commit ExampleConstructQuads.java Project: http://git-wip-us.apache.org/repos/asf/jena/repo Commit: http://git-wip-us.apache.org/repos/asf/jena/commit/5e56c1f2 Tree: http://git-wip-us.apache.org/repos/asf/jena/tree/5e56c1f2 Diff: http://git-wip-us.apache.org/repos/asf/jena/diff/5e56c1f2
Branch: refs/heads/JENA-491-construct-quads Commit: 5e56c1f2b0e2b0b2f6a1e7fda9fe17b6254176da Parents: d586256 Author: confidencesun <[email protected]> Authored: Sun Jun 21 21:28:15 2015 +0800 Committer: confidencesun <[email protected]> Committed: Sun Jun 21 21:28:15 2015 +0800 ---------------------------------------------------------------------- .../constructquads/ExampleConstructQuads.java | 141 +++++++++++++++++++ 1 file changed, 141 insertions(+) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/jena/blob/5e56c1f2/jena-arq/src-examples/arq/examples/constructquads/ExampleConstructQuads.java ---------------------------------------------------------------------- diff --git a/jena-arq/src-examples/arq/examples/constructquads/ExampleConstructQuads.java b/jena-arq/src-examples/arq/examples/constructquads/ExampleConstructQuads.java new file mode 100644 index 0000000..580dc6c --- /dev/null +++ b/jena-arq/src-examples/arq/examples/constructquads/ExampleConstructQuads.java @@ -0,0 +1,141 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package arq.examples.constructquads; + +import java.util.Iterator; + +import org.apache.jena.graph.Triple; +import org.apache.jena.query.Dataset; +import org.apache.jena.query.DatasetFactory; +import org.apache.jena.query.Query; +import org.apache.jena.query.QueryExecution; +import org.apache.jena.query.QueryExecutionFactory; +import org.apache.jena.query.QueryFactory; +import org.apache.jena.query.Syntax; +import org.apache.jena.rdf.model.Model; +import org.apache.jena.rdf.model.ModelFactory; +import org.apache.jena.rdf.model.Property; +import org.apache.jena.rdf.model.Resource; +import org.apache.jena.sparql.core.Quad; +import org.apache.jena.util.PrintUtil; + +public class ExampleConstructQuads { + public static void main(String[] args) { + + // create testing data : + // 1) default graph data + Model model = ModelFactory.createDefaultModel(); + Resource s = model.createResource("http://eg.com/s";); + Property p = model.createProperty("http://eg.com/p";); + Resource o = model.createResource("http://eg.com/o";); + model.add(s, p, o); + Dataset dataset = DatasetFactory.create(model); + // 2) named graph data + Model model1 = ModelFactory.createDefaultModel(); + Resource s1 = model.createResource("http://eg.com/s1";); + Property p1 = model.createProperty("http://eg.com/p1";); + Resource o1 = model.createResource("http://eg.com/o1";); + model1.add(s1, p1, o1); + dataset.addNamedModel("<http://eg.com/g1>", model1); + + + // construct named graph + System.out.println("construct named graph:"); + String queryString = "CONSTRUCT { GRAPH ?g {<http://eg.com/s1> <http://eg.com/p1> ?o} } WHERE{ GRAPH ?g {<http://eg.com/s1> <http://eg.com/p1> ?o} }"; + Query query = QueryFactory.create(queryString, Syntax.syntaxARQ); + QueryExecution qexec = QueryExecutionFactory.create(query, dataset); + Iterator<Quad> quads = qexec.execConstructQuads(); + PrintUtil.printOut(quads); + qexec.close(); + + // construct default graph 1 + System.out.println("construct default graph 1:"); + queryString = "CONSTRUCT { {<http://eg.com/s1> <http://eg.com/p1> ?o} } WHERE{ GRAPH ?g {<http://eg.com/s1> <http://eg.com/p1> ?o} }"; + query = QueryFactory.create(queryString, Syntax.syntaxARQ); + qexec = QueryExecutionFactory.create(query, dataset); + quads = qexec.execConstructQuads(); + PrintUtil.printOut(quads); + qexec.close(); + + // construct default graph 2 + System.out.println("construct default graph 2:"); + queryString = "CONSTRUCT {<http://eg.com/s1> <http://eg.com/p1> ?o} WHERE{ GRAPH ?g {<http://eg.com/s1> <http://eg.com/p1> ?o} }"; + query = QueryFactory.create(queryString, Syntax.syntaxARQ); + qexec = QueryExecutionFactory.create(query, dataset); + quads = qexec.execConstructQuads(); + PrintUtil.printOut(quads); + qexec.close(); + + // construct triples + System.out.println("construct default graph 2:"); + queryString = "CONSTRUCT {<http://eg.com/s1> <http://eg.com/p1> ?o} WHERE{ GRAPH ?g {<http://eg.com/s1> <http://eg.com/p1> ?o} }"; + query = QueryFactory.create(queryString, Syntax.syntaxARQ); + qexec = QueryExecutionFactory.create(query, dataset); + Iterator<Triple> triples = qexec.execConstructTriples(); + PrintUtil.printOut(triples); + qexec.close(); + + //construct dataset + System.out.println("construct dataset:"); + queryString = "CONSTRUCT { GRAPH ?g {<http://eg.com/s1> <http://eg.com/p1> ?o} } WHERE{ GRAPH ?g {<http://eg.com/s1> <http://eg.com/p1> ?o} }"; + query = QueryFactory.create(queryString, Syntax.syntaxARQ); + qexec = QueryExecutionFactory.create(query, dataset); + Dataset d = qexec.execConstructDataset(); + PrintUtil.printOut(d.getNamedModel("<http://eg.com/g1>").listStatements()); + qexec.close(); + + //short form 1 + System.out.println("short form 1:"); + queryString = "CONSTRUCT WHERE{ GRAPH ?g {<http://eg.com/s1> <http://eg.com/p1> ?o} }"; + query = QueryFactory.create(queryString, Syntax.syntaxARQ); + qexec = QueryExecutionFactory.create(query, dataset); + quads = qexec.execConstructQuads(); + PrintUtil.printOut(quads); + qexec.close(); + + //short form 2 + System.out.println("short form 2:"); + queryString = "CONSTRUCT WHERE{ <http://eg.com/s> <http://eg.com/p> ?o }"; + query = QueryFactory.create(queryString, Syntax.syntaxARQ); + qexec = QueryExecutionFactory.create(query, dataset); + quads = qexec.execConstructQuads(); + PrintUtil.printOut(quads); + qexec.close(); + + //short form 3 + System.out.println("short form 3:"); + queryString = "CONSTRUCT WHERE{ <http://eg.com/s> <http://eg.com/p> ?o }"; + query = QueryFactory.create(queryString, Syntax.syntaxARQ); + qexec = QueryExecutionFactory.create(query, dataset); + triples = qexec.execConstructTriples(); + PrintUtil.printOut(triples); + qexec.close(); + + //short form 4 + System.out.println("short form 4:"); + queryString = "CONSTRUCT WHERE{ {<http://eg.com/s> <http://eg.com/p> ?o} }"; + query = QueryFactory.create(queryString, Syntax.syntaxARQ); + qexec = QueryExecutionFactory.create(query, dataset); + quads = qexec.execConstructQuads(); + PrintUtil.printOut(quads); + qexec.close(); + + + } +}
