Examples of org.openrdf.sail.SailConnection.evaluate()

org.openrdf.sail.SailConnection.evaluate()

Evaluates the supplied TupleExpr on the data contained in this Sail object, using the (optional) dataset and supplied bindings as input parameters. @param query The query to evaluate. @param bindings A set of input parameters for the query evaluation. The keys reference variable names that should be bound to the value they map to. @param includeInferred Indicates whether inferred triples are to be considered in the query result. If false, no inferred statements are returned; if true, inferred statements are returned if available @return The TupleQueryResult. @throws StoreException If the Sail object encountered an error or unexpected situation internally.

                BindingSet bs = new MapBindingSet();
                SailConnection sc = c.getSailConnection();
                try {
                    sc.begin();
                    CloseableIteration<? extends BindingSet, QueryEvaluationException> results
                            = sc.evaluate(q.getTupleExpr(), q.getDataset(), bs, false);
                    try {
                        while (results.hasNext()) {
                            BindingSet r = results.next();
                            String timestamp = ((Literal) r.getBinding(TIMESTAMP).getValue()).getLabel().replaceAll("\t", " ");
                            String location = ((Literal) r.getBinding(LOCATION).getValue()).getLabel().replaceAll("\t", " ");

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