| /* |
| * 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 jena.examples.rdf ; |
| |
| import org.apache.jena.rdf.model.*; |
| import org.apache.jena.util.FileManager; |
| import org.apache.jena.vocabulary.*; |
| |
| import java.io.*; |
| |
| |
| /** Tutorial 8 - demonstrate Selector methods |
| */ |
| public class Tutorial08 extends Object { |
| |
| static final String inputFileName = "vc-db-1.rdf"; |
| |
| public static void main (String args[]) { |
| // create an empty model |
| Model model = ModelFactory.createDefaultModel(); |
| |
| // use the FileManager to find the input file |
| InputStream in = FileManager.get().open(inputFileName); |
| if (in == null) { |
| throw new IllegalArgumentException( "File: " + inputFileName + " not found"); |
| } |
| |
| // read the RDF/XML file |
| model.read( in, "" ); |
| |
| // select all the resources with a VCARD.FN property |
| // whose value ends with "Smith" |
| StmtIterator iter = model.listStatements( |
| new |
| SimpleSelector(null, VCARD.FN, (RDFNode) null) { |
| @Override |
| public boolean selects(Statement s) { |
| return s.getString().endsWith("Smith"); |
| } |
| }); |
| if (iter.hasNext()) { |
| System.out.println("The database contains vcards for:"); |
| while (iter.hasNext()) { |
| System.out.println(" " + iter.nextStatement() |
| .getString()); |
| } |
| } else { |
| System.out.println("No Smith's were found in the database"); |
| } |
| } |
| } |