Source Code Cross Referenced for ModelUtils.java in  » Search-Engine » semweb4j » org » ontoware » rdf2go » util » Java Source Code / Java DocumentationJava Source Code and Java Documentation

Java Source Code / Java Documentation
1. 6.0 JDK Core
2. 6.0 JDK Modules
3. 6.0 JDK Modules com.sun
4. 6.0 JDK Modules com.sun.java
5. 6.0 JDK Modules sun
6. 6.0 JDK Platform
7. Ajax
8. Apache Harmony Java SE
9. Aspect oriented
10. Authentication Authorization
11. Blogger System
12. Build
13. Byte Code
14. Cache
15. Chart
16. Chat
17. Code Analyzer
18. Collaboration
19. Content Management System
20. Database Client
21. Database DBMS
22. Database JDBC Connection Pool
23. Database ORM
24. Development
25. EJB Server geronimo
26. EJB Server GlassFish
27. EJB Server JBoss 4.2.1
28. EJB Server resin 3.1.5
29. ERP CRM Financial
30. ESB
31. Forum
32. GIS
33. Graphic Library
34. Groupware
35. HTML Parser
36. IDE
37. IDE Eclipse
38. IDE Netbeans
39. Installer
40. Internationalization Localization
41. Inversion of Control
42. Issue Tracking
43. J2EE
44. JBoss
45. JMS
46. JMX
47. Library
48. Mail Clients
49. Net
50. Parser
51. PDF
52. Portal
53. Profiler
54. Project Management
55. Report
56. RSS RDF
57. Rule Engine
58. Science
59. Scripting
60. Search Engine
61. Security
62. Sevlet Container
63. Source Control
64. Swing Library
65. Template Engine
66. Test Coverage
67. Testing
68. UML
69. Web Crawler
70. Web Framework
71. Web Mail
72. Web Server
73. Web Services
74. Web Services apache cxf 2.0.1
75. Web Services AXIS2
76. Wiki Engine
77. Workflow Engines
78. XML
79. XML UI
Java
Java Tutorial
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
Photoshop Tutorials
Maya Tutorials
Flash Tutorials
3ds-Max Tutorials
Illustrator Tutorials
GIMP Tutorials
C# / C Sharp
C# / CSharp Tutorial
C# / CSharp Open Source
ASP.Net
ASP.NET Tutorial
JavaScript DHTML
JavaScript Tutorial
JavaScript Reference
HTML / CSS
HTML CSS Reference
C / ANSI-C
C Tutorial
C++
C++ Tutorial
Ruby
PHP
Python
Python Tutorial
Python Open Source
SQL Server / T-SQL
SQL Server / T-SQL Tutorial
Oracle PL / SQL
Oracle PL/SQL Tutorial
PostgreSQL
SQL / MySQL
MySQL Tutorial
VB.Net
VB.Net Tutorial
Flash / Flex / ActionScript
VBA / Excel / Access / Word
XML
XML Tutorial
Microsoft Office PowerPoint 2007 Tutorial
Microsoft Office Excel 2007 Tutorial
Microsoft Office Word 2007 Tutorial
Java Source Code / Java Documentation » Search Engine » semweb4j » org.ontoware.rdf2go.util 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * LICENSE INFORMATION
003:         * Copyright 2005-2007 by FZI (http://www.fzi.de).
004:         * Licensed under a BSD license (http://www.opensource.org/licenses/bsd-license.php)
005:         * <OWNER> = Max Völkel
006:         * <ORGANIZATION> = FZI Forschungszentrum Informatik Karlsruhe, Karlsruhe, Germany
007:         * <YEAR> = 2007
008:         * 
009:         * Project information at http://semweb4j.org/rdf2go
010:         */
011:        package org.ontoware.rdf2go.util;
012:
013:        import java.io.File;
014:        import java.io.FileInputStream;
015:        import java.io.FileNotFoundException;
016:        import java.io.FileOutputStream;
017:        import java.io.FileReader;
018:        import java.io.FileWriter;
019:        import java.io.IOException;
020:        import java.util.HashMap;
021:        import java.util.Iterator;
022:        import java.util.Map;
023:
024:        import org.ontoware.aifbcommons.collection.ClosableIterator;
025:        import org.ontoware.rdf2go.RDF2Go;
026:        import org.ontoware.rdf2go.exception.ModelRuntimeException;
027:        import org.ontoware.rdf2go.model.Model;
028:        import org.ontoware.rdf2go.model.ModelSet;
029:        import org.ontoware.rdf2go.model.Statement;
030:        import org.ontoware.rdf2go.model.Syntax;
031:        import org.ontoware.rdf2go.model.node.BlankNode;
032:        import org.ontoware.rdf2go.model.node.Node;
033:        import org.ontoware.rdf2go.model.node.Resource;
034:
035:        /**
036:         * Find a lot of convenience functions that are slow but nice and didn't make it
037:         * to the Model API.
038:         * 
039:         * @author voelkel
040:         * 
041:         */
042:        public class ModelUtils {
043:
044:            /**
045:             * Count statements in iterable 'it'
046:             * 
047:             * @param it
048:             *            the iterable
049:             * @return the size
050:             */
051:            public static int size(Iterable<?> it) {
052:                int count = 0;
053:                Iterator<?> i = it.iterator();
054:                while (i.hasNext()) {
055:                    i.next();
056:                    count++;
057:                }
058:                return count;
059:            }
060:
061:            /**
062:             * Count statements in iterator 'it'
063:             * 
064:             * @param i
065:             *            the iterator
066:             * @return the size
067:             */
068:            public static int size(Iterator<?> i) {
069:                int count = 0;
070:                while (i.hasNext()) {
071:                    i.next();
072:                    count++;
073:                }
074:                return count;
075:            }
076:
077:            /**
078:             * Copy data from the source modelset to the target modelset. Iterates
079:             * through all named models of the source and adds each to the target. If a
080:             * named graph already exists in the target, the data will be added to it,
081:             * target models will not be replaced.
082:             * 
083:             * @param source
084:             *            the source, data from here is taken
085:             * @param target
086:             *            the target, data will be put here.
087:             * @throws ModelRuntimeException
088:             *             if the copying process has an error
089:             */
090:            public static void copy(ModelSet source, ModelSet target)
091:                    throws ModelRuntimeException {
092:                for (Iterator<? extends Model> i = source.getModels(); i
093:                        .hasNext();) {
094:                    Model m = i.next();
095:                    m.open();
096:                    Model tm = target.getModel(m.getContextURI());
097:                    tm.open();
098:                    copy(m, tm);
099:                }
100:                // copy default model
101:                Model m = source.getDefaultModel();
102:                m.open();
103:                Model tm = target.getDefaultModel();
104:                tm.open();
105:                copy(m, tm);
106:            }
107:
108:            /**
109:             * If the two models come from different implementations, copying blank
110:             * nodes needs special care
111:             * 
112:             * @param source
113:             * @param target
114:             */
115:            public static void copy(Model source, Model target) {
116:                if (source.getUnderlyingModelImplementation().equals(
117:                        target.getUnderlyingModelImplementation().getClass())) {
118:                    // same implementation, use easy copy
119:                    ClosableIterator<Statement> it = source.iterator();
120:                    target.addAll(it);
121:                    it.close();
122:                } else {
123:                    Map<String, BlankNode> bnodeSourceId2bnodeTarget = new HashMap<String, BlankNode>();
124:                    ClosableIterator<Statement> it = source.iterator();
125:                    while (it.hasNext()) {
126:                        Statement stmt = it.next();
127:                        boolean blankSubject = stmt.getSubject() instanceof  BlankNode;
128:                        boolean blankObject = stmt.getObject() instanceof  BlankNode;
129:
130:                        if (blankSubject || blankObject) {
131:                            Resource s;
132:                            if (blankSubject) {
133:                                s = transform(stmt.getSubject().asBlankNode(),
134:                                        bnodeSourceId2bnodeTarget, target);
135:                            } else {
136:                                s = stmt.getSubject();
137:                            }
138:
139:                            Node o;
140:                            // use mapping from node-IDs in impl-source to blank nodes
141:                            // in impl-target
142:                            if (blankObject) {
143:                                o = transform(stmt.getObject().asBlankNode(),
144:                                        bnodeSourceId2bnodeTarget, target);
145:                            } else {
146:                                o = stmt.getObject();
147:                            }
148:                            target.addStatement(s, stmt.getPredicate(), o);
149:                        } else {
150:                            target.addStatement(stmt);
151:                        }
152:                    }
153:                    it.close();
154:                }
155:
156:            }
157:
158:            private static BlankNode transform(BlankNode source,
159:                    Map<String, BlankNode> map, Model target) {
160:                String bnodeSourceId = source.getInternalID();
161:                BlankNode bnodeTarget = map.get(bnodeSourceId);
162:                if (bnodeTarget == null) {
163:                    bnodeTarget = target.createBlankNode();
164:                    map.put(bnodeSourceId, bnodeTarget);
165:                }
166:                return bnodeTarget;
167:            }
168:
169:            /**
170:             * Remove data that is listed in the source modelset from the target
171:             * modelset. Iterates through all named models of the source and removes the
172:             * listed triples from the target.
173:             * 
174:             * @param source
175:             *            the source, data from here is evaluated
176:             * @param target
177:             *            the target, data contained in source and target are removed
178:             *            from here
179:             * @throws ModelRuntimeException
180:             *             if the deleting process has an error
181:             */
182:            public static void removeFrom(ModelSet source, ModelSet target)
183:                    throws ModelRuntimeException {
184:                // remove
185:                ClosableIterator<? extends Model> it = source.getModels();
186:
187:                while (it.hasNext()) {
188:                    Model m = it.next();
189:                    ClosableIterator<Statement> modelIt = m.iterator();
190:                    target.getModel(m.getContextURI()).removeAll(modelIt);
191:                    modelIt.close();
192:                }
193:                it.close();
194:                // remove stuff contained in default model
195:                ClosableIterator<Statement> modelIt = source.getDefaultModel()
196:                        .iterator();
197:                target.getDefaultModel().removeAll(modelIt);
198:                modelIt.close();
199:            }
200:
201:            /**
202:             * @param a
203:             * @param b
204:             * @param result
205:             * @return the result after executing the intersection
206:             * @throws ModelRuntimeException
207:             */
208:            public static Model intersection(Model a, Model b, Model result)
209:                    throws ModelRuntimeException {
210:                for (Statement s : a) {
211:                    if (b.contains(s)) {
212:                        result.addStatement(s);
213:                    }
214:                }
215:                return result;
216:            }
217:
218:            /**
219:             * @param a
220:             * @param b
221:             * @param result
222:             * @return the result after executing the union
223:             * @throws ModelRuntimeException
224:             */
225:            public static Model union(Model a, Model b, Model result)
226:                    throws ModelRuntimeException {
227:                ClosableIterator<Statement> it = a.iterator();
228:                result.addAll(it);
229:                it.close();
230:                it = b.iterator();
231:                result.addAll(it);
232:                it.close();
233:                return result;
234:            }
235:
236:            /**
237:             * @param a
238:             * @param b
239:             * @param result
240:             * @return the result after executing the complement of b in a (a\b)
241:             * @throws ModelRuntimeException
242:             */
243:            public static Model complement(Model a, Model b, Model result)
244:                    throws ModelRuntimeException {
245:                ClosableIterator<Statement> it = a.iterator();
246:                result.addAll(it);
247:                it.close();
248:                it = b.iterator();
249:                result.removeAll(it);
250:                it.close();
251:                return result;
252:            }
253:
254:            /**
255:             * Convert the input file, interpreted in the inputSyntax to outputFile, in
256:             * outputSyntax.
257:             * 
258:             * @param in
259:             *            input File
260:             * @param inSyntax
261:             * @param out
262:             *            output File
263:             * @param outSyntax
264:             * @throws FileNotFoundException
265:             */
266:            public static void convert(File in, Syntax inSyntax, File out,
267:                    Syntax outSyntax) throws FileNotFoundException {
268:                if (!in.exists())
269:                    throw new FileNotFoundException("Input file "
270:                            + in.getAbsolutePath() + " not found");
271:
272:                if (!out.getParentFile().exists())
273:                    out.getParentFile().mkdirs();
274:
275:                Model m = RDF2Go.getModelFactory().createModel();
276:                m.open();
277:                FileReader fr = null;
278:                FileWriter fw = null;
279:                try {
280:                    fr = new FileReader(in);
281:                    m.readFrom(fr, inSyntax);
282:                    fw = new FileWriter(out);
283:                    m.writeTo(fw, outSyntax);
284:
285:                } catch (ModelRuntimeException e) {
286:                    throw new RuntimeException(e);
287:                } catch (IOException e) {
288:                    throw new RuntimeException(e);
289:                } finally {
290:                    if (fr != null)
291:                        try {
292:                            fr.close();
293:                        } catch (IOException e) {
294:                            throw new RuntimeException(e);
295:                        }
296:                    if (fw != null)
297:                        try {
298:                            fw.close();
299:                        } catch (IOException e) {
300:                            throw new RuntimeException(e);
301:                        }
302:                }
303:                m.close();
304:            }
305:
306:            /**
307:             * @param in
308:             * @param inSyntax
309:             * @return a model with the content from 'in'. Model is open.
310:             * @throws ModelRuntimeException
311:             * @throws IOException
312:             * @deprecated This method creates new models via RDF2Go. If multiple model
313:             *             factories are used, this might be wrong. Use instead public
314:             *             static void loadFromFile(File in, Syntax inSyntax, Model
315:             *             sinkModel)
316:             */
317:            @Deprecated
318:            public static Model loadFromFile(File in, Syntax inSyntax)
319:                    throws ModelRuntimeException, IOException {
320:                Model model = RDF2Go.getModelFactory().createModel();
321:                model.open();
322:                FileInputStream fin = new FileInputStream(in);
323:                model.readFrom(fin, inSyntax);
324:                return model;
325:            }
326:
327:            /**
328:             * Convenience method to load data from file in in syntax inSyntax and write
329:             * loaded triples to sinkModel.
330:             * 
331:             * @param in
332:             * @param inSyntax
333:             * @param sinkModel
334:             *            where to write the loaded content. This model is not cleared.
335:             *            This model should be open.
336:             * @return
337:             * @throws ModelRuntimeException
338:             * @throws IOException
339:             */
340:            public static void loadFromFile(File in, Syntax inSyntax,
341:                    Model sinkModel) throws ModelRuntimeException, IOException {
342:                if (!sinkModel.isOpen())
343:                    throw new IllegalArgumentException("SinkModel must be open");
344:                FileInputStream fin = new FileInputStream(in);
345:                try {
346:                    sinkModel.readFrom(fin, inSyntax);
347:                } finally {
348:                    if (fin != null)
349:                        fin.close();
350:                }
351:            }
352:
353:            public static void writeToFile(Model model, File outFile,
354:                    Syntax outSyntax) throws ModelRuntimeException, IOException {
355:                FileOutputStream fout = new FileOutputStream(outFile);
356:                try {
357:                    model.writeTo(fout, outSyntax);
358:                } finally {
359:                    if (fout != null)
360:                        fout.close();
361:                }
362:            }
363:
364:            /**
365:             * Merge all input files into one model and export to outfile in output
366:             * syntax
367:             * 
368:             * @throws IOException
369:             * @throws ModelRuntimeException
370:             */
371:            public static void convert(File[] inFiles, Syntax[] inSyntax,
372:                    File out, Syntax outSyntax) throws ModelRuntimeException,
373:                    IOException {
374:                Model merged = RDF2Go.getModelFactory().createModel();
375:
376:                for (int i = 0; i < inFiles.length; i++) {
377:                    Model inModel = loadFromFile(inFiles[i], inSyntax[i]);
378:                    ClosableIterator<Statement> it = inModel.iterator();
379:                    merged.addAll(it);
380:                    it.close();
381:                }
382:                writeToFile(merged, out, outSyntax);
383:            }
384:        }
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.