changeset 31:c572e86fb2fc

new

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/org/qmul/eecs/c4dm/sparql/utilities/SparqlWrapperMethods.java	Tue Jan 08 18:49:01 2013 +0000
@@ -0,0 +1,119 @@
+package org.qmul.eecs.c4dm.sparql.utilities;
+
+import com.clarkparsia.pellet.sparqldl.jena.SparqlDLExecutionFactory;
+import com.hp.hpl.jena.query.Query;
+import com.hp.hpl.jena.query.QueryExecution;
+import com.hp.hpl.jena.query.QueryExecutionFactory;
+import com.hp.hpl.jena.query.QueryFactory;
+import com.hp.hpl.jena.query.ResultSet;
+import com.hp.hpl.jena.query.ResultSetFormatter;
+import com.hp.hpl.jena.query.Syntax;
+import com.hp.hpl.jena.rdf.model.Model;
+import com.hp.hpl.jena.rdf.model.Statement;
+import com.hp.hpl.jena.rdf.model.StmtIterator;
+
+public class SparqlWrapperMethods {
+
+	/**
+	 * @param query
+	 * @param m
+	 * @return
+	 */
+	public static Model executeConstructQuery(String query, Model m) {
+
+		// Now read the query file into a query object
+		Query q = QueryFactory.read(query, Syntax.syntaxARQ); // only required
+																// if using
+																// (e.g.) LET in
+																// SPARQL
+
+		QueryExecution qe = QueryExecutionFactory.create(q, m);
+
+		// We want to execute a CONSTRUCT query, do it, and return the new
+		// triples
+		Model newModel = qe.execConstruct();
+
+		// Print the query for better understanding
+		System.out.println(q.toString());
+
+		// Print the new triples
+		StmtIterator iter = newModel.listStatements();
+		printStmts(iter);
+
+		return newModel;
+	}
+
+	/**
+	 * @param query
+	 * @param m
+	 */
+	public static void queryTheModel(String query, Model m) {
+
+		// Now read the query file into a query object
+		Query q = QueryFactory.read(query, Syntax.syntaxARQ); // only required
+																// if using
+																// (e.g.) LET in
+																// SPARQL
+
+		// Create a SPARQL-DL query execution for the given query and
+		// ontology model
+		QueryExecution qe = SparqlDLExecutionFactory.create(q, m);
+
+		// We want to execute a SELECT query, do it, and return the result set
+		ResultSet rs = qe.execSelect();
+
+		// Print the query for better understanding
+		System.out.println(q.toString());
+
+		// There are different things we can do with the result set, for
+		// instance iterate over it and process the query solutions or, what we
+		// do here, just print out the results
+		ResultSetFormatter.out(rs);
+
+		// And an empty line to make it pretty
+		System.out.println();
+	}
+
+	/**
+	 * @param query
+	 * @param m
+	 */
+	public static void askTheModel(String query, Model m) {
+
+		// Now read the query file into a query object
+		Query q = QueryFactory.read(query);
+
+		// Create a SPARQL-DL query execution for the given query and
+		// ontology model
+		QueryExecution qe = SparqlDLExecutionFactory.create(q, m);
+
+		// We want to execute a SELECT query, do it, and return the result set
+		boolean result = qe.execAsk();
+
+		// Print the query for better understanding
+		System.out.println(q.toString());
+
+		// Print the result
+		System.out.println("Result: " + result);
+
+		// And an empty line to make it pretty
+		System.out.println();
+	}
+
+	/**
+	 * @param iter
+	 */
+	private static void printStmts(StmtIterator iter) {
+		Statement statement;
+
+		while (iter.hasNext()) {
+			statement = iter.nextStatement();
+			System.out.println(" | <" + statement.getSubject() + "> | <"
+					+ statement.getPredicate() + "> | <"
+					+ statement.getObject() + "> | ");
+		}
+
+		// And an empty line to make it pretty
+		System.out.println();
+	}
+}