Examples with Resource org.eclipse.rdf4j.model.Resource used on opensource projects

Example 61 with Resource

use of org.eclipse.rdf4j.model.Resource in project rdf4j by eclipse.

the class SPARQLConnection method createDeletePatternCommand.

private String createDeletePatternCommand(Resource subject, IRI predicate, Value object, Resource[] contexts) {
    StringBuilder qb = new StringBuilder();
    qb.append("DELETE WHERE \n");
    qb.append("{ \n");
    if (contexts.length > 0) {
        for (Resource context : contexts) {
            if (context != null) {
                String namedGraph = context.stringValue();
                if (context instanceof BNode) {
                    // SPARQL does not allow blank nodes as named graph
                    // identifiers, so we need to skolemize
                    // the blank node id.
                    namedGraph = "urn:nodeid:" + context.stringValue();
                }
                qb.append("    GRAPH <" + namedGraph + "> { \n");
            }
            createBGP(qb, subject, predicate, object);
            if (context != null && context instanceof IRI) {
                qb.append(" } \n");
            }
        }
    } else {
        createBGP(qb, subject, predicate, object);
    }
    qb.append("}");
    return qb.toString();
}

Example 62 with Resource

use of org.eclipse.rdf4j.model.Resource in project rdf4j by eclipse.

the class SPARQLConnection method toStatementIteration.

/**
 * Converts a {@link TupleQueryResult} resulting from the {@link #EVERYTHING_WITH_GRAPH} to a statement by
 * using the respective values from the {@link BindingSet} or (if provided) the ones from the arguments.
 *
 * @param iter
 *        the {@link TupleQueryResult}
 * @param subj
 *        the subject {@link Resource} used as input or <code>null</code> if wildcard was used
 * @param pred
 *        the predicate {@link IRI} used as input or <code>null</code> if wildcard was used
 * @param obj
 *        the object {@link Value} used as input or <code>null</code> if wildcard was used
 * @return the converted iteration
 */
protected Iteration<Statement, QueryEvaluationException> toStatementIteration(TupleQueryResult iter, final Resource subj, final IRI pred, final Value obj) {
    return new ConvertingIteration<BindingSet, Statement, QueryEvaluationException>(iter) {

        @Override
        protected Statement convert(BindingSet b) throws QueryEvaluationException {
            Resource s = subj == null ? (Resource) b.getValue("s") : subj;
            IRI p = pred == null ? (IRI) b.getValue("p") : pred;
            Value o = obj == null ? b.getValue("o") : obj;
            Resource ctx = (Resource) b.getValue("ctx");
            return SimpleValueFactory.getInstance().createStatement(s, p, o, ctx);
        }
    };
}

Example 63 with Resource

use of org.eclipse.rdf4j.model.Resource in project rdf4j by eclipse.

the class SPARQLConnection method getContextIDs.

public RepositoryResult<Resource> getContextIDs() throws RepositoryException {
    TupleQueryResult iter = null;
    RepositoryResult<Resource> result = null;
    boolean allGood = false;
    try {
        TupleQuery query = prepareTupleQuery(SPARQL, NAMEDGRAPHS, "");
        iter = query.evaluate();
        result = new RepositoryResult<Resource>(new ExceptionConvertingIteration<Resource, RepositoryException>(new ConvertingIteration<BindingSet, Resource, QueryEvaluationException>(iter) {

            @Override
            protected Resource convert(BindingSet bindings) throws QueryEvaluationException {
                return (Resource) bindings.getValue("_");
            }
        }) {

            @Override
            protected RepositoryException convert(Exception e) {
                return new RepositoryException(e);
            }
        });
        allGood = true;
        return result;
    } catch (MalformedQueryException e) {
        throw new RepositoryException(e);
    } catch (QueryEvaluationException e) {
        throw new RepositoryException(e);
    } finally {
        if (!allGood) {
            try {
                if (result != null) {
                    result.close();
                }
            } finally {
                if (iter != null) {
                    iter.close();
                }
            }
        }
    }
}

Example 64 with Resource

use of org.eclipse.rdf4j.model.Resource in project rdf4j by eclipse.

the class NotifyingTest method testRemove.

@Test
public void testRemove() throws Exception {
    ValueFactory vf = SimpleValueFactory.getInstance();
    final IRI uri = vf.createIRI("http://example.com/");
    final RepositoryConnection stub = new RepositoryConnectionStub() {

        protected void removeWithoutCommit(Resource subject, IRI predicate, Value object, Resource... contexts) throws RepositoryException {
        }
    };
    Repository repo = stub.getRepository();
    NotifyingRepositoryConnection con = new NotifyingRepositoryConnectionWrapper(repo, stub);
    con.addRepositoryConnectionListener(new RepositoryConnectionListenerAdapter() {

        public void remove(RepositoryConnection conn, Resource subject, IRI predicate, Value object, Resource... contexts) {
            assertEquals(stub, conn);
            assertEquals(uri, subject);
            assertEquals(uri, predicate);
            assertEquals(uri, object);
            assertEquals(0, contexts.length);
        }
    });
    con.remove(con.getValueFactory().createStatement(uri, uri, uri));
}

Example 65 with Resource

use of org.eclipse.rdf4j.model.Resource in project rdf4j by eclipse.

the class InterceptorTest method testRemove.

@Test
public void testRemove() throws Exception {
    ValueFactory vf = SimpleValueFactory.getInstance();
    final IRI uri = vf.createIRI("http://example.com/");
    final RepositoryConnection stub = new RepositoryConnectionStub() {

        protected void removeWithoutCommit(Resource subject, IRI predicate, Value object, Resource... contexts) throws RepositoryException {
            fail();
        }
    };
    Repository repo = stub.getRepository();
    InterceptingRepositoryConnection con = new InterceptingRepositoryConnectionWrapper(repo, stub);
    con.addRepositoryConnectionInterceptor(new RepositoryConnectionInterceptorAdapter() {

        public boolean remove(RepositoryConnection conn, Resource subject, IRI predicate, Value object, Resource... contexts) {
            assertEquals(stub, conn);
            assertEquals(uri, subject);
            assertEquals(uri, predicate);
            assertEquals(uri, object);
            assertEquals(0, contexts.length);
            return true;
        }
    });
    con.remove(con.getValueFactory().createStatement(uri, uri, uri));
}