Source Code Cross Referenced for PageInfo.java in  » Sevlet-Container » tomcat-jasper2 » org » apache » jasper » compiler » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Sevlet Container » tomcat jasper2 » org.apache.jasper.compiler 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright 1999,2004 The Apache Software Foundation.
003:         * 
004:         * Licensed under the Apache License, Version 2.0 (the "License");
005:         * you may not use this file except in compliance with the License.
006:         * You may obtain a copy of the License at
007:         * 
008:         *      http://www.apache.org/licenses/LICENSE-2.0
009:         * 
010:         * Unless required by applicable law or agreed to in writing, software
011:         * distributed under the License is distributed on an "AS IS" BASIS,
012:         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013:         * See the License for the specific language governing permissions and
014:         * limitations under the License.
015:         */
016:        package org.apache.jasper.compiler;
017:
018:        import java.util.*;
019:
020:        import org.apache.jasper.Constants;
021:        import org.apache.jasper.JasperException;
022:        import javax.servlet.jsp.tagext.TagLibraryInfo;
023:
024:        /**
025:         * A repository for various info about the translation unit under compilation.
026:         *
027:         * @author Kin-man Chung
028:         */
029:
030:        class PageInfo {
031:
032:            private Vector imports;
033:            private Vector dependants;
034:
035:            private BeanRepository beanRepository;
036:            private HashMap taglibsMap;
037:            private HashMap jspPrefixMapper;
038:            private HashMap xmlPrefixMapper;
039:            private HashMap nonCustomTagPrefixMap;
040:            private String defaultLanguage = "java";
041:            private String language;
042:            private String defaultExtends = Constants.JSP_SERVLET_BASE;
043:            private String xtends;
044:            private String contentType = null;
045:            private String session;
046:            private boolean isSession = true;
047:            private String bufferValue;
048:            private int buffer = 8 * 1024; // XXX confirm
049:            private String autoFlush;
050:            private boolean isAutoFlush = true;
051:            private String isThreadSafeValue;
052:            private boolean isThreadSafe = true;
053:            private String isErrorPageValue;
054:            private boolean isErrorPage = false;
055:            private String errorPage = null;
056:            private String info;
057:
058:            private int maxTagNesting = 0;
059:            private boolean scriptless = false;
060:            private boolean scriptingInvalid = false;
061:            private String isELIgnoredValue;
062:            private boolean isELIgnored = false;
063:            private String omitXmlDecl = null;
064:            private String doctypeName = null;
065:            private String doctypePublic = null;
066:            private String doctypeSystem = null;
067:
068:            private boolean isJspPrefixHijacked;
069:
070:            // Set of all element and attribute prefixes used in this translation unit
071:            private HashSet prefixes;
072:
073:            private boolean hasJspRoot = false;
074:            private Vector includePrelude;
075:            private Vector includeCoda;
076:            private Vector pluginDcls; // Id's for tagplugin declarations
077:
078:            PageInfo(BeanRepository beanRepository) {
079:                this .beanRepository = beanRepository;
080:                this .taglibsMap = new HashMap();
081:                this .jspPrefixMapper = new HashMap();
082:                this .xmlPrefixMapper = new HashMap();
083:                this .nonCustomTagPrefixMap = new HashMap();
084:                this .imports = new Vector();
085:                this .dependants = new Vector();
086:                this .includePrelude = new Vector();
087:                this .includeCoda = new Vector();
088:                this .pluginDcls = new Vector();
089:                this .prefixes = new HashSet();
090:
091:                // Enter standard imports
092:                for (int i = 0; i < Constants.STANDARD_IMPORTS.length; i++)
093:                    imports.add(Constants.STANDARD_IMPORTS[i]);
094:            }
095:
096:            /**
097:             * Check if the plugin ID has been previously declared.  Make a not
098:             * that this Id is now declared.
099:             * @return true if Id has been declared.
100:             */
101:            public boolean isPluginDeclared(String id) {
102:                if (pluginDcls.contains(id))
103:                    return true;
104:                pluginDcls.add(id);
105:                return false;
106:            }
107:
108:            public void addImports(List imports) {
109:                this .imports.addAll(imports);
110:            }
111:
112:            public void addImport(String imp) {
113:                this .imports.add(imp);
114:            }
115:
116:            public List getImports() {
117:                return imports;
118:            }
119:
120:            public void addDependant(String d) {
121:                if (!dependants.contains(d))
122:                    dependants.add(d);
123:            }
124:
125:            public List getDependants() {
126:                return dependants;
127:            }
128:
129:            public BeanRepository getBeanRepository() {
130:                return beanRepository;
131:            }
132:
133:            public int getMaxTagNesting() {
134:                return maxTagNesting;
135:            }
136:
137:            public void setMaxTagNesting(int maxTagNesting) {
138:                this .maxTagNesting = maxTagNesting;
139:            }
140:
141:            public void setScriptless(boolean s) {
142:                scriptless = s;
143:            }
144:
145:            public boolean isScriptless() {
146:                return scriptless;
147:            }
148:
149:            public void setScriptingInvalid(boolean s) {
150:                scriptingInvalid = s;
151:            }
152:
153:            public boolean isScriptingInvalid() {
154:                return scriptingInvalid;
155:            }
156:
157:            public List getIncludePrelude() {
158:                return includePrelude;
159:            }
160:
161:            public void setIncludePrelude(Vector prelude) {
162:                includePrelude = prelude;
163:            }
164:
165:            public List getIncludeCoda() {
166:                return includeCoda;
167:            }
168:
169:            public void setIncludeCoda(Vector coda) {
170:                includeCoda = coda;
171:            }
172:
173:            public void setHasJspRoot(boolean s) {
174:                hasJspRoot = s;
175:            }
176:
177:            public boolean hasJspRoot() {
178:                return hasJspRoot;
179:            }
180:
181:            public String getOmitXmlDecl() {
182:                return omitXmlDecl;
183:            }
184:
185:            public void setOmitXmlDecl(String omit) {
186:                omitXmlDecl = omit;
187:            }
188:
189:            public String getDoctypeName() {
190:                return doctypeName;
191:            }
192:
193:            public void setDoctypeName(String doctypeName) {
194:                this .doctypeName = doctypeName;
195:            }
196:
197:            public String getDoctypeSystem() {
198:                return doctypeSystem;
199:            }
200:
201:            public void setDoctypeSystem(String doctypeSystem) {
202:                this .doctypeSystem = doctypeSystem;
203:            }
204:
205:            public String getDoctypePublic() {
206:                return doctypePublic;
207:            }
208:
209:            public void setDoctypePublic(String doctypePublic) {
210:                this .doctypePublic = doctypePublic;
211:            }
212:
213:            /* Tag library and XML namespace management methods */
214:
215:            public void setIsJspPrefixHijacked(boolean isHijacked) {
216:                isJspPrefixHijacked = isHijacked;
217:            }
218:
219:            public boolean isJspPrefixHijacked() {
220:                return isJspPrefixHijacked;
221:            }
222:
223:            /*
224:             * Adds the given prefix to the set of prefixes of this translation unit.
225:             * 
226:             * @param prefix The prefix to add
227:             */
228:            public void addPrefix(String prefix) {
229:                prefixes.add(prefix);
230:            }
231:
232:            /*
233:             * Checks to see if this translation unit contains the given prefix.
234:             *
235:             * @param prefix The prefix to check
236:             *
237:             * @return true if this translation unit contains the given prefix, false
238:             * otherwise
239:             */
240:            public boolean containsPrefix(String prefix) {
241:                return prefixes.contains(prefix);
242:            }
243:
244:            /*
245:             * Maps the given URI to the given tag library.
246:             *
247:             * @param uri The URI to map
248:             * @param info The tag library to be associated with the given URI
249:             */
250:            public void addTaglib(String uri, TagLibraryInfo info) {
251:                taglibsMap.put(uri, info);
252:            }
253:
254:            /*
255:             * Gets the tag library corresponding to the given URI.
256:             *
257:             * @return Tag library corresponding to the given URI
258:             */
259:            public TagLibraryInfo getTaglib(String uri) {
260:                return (TagLibraryInfo) taglibsMap.get(uri);
261:            }
262:
263:            /*
264:             * Gets the collection of tag libraries that are associated with a URI
265:             *
266:             * @return Collection of tag libraries that are associated with a URI
267:             */
268:            public Collection getTaglibs() {
269:                return taglibsMap.values();
270:            }
271:
272:            /*
273:             * Checks to see if the given URI is mapped to a tag library.
274:             *
275:             * @param uri The URI to map
276:             *
277:             * @return true if the given URI is mapped to a tag library, false
278:             * otherwise
279:             */
280:            public boolean hasTaglib(String uri) {
281:                return taglibsMap.containsKey(uri);
282:            }
283:
284:            /*
285:             * Maps the given prefix to the given URI.
286:             *
287:             * @param prefix The prefix to map
288:             * @param uri The URI to be associated with the given prefix
289:             */
290:            public void addPrefixMapping(String prefix, String uri) {
291:                jspPrefixMapper.put(prefix, uri);
292:            }
293:
294:            /*
295:             * Pushes the given URI onto the stack of URIs to which the given prefix
296:             * is mapped.
297:             *
298:             * @param prefix The prefix whose stack of URIs is to be pushed
299:             * @param uri The URI to be pushed onto the stack
300:             */
301:            public void pushPrefixMapping(String prefix, String uri) {
302:                LinkedList stack = (LinkedList) xmlPrefixMapper.get(prefix);
303:                if (stack == null) {
304:                    stack = new LinkedList();
305:                    xmlPrefixMapper.put(prefix, stack);
306:                }
307:                stack.addFirst(uri);
308:            }
309:
310:            /*
311:             * Removes the URI at the top of the stack of URIs to which the given 
312:             * prefix is mapped. 
313:             *
314:             * @param prefix The prefix whose stack of URIs is to be popped
315:             */
316:            public void popPrefixMapping(String prefix) {
317:                LinkedList stack = (LinkedList) xmlPrefixMapper.get(prefix);
318:                if (stack == null || stack.size() == 0) {
319:                    // XXX throw new Exception("XXX");
320:                }
321:                stack.removeFirst();
322:            }
323:
324:            /*
325:             * Returns the URI to which the given prefix maps.
326:             *
327:             * @param prefix The prefix whose URI is sought
328:             *
329:             * @return The URI to which the given prefix maps
330:             */
331:            public String getURI(String prefix) {
332:
333:                String uri = null;
334:
335:                LinkedList stack = (LinkedList) xmlPrefixMapper.get(prefix);
336:                if (stack == null || stack.size() == 0) {
337:                    uri = (String) jspPrefixMapper.get(prefix);
338:                } else {
339:                    uri = (String) stack.getFirst();
340:                }
341:
342:                return uri;
343:            }
344:
345:            /* Page/Tag directive attributes */
346:
347:            /*
348:             * language
349:             */
350:            public void setLanguage(String value, Node n, ErrorDispatcher err,
351:                    boolean pagedir) throws JasperException {
352:
353:                if (!"java".equalsIgnoreCase(value)) {
354:                    if (pagedir)
355:                        err.jspError(n, "jsp.error.page.language.nonjava");
356:                    else
357:                        err.jspError(n, "jsp.error.tag.language.nonjava");
358:                }
359:
360:                language = value;
361:            }
362:
363:            public String getLanguage(boolean useDefault) {
364:                return (language == null && useDefault ? defaultLanguage
365:                        : language);
366:            }
367:
368:            public String getLanguage() {
369:                return getLanguage(true);
370:            }
371:
372:            /*
373:             * extends
374:             */
375:            public void setExtends(String value, Node.PageDirective n) {
376:
377:                xtends = value;
378:
379:                /*
380:                 * If page superclass is top level class (i.e. not in a package)
381:                 * explicitly import it. If this is not done, the compiler will assume
382:                 * the extended class is in the same pkg as the generated servlet.
383:                 */
384:                if (value.indexOf('.') < 0)
385:                    n.addImport(value);
386:            }
387:
388:            /**
389:             * Gets the value of the 'extends' page directive attribute.
390:             *
391:             * @param useDefault TRUE if the default
392:             * (org.apache.jasper.runtime.HttpJspBase) should be returned if this
393:             * attribute has not been set, FALSE otherwise
394:             *
395:             * @return The value of the 'extends' page directive attribute, or the
396:             * default (org.apache.jasper.runtime.HttpJspBase) if this attribute has
397:             * not been set and useDefault is TRUE
398:             */
399:            public String getExtends(boolean useDefault) {
400:                return (xtends == null && useDefault ? defaultExtends : xtends);
401:            }
402:
403:            /**
404:             * Gets the value of the 'extends' page directive attribute.
405:             *
406:             * @return The value of the 'extends' page directive attribute, or the
407:             * default (org.apache.jasper.runtime.HttpJspBase) if this attribute has
408:             * not been set
409:             */
410:            public String getExtends() {
411:                return getExtends(true);
412:            }
413:
414:            /*
415:             * contentType
416:             */
417:            public void setContentType(String value) {
418:                contentType = value;
419:            }
420:
421:            public String getContentType() {
422:                return contentType;
423:            }
424:
425:            /*
426:             * buffer
427:             */
428:            public void setBufferValue(String value, Node n, ErrorDispatcher err)
429:                    throws JasperException {
430:
431:                if ("none".equalsIgnoreCase(value))
432:                    buffer = 0;
433:                else {
434:                    if (value == null || !value.endsWith("kb"))
435:                        err.jspError(n, "jsp.error.page.invalid.buffer");
436:                    try {
437:                        Integer k = new Integer(value.substring(0, value
438:                                .length() - 2));
439:                        buffer = k.intValue() * 1024;
440:                    } catch (NumberFormatException e) {
441:                        err.jspError(n, "jsp.error.page.invalid.buffer");
442:                    }
443:                }
444:
445:                bufferValue = value;
446:            }
447:
448:            public String getBufferValue() {
449:                return bufferValue;
450:            }
451:
452:            public int getBuffer() {
453:                return buffer;
454:            }
455:
456:            /*
457:             * session
458:             */
459:            public void setSession(String value, Node n, ErrorDispatcher err)
460:                    throws JasperException {
461:
462:                if ("true".equalsIgnoreCase(value))
463:                    isSession = true;
464:                else if ("false".equalsIgnoreCase(value))
465:                    isSession = false;
466:                else
467:                    err.jspError(n, "jsp.error.page.invalid.session");
468:
469:                session = value;
470:            }
471:
472:            public String getSession() {
473:                return session;
474:            }
475:
476:            public boolean isSession() {
477:                return isSession;
478:            }
479:
480:            /*
481:             * autoFlush
482:             */
483:            public void setAutoFlush(String value, Node n, ErrorDispatcher err)
484:                    throws JasperException {
485:
486:                if ("true".equalsIgnoreCase(value))
487:                    isAutoFlush = true;
488:                else if ("false".equalsIgnoreCase(value))
489:                    isAutoFlush = false;
490:                else
491:                    err.jspError(n, "jsp.error.autoFlush.invalid");
492:
493:                autoFlush = value;
494:            }
495:
496:            public String getAutoFlush() {
497:                return autoFlush;
498:            }
499:
500:            public boolean isAutoFlush() {
501:                return isAutoFlush;
502:            }
503:
504:            /*
505:             * isThreadSafe
506:             */
507:            public void setIsThreadSafe(String value, Node n,
508:                    ErrorDispatcher err) throws JasperException {
509:
510:                if ("true".equalsIgnoreCase(value))
511:                    isThreadSafe = true;
512:                else if ("false".equalsIgnoreCase(value))
513:                    isThreadSafe = false;
514:                else
515:                    err.jspError(n, "jsp.error.page.invalid.isthreadsafe");
516:
517:                isThreadSafeValue = value;
518:            }
519:
520:            public String getIsThreadSafe() {
521:                return isThreadSafeValue;
522:            }
523:
524:            public boolean isThreadSafe() {
525:                return isThreadSafe;
526:            }
527:
528:            /*
529:             * info
530:             */
531:            public void setInfo(String value) {
532:                info = value;
533:            }
534:
535:            public String getInfo() {
536:                return info;
537:            }
538:
539:            /*
540:             * errorPage
541:             */
542:            public void setErrorPage(String value) {
543:                errorPage = value;
544:            }
545:
546:            public String getErrorPage() {
547:                return errorPage;
548:            }
549:
550:            /*
551:             * isErrorPage
552:             */
553:            public void setIsErrorPage(String value, Node n, ErrorDispatcher err)
554:                    throws JasperException {
555:
556:                if ("true".equalsIgnoreCase(value))
557:                    isErrorPage = true;
558:                else if ("false".equalsIgnoreCase(value))
559:                    isErrorPage = false;
560:                else
561:                    err.jspError(n, "jsp.error.page.invalid.iserrorpage");
562:
563:                isErrorPageValue = value;
564:            }
565:
566:            public String getIsErrorPage() {
567:                return isErrorPageValue;
568:            }
569:
570:            public boolean isErrorPage() {
571:                return isErrorPage;
572:            }
573:
574:            /*
575:             * isELIgnored
576:             */
577:            public void setIsELIgnored(String value, Node n,
578:                    ErrorDispatcher err, boolean pagedir)
579:                    throws JasperException {
580:
581:                if ("true".equalsIgnoreCase(value))
582:                    isELIgnored = true;
583:                else if ("false".equalsIgnoreCase(value))
584:                    isELIgnored = false;
585:                else {
586:                    if (pagedir)
587:                        err.jspError(n, "jsp.error.page.invalid.iselignored");
588:                    else
589:                        err.jspError(n, "jsp.error.tag.invalid.iselignored");
590:                }
591:
592:                isELIgnoredValue = value;
593:            }
594:
595:            public void setELIgnored(boolean s) {
596:                isELIgnored = s;
597:            }
598:
599:            public String getIsELIgnored() {
600:                return isELIgnoredValue;
601:            }
602:
603:            public boolean isELIgnored() {
604:                return isELIgnored;
605:            }
606:
607:            public void putNonCustomTagPrefix(String prefix, Mark where) {
608:                nonCustomTagPrefixMap.put(prefix, where);
609:            }
610:
611:            public Mark getNonCustomTagPrefix(String prefix) {
612:                return (Mark) nonCustomTagPrefixMap.get(prefix);
613:            }
614:        }
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