OK. Hopefully you'll find the third paragraph a bit confusing. I neglected to edit the first sentence, so it should read:
An example: Suppose you want to create a TDB database with multiple named graphs, including one named http://myorg.org/gr1. I'll start by creating a TDB database. Suppose you have a project named "TestProject". Right-click on the project name, select New > OWL/RDF Jena TDB Database, and specify the following in the wizard fields: File name: myTDB Base URI: http://myorg.org/tdb/myTDB Named Graph: Path to (shared)…: -- Scott On Mar 23, 2:32 pm, Tim Darr <[email protected]> wrote: > Thanks, Scott, > > I think this answers my questions. I will need to do some experimentation > and will get back to you if I run into problems. > > On Wed, Mar 23, 2011 at 2:10 PM, Scott Henninger <[email protected] > > > > > wrote: > > Tim; A bit more on this that you may find useful. First, named > > graphs, in the sense that N3 proposals define named graphs, is not a > > standard and not currently supported. There is some confusion about > > this. Watch the RDF working group to see what might get adopted in > > the future -http://www.w3.org/2011/01/rdf-wg-charter. > > > There are a number of triple stores that support "named graphs" (aka > > quad stores) - TBS supports TDB, SDB, AllegroGraph, Sesame and Oracle > > ("internal Oracle model name" is basically a named graph). When > > creating a connector file for any of these data stores, you can > > specify the named graph. Then you use this connector to directly > > access and modify the named graph. > > > An example: Suppose you had a TDB database with a graph named > >http://myorg.org/gr1. I'll start by creating a TDB database. Suppose > > you have a project named "TestProject". Right-click on the project > > name, select New > OWL/RDF Jena TDB Database, and specify the > > following in the wizard fields: > > File name: myTDB > > Base URI:http://myorg.org/tdb/myTDB > > Named Graph: > > Path to (shared)…: > > > This will create a folder at /TestProject/myTDB.tdb.data that holds > > files representing data. To create a named graph in that database, > > create another connector by right-clicking on the project name, select > > New > OWL/RDF Jena TDB Database, and specify the following in the > > wizard fields: > > File name: myTDBgraph_1 > > Base URI:http://myorg.org/tdb/myTDBgraph1 > > Named Graph:http://myorg.org/gr1 > > Path to (shared)…: /TestProject/myTDB.tdb.data > > > The resulting .tdb file (myTDBgraph_1.tdb) is a connector that goes > > directly to the named graph. The connector has a base URI (http:// > > myorg.org/tdb/myTDBgraph1) that points to the data store (TDB) and the > > named graph in that data store (http://myorg.org/gr1). This gives you > > a lot of flexibility, as you can now use this .tdb connector to > > perform operations directly on the named graph. You can import > > the .tdb file, use it in SPARQLMotion scripts, etc., and you will > > alway operate on just those triples in the named graph. > > > For example, if you open the myTDBgraph_1.tdb file in Composer, only > > data from the "myTDB.tdb.data ->http://myorg.org/gr1"; graph is shown > > in the TBC interface. Editing this file in Composer or Ensemble > > changes data in that named graph only. As Gokhan states, you can also > > use "INSERT INTO <http://myorg.org/tdb/myTDBgraph1>" to insert data > > via SPARQL. Note that the .tdb file's URI is used - the name of the > > graph is accessible only by going through the data store, and the .tdb > > connector takes care of those details for you. > > > You can create as many named graphs as you need specifying / > > TestProject/myTDB.tdb.data as the path to the database. > > > Hopefully that is enough to get you started, and we'd be happy to take > > follow-up questions. > > > -- Scott > > > On Mar 19, 4:05 pm, Gokhan Soydan <[email protected]> wrote: > > > Hello Tim, > > > > Here are the answers to your questions: > > > > 1-) In TopBraid Composer, you can specify a named graph as the baseURI > > > or some other URI depending on the repository in export or import > > > wizards. At the repository level, if it is a quad store, then there > > > would be quads with the named graph URI, subject, predicate and object. > > > > 2-) In TopBraid Composer, "INSERT INTO <named-graph-URI>" would get the > > > resulting triples into the named graph with the specified > > > <named-graph-URI>, if the named graph exists within the workspace. That > > > named graph would usually be the base URI of an .owl, .ttl or .n3 file > > > or .oracle, .sdb, .tdb or .allegro connection file. > > > > Outside TopBraid Composer, each semantic repository have their own > > > implementation of named graphs. > > > > Gokhan > > > > On 3/19/2011 9:26 AM, Tim Darr wrote: > > > > > I conceptually understand named graphs, but I cannot seem to find any > > > > basic information about how to use them. My two based questions are: > > > > 1 - I understand that named graphs are referenced by a URI. Do I first > > > > need to create an instance of a "named graph" in order to insert > > > > triples into it? If so, is there a "named graph" class? If not, will > > > > any old class do? > > > > 2 - Once I have a named graph, how do I get triples into it? It looks > > > > like CONSTRUCT won't do. Is INSERT INTO the right methd? > > > > > What I am wanting to do it have multiple named graphs in a single Jena > > > > TDB store (or AllegroGraph, or OWL / N3 / etc. file). I just can't > > > > seem to figure out how to get things up and running. > > > > > Any reference to "named graphs" for dummies will do. > > > > > -Thanks- > > > -- > > You received this message because you are subscribed to the Google > > Group "TopBraid Suite Users", the topics of which include TopBraid > > Composer, > > TopBraid Live, TopBraid Ensemble, SPARQLMotion and SPIN. > > To post to this group, send email to > > [email protected] > > To unsubscribe from this group, send email to > > [email protected] > > For more options, visit this group at > >http://groups.google.com/group/topbraid-users?hl=en > > -- > Tim Darr > [email protected] -- You received this message because you are subscribed to the Google Group "TopBraid Suite Users", the topics of which include TopBraid Composer, TopBraid Live, TopBraid Ensemble, SPARQLMotion and SPIN. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/topbraid-users?hl=en
