Source Code Cross Referenced for MSVValidator.java in  » Portal » stringbeans-3.5 » com » nabhinc » portal » config » impl » runtime » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Portal » stringbeans 3.5 » com.nabhinc.portal.config.impl.runtime 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        //
002:        // This file was generated by the JavaTM Architecture for XML Binding(JAXB) Reference Implementation, v1.0.4-b18-fcs 
003:        // See <a href="http://java.sun.com/xml/jaxb">http://java.sun.com/xml/jaxb</a> 
004:        // Any modifications to this file will be lost upon recompilation of the source schema. 
005:        // Generated on: 2005.03.04 at 10:20:40 PST 
006:        //
007:
008:        package com.nabhinc.portal.config.impl.runtime;
009:
010:        import javax.xml.bind.ValidationEvent;
011:
012:        import org.relaxng.datatype.Datatype;
013:        import org.xml.sax.SAXException;
014:        import org.xml.sax.helpers.AttributesImpl;
015:
016:        import com.sun.msv.grammar.IDContextProvider2;
017:        import com.sun.msv.util.LightStack;
018:        import com.sun.msv.util.StartTagInfo;
019:        import com.sun.msv.util.StringRef;
020:        import com.sun.msv.verifier.Acceptor;
021:        import com.sun.msv.verifier.regexp.StringToken;
022:        import com.sun.xml.bind.JAXBAssertionError;
023:        import com.sun.xml.bind.JAXBObject;
024:        import com.sun.xml.bind.RIElement;
025:        import com.sun.xml.bind.marshaller.IdentifiableObject;
026:        import com.sun.xml.bind.serializer.AbortSerializationException;
027:        import com.sun.xml.bind.serializer.Util;
028:        import com.sun.xml.bind.validator.Messages;
029:
030:        /**
031:         * XMLSerializer that calls the native interface of MSV and performs validation.
032:         * Used in a pair with a ValidationContext.
033:         * 
034:         * @author  Kohsuke Kawaguchi
035:         */
036:        public class MSVValidator implements  XMLSerializer, IDContextProvider2 {
037:            /** Current acceptor in use. */
038:            private Acceptor acceptor;
039:
040:            /** Context object that coordinates the entire validation effort. */
041:            private final ValidationContext context;
042:
043:            /** The object which we are validating. */
044:            private final ValidatableObject target;
045:
046:            final DefaultJAXBContextImpl jaxbContext;
047:
048:            /**
049:             * Acceptor stack. Whenever an element is found, the current acceptor is
050:             * pushed to the stack and new one is created.
051:             * 
052:             * LightStack is a light-weight stack implementation
053:             */
054:            private final LightStack stack = new LightStack();
055:
056:            public NamespaceContext2 getNamespaceContext() {
057:                return context.getNamespaceContext();
058:            }
059:
060:            /**
061:             * To use this class, call the static validate method.
062:             */
063:            private MSVValidator(DefaultJAXBContextImpl _jaxbCtx,
064:                    ValidationContext _ctxt, ValidatableObject vo) {
065:                jaxbContext = _jaxbCtx;
066:                acceptor = vo.createRawValidator().createAcceptor();
067:                context = _ctxt;
068:                target = vo;
069:            }
070:
071:            /**
072:             * Validates the specified object and reports any error to the context.
073:             */
074:            public static void validate(DefaultJAXBContextImpl jaxbCtx,
075:                    ValidationContext context, ValidatableObject vo)
076:                    throws SAXException {
077:                try {
078:                    new MSVValidator(jaxbCtx, context, vo)._validate();
079:                } catch (RuntimeException e) {
080:                    // sometimes when a conversion between Java object and
081:                    // lexical value fails, it may throw an exception like
082:                    // NullPointerException or NumberFormatException.
083:                    //
084:                    // catch them and report them as an error.
085:                    context.reportEvent(vo, e);
086:                }
087:            }
088:
089:            /** performs the validation to the object specified in the constructor. */
090:            private void _validate() throws SAXException {
091:                context.getNamespaceContext().startElement();
092:
093:                // validate attributes
094:                target.serializeURIs(this );
095:
096:                endNamespaceDecls();
097:
098:                target.serializeAttributes(this );
099:
100:                endAttributes();
101:
102:                // validate content model
103:                target.serializeBody(this );
104:                writePendingText();
105:
106:                context.getNamespaceContext().endElement();
107:
108:                if (!acceptor.isAcceptState(null)) {
109:                    // some elements are missing
110:                    // report error
111:                    StringRef ref = new StringRef();
112:                    acceptor.isAcceptState(ref);
113:                    context.reportEvent(target, ref.str);
114:                }
115:            }
116:
117:            public void endNamespaceDecls() throws SAXException {
118:                context.getNamespaceContext().endNamespaceDecls();
119:            }
120:
121:            public void endAttributes() throws SAXException {
122:                if (!acceptor.onEndAttributes(null, null)) {
123:                    // some required attributes are missing.
124:                    // report a validation error
125:                    // Note that we don't know which property of this object
126:                    // causes this error.
127:                    StringRef ref = new StringRef();
128:                    StartTagInfo sti = new StartTagInfo(currentElementUri,
129:                            currentElementLocalName, currentElementLocalName,
130:                            emptyAttributes, this );
131:                    acceptor.onEndAttributes(sti, ref);
132:                    context.reportEvent(target, ref.str);
133:                }
134:            }
135:
136:            /** stores text reported by the text method. */
137:            private StringBuffer buf = new StringBuffer();
138:
139:            public final void text(String text, String fieldName)
140:                    throws SAXException {
141:                if (text == null) {
142:                    reportMissingObjectError(fieldName);
143:                    return;
144:                }
145:
146:                if (buf.length() != 0)
147:                    buf.append(' ');
148:                buf.append(text);
149:            }
150:
151:            public void reportMissingObjectError(String fieldName)
152:                    throws SAXException {
153:                reportError(Util.createMissingObjectError(target, fieldName));
154:            }
155:
156:            // used to keep attribute names until the endAttribute method is called.
157:            private String attNamespaceUri;
158:            private String attLocalName;
159:            private boolean insideAttribute;
160:
161:            public void startAttribute(String uri, String local) {
162:                // we will do the processing at the end element
163:                this .attNamespaceUri = uri;
164:                this .attLocalName = local;
165:                insideAttribute = true;
166:            }
167:
168:            public void endAttribute() throws SAXException {
169:                insideAttribute = false;
170:                if (!acceptor
171:                        .onAttribute2(
172:                                attNamespaceUri,
173:                                attLocalName,
174:                                attLocalName /* we don't have QName, so just use the local name */,
175:                                buf.toString(), this , null, null)) {
176:
177:                    // either the name was incorrect (which is quite unlikely),
178:                    // or the value was wrong.
179:                    // report an error
180:                    StringRef ref = new StringRef();
181:                    acceptor.onAttribute2(attNamespaceUri, attLocalName,
182:                            attLocalName, buf.toString(), this , ref, null);
183:
184:                    context.reportEvent(target, ref.str);
185:                }
186:
187:                buf = new StringBuffer();
188:            }
189:
190:            private void writePendingText() throws SAXException {
191:                // assert(textBuf!=null);
192:                if (!acceptor.onText2(buf.toString(), this , null, null)) {
193:                    // this text is invalid.
194:                    // report an error
195:                    StringRef ref = new StringRef();
196:                    acceptor.onText2(buf.toString(), this , ref, null);
197:                    context.reportEvent(target, ref.str);
198:                }
199:
200:                if (buf.length() > 1024)
201:                    buf = new StringBuffer();
202:                else
203:                    buf.setLength(0);
204:            }
205:
206:            private String currentElementUri;
207:            private String currentElementLocalName;
208:
209:            public void startElement(String uri, String local)
210:                    throws SAXException {
211:                writePendingText();
212:
213:                context.getNamespaceContext().startElement();
214:
215:                stack.push(acceptor);
216:
217:                StartTagInfo sti = new StartTagInfo(uri, local, local,
218:                        emptyAttributes, this );
219:
220:                // we pass in an empty attributes, as there is just no way for us to
221:                // properly re-construct attributes. Fortunately, I know MSV is not using
222:                // attribute values, so this would work, but nevertheless this code is
223:                // ugly. This is one of the problems of the "middle" approach.
224:                Acceptor child = acceptor.createChildAcceptor(sti, null);
225:                if (child == null) {
226:                    // this element is invalid. probably, so this object is invalid
227:                    // report an error
228:                    StringRef ref = new StringRef();
229:                    child = acceptor.createChildAcceptor(sti, ref);
230:                    context.reportEvent(target, ref.str);
231:                }
232:
233:                this .currentElementUri = uri;
234:                this .currentElementLocalName = local;
235:
236:                acceptor = child;
237:            }
238:
239:            public void endElement() throws SAXException {
240:                writePendingText();
241:
242:                if (!acceptor.isAcceptState(null)) {
243:                    // some required elements are missing
244:                    // report error
245:                    StringRef ref = new StringRef();
246:                    acceptor.isAcceptState(ref);
247:                    context.reportEvent(target, ref.str);
248:                }
249:
250:                // pop the acceptor
251:                Acceptor child = acceptor;
252:                acceptor = (Acceptor) stack.pop();
253:                if (!acceptor.stepForward(child, null)) {
254:                    // some required elements are missing.
255:                    // report an error
256:                    StringRef ref = new StringRef();
257:                    acceptor.stepForward(child, ref); // force recovery and obtain an error message.
258:
259:                    context.reportEvent(target, ref.str);
260:                }
261:
262:                context.getNamespaceContext().endElement();
263:            }
264:
265:            public void childAsAttributes(JAXBObject o, String fieldName)
266:                    throws SAXException {
267:                // do nothing
268:
269:                // either the onMarshallableObjectInElement method
270:                // or the onMarshallableObjectInAttributeBody method will be 
271:                // called for every content tree objects.
272:                //
273:                // so we don't need to validate an object within this method.
274:            }
275:
276:            public void childAsURIs(JAXBObject o, String fieldName)
277:                    throws SAXException {
278:                // ditto.
279:            }
280:
281:            /** An empty <code>Attributes</code> object. */
282:            private static final AttributesImpl emptyAttributes = new AttributesImpl();
283:
284:            /** namespace URI of dummy elements. TODO: allocate one namespace URI for this. */
285:            public static final String DUMMY_ELEMENT_NS = "http://java.sun.com/jaxb/xjc/dummy-elements";
286:
287:            public void childAsBody(JAXBObject o, String fieldName)
288:                    throws SAXException {
289:                //final ValidatableObject vo = Util.toValidatableObject(o);
290:                final ValidatableObject vo = jaxbContext.getGrammarInfo()
291:                        .castToValidatableObject(o);
292:
293:                if (vo == null) {
294:                    reportMissingObjectError(fieldName);
295:                    return;
296:                }
297:
298:                if (insideAttribute)
299:                    childAsAttributeBody(vo, fieldName);
300:                else
301:                    childAsElementBody(o, vo);
302:            }
303:
304:            private void childAsElementBody(Object o, ValidatableObject vo)
305:                    throws SAXException {
306:                String intfName = vo.getPrimaryInterface().getName();
307:                intfName = intfName.replace('$', '.');
308:
309:                // if the object implements the RIElement interface,
310:                // add a marker attribute to the dummy element.
311:                //
312:                // For example, if the object is org.acme.impl.FooImpl,
313:                // the dummy element will look like
314:                // <{DUMMY_ELEMENT_NS}org.acme.Foo
315:                //          {<URI of this element>}:<local name of this element>="" />
316:                // 
317:                // This extra attribute is used to validate wildcards.
318:                //        AttributesImpl atts;
319:                //        if(o instanceof RIElement) {
320:                //            RIElement rie = (RIElement)o;
321:                //            atts = new AttributesImpl();
322:                //            atts.addAttribute(
323:                //                rie.____jaxb_ri____getNamespaceURI(),
324:                //                rie.____jaxb_ri____getLocalName(),
325:                //                rie.____jaxb_ri____getLocalName(),  // use local name as qname
326:                //                "CDATA",
327:                //                "");    // we don't care about the attribute value
328:                //        } else
329:                //            atts = emptyAttributes;
330:
331:                // feed a dummy element to the acceptor.
332:                StartTagInfo sti = new StartTagInfo(DUMMY_ELEMENT_NS, intfName,
333:                        intfName/*just pass the local name as QName.*/,
334:                        emptyAttributes, this );
335:
336:                Acceptor child = acceptor.createChildAcceptor(sti, null);
337:                if (child == null) {
338:                    // some required elements were missing. report errors
339:                    StringRef ref = new StringRef();
340:                    child = acceptor.createChildAcceptor(sti, ref);
341:                    context.reportEvent(target, ref.str);
342:                }
343:
344:                if (o instanceof  RIElement) {
345:                    RIElement rie = (RIElement) o;
346:                    if (!child.onAttribute2(rie
347:                            .____jaxb_ri____getNamespaceURI(), rie
348:                            .____jaxb_ri____getLocalName(), rie
349:                            .____jaxb_ri____getLocalName(), "", null, null,
350:                            null))
351:
352:                        // this object is not a valid member of the wildcard
353:                        context.reportEvent(target, Messages.format(
354:                                Messages.INCORRECT_CHILD_FOR_WILDCARD, rie
355:                                        .____jaxb_ri____getNamespaceURI(), rie
356:                                        .____jaxb_ri____getLocalName()));
357:                }
358:
359:                child.onEndAttributes(sti, null);
360:
361:                if (!acceptor.stepForward(child, null)) {
362:                    // this can't be possible, as the dummy element was 
363:                    // generated by XJC.
364:                    throw new JAXBAssertionError();
365:                }
366:
367:                // we need a separate validator instance to validate a child object
368:                context.validate(vo);
369:
370:            }
371:
372:            private void childAsAttributeBody(ValidatableObject vo,
373:                    String fieldName) throws SAXException {
374:                /*
375:                Dirty quick hack. When we split a schema into fragments, basically
376:                every chlid object needs a place holder in the fragment
377:                (so that the parent schema fragment can correctly validate that the
378:                child objects are at their supposed places.)
379:                
380:                For example, cconsider the following schema:
381:                
382:                imagine:
383:                <class>
384:                  <attribute>
385:                    <list>
386:                      <oneOrMore>
387:                        <ref name="bar"/>
388:                      </oneOrMore>
389:                    </list>
390:                  </attribute>
391:                </class>
392:                
393:                In our algorithm, the corresponding schema fragment will be:
394:                
395:                <class>
396:                  <attribute>
397:                    <list>
398:                      <oneOrMore>
399:                        <value>\u0000full.class.name.of.BarImpl</value>
400:                      </oneOrMore>
401:                    </list>
402:                  </attribute>
403:                </class>
404:                
405:                If we find a child object inside an attribute
406:                (that's why we are in this method BTW),
407:                we generate a class name (with a special marker \u0000).
408:                 */
409:
410:                // put a class name with a special marker \u0000. This char is an invalid
411:                // XML char, so sensible datatypes should reject this (although many
412:                // datatype implementations will accept it in actuality)
413:                text("\u0000" + vo.getPrimaryInterface().getName(), fieldName);
414:
415:                // validate a child object
416:                context.validate(vo);
417:            }
418:
419:            public void reportError(ValidationEvent e)
420:                    throws AbortSerializationException {
421:                context.reportEvent(target, e);
422:            }
423:
424:            //
425:            //
426:            // ID/IDREF validation
427:            //
428:            //
429:            public String onID(IdentifiableObject owner, String value)
430:                    throws SAXException {
431:                return context.onID(target, value);
432:            }
433:
434:            public String onIDREF(IdentifiableObject value) throws SAXException {
435:                return context.onIDREF(target, value.____jaxb____getId());
436:            }
437:
438:            //
439:            //  
440:            // ValidationContext implementation. Used by MSV to obtain
441:            // contextual information related to validation.
442:            //
443:            //
444:            public String getBaseUri() {
445:                return null;
446:            }
447:
448:            public boolean isUnparsedEntity(String entityName) {
449:                // abandon the validation of ENTITY type.
450:                return true;
451:            }
452:
453:            public boolean isNotation(String notation) {
454:                // abandon the validation of NOTATION type.
455:                return true;
456:            }
457:
458:            public void onID(Datatype dt, StringToken s) {
459:                // ID/IDREF validation will be done by ourselves.
460:                // so we will not rely on the validator to perform this check.
461:                // because we will use multiple instances of validators, so 
462:                // they cannot check global consistency.
463:
464:                // see onID/onIDREF of the ValidationContext.
465:            }
466:
467:            public String resolveNamespacePrefix(String prefix) {
468:                return context.getNamespaceContext().getNamespaceURI(prefix);
469:            }
470:
471:        }
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