Hey Sergio > Hi Joshua, > > On Mon, Sep 14, 2015 at 5:29 PM, Joshua Dunham <joshua_dun...@vrtx.com> wrote: > Two questions for the marmotta community, > > 1: Can someone shed some more light on kiwi's database.mode option? I could > find little more than the options to choose (create update, validate, off). > > Honestly It's normal that you're confused. Because I have to admit that such > configuration is not used anymore in Marmotta, and it doesn't have any effect. > > The story behind is simple: It comes from the old LMF times when we used a > JPA-based method for mapping to the database. But after moving away from that > setup, now we directly do the mappings in a more efficient (and complex) way, > we kept it in some place of the admin interface, but it should be removed to > avoid any confusion. > > I already created MARMOTTA-616 for that: > https://issues.apache.org/jira/browse/MARMOTTA-616
Gotcha. > 2: I'm trying to update some fields in marmotta via the import folder > functionality. Is it possible to use this feature (solely) and do a > delete/insert? Or is the import folder insert only? Basically I'm going to > drop in nearly the same .ttl or .nt with some slight changes each cycle and > want to delete the old import first? > > No, import only adds triples, it doesn't remove triples that are missing in > the new file. RDF doesn't work in that way. > > What I'd use for such scenario is the import folder feature in combination > with the graph store protocol, so: > > * You import data to a dedicated context (named graph); i.e., copy files to > /path/to/marmotta/import/<NAME> > > * If you want to "overwrite" the data, drop the context with a DELETE HTTP > request (with curl, for instance) to http://host/marmotta/context/<NAME> > > Here the documentation about those two features: > > http://wiki.apache.org/marmotta/ImportData#Import_data_via_the_local_directory > http://www.w3.org/TR/sparql11-http-rdf-update/#http-delete > > Hope that helps. If you' d need more documentation, either by mail or > improving the current one, just ask here. I thought that would be the best way but considering there is some extra import functionality (lock and config files) I figured I'd ask. In the long term I'm hoping to write a module for Apache Manifold CF so pushing current states into Marmotta easier. Currently I'm using some crafted SQL and the file writer output to make turtle files in the import folder and it works 'ok' for update but obviously not delete update. In this case Manifold will only write out what has changed so my approach is to write out the files with the subject and context so I can delete only that one subject by feeding the subject into the correct context aware delete script (python). Since I know the shape of the incoming data (the subject and predicates) it's not an issue. By using SPARQL delete messages I'll need to copy the files outside of the import folder and have that delete script remove the all the subject-predicate statements and then import the new data. Just annoying to have the extra process but hopefully I can get a purposeful module into ManifoldCF at some point. A bit ago you volunteered to share some helper script files that I guess you had developed to do quick things with Marmotta, is that offer still available? :) > Cheers, > > -- > Sergio Fernández > Partner Technology Manager > Redlink GmbH > m: +43 6602747925 > e: sergio.fernan...@redlink.co > w: http://redlink.co -J This email message and any attachments are confidential and intended for use by the addressee(s) only. If you are not the intended recipient, please notify me immediately by replying to this message, and destroy all copies of this message and any attachments. Thank you.
