Metacat

package edu.ucsb.nceas.metacat.index.annotation;

import java.io.File;

import com.hp.hpl.jena.query.Dataset;

import com.hp.hpl.jena.tdb.TDBFactory;

public class TripleStoreService {

	private static TripleStoreService instance;

	private TripleStoreService() {}

	public static TripleStoreService getInstance() {

		if (instance == null) {

			instance = new TripleStoreService();

		}

		return instance;

	}

	public Dataset getDataset() {

		String directory = "./tdb";

    	// for testing, delete the triplestore each time

    	File dir = new File(directory);

//    	if (dir.exists()) {

//    		dir.delete();

//    	}

		Dataset dataset = TDBFactory.createDataset(directory);

		return dataset;

	}

}