Java Code Examples for org.openrdf.query.TupleQuery#setIncludeInferred()
The following examples show how to use
org.openrdf.query.TupleQuery#setIncludeInferred() .
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Example 1
| Source File: SampleBlazegraphSesameEmbedded.java From blazegraph-samples with GNU General Public License v2.0 | 6 votes |
|
public static TupleQueryResult executeSelectQuery(final Repository repo, final String query,
final QueryLanguage ql) throws OpenRDFException {
RepositoryConnection cxn;
if (repo instanceof BigdataSailRepository) {
cxn = ((BigdataSailRepository) repo).getReadOnlyConnection();
} else {
cxn = repo.getConnection();
}
try {
final TupleQuery tupleQuery = cxn.prepareTupleQuery(ql, query);
tupleQuery.setIncludeInferred(true /* includeInferred */);
return tupleQuery.evaluate();
} finally {
// close the repository connection
cxn.close();
}
}
Example 2
| Source File: Utils.java From blazegraph-samples with GNU General Public License v2.0 | 6 votes |
|
public static TupleQueryResult executeSelectQuery(Repository repo, String query,
QueryLanguage ql) throws OpenRDFException {
RepositoryConnection cxn;
if (repo instanceof BigdataSailRepository) {
cxn = ((BigdataSailRepository) repo).getReadOnlyConnection();
} else {
cxn = repo.getConnection();
}
try {
final TupleQuery tupleQuery = cxn.prepareTupleQuery(ql, query);
tupleQuery.setIncludeInferred(true /* includeInferred */);
return tupleQuery.evaluate();
} finally {
// close the repository connection
cxn.close();
}
}
Example 3
| Source File: Concurrency.java From database with GNU General Public License v2.0 | 6 votes |
|
/**
* Issue the query.
*
* @throws Exception
*/
private void doQuery() throws Exception {
RepositoryConnection cxn = repo.getReadOnlyConnection();
try {
final TupleQuery tupleQuery =
cxn.prepareTupleQuery(QueryLanguage.SPARQL, query);
tupleQuery.setIncludeInferred(true /* includeInferred */);
TupleQueryResult result = tupleQuery.evaluate();
// do something with the results
int resultCount = 0;
while (result.hasNext()) {
BindingSet bindingSet = result.next();
// log.info(bindingSet);
resultCount++;
}
log.info(resultCount + " results");
} finally {
// close the repository connection
cxn.close();
}
}
Example 4
| Source File: BigdataSailRemoteRepositoryConnectionTest.java From database with GNU General Public License v2.0 | 6 votes |
|
@Test
public void testTupleQueryIncludeInferred() throws Exception {
final TupleQuery tq = con.prepareTupleQuery(QueryLanguage.SPARQL, "select * where {?s ?p ?o}");
tq.setIncludeInferred(false);
tq.evaluate();
assertEquals("false", remote.data.opts.getRequestParam(RemoteRepositoryDecls.INCLUDE_INFERRED));
assertEquals("false", remote.data.request.getParams().get(RemoteRepositoryDecls.INCLUDE_INFERRED).getValue());
tq.setIncludeInferred(true);
final TupleQueryResult tqr = tq.evaluate();
try {
assertEquals("true", remote.data.opts.getRequestParam(RemoteRepositoryDecls.INCLUDE_INFERRED));
assertEquals("true", remote.data.request.getParams().get(RemoteRepositoryDecls.INCLUDE_INFERRED).getValue());
} finally {
tqr.close();
}
}
Example 5
| Source File: LoadPdb.java From database with GNU General Public License v2.0 | 6 votes |
|
public static void executeSelectQuery(Repository repo, String query) throws Exception {
RepositoryConnection cxn = repo.getConnection();
int counter = 0;
try {
final TupleQuery tupleQuery = cxn.prepareTupleQuery(QueryLanguage.SPARQL, query);
tupleQuery.setIncludeInferred(true /* includeInferred */);
TupleQueryResult result = tupleQuery.evaluate();
// do something with the results
while (result.hasNext()) {
BindingSet bindingSet = result.next();
LOG.info(bindingSet);
counter++;
}
} finally {
// close the repository connection
cxn.close();
// LOG.info
System.err.println
("Number of results: " + counter);
}
}
Example 6
| Source File: SampleCode.java From database with GNU General Public License v2.0 | 5 votes |
|
/**
* Execute a "select" query.
*
* @param repo
* @param query
* @param ql
* @throws Exception
*/
public void executeSelectQuery(Repository repo, String query,
QueryLanguage ql) throws Exception {
/*
* With MVCC, you read from a historical state to avoid blocking and
* being blocked by writers. BigdataSailRepository.getQueryConnection
* gives you a view of the repository at the last commit point.
*/
RepositoryConnection cxn;
if (repo instanceof BigdataSailRepository) {
cxn = ((BigdataSailRepository) repo).getReadOnlyConnection();
} else {
cxn = repo.getConnection();
}
try {
final TupleQuery tupleQuery = cxn.prepareTupleQuery(ql, query);
tupleQuery.setIncludeInferred(true /* includeInferred */);
TupleQueryResult result = tupleQuery.evaluate();
// do something with the results
while (result.hasNext()) {
BindingSet bindingSet = result.next();
log.info(bindingSet);
}
} finally {
// close the repository connection
cxn.close();
}
}
Example 7
| Source File: ScaleOut.java From database with GNU General Public License v2.0 | 4 votes |
|
/**
* Issue the query.
*
* @throws Exception
*/
private void doQuery() throws Exception {
// this is how you get a read-only transaction. MUST be
// committed or aborted later, see below.
long transactionId =
fed.getTransactionService().newTx(ITx.READ_COMMITTED);
try {
// open the read-only triple store
final AbstractTripleStore tripleStore =
openTripleStore(fed, transactionId);
// wrap it in a Sesame SAIL
final BigdataSail sail = new BigdataSail(tripleStore);
final Repository repo = new BigdataSailRepository(sail);
repo.initialize();
RepositoryConnection cxn = repo.getConnection();
try {
final TupleQuery tupleQuery =
cxn.prepareTupleQuery(QueryLanguage.SPARQL, query);
tupleQuery.setIncludeInferred(true /* includeInferred */);
TupleQueryResult result = tupleQuery.evaluate();
// do something with the results
int resultCount = 0;
while (result.hasNext()) {
BindingSet bindingSet = result.next();
// log.info(bindingSet);
resultCount++;
}
log.info(resultCount + " results");
} finally {
// close the repository connection
cxn.close();
}
repo.shutDown();
} finally {
// MUST close the transaction, abort is sufficient
fed.getTransactionService().abort(transactionId);
}
}
Example 8
| Source File: TestOptionals.java From database with GNU General Public License v2.0 | 4 votes |
|
/**
* Tests mapping of left joins in SPARQL onto optionals in bigdata rules.
*
* @throws Exception
*/
public void testLeftJoins() throws Exception {
final BigdataSail sail = getSail();
sail.initialize();
final BigdataSailRepository repo = new BigdataSailRepository(sail);
final BigdataSailRepositoryConnection cxn =
(BigdataSailRepositoryConnection) repo.getConnection();
cxn.setAutoCommit(false);
try {
final URI book1 = new URIImpl("http://www.bigdata.com/rdf#book1");
final URI book2 = new URIImpl("http://www.bigdata.com/rdf#book2");
final URI book3 = new URIImpl("http://www.bigdata.com/rdf#book3");
final URI price = new URIImpl("http://www.bigdata.com/rdf#price");
final URI XSD_INTEGER = new URIImpl("http://www.w3.org/2001/XMLSchema#integer");
/**/
cxn.add(
book1,
DC_TITLE,
new LiteralImpl("TITLE 1")
);
cxn.add(
book1,
price,
new LiteralImpl("10", XSD_INTEGER)
);
cxn.add(
book2,
DC_TITLE,
new LiteralImpl("TITLE 2")
);
cxn.add(
book2,
price,
new LiteralImpl("20", XSD_INTEGER)
);
cxn.add(
book3,
DC_TITLE,
new LiteralImpl("TITLE 3")
);
/**/
/*
* Note: The either flush() or commit() is required to flush the
* statement buffers to the database before executing any operations
* that go around the sail.
*/
// cxn.flush();//commit();
cxn.commit();
/**/
if (log.isInfoEnabled()) {
log.info(cxn.getTripleStore().dumpStore());
}
String query =
"SELECT ?title ?price " +
"WHERE { " +
"?book <"+DC_TITLE+"> ?title . " +
"OPTIONAL { ?book <"+price+"> ?price . } . " +
"}";
final TupleQuery tupleQuery =
cxn.prepareTupleQuery(QueryLanguage.SPARQL, query);
tupleQuery.setIncludeInferred(true /* includeInferred */);
TupleQueryResult result = tupleQuery.evaluate();
Collection<BindingSet> answer = new LinkedList<BindingSet>();
answer.add(createBindingSet(
new BindingImpl("title", new LiteralImpl("TITLE 1")), new BindingImpl("price", new LiteralImpl("10", XSD_INTEGER))));
answer.add(createBindingSet(
new BindingImpl("title", new LiteralImpl("TITLE 2")), new BindingImpl("price", new LiteralImpl("20", XSD_INTEGER))));
answer.add(createBindingSet(
new BindingImpl("title", new LiteralImpl("TITLE 3"))));
compare(result, answer);
} finally {
cxn.close();
sail.__tearDownUnitTest();
}
}
Example 9
| Source File: TestUnions.java From database with GNU General Public License v2.0 | 4 votes |
|
/**
* Tests mapping of UNIONS in SPARQL onto unions in bigdata rules.
*
* @throws Exception
*/
public void testSesameFilters() throws Exception {
final BigdataSail sail = getSail();
sail.initialize();
final BigdataSailRepository repo = new BigdataSailRepository(sail);
final BigdataSailRepositoryConnection cxn =
(BigdataSailRepositoryConnection) repo.getConnection();
cxn.setAutoCommit(false);
try {
final URI jack = new URIImpl("_:Jack");
final URI jill = new URIImpl("_:Jill");
final URI person = new URIImpl("_:Person");
final URI age = new URIImpl("_:age");
final URI integer = new URIImpl("http://www.w3.org/2001/XMLSchema#integer");
/**/
cxn.add(
jack,
RDF.TYPE,
person
);
cxn.add(
jill,
RDF.TYPE,
person
);
cxn.add(
jack,
age,
new LiteralImpl("40", integer)
);
cxn.add(
jill,
age,
new LiteralImpl("30", integer)
);
/**/
/*
* Note: The either flush() or commit() is required to flush the
* statement buffers to the database before executing any operations
* that go around the sail.
*/
cxn.flush();//commit();
/**/
log.info("hello");
if (log.isInfoEnabled()) {
log.info(cxn.getTripleStore().dumpStore());
}
{
String query =
"SELECT * " +
"WHERE { " +
" { " +
" ?x <"+RDF.TYPE+"> <"+person+"> . " +
" ?x <"+age+"> ?age1 . " +
" FILTER( ?age1 > 35 ) . " +
" } " +
" UNION " +
" { " +
" ?x <"+RDF.TYPE+"> <"+person+"> . " +
" ?x <"+age+"> ?age2 . " +
" FILTER( ?age2 > 25 ) . " +
" } " +
"}";
final StringWriter sw = new StringWriter();
final TupleQuery tupleQuery =
cxn.prepareTupleQuery(QueryLanguage.SPARQL, query);
tupleQuery.setIncludeInferred(true /* includeInferred */);
tupleQuery.evaluate(new SPARQLResultsXMLWriter(new XMLWriter(sw)));
if(log.isInfoEnabled())log.info(sw.toString());
}
} finally {
cxn.close();
sail.__tearDownUnitTest();
}
}
Example 10
| Source File: TestQuadsAPI.java From database with GNU General Public License v2.0 | 4 votes |
|
/**
* Matt, do you recognize this unit test: TestQuadsAPI#testSCequality()? I
* think that this may have been something from you dealing with the binding
* on the S and C positions. Bryan
* <p>
* mooseroy: If i remember correctly, early on there was a problem when you
* had something like graph ?s{?s ?p ?o} where it wasn't ensuring the ?s in
* the context and subject position where equal.
*/
public void testSCequality() throws Exception {
final BigdataSail sail = getSail();
sail.initialize();
final BigdataSailRepository repo = new BigdataSailRepository(sail);
final BigdataSailRepositoryConnection cxn =
(BigdataSailRepositoryConnection) repo.getConnection();
cxn.setAutoCommit(false);
try {
assertEquals(0, cxn.getTripleStore().getNamedGraphCount());
assertFalse(cxn.getContextIDs().hasNext());
// final BNode a = new BNodeImpl("_:a");
// final BNode b = new BNodeImpl("_:b");
final URI graphA = new URIImpl("http://www.bigdata.com/rdf#graphA");
final URI graphB = new URIImpl("http://www.bigdata.com/rdf#graphB");
final URI s = new URIImpl("http://www.bigdata.com/rdf#s");
final URI p1 = new URIImpl("http://www.bigdata.com/rdf#p1");
final URI o1 = new URIImpl("http://www.bigdata.com/rdf#o1");
final URI p2 = new URIImpl("http://www.bigdata.com/rdf#p2");
final URI o2 = new URIImpl("http://www.bigdata.com/rdf#o2");
cxn.add(graphA, p1, o1, graphA);
cxn.add( s, p1, o1, graphA);
cxn.add(graphA, p2, o2, graphA);
cxn.add( s, p2, o2, graphB);
/*
* Note: The either flush() or commit() is required to flush the
* statement buffers to the database before executing any operations
* that go around the sail.
*/
// cxn.flush();//commit();
cxn.commit();
assertEquals(2, cxn.getTripleStore().getNamedGraphCount());
assertSameIterationAnyOrder(new Resource[] { graphA, graphB }, cxn
.getContextIDs());
/**/
if (log.isInfoEnabled()) {
log.info("\n" + cxn.getTripleStore().dumpStore());
}
final String query =
"SELECT * \n" +
"WHERE { \n"+
" GRAPH ?g { \n" +
" ?g <"+p1+"> <"+o1+"> . \n" +
" ?g <"+p2+"> <"+o2+"> . \n" +
" }\n" +
"}";
final TupleQuery tupleQuery =
cxn.prepareTupleQuery(QueryLanguage.SPARQL, query);
tupleQuery.setIncludeInferred(true /* includeInferred */);
final TupleQueryResult result = tupleQuery.evaluate();
final Collection<BindingSet> answer = new LinkedList<BindingSet>();
answer.add(createBindingSet(
new BindingImpl("g", graphA)));
compare(result, answer);
} finally {
cxn.close();
sail.__tearDownUnitTest();
}
}
