br0407Jena官方示例

Official_jena_examples/ExampleAPI_01.java

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+/**
+ * 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 Official_jena_examples;
+
+import com.hp.hpl.jena.rdf.model.Model;
+import com.hp.hpl.jena.rdf.model.RDFNode;
+import com.hp.hpl.jena.rdf.model.Resource;
+import com.hp.hpl.jena.rdf.model.Statement;
+import com.hp.hpl.jena.rdf.model.StmtIterator;
+import com.hp.hpl.jena.util.FileManager;
+
+public class ExampleAPI_01 {
+
+    public static void main(String[] args) {
+        FileManager.get().addLocatorClassLoader(ExampleAPI_01.class.getClassLoader());
+        Model model = FileManager.get().loadModel("data/data.ttl", null, "TURTLE");
+
+        StmtIterator iter = model.listStatements();
+        try {
+            while ( iter.hasNext() ) {
+                Statement stmt = iter.next();
+
+                Resource s = stmt.getSubject();
+                Resource p = stmt.getPredicate();
+                RDFNode o = stmt.getObject();
+
+                if ( s.isURIResource() ) {
+                    System.out.print("URI");
+                } else if ( s.isAnon() ) {
+                    System.out.print("blank");
+                }
+
+                if ( p.isURIResource() ) 
+                    System.out.print(" URI ");
+
+                if ( o.isURIResource() ) {
+                    System.out.print("URI");
+                } else if ( o.isAnon() ) {
+                    System.out.print("blank");
+                } else if ( o.isLiteral() ) {
+                    System.out.print("literal");
+                }
+
+                System.out.println();                
+            }
+        } finally {
+            if ( iter != null ) iter.close();
+        }
+    }
+
+}

Official_jena_examples/ExampleAPI_02.java

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+/**
+ * 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 Official_jena_examples;
+
+import com.hp.hpl.jena.rdf.model.Model;
+import com.hp.hpl.jena.rdf.model.ModelFactory;
+import com.hp.hpl.jena.sparql.vocabulary.FOAF;
+
+public class ExampleAPI_02 {
+
+    public static void main(String[] args) {
+        Model model = ModelFactory.createDefaultModel();
+
+        model.createResource("http://example.org/alice", FOAF.Person)
+            .addProperty(FOAF.name, "Alice")
+            .addProperty(FOAF.mbox, model.createResource("mailto:alice@example.org"))
+            .addProperty(FOAF.knows, model.createResource("http://example.org/bob"));
+
+        model.write(System.out, "TURTLE");
+    }
+
+}

Official_jena_examples/ExampleAPI_03.java

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+/**
+ * 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 Official_jena_examples;
+
+import com.hp.hpl.jena.rdf.model.Model;
+import com.hp.hpl.jena.rdf.model.ModelFactory;
+import com.hp.hpl.jena.rdf.model.Resource;
+import com.hp.hpl.jena.rdf.model.ResourceFactory;
+import com.hp.hpl.jena.sparql.vocabulary.FOAF;
+import com.hp.hpl.jena.vocabulary.RDF;
+
+public class ExampleAPI_03 {
+
+    public static void main(String[] args) {
+        Model model = ModelFactory.createDefaultModel();
+
+        Resource alice = ResourceFactory.createResource("http://example.org/alice");
+
+        Resource bob = ResourceFactory.createResource("http://example.org/bob");
+        model.add (alice, RDF.type, FOAF.Person);
+        model.add (alice, FOAF.name, "Alice");
+        model.add (alice, FOAF.mbox, ResourceFactory.createResource("mailto:alice@example.org"));
+        model.add (alice, FOAF.knows, bob);
+
+        model.write(System.out, "TURTLE");
+    }
+
+}

Official_jena_examples/ExampleAPI_04.java

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+/**
+ * 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 Official_jena_examples;
+
+import java.io.BufferedReader;
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+
+import com.hp.hpl.jena.rdf.model.Model;
+import com.hp.hpl.jena.rdf.model.ModelFactory;
+import com.hp.hpl.jena.util.FileManager;
+
+public class ExampleAPI_04 {
+
+    public static void main(String[] args) throws IOException {
+        FileManager.get().addLocatorClassLoader(ExampleAPI_04.class.getClassLoader());
+        InputStream in = FileManager.get().open("data/data2.ttl");
+        BufferedReader reader = new BufferedReader(new InputStreamReader(in));
+        String line = null;
+        Model all = ModelFactory.createDefaultModel();
+        while ( ( line = reader.readLine() ) != null ) {
+        	ByteArrayInputStream bais = new ByteArrayInputStream(line.getBytes());
+        	Model model = ModelFactory.createDefaultModel();
+        	model.read(bais, null, "TURTLE");
+        	model.write(System.out, "TURTLE");
+        	all.add(model);
+        	all.setNsPrefixes(model.getNsPrefixMap());
+        	System.out.println("----------------");
+        }
+        all.write(System.out, "TURTLE");
+    }
+
+}

Official_jena_examples/ExampleDataTypes_01.java

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+/**
+ * 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 Official_jena_examples;
+
+import com.hp.hpl.jena.datatypes.RDFDatatype;
+import com.hp.hpl.jena.datatypes.xsd.XSDDatatype;
+import com.hp.hpl.jena.rdf.model.Literal;
+import com.hp.hpl.jena.rdf.model.Model;
+import com.hp.hpl.jena.rdf.model.ModelFactory;
+import com.hp.hpl.jena.rdf.model.Property;
+import com.hp.hpl.jena.rdf.model.Resource;
+import com.hp.hpl.jena.rdf.model.ResourceFactory;
+
+public class ExampleDataTypes_01 {
+
+    private static final String BASE = "http://example.org/"; 
+
+    public static void main(String[] args) {
+        Model model = ModelFactory.createDefaultModel();
+
+        Resource subject = r("s");
+
+        model.addLiteral (subject, p("p1"), 10);
+        model.addLiteral (subject, p("p2"), 0.5);
+        model.addLiteral (subject, p("p3"), (float)0.5);
+        model.addLiteral (subject, p("p4"), l(20));
+        model.addLiteral (subject, p("p5"), l(0.99));
+        model.addLiteral (subject, p("p6"), true);
+        model.add (subject, p("p7"), l("2012-03-11", XSDDatatype.XSDdate));
+        model.add (subject, p("p8"), l("P2Y", XSDDatatype.XSDduration));
+
+        model.setNsPrefix("example", BASE);
+        model.setNsPrefix("xsd", "http://www.w3.org/2001/XMLSchema#");
+
+        model.write(System.out, "TURTLE");
+    }
+
+    private static Resource r ( String localname ) {
+        return ResourceFactory.createResource ( BASE + localname );
+    }
+
+    private static Property p ( String localname ) {
+        return ResourceFactory.createProperty ( BASE, localname );
+    }
+
+    private static Literal l ( Object value ) {
+        return ResourceFactory.createTypedLiteral ( value );
+    }
+
+    private static Literal l ( String lexicalform, RDFDatatype datatype ) {
+        return ResourceFactory.createTypedLiteral ( lexicalform, datatype );
+    }
+
+}