could implement optimistic concurrency? Where a version is >> stored in the document? Or using the date system you described. >> >> Override DirectUpdateHandler2.addDoc with the custom logic. >> >> It seems like we should have a way of performing this without >> custom code and/or an easier way to plug logic into >> UpdateHandler. Basic SQL like functions should be possible or >> simply a Lucene query (which can with QP2.0 support SQL like >> syntax). >> >> On Fri, Aug 14, 2009 at 3:18 PM, Archon810<archon...@gmail.com> wrote: >>> >>> I have a fairly simple need to do a conditional update in Solr, which is >>> easily accomplished in MySQL. >>> >>> For example, >>> >>> * I have 100 documents with a unique field called <id> >>> * I am POSTing 10 documents, some of which may be duplicate <id>s, in >>> which case Solr would update the existing records with the same <id>s >>> * I have a field called <dateCreated> and I would like to only update >>> a >>> <doc> if the new <dateCreated> is greated than the old <dateCreated> >>> (this >>> applies to duplicate <id>s only, of course) >>> >>> How would I be able to accomplish such a thing? >>> >>> The context is trying to combat race conditions resulting in multiple >>> adds >>> for the same ID but executing in the wrong order. >>> >>> Thanks. >>> >>> -- >>> View this message in context: >>> http://www.nabble.com/Solr-conditional-adds-updates--tp24979499p24979499.html >>> Sent from the Solr - User mailing list archive at Nabble.com. >>> >>> >> >> > > -- > View this message in context: > http://www.nabble.com/Solr-conditional-adds-updates--tp24979499p24979676.html > Sent from the Solr - User mailing list archive at Nabble.com. > >
