Source Code Cross Referenced for OntModelSpec.java in  » RSS-RDF » Jena-2.5.5 » com » hp » hpl » jena » ontology » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » RSS RDF » Jena 2.5.5 » com.hp.hpl.jena.ontology 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*****************************************************************************
002:         * Source code information
003:         * -----------------------
004:         * Original author    Ian Dickinson, HP Labs Bristol
005:         * Author email       Ian.Dickinson@hp.com
006:         * Package            Jena 2
007:         * Web                http://sourceforge.net/projects/jena/
008:         * Created            13-May-2003
009:         * Filename           $RCSfile: OntModelSpec.java,v $
010:         * Revision           $Revision: 1.54 $
011:         * Release status     $State: Exp $
012:         *
013:         * Last modified on   $Date: 2008/01/15 08:19:17 $
014:         *               by   $Author: chris-dollin $
015:         *
016:         * (c) Copyright 2002, 2003, 204, Hewlett-Packard Development Company, LP
017:         * (see footer for full conditions)
018:         *****************************************************************************/package com.hp.hpl.jena.ontology;
019:
020:        // Imports
021:        ///////////////
022:
023:        import com.hp.hpl.jena.assembler.*;
024:        import com.hp.hpl.jena.ontology.impl.OntModelImpl;
025:        import com.hp.hpl.jena.rdf.model.*;
026:        import com.hp.hpl.jena.reasoner.Reasoner;
027:        import com.hp.hpl.jena.reasoner.ReasonerFactory;
028:        import com.hp.hpl.jena.reasoner.rulesys.*;
029:        import com.hp.hpl.jena.reasoner.transitiveReasoner.TransitiveReasonerFactory;
030:        import com.hp.hpl.jena.shared.JenaException;
031:
032:        /**
033:         * <p>
034:         * Encapsulates a description of the components of an ontology model, including the
035:         * storage scheme, reasoner and language profile.
036:         * </p>
037:         *
038:         * @author Ian Dickinson, HP Labs
039:         *         (<a  href="mailto:Ian.Dickinson@hp.com" >email</a>)
040:         * @version CVS $Id: OntModelSpec.java,v 1.54 2008/01/15 08:19:17 chris-dollin Exp $
041:         */
042:        public class OntModelSpec {
043:            // Constants
044:            //////////////////////////////////
045:            // Static variables
046:            //////////////////////////////////
047:
048:            /** A specification for OWL models that are stored in memory and do no additional entailment reasoning */
049:            public static final OntModelSpec OWL_MEM = new OntModelSpec(
050:                    ModelFactory.createMemModelMaker(), null, null,
051:                    ProfileRegistry.OWL_LANG);
052:
053:            /** A specification for OWL models that are stored in memory and use the RDFS inferencer for additional entailments */
054:            public static final OntModelSpec OWL_MEM_RDFS_INF = new OntModelSpec(
055:                    ModelFactory.createMemModelMaker(), null,
056:                    RDFSRuleReasonerFactory.theInstance(),
057:                    ProfileRegistry.OWL_LANG);
058:
059:            /** A specification for OWL models that are stored in memory and use the transitive inferencer for additional entailments */
060:            public static final OntModelSpec OWL_MEM_TRANS_INF = new OntModelSpec(
061:                    ModelFactory.createMemModelMaker(), null,
062:                    TransitiveReasonerFactory.theInstance(),
063:                    ProfileRegistry.OWL_LANG);
064:
065:            /** A specification for OWL models that are stored in memory and use the OWL rules inference engine for additional entailments */
066:            public static final OntModelSpec OWL_MEM_RULE_INF = new OntModelSpec(
067:                    ModelFactory.createMemModelMaker(), null,
068:                    OWLFBRuleReasonerFactory.theInstance(),
069:                    ProfileRegistry.OWL_LANG);
070:
071:            /** A specification for OWL models that are stored in memory and use the micro OWL rules inference engine for additional entailments */
072:            public static final OntModelSpec OWL_MEM_MICRO_RULE_INF = new OntModelSpec(
073:                    ModelFactory.createMemModelMaker(), null,
074:                    OWLMicroReasonerFactory.theInstance(),
075:                    ProfileRegistry.OWL_LANG);
076:
077:            /** A specification for OWL models that are stored in memory and use the mini OWL rules inference engine for additional entailments */
078:            public static final OntModelSpec OWL_MEM_MINI_RULE_INF = new OntModelSpec(
079:                    ModelFactory.createMemModelMaker(), null,
080:                    OWLMiniReasonerFactory.theInstance(),
081:                    ProfileRegistry.OWL_LANG);
082:
083:            /** A specification for OWL DL models that are stored in memory and do no additional entailment reasoning */
084:            public static final OntModelSpec OWL_DL_MEM = new OntModelSpec(
085:                    ModelFactory.createMemModelMaker(), null, null,
086:                    ProfileRegistry.OWL_DL_LANG);
087:
088:            /** A specification for OWL DL models that are stored in memory and use the RDFS inferencer for additional entailments */
089:            public static final OntModelSpec OWL_DL_MEM_RDFS_INF = new OntModelSpec(
090:                    ModelFactory.createMemModelMaker(), null,
091:                    RDFSRuleReasonerFactory.theInstance(),
092:                    ProfileRegistry.OWL_DL_LANG);
093:
094:            /** A specification for OWL DL models that are stored in memory and use the transitive inferencer for additional entailments */
095:            public static final OntModelSpec OWL_DL_MEM_TRANS_INF = new OntModelSpec(
096:                    ModelFactory.createMemModelMaker(), null,
097:                    TransitiveReasonerFactory.theInstance(),
098:                    ProfileRegistry.OWL_DL_LANG);
099:
100:            /** A specification for OWL DL models that are stored in memory and use the OWL rules inference engine for additional entailments */
101:            public static final OntModelSpec OWL_DL_MEM_RULE_INF = new OntModelSpec(
102:                    ModelFactory.createMemModelMaker(), null,
103:                    OWLFBRuleReasonerFactory.theInstance(),
104:                    ProfileRegistry.OWL_DL_LANG);
105:
106:            /** A specification for OWL Lite models that are stored in memory and do no entailment additional reasoning */
107:            public static final OntModelSpec OWL_LITE_MEM = new OntModelSpec(
108:                    ModelFactory.createMemModelMaker(), null, null,
109:                    ProfileRegistry.OWL_LITE_LANG);
110:
111:            /** A specification for OWL Lite models that are stored in memory and use the transitive inferencer for additional entailments */
112:            public static final OntModelSpec OWL_LITE_MEM_TRANS_INF = new OntModelSpec(
113:                    ModelFactory.createMemModelMaker(), null,
114:                    TransitiveReasonerFactory.theInstance(),
115:                    ProfileRegistry.OWL_LITE_LANG);
116:
117:            /** A specification for OWL Lite models that are stored in memory and use the RDFS inferencer for additional entailments */
118:            public static final OntModelSpec OWL_LITE_MEM_RDFS_INF = new OntModelSpec(
119:                    ModelFactory.createMemModelMaker(), null,
120:                    RDFSRuleReasonerFactory.theInstance(),
121:                    ProfileRegistry.OWL_LITE_LANG);
122:
123:            /** A specification for OWL Lite models that are stored in memory and use the OWL rules inference engine for additional entailments */
124:            public static final OntModelSpec OWL_LITE_MEM_RULES_INF = new OntModelSpec(
125:                    ModelFactory.createMemModelMaker(), null,
126:                    OWLFBRuleReasonerFactory.theInstance(),
127:                    ProfileRegistry.OWL_LITE_LANG);
128:
129:            /** A specification for DAML models that are stored in memory and do no additional entailment reasoning */
130:            public static final OntModelSpec DAML_MEM = new OntModelSpec(
131:                    ModelFactory.createMemModelMaker(), null, null,
132:                    ProfileRegistry.DAML_LANG);
133:
134:            /** A specification for DAML models that are stored in memory and use the transitive reasoner for entailments */
135:            public static final OntModelSpec DAML_MEM_TRANS_INF = new OntModelSpec(
136:                    ModelFactory.createMemModelMaker(), null,
137:                    TransitiveReasonerFactory.theInstance(),
138:                    ProfileRegistry.DAML_LANG);
139:
140:            /** A specification for DAML models that are stored in memory and use the RDFS inferencer for additional entailments */
141:            public static final OntModelSpec DAML_MEM_RDFS_INF = new OntModelSpec(
142:                    ModelFactory.createMemModelMaker(), null,
143:                    RDFSRuleReasonerFactory.theInstance(),
144:                    ProfileRegistry.DAML_LANG);
145:
146:            /** A specification for DAML models that are stored in memory and use a subset of the DAML semantic model additional entailments */
147:            public static final OntModelSpec DAML_MEM_RULE_INF = new OntModelSpec(
148:                    ModelFactory.createMemModelMaker(), null,
149:                    DAMLMicroReasonerFactory.theInstance(),
150:                    ProfileRegistry.DAML_LANG);
151:
152:            /** A specification for RDFS ontology models that are stored in memory and do no additional entailment reasoning */
153:            public static final OntModelSpec RDFS_MEM = new OntModelSpec(
154:                    ModelFactory.createMemModelMaker(), null, null,
155:                    ProfileRegistry.RDFS_LANG);
156:
157:            /** A specification for RDFS ontology models that are stored in memory and use the transitive reasoner for entailments */
158:            public static final OntModelSpec RDFS_MEM_TRANS_INF = new OntModelSpec(
159:                    ModelFactory.createMemModelMaker(), null,
160:                    TransitiveReasonerFactory.theInstance(),
161:                    ProfileRegistry.RDFS_LANG);
162:
163:            /** A specification for RDFS ontology models that are stored in memory and use the RDFS inferencer for additional entailments */
164:            public static final OntModelSpec RDFS_MEM_RDFS_INF = new OntModelSpec(
165:                    ModelFactory.createMemModelMaker(), null,
166:                    RDFSRuleReasonerFactory.theInstance(),
167:                    ProfileRegistry.RDFS_LANG);
168:
169:            // Instance variables
170:            //////////////////////////////////
171:
172:            /** The specification document manager */
173:            protected OntDocumentManager m_docManager = null;
174:
175:            /** The specification reasoner */
176:            protected Reasoner m_reasoner = null;
177:
178:            /** The language URI for the ontology */
179:            protected String m_languageURI;
180:
181:            /** The ontology language profile */
182:            protected Profile m_profile = null;
183:
184:            /** The reasoner factory for creating the reasoner on demand */
185:            protected ReasonerFactory m_rFactory = null;
186:
187:            /** The ModelMaker used for creating imported models */
188:            protected ModelMaker m_importsMaker;
189:
190:            /** the name of the base model in the baseModelMaker, if specified */
191:            protected String m_baseModelName;
192:
193:            /** the ModelGetter which will be used - eventually - for imports */
194:            protected ModelGetter importModelGetter;
195:
196:            // Constructors
197:            //////////////////////////////////
198:
199:            /**
200:             * <p>Construct a new ontology model specification with the given specification parameters</p>
201:             * @param importsMaker The model maker, which will be used to construct stores for statements in the
202:             * imported ontologies and the base ontology. Use null to get a default (memory) model maker.
203:             * @param docMgr The document manager, or null for the default document manager.
204:             * @param rFactory The factory for the reasoner to use to infer additional triples in the model, or null for no reasoner
205:             * @param languageURI The URI of the ontology language. Required.
206:             */
207:            public OntModelSpec(ModelMaker importsMaker,
208:                    OntDocumentManager docMgr, ReasonerFactory rFactory,
209:                    String languageURI) {
210:                this (ModelFactory.createMemModelMaker(), importsMaker, docMgr,
211:                        rFactory, languageURI);
212:            }
213:
214:            /**
215:             * Construct a new ontology model specification from the supplied components.
216:             * @param baseMaker the model-maker to use for the base model
217:             * @param importsMaker the model-maker to use for imported models
218:             * @param docMgr the document manager (null for the default manager)
219:             * @param rFactory the reasoner (null for no reasoner)
220:             * @param languageURI the ontology language URI (must not be null)
221:             */
222:            public OntModelSpec(ModelMaker baseMaker, ModelMaker importsMaker,
223:                    OntDocumentManager docMgr, ReasonerFactory rFactory,
224:                    String languageURI) {
225:                this (null, baseMaker, importsMaker, docMgr, rFactory,
226:                        languageURI);
227:            }
228:
229:            protected ModelMaker maker;
230:
231:            /**
232:             * Construct a new ontology model specification from the supplied components.
233:             * @param baseModelName the name of the model in the baseModelMaker
234:             * @param baseMaker the model-maker to use for the base model
235:             * @param importsMaker the model-maker to use for imported models
236:             * @param docMgr the document manager (null for the default manager)
237:             * @param rFactory the reasoner (null for no reasoner)
238:             * @param languageURI the ontology language URI (must not be null)
239:             */
240:            public OntModelSpec(String baseModelName, ModelMaker baseMaker,
241:                    ModelMaker importsMaker, OntDocumentManager docMgr,
242:                    ReasonerFactory rFactory, String languageURI) {
243:                // super( baseMaker );
244:                this .maker = baseMaker;
245:                m_baseModelName = baseModelName;
246:                m_importsMaker = importsMaker == null ? ModelFactory
247:                        .createMemModelMaker() : importsMaker;
248:                setDocumentManager(docMgr);
249:                setReasonerFactory(rFactory);
250:
251:                if (languageURI == null) {
252:                    throw new IllegalArgumentException(
253:                            "Cannot create OntModelSpec with a null ontology language");
254:                }
255:                setLanguage(languageURI);
256:            }
257:
258:            /**
259:             * <p>Create one model spec as a copy of another. This is useful when what is required is similar to
260:             * an existing spec, but with some changes. <strong>Note:</strong> this is only a shallow copy, so the
261:             * structured objects (reasoners, document managers, etc) are not themselves copied. Thus, even after
262:             * calling this copy constructor, making a change to the document manager in the copy specification
263:             * will also affect the one that the copy was made from. The correct idiom is to replace the object
264:             * before side-effecting it, e.g:
265:             * <code><pre>
266:             *   OntModelSpec newSpec = new OntModelSpec( existingSpec );
267:             *   newSpec.setDocumentManager( new OntDocumentManager() );
268:             *   newSpec.getDocumentManager().setMetaDataSearchPath( "..." );
269:             * </pre></code>
270:             * @param spec
271:             */
272:            public OntModelSpec(OntModelSpec spec) {
273:                this (spec.getBaseModelMaker(), spec.getImportModelMaker(), spec
274:                        .getDocumentManager(), spec.getReasonerFactory(), spec
275:                        .getLanguage());
276:            }
277:
278:            public boolean equals(Object other) {
279:                return other instanceof  OntModelSpec
280:                        && same((OntModelSpec) other);
281:            }
282:
283:            private boolean same(OntModelSpec other) {
284:                return getLanguage().equals(other.getLanguage())
285:                        && sameReasonerFactory(other)
286:                        && getDocumentManager().equals(
287:                                other.getDocumentManager())
288:                        && getImportModelGetter().equals(
289:                                other.getImportModelGetter());
290:            }
291:
292:            private boolean sameReasonerFactory(OntModelSpec other) {
293:                ReasonerFactory rf = getReasonerFactory();
294:                ReasonerFactory orf = other.getReasonerFactory();
295:                return rf == null ? orf == null : rf.equals(orf);
296:            }
297:
298:            /**
299:             * Answer the model maker used for creating imported models.
300:             * @return The ModelMaker that is used to get or create a model used
301:             * to hold imports to an OntModel.
302:             */
303:            public ModelMaker getImportModelMaker() {
304:                return m_importsMaker;
305:            }
306:
307:            /**
308:             * Answer the model maker used for creating base models.
309:             */
310:            public ModelMaker getBaseModelMaker() {
311:                return maker;
312:            }
313:
314:            public ModelGetter getImportModelGetter() {
315:                if (importModelGetter == null)
316:                    importModelGetter = m_importsMaker; //  fabricateModelGetter();
317:                return importModelGetter;
318:            }
319:
320:            public void setImportModelGetter(ModelGetter mg) {
321:                importModelGetter = mg;
322:            }
323:
324:            /**
325:                Answer the OntModelSpec described using the Jena Assembler vocabulary
326:                properties of <code>root</code>. If the assembled resource is not
327:                an OntModelSpec, throw an exception reporting the constructed class.
328:             */
329:            public static OntModelSpec assemble(Resource root) {
330:                Object assembled = Assembler.general.open(root);
331:                if (!(assembled instanceof  OntModelSpec))
332:                    throw new JenaException(
333:                            "assemble: expected an OntModelSpec, but got a "
334:                                    + assembled.getClass().getName());
335:                return (OntModelSpec) assembled;
336:            }
337:
338:            /**
339:                 Answer the OntModelSpec described using the Jena Assembler vocabulary
340:                properties of the single resource in <code>model</code> of type
341:                JA:OntModelSpec.
342:             */
343:            public static OntModelSpec assemble(Model model) {
344:                return assemble(AssemblerHelp
345:                        .singleRoot(model, JA.OntModelSpec));
346:            }
347:
348:            /**
349:             * <p>Answer a default specification for the given language URI. This default
350:             * will typically use a memory model and have minimal inferencing capabilities.
351:             * Specifically, OWL and RDFS languages will have RDFS level inferencing
352:             * capability (chosen to give a reasonable balance between power and efficiency
353:             * of computation), and DAML language will have the minimal DAML rule reasoner.
354:             * To get other (more powerful or less powerful) reasoning capabilities, users
355:             * should create ontology models by passing an explicit <code>OntModelSpec</code>
356:             * parameter to the
357:             * {@link ModelFactory#createOntologyModel( OntModelSpec, Model ) model factory}.
358:             * </p>
359:             * @param languageURI The ontology language we want a default model spec for
360:             * @return The default model spec for that language
361:             * @exception OntologyException if the URI is not a recognised name of an ontology language
362:             */
363:            public static OntModelSpec getDefaultSpec(String languageURI) {
364:                if (languageURI.equals(ProfileRegistry.OWL_LANG)) {
365:                    return OWL_MEM_RDFS_INF;
366:                } else if (languageURI.equals(ProfileRegistry.OWL_DL_LANG)) {
367:                    return OWL_DL_MEM_RDFS_INF;
368:                } else if (languageURI.equals(ProfileRegistry.OWL_LITE_LANG)) {
369:                    return OWL_LITE_MEM_RDFS_INF;
370:                } else if (languageURI.equals(ProfileRegistry.DAML_LANG)) {
371:                    return DAML_MEM_RULE_INF;
372:                } else if (languageURI.equals(ProfileRegistry.RDFS_LANG)) {
373:                    return RDFS_MEM_RDFS_INF;
374:                } else {
375:                    throw new OntologyException(
376:                            "Did not recognise this language URI, so cannot determine default model spec: "
377:                                    + languageURI);
378:                }
379:            }
380:
381:            /**
382:             * <p>Answer the document manager for this model specification. Defaults to
383:             * a standard instance of {@link OntDocumentManager}</p>
384:             * @return The document manager to be used by models matching this specification
385:             */
386:            public OntDocumentManager getDocumentManager() {
387:                if (m_docManager == null) {
388:                    // need to set the default document manager
389:                    m_docManager = OntDocumentManager.getInstance();
390:                }
391:
392:                return m_docManager;
393:            }
394:
395:            /**
396:             * <p>Set the document manager in this specification</p>
397:             * @param docMgr The new document manager
398:             */
399:            public void setDocumentManager(OntDocumentManager docMgr) {
400:                m_docManager = docMgr;
401:            }
402:
403:            /**
404:             * <p>Set the model maker that will be used when the ontology model needs to create
405:             * an additional container for an imported ontology</p>
406:             * @param maker The new model maker to use
407:             */
408:            public void setImportModelMaker(ModelMaker maker) {
409:                m_importsMaker = maker;
410:            }
411:
412:            /**
413:             * <p>Set the model maker used for base models.</p>
414:             * @param m The model maker that is used to create the base model
415:             * if one is not supplied when a model is created.
416:             */
417:            public void setBaseModelMaker(ModelMaker m) {
418:                this .maker = m;
419:            }
420:
421:            /**
422:             * <p>Answer the reasoner that will be used to infer additional entailed
423:             * triples in the ontology model.</p>
424:             * @return The reasoner for this specification
425:             */
426:            public Reasoner getReasoner() {
427:                if (m_reasoner == null && m_rFactory != null) {
428:                    // we need to create the reasoner
429:                    // create a new one on each call since reasoners aren't guaranteed to be reusable
430:                    return m_rFactory.create(null);
431:                }
432:
433:                return m_reasoner;
434:            }
435:
436:            /**
437:             * <p>Set the reasoner that will be used by ontology models that conform
438:             * to this specification to compute entailments.
439:             * <strong>Note:</strong> The reasoner is generated on demand by the reasoner
440:             * factory. To prevent this spec from having a reasoner, set the reasoner factory
441:             * to null, see {@link #setReasonerFactory}.
442:             * </p>
443:             * @param reasoner The new reasoner
444:             */
445:            public void setReasoner(Reasoner reasoner) {
446:                m_reasoner = reasoner;
447:            }
448:
449:            /**
450:             * <p>Set the factory object that will be used to generate the reasoner object
451:             * for this model specification. <strong>Note</strong> that the reasoner itself is cached, so setting
452:             * the factory after a call to {@link #getReasoner()} will have no effect.</p>
453:             * @param rFactory The new reasoner factory, or null to prevent any reasoner being used
454:             */
455:            public void setReasonerFactory(ReasonerFactory rFactory) {
456:                m_rFactory = rFactory;
457:            }
458:
459:            /**
460:             * <p>Answer the current reasoner factory</p>
461:             * @return The reasoner factory, or null.
462:             */
463:            public ReasonerFactory getReasonerFactory() {
464:                return m_rFactory;
465:            }
466:
467:            /**
468:             * <p>Answer the URI of the ontology language to use when constructing
469:             * models from this specification.  Well known language URI's are
470:             * available from the {@link ProfileRegistry}</p>
471:             * @return The ontology language URI
472:             */
473:            public String getLanguage() {
474:                return m_languageURI;
475:            }
476:
477:            /**
478:             * <p>Set the URI of the ontology to use for models that conform to
479:             * this specification.</p>
480:             * @param languageURI The new language URI
481:             * @exception OntologyException if the URI does not map to a known language profile
482:             */
483:            public void setLanguage(String languageURI) {
484:                m_languageURI = languageURI;
485:                m_profile = ProfileRegistry.getInstance().getProfile(
486:                        m_languageURI);
487:
488:                if (m_profile == null) {
489:                    throw new OntologyException(
490:                            "Could not determine an ontology language profile for URI "
491:                                    + m_languageURI);
492:                }
493:            }
494:
495:            /**
496:             * <p>Answer the language profile for this ontology specification</p>
497:             * @return An ontology language profile object
498:             */
499:            public Profile getProfile() {
500:                return m_profile;
501:            }
502:
503:            /**
504:             *  <p>Create an OntModel according to this model specification.
505:             *  The base model comes from the attached base ModelMaker.</p>
506:             *  @return an OntModel satisfying this specification
507:             */
508:            public Model doCreateModel() {
509:                Model m = m_baseModelName == null ? maker.createFreshModel()
510:                        : maker.createModel(m_baseModelName);
511:                return new OntModelImpl(this , m);
512:            }
513:
514:            /**
515:             * <p>Create an OntModel according to this model specification.
516:             * The base model comes from the underlying ModelMaker and is named by the
517:             *  given name.</p>
518:             */
519:            public Model implementCreateModelOver(String name) {
520:                return new OntModelImpl(this , maker.createModel(name, false));
521:            }
522:
523:            /**
524:                 Answer a base model constructed according to this specification. This is used for the
525:                 &quot;base&quot; (i.e. non-imported) model for an OntModel.
526:             */
527:            public Model createBaseModel() {
528:                return ModelFactory.createDefaultModel();
529:            }
530:
531:        }
532:
533:        /*
534:         (c) Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP
535:         All rights reserved.
536:
537:         Redistribution and use in source and binary forms, with or without
538:         modification, are permitted provided that the following conditions
539:         are met:
540:
541:         1. Redistributions of source code must retain the above copyright
542:         notice, this list of conditions and the following disclaimer.
543:
544:         2. Redistributions in binary form must reproduce the above copyright
545:         notice, this list of conditions and the following disclaimer in the
546:         documentation and/or other materials provided with the distribution.
547:
548:         3. The name of the author may not be used to endorse or promote products
549:         derived from this software without specific prior written permission.
550:
551:         THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
552:         IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
553:         OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
554:         IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
555:         INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
556:         NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
557:         DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
558:         THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
559:         (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
560:         THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
561:         */
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