Indexing Triples with LARQ

[Mariacruz Jerald <ma...@nxp.com>]

Hi,
I'm new to LARQ. I have a code for indexing triples using LARQ.

public void indexTriples() {
try {
model = ModelFactory.createDefaultModel();

IndexBuilderString larqBuilder = new IndexBuilderString("path where the index will be stored");
model.register(larqBuilder);
FileManager.get().readModel(model, "path of file containg triples ");
larqBuilder.closeWriter();
model.unregister(larqBuilder);
IndexLARQ index = new IndexLARQ(IndexReader.open("path where the index is stored"), new StandardAnalyzer());
LARQ.setDefaultIndex(index);


} catch (Exception e) {
System.out.println("Exception caught： " + e.toString());
}

}


It's creating a index file in specified folder.
But what I want is to read these index files into a model and then want to query model. Otherwise each time I run this code , it indexes all the data again.

Is is possible to read these index files into a jena model??

Re: Indexing Triples with LARQ

[Andy Seaborne <an...@apache.org>]

On 04/03/14 08:52, Mariacruz Jerald wrote:
> Hi,
> I'm new to LARQ. I have a code for indexing triples using LARQ.
> 
> public void indexTriples() {
> try {
> model = ModelFactory.createDefaultModel();
> 
> IndexBuilderString larqBuilder = new IndexBuilderString("path where the index will be stored");
> model.register(larqBuilder);
> FileManager.get().readModel(model, "path of file containg triples ");
> larqBuilder.closeWriter();
> model.unregister(larqBuilder);
> IndexLARQ index = new IndexLARQ(IndexReader.open("path where the index is stored"), new StandardAnalyzer());
> LARQ.setDefaultIndex(index);
> 
> 
> } catch (Exception e) {
> System.out.println("Exception caught： " + e.toString());
> }
> 
> }
> 
> 
> It's creating a index file in specified folder.
> But what I want is to read these index files into a model and then want to query model. Otherwise each time I run this code , it indexes all the data again.
> 
> Is is possible to read these index files into a jena model??
The text indexed are in the Lucene files.


As per my answer to Harkishan Singh

http://answers.semanticweb.com//questions/26764/indexing-triples-with-larq

(exactly the same question text)

LARQ has been superceded by the jena-text module.

If you have an in-memory RDF graph, use in-memory Lucene and index every
run.  Otherwise, use a persistent graph and persistent Lucene, and load
once.

	Andy