Examples with SailException org.openrdf.sail.SailException used on opensource projects

Example 36 with SailException

use of org.openrdf.sail.SailException in project blueprints by tinkerpop.

the class SailTest method showNamespaces.

private void showNamespaces(final SailConnection c) throws SailException {
    System.out.println("namespaces:");
    CloseableIteration<? extends Namespace, SailException> iter = c.getNamespaces();
    try {
        while (iter.hasNext()) {
            Namespace n = iter.next();
            System.out.println("\t" + n.getPrefix() + ":\t" + n.getName());
        }
    } finally {
        iter.close();
    }
}

Example 37 with SailException

use of org.openrdf.sail.SailException in project blueprints by tinkerpop.

the class PropertyGraphSailConnection method evaluateInternal.

protected CloseableIteration<? extends BindingSet, QueryEvaluationException> evaluateInternal(final TupleExpr query, final Dataset dataset, final BindingSet bindings, final boolean includeInferred) throws SailException {
    try {
        TripleSource tripleSource = new SailConnectionTripleSource(this, context.valueFactory, includeInferred);
        EvaluationStrategyImpl strategy = new EvaluationStrategyImpl(tripleSource, dataset);
        return strategy.evaluate(query, bindings);
    } catch (QueryEvaluationException e) {
        throw new SailException(e);
    }
}

Example 38 with SailException

use of org.openrdf.sail.SailException in project blueprints by tinkerpop.

the class PropertyGraphSailConnection method getStatements_xPO.

private CloseableIteration<Statement, SailException> getStatements_xPO(final URI predicate, final Value object) throws SailException {
    if (predicate.equals(RDF.TYPE)) {
        if (object.equals(PropertyGraphSail.VERTEX)) {
            Source<Vertex> s = new Source<Vertex>(context.graph.getVertices().iterator(), vertexTypes);
            return new StatementIteration(s);
        } else if (object.equals(PropertyGraphSail.EDGE) && firstClassEdges) {
            Source<Edge> s = new Source<Edge>(context.graph.getEdges().iterator(), edgeTypes);
            return new StatementIteration(s);
        } else {
            return new StatementIteration();
        }
    } else if (predicate.equals(PropertyGraphSail.ID)) {
        Object id = literalToObject(object);
        if (null == id) {
            return new StatementIteration();
        } else {
            Vertex v = context.graph.getVertex(id);
            Edge e = firstClassEdges ? context.graph.getEdge(id) : null;
            if (null == v && null == e) {
                return new StatementIteration();
            } else {
                Collection<Statement> s = new LinkedList<Statement>();
                if (null != v) {
                    vertexIds.generate(v, s);
                }
                if (null != e) {
                    edgeIds.generate(e, s);
                }
                return new SimpleCloseableIteration<Statement, SailException>(s.iterator());
            }
        }
    } else if (predicate.equals(PropertyGraphSail.LABEL)) {
        if (!firstClassEdges) {
            return new StatementIteration();
        }
        // TODO: find edges faster using indices
        Object label = literalToObject(object);
        if (null == label || !(label instanceof String)) {
            return new StatementIteration();
        } else {
            Source<Edge> edges = new Source<Edge>(context.graph.getEdges().iterator(), matchingLabels((String) label, object));
            return new StatementIteration(edges);
        }
    } else if (predicate.equals(PropertyGraphSail.HEAD)) {
        if (!firstClassEdges) {
            return new StatementIteration();
        }
        Vertex v = object instanceof URI ? vertexForURI((URI) object) : null;
        if (null == v) {
            return new StatementIteration();
        } else {
            Iterator<Edge> edgeIterator = v.getEdges(Direction.IN).iterator();
            Source<Edge> edges = new Source<Edge>(edgeIterator, heads);
            return new StatementIteration(edges);
        }
    } else if (predicate.equals(PropertyGraphSail.TAIL)) {
        if (!firstClassEdges) {
            return new StatementIteration();
        }
        Vertex v = object instanceof URI ? vertexForURI((URI) object) : null;
        if (null == v) {
            return new StatementIteration();
        } else {
            Iterator<Edge> edgeIterator = v.getEdges(Direction.OUT).iterator();
            Source<Edge> edges = new Source<Edge>(edgeIterator, tails);
            return new StatementIteration(edges);
        }
    } else if (isPropertyPredicate(predicate)) {
        Object value = literalToObject(object);
        if (null == value) {
            return new StatementIteration();
        } else {
            // TODO: lookup matching vertices and edges faster using indices
            String key = keyFromPredicate(predicate);
            Source<Vertex> vertices = new Source<Vertex>(context.graph.getVertices().iterator(), vertexPropertiesWithKeyAndValue(key, predicate, value, (Literal) object));
            if (firstClassEdges) {
                Source<Edge> edges = new Source<Edge>(context.graph.getEdges().iterator(), edgePropertiesWithKeyAndValue(key, predicate, value, (Literal) object));
                return new StatementIteration(vertices, edges);
            } else {
                return new StatementIteration(vertices);
            }
        }
    } else if (isRelationPredicate(predicate)) {
        if (!(object instanceof URI)) {
            return new StatementIteration();
        } else {
            String label = labelForRelationPredicate(predicate);
            Vertex vObj = vertexForURI((URI) object);
            if (null != vObj) {
                Source<Vertex> s = new Source<Vertex>(new SingleItemIterator<Vertex>(vObj), new RelationGenerator(label, true));
                return new StatementIteration(s);
            } else {
                return new StatementIteration();
            }
        }
    } else {
        return new StatementIteration();
    }
}

Example 39 with SailException

use of org.openrdf.sail.SailException in project blueprints by tinkerpop.

the class GraphSailTest method testCodePlay.

@Test
public void testCodePlay() throws Exception {
    Sail sail = new GraphSail(new TinkerGraph());
    sail.initialize();
    try {
        SailConnection sc = sail.getConnection();
        try {
            sc.begin();
            ValueFactory vf = sail.getValueFactory();
            sc.addStatement(vf.createURI("http://tinkerpop.com#1"), vf.createURI("http://tinkerpop.com#knows"), vf.createURI("http://tinkerpop.com#3"), vf.createURI("http://tinkerpop.com"));
            sc.addStatement(vf.createURI("http://tinkerpop.com#1"), vf.createURI("http://tinkerpop.com#name"), vf.createLiteral("marko"), vf.createURI("http://tinkerpop.com"));
            sc.addStatement(vf.createURI("http://tinkerpop.com#3"), vf.createURI("http://tinkerpop.com#name"), vf.createLiteral("josh"), vf.createURI("http://tinkerpop.com"));
            CloseableIteration<? extends Statement, SailException> results = sc.getStatements(null, null, null, false);
            try {
                System.out.println("get statements: ?s ?p ?o ?g");
                while (results.hasNext()) {
                    System.out.println(results.next());
                }
            } finally {
                results.close();
            }
            System.out.println("\nget statements: http://tinkerpop.com#3 ?p ?o ?g");
            results = sc.getStatements(vf.createURI("http://tinkerpop.com#3"), null, null, false);
            try {
                while (results.hasNext()) {
                    System.out.println(results.next());
                }
            } finally {
                results.close();
            }
            SPARQLParser parser = new SPARQLParser();
            CloseableIteration<? extends BindingSet, QueryEvaluationException> sparqlResults;
            String queryString = "SELECT ?x ?y WHERE { ?x <http://tinkerpop.com#knows> ?y }";
            ParsedQuery query = parser.parseQuery(queryString, "http://tinkerPop.com");
            System.out.println("\nSPARQL: " + queryString);
            sparqlResults = sc.evaluate(query.getTupleExpr(), query.getDataset(), new EmptyBindingSet(), false);
            try {
                while (sparqlResults.hasNext()) {
                    System.out.println(sparqlResults.next());
                }
            } finally {
                sparqlResults.close();
            }
            Graph graph = ((GraphSail) sail).getBaseGraph();
            System.out.println();
            for (Vertex v : graph.getVertices()) {
                System.out.println("------");
                System.out.println(v);
                for (String key : v.getPropertyKeys()) {
                    System.out.println(key + "=" + v.getProperty(key));
                }
            }
            for (Edge e : graph.getEdges()) {
                System.out.println("------");
                System.out.println(e);
                for (String key : e.getPropertyKeys()) {
                    System.out.println(key + "=" + e.getProperty(key));
                }
            }
        } finally {
            sc.rollback();
            sc.close();
        }
    } finally {
        sail.shutDown();
    }
}

Example 40 with SailException

use of org.openrdf.sail.SailException in project blueprints by tinkerpop.

the class SailTest method testClearNamespaces.

// namespaces //////////////////////////////////////////////////////////////
@Test
public void testClearNamespaces() throws Exception {
    SailConnection sc = sail.getConnection();
    try {
        CloseableIteration<? extends Namespace, SailException> namespaces;
        int count;
        count = 0;
        namespaces = sc.getNamespaces();
        while (namespaces.hasNext()) {
            namespaces.next();
            count++;
        }
        namespaces.close();
        assertTrue(count > 0);
    // TODO: actually clear namespaces (but this wipes them out for
    // subsequent tests)
    } finally {
        sc.rollback();
        sc.close();
    }
}