Thank you for the references to pursue. My apologies for posting the wrong list.
-----Original Message----- From: Andy Seaborne [mailto:[email protected]] On Behalf Of Andy Seaborne Sent: Saturday, January 19, 2013 5:32 AM To: [email protected] Subject: Re: remote loading question On 19/01/13 12:42, Andy Seaborne wrote: > > On 19/01/13 01:59, Thomsen, Mark wrote: >> We have an application server on each of several computer systems, >> and wish to have a TDB/Fuseki server on another computer system, all >> on a common LAN. Some of the application servers will execute >> transactions that involve loading new named graphs (RDF/XML files >> local to the application servers) onto the TDB. TDB files are local >> to the TDB/Fuseki server's computer system (and remote from the >> application servers). The application is written in Java. >> >> If all of the moving parts are on a single, common computer system >> there are multiple options found in the documentation, from the >> tdbloader scripts to (Java program executes it as a command) to >> something like Model.read( ... ). >> >> In our case the moving parts are distributed. Model.read( ... ) is >> preferable, but it does not appear to work remotely. >> >> What are the options for loading the RDF/XML file's data onto a >> remote TDB? >> >> Can someone point to an example or tutorial for this case. I've >> looked and have not found an online resource. >> > > (The users list is users AT jena.apache.org ) > > This is what the SPARQL Graph Store HTTP Protocol is for. You can add > graphs into a Fuseki/TDB server. > > http://www.w3.org/TR/sparql11-http-rdf-update/ > > PUT http://server/dataset?graph=http://example/MyName > Content-type: application/rdf+xml > ... > > There is a class to help DatasetAccessor (which is in the wrong > package > - org.apache.jena.fuseki.http for historical reasons) but the app > would need to read in the data. > > By using directly, you can setup the HTTP operation and just > read/write the file to the HTTP connection. > > You can also use SPARQL Update but that requires translating the input > data into a INSERT DATA statement. > > There is "LOAD" but it read URLs, not (remote) files. > > Andy PS There are some scripts for the Graph Store Protocol (GSP) for REST-ish operations: s-put, s-get, s-post, s-delete http://jena.apache.org/documentation/serving_data/soh.html and a Fuseki server does support regular HTML/HTTP file upload (see the HTML UI - you can drive this programmatically quite easily). Andy
