Source Code Cross Referenced for AuthoringHelper.java in  » ERP-CRM-Financial » sakai » org » sakaiproject » tool » assessment » qti » helper » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » ERP CRM Financial » sakai » org.sakaiproject.tool.assessment.qti.helper 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /**********************************************************************************
002:         * $URL: https://source.sakaiproject.org/svn/sam/trunk/component/src/java/org/sakaiproject/tool/assessment/qti/helper/AuthoringHelper.java $
003:         * $Id: AuthoringHelper.java 9274 2006-05-10 22:50:48Z daisyf@stanford.edu $
004:         ***********************************************************************************
005:         *
006:         * Copyright (c) 2003, 2004, 2005, 2006 The Sakai Foundation.
007:         *
008:         * Licensed under the Educational Community License, Version 1.0 (the"License");
009:         * you may not use this file except in compliance with the License.
010:         * You may obtain a copy of the License at
011:         *
012:         *      http://www.opensource.org/licenses/ecl1.php
013:         *
014:         * Unless required by applicable law or agreed to in writing, software
015:         * distributed under the License is distributed on an "AS IS" BASIS,
016:         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
017:         * See the License for the specific language governing permissions and
018:         * limitations under the License.
019:         *
020:         **********************************************************************************/package org.sakaiproject.tool.assessment.qti.helper;
021:
022:        import java.io.IOException;
023:        import java.io.InputStream;
024:        import java.util.ArrayList;
025:        import java.util.HashSet;
026:        import java.util.Iterator;
027:        import java.util.List;
028:        import java.util.Map;
029:        import java.util.Set;
030:        import java.util.StringTokenizer;
031:
032:        import javax.xml.parsers.DocumentBuilder;
033:        import javax.xml.parsers.DocumentBuilderFactory;
034:        import javax.xml.parsers.ParserConfigurationException;
035:        import javax.xml.transform.TransformerException;
036:
037:        import org.apache.commons.logging.Log;
038:        import org.apache.commons.logging.LogFactory;
039:        import org.sakaiproject.tool.assessment.data.dao.assessment.ItemMetaData;
040:        import org.sakaiproject.tool.assessment.data.dao.questionpool.QuestionPoolItemData;
041:        import org.sakaiproject.tool.assessment.data.ifc.assessment.AssessmentAccessControlIfc;
042:        import org.sakaiproject.tool.assessment.data.ifc.assessment.AssessmentFeedbackIfc;
043:        import org.sakaiproject.tool.assessment.data.ifc.assessment.AssessmentMetaDataIfc;
044:        import org.sakaiproject.tool.assessment.data.ifc.assessment.EvaluationModelIfc;
045:        import org.sakaiproject.tool.assessment.data.ifc.assessment.ItemDataIfc;
046:        import org.sakaiproject.tool.assessment.data.ifc.assessment.SectionDataIfc;
047:        import org.sakaiproject.tool.assessment.data.ifc.questionpool.QuestionPoolItemIfc;
048:        import org.sakaiproject.tool.assessment.data.ifc.shared.TypeIfc;
049:        import org.sakaiproject.tool.assessment.data.model.Tree;
050:        import org.sakaiproject.tool.assessment.facade.AgentFacade;
051:        import org.sakaiproject.tool.assessment.facade.AssessmentFacade;
052:        import org.sakaiproject.tool.assessment.facade.ItemFacade;
053:        import org.sakaiproject.tool.assessment.facade.QuestionPoolFacade;
054:        import org.sakaiproject.tool.assessment.facade.SectionFacade;
055:        import org.sakaiproject.tool.assessment.integration.helper.integrated.AgentHelperImpl;
056:        import org.sakaiproject.tool.assessment.qti.asi.Assessment;
057:        import org.sakaiproject.tool.assessment.qti.asi.Item;
058:        import org.sakaiproject.tool.assessment.qti.asi.Section;
059:        import org.sakaiproject.tool.assessment.qti.constants.QTIVersion;
060:        import org.sakaiproject.tool.assessment.qti.helper.assessment.AssessmentHelperIfc;
061:        import org.sakaiproject.tool.assessment.qti.helper.item.ItemHelperIfc;
062:        import org.sakaiproject.tool.assessment.qti.helper.section.SectionHelperIfc;
063:        import org.sakaiproject.tool.assessment.qti.util.XmlStringBuffer;
064:        import org.sakaiproject.tool.assessment.qti.util.XmlUtil;
065:        import org.sakaiproject.tool.assessment.services.ItemService;
066:        import org.sakaiproject.tool.assessment.services.QuestionPoolService;
067:        import org.sakaiproject.tool.assessment.services.assessment.AssessmentService;
068:        import org.w3c.dom.Document;
069:        import org.w3c.dom.Element;
070:        import org.w3c.dom.Node;
071:        import org.w3c.dom.NodeList;
072:        import org.xml.sax.SAXException;
073:
074:        /**
075:         * <p>Copyright: Copyright (c) 2004</p>
076:         * <p>Organization: Sakai Project</p>
077:         * @author Ed Smiley esmiley@stanford.edu
078:         * @author Shastri, Rashmi <rshastri@iupui.edu>
079:         * @version $Id: AuthoringHelper.java 9274 2006-05-10 22:50:48Z daisyf@stanford.edu $
080:         */
081:        public class AuthoringHelper {
082:            private static Log log = LogFactory.getLog(AuthoringHelper.class);
083:            //  private static final AuthoringXml ax = new AuthoringXml(QTIVersion.VERSION_1_2);
084:            private AuthoringXml ax;
085:
086:            private int qtiVersion;
087:
088:            private AuthoringHelper() {
089:
090:            }
091:
092:            /**
093:             * QTI versioned constructor
094:             * @param qtiVersion either QTIVersion.VERSION_1_2 or QTIVersion.VERSION_2_0;
095:             */
096:            public AuthoringHelper(int qtiVersion) {
097:                this .qtiVersion = qtiVersion;
098:                if (!QTIVersion.isValid(qtiVersion)) {
099:                    throw new IllegalArgumentException(
100:                            "Version Codes supported: QTIVersion.VERSION_1_2, QTIVersion.VERSION_2_0");
101:                }
102:                ax = new AuthoringXml(qtiVersion);
103:            }
104:
105:            /**
106:             * Get a published assessment in Document form.
107:             *
108:             * @param assessmentId the published assessment's Id
109:             * @return the Document with the published assessment data
110:             */
111:            public Document getAssessment(String assessmentId) {
112:
113:                InputStream is = ax.getTemplateInputStream(ax.ASSESSMENT);
114:
115:                return getAssessment(assessmentId, is);
116:            }
117:
118:            /**
119:             * Get an assessment in Document form.
120:             *
121:             * @param assessmentId the assessment's Id
122:             * @param is a stream containing the unpopulated XML document
123:             * @return the Document with the published assessment data
124:             */
125:            public Document getAssessment(String assessmentId, InputStream is) {
126:                try {
127:                    String authors;
128:                    String objectives;
129:                    String keywords;
130:                    String rubrics;
131:                    String bgColor;
132:                    String bgImage;
133:
134:                    AssessmentService assessmentService = new AssessmentService();
135:                    QTIHelperFactory factory = new QTIHelperFactory();
136:
137:                    AssessmentFacade assessment = assessmentService
138:                            .getAssessment(assessmentId);
139:                    // convert assessment to document
140:                    AssessmentHelperIfc assessmentHelper = factory
141:                            .getAssessmentHelperInstance(this .qtiVersion);
142:                    Assessment assessmentXml = assessmentHelper
143:                            .readXMLDocument(is);
144:                    assessmentXml.setIdent(assessmentId);
145:                    assessmentXml.setTitle(assessment.getTitle());
146:                    assessmentHelper.setDescriptiveText(assessment
147:                            .getDescription(), assessmentXml);
148:
149:                    authors = assessment
150:                            .getAssessmentMetaDataByLabel(AssessmentMetaDataIfc.AUTHORS);
151:                    objectives = assessment
152:                            .getAssessmentMetaDataByLabel(AssessmentMetaDataIfc.OBJECTIVES);
153:                    keywords = assessment
154:                            .getAssessmentMetaDataByLabel(AssessmentMetaDataIfc.KEYWORDS);
155:                    rubrics = assessment
156:                            .getAssessmentMetaDataByLabel(AssessmentMetaDataIfc.RUBRICS);
157:                    bgColor = assessment
158:                            .getAssessmentMetaDataByLabel(AssessmentMetaDataIfc.BGCOLOR);
159:                    bgImage = assessment
160:                            .getAssessmentMetaDataByLabel(AssessmentMetaDataIfc.BGIMAGE);
161:
162:                    if (authors != null) {
163:                        assessmentXml.setFieldentry("AUTHORS", authors);
164:                    } else {
165:                        AgentHelperImpl helper = new AgentHelperImpl();
166:                        String createdBy = assessment.getCreatedBy();
167:                        String eid = helper.getEidById(createdBy);
168:                        if (eid != null) {
169:                            assessmentXml.setFieldentry("AUTHORS", eid);
170:                        } else {
171:                            log.debug("\n\nNO AUTHORS");
172:                        }
173:                    }
174:
175:                    if (objectives != null) {
176:                        assessmentXml.setFieldentry("ASSESSMENT_OBJECTIVES",
177:                                objectives);
178:                    }
179:                    if (keywords != null) {
180:                        assessmentXml.setFieldentry("ASSESSMENT_KEYWORDS",
181:                                keywords);
182:                    }
183:                    if (rubrics != null) {
184:                        assessmentXml.setFieldentry("ASSESSMENT_RUBRICS",
185:                                rubrics);
186:                    }
187:                    if (bgColor != null) {
188:                        assessmentXml.setFieldentry("BGCOLOR", bgColor);
189:                    }
190:                    if (bgImage != null) {
191:                        assessmentXml.setFieldentry("BGIMG", bgImage);
192:                    }
193:
194:                    // fieldentry properties
195:                    EvaluationModelIfc evaluationModel = assessment
196:                            .getEvaluationModel();
197:                    if (evaluationModel != null) {
198:                        assessmentHelper.updateEvaluationModel(assessmentXml,
199:                                evaluationModel);
200:                    }
201:                    AssessmentFeedbackIfc assessmentFeedback = assessment
202:                            .getAssessmentFeedback();
203:                    if (assessmentFeedback != null) {
204:                        assessmentHelper.updateFeedbackModel(assessmentXml,
205:                                assessmentFeedback);
206:                    }
207:                    AssessmentAccessControlIfc assessmentAccessControl = assessment
208:                            .getAssessmentAccessControl();
209:                    if (assessmentAccessControl != null) {
210:                        assessmentHelper.updateAccessControl(assessmentXml,
211:                                assessmentAccessControl);
212:                    }
213:                    Set securedIPAddressSet = (Set) assessment
214:                            .getSecuredIPAddressSet();
215:                    if (securedIPAddressSet != null) {
216:                        assessmentHelper.updateIPAddressSet(assessmentXml,
217:                                securedIPAddressSet);
218:                    }
219:
220:                    Set attachmentSet = (Set) assessment
221:                            .getAssessmentAttachmentSet();
222:
223:                    if (attachmentSet != null && attachmentSet.size() != 0) {
224:                        assessmentHelper.updateAttachmentSet(assessmentXml,
225:                                attachmentSet);
226:                    }
227:
228:                    assessmentHelper.updateMetaData(assessmentXml, assessment);
229:
230:                    // sections
231:                    factory = new QTIHelperFactory();
232:                    SectionHelperIfc sectionHelper = factory
233:                            .getSectionHelperInstance(this .qtiVersion);
234:                    List sectionList = assessment.getSectionArraySorted();
235:                    for (int i = 0; i < sectionList.size(); i++) {
236:                        SectionDataIfc section = (SectionDataIfc) sectionList
237:                                .get(i);
238:                        InputStream sis = ax.getTemplateInputStream(ax.SECTION);
239:                        Section sectionXml = sectionHelper.readXMLDocument(sis);
240:                        sectionXml.update(section);
241:                        addSection(assessmentXml, sectionXml);
242:                    }
243:
244:                    return assessmentXml.getDocument();
245:                } catch (Exception e) {
246:                    log.error(e.getMessage(), e);
247:                }
248:                return null;
249:            }
250:
251:            /**
252:             * Get an object bank of items in Document form.
253:             *
254:             * @param itemIds array of the the item ids
255:             * @return the Document with the item bank data
256:             */
257:            public Document getItemBank(String[] itemIds) {
258:                Document objectBank = XmlUtil.createDocument();
259:
260:                Element root = objectBank.createElement("questestinterop");
261:                Element ob = objectBank.createElement("objectbank");
262:                String objectBankIdent = "object" + Math.random();
263:                ob.setAttribute("ident", objectBankIdent);
264:                for (int i = 0; i < itemIds.length; i++) {
265:                    Document itemDoc = getItem(itemIds[i]);
266:                    Element itemElement = itemDoc.getDocumentElement();
267:                    Node itemImport = objectBank.importNode(itemElement, true);
268:                    ob.appendChild(itemImport);
269:                }
270:                root.appendChild(ob);
271:                objectBank.appendChild(root);
272:
273:                return objectBank;
274:            }
275:
276:            /**
277:             * Get an object bank of asessments (asi) in Document form.
278:             *
279:             * @param assessmentIds array of the the assessment ids
280:             * @return the Document with the item bank data
281:             */
282:            public Document getAssessmentBank(String[] assessmentIds) {
283:                Document objectBank = XmlUtil.createDocument();
284:
285:                Element root = objectBank.createElement("questestinterop");
286:                Element ob = objectBank.createElement("objectbank");
287:                String objectBankIdent = "object" + Math.random();
288:                ob.setAttribute("ident", objectBankIdent);
289:                for (int i = 0; i < assessmentIds.length; i++) {
290:                    Document itemDoc = getAssessment(assessmentIds[i]);
291:                    Element itemElement = itemDoc.getDocumentElement();
292:                    Node itemImport = objectBank.importNode(itemElement, true);
293:                    ob.appendChild(itemImport);
294:                }
295:                root.appendChild(ob);
296:                objectBank.appendChild(root);
297:
298:                return objectBank;
299:            }
300:
301:            /**
302:             * Get an item in Document form.
303:             * @param itemId the item id
304:             * @return the Document with the item data
305:             */
306:            public Document getItem(String itemId) {
307:                Item itemXml = new Item(this .qtiVersion);
308:                try {
309:                    ItemService itemService = new ItemService();
310:                    QTIHelperFactory factory = new QTIHelperFactory();
311:                    ItemHelperIfc itemHelper = factory
312:                            .getItemHelperInstance(this .qtiVersion);
313:                    ItemDataIfc item = itemService.getItem(itemId);
314:                    //TypeIfc type = item.getType();
315:                    Long type = item.getTypeId();
316:
317:                    if ((TypeIfc.MULTIPLE_CHOICE_SURVEY).equals(type))
318:
319:                    {
320:                        String scale = item
321:                                .getItemMetaDataByLabel(ItemMetaData.SCALENAME);
322:                        itemXml = itemHelper.readTypeSurveyItem(scale);
323:                    } else {
324:                        itemXml = itemHelper.readTypeXMLItem(type);
325:                    }
326:                    itemXml.setIdent(item.getItemIdString());
327:                    itemXml.update(item);
328:                    return itemXml.getDocument();
329:
330:                } catch (Exception ex) {
331:                    log.error(ex);
332:                    return null;
333:                }
334:            }
335:
336:            /**
337:             *
338:             * @param assessmentXml
339:             * @param sectionXml
340:             * @throws IOException
341:             * @throws SAXException
342:             * @throws ParserConfigurationException
343:             */
344:            private void addSection(Assessment assessmentXml, Section sectionXml)
345:                    throws IOException, SAXException,
346:                    ParserConfigurationException {
347:                ax.addElement(assessmentXml.getDocument(),
348:                        "questestinterop/assessment", sectionXml.getDocument()
349:                                .getDocumentElement());
350:            }
351:
352:            /**
353:             * Get an InputStream to an unpopulated section XML from file system.
354:             * @return InputStream to an unpopulated section XML
355:             */
356:            public InputStream getBlankSectionTemplateFileStream() {
357:                InputStream is = ax.getTemplateInputStream(ax.SECTION);
358:                return is;
359:            }
360:
361:            /**
362:             * Pull apart object bank into multiple assessments
363:             * @param objectBank
364:             * @return an array of AssesmentFacades
365:             */
366:            public AssessmentFacade[] createMultipleImportedAssessments(
367:                    Document objectBank) {
368:                Document[] docs = getDocumentsFromObjectBankDoc(objectBank,
369:                        "assessment");
370:                return createMultipleImportedAssessments(docs);
371:            }
372:
373:            /**
374:             * Pull apart object bank based on elementName
375:             * @param objectBank
376:             * @param elementName e.g. "assessment", "item", etc.
377:             * @return
378:             */
379:            private Document[] getDocumentsFromObjectBankDoc(
380:                    Document objectBank, String elementName) {
381:                Document[] documents = null;
382:                // Get the matching elements
383:                NodeList nodeList = objectBank.getElementsByTagName("//"
384:                        + elementName);
385:
386:                int numDocs = nodeList.getLength();
387:                if (numDocs == 0) {
388:                    return null;
389:                }
390:
391:                documents = new Document[numDocs];
392:                for (int i = 0; i < numDocs; i++) {
393:                    Node node = (Node) nodeList.item(i);
394:                    Document objectDoc = XmlUtil.createDocument();
395:                    Node importNode = objectDoc.importNode(node, true);
396:                    objectDoc.appendChild(importNode);
397:                    documents[i] = objectDoc;
398:                }
399:
400:                return documents;
401:            }
402:
403:            /**
404:             * Import multiple assessment documents in QTI format, extract & persist.
405:             * @param objectBank
406:             * @return an array of AssesmentFacades
407:             */
408:            public AssessmentFacade[] createMultipleImportedAssessments(
409:                    Document[] documents) {
410:                AssessmentFacade[] assessments = new AssessmentFacade[documents.length];
411:                for (int i = 0; i < documents.length; i++) {
412:                    assessments[i] = createImportedAssessment(documents[i]);
413:                }
414:                return assessments;
415:            }
416:
417:            /**
418:             * Import an assessment XML document in QTI format, extract & persist the data.
419:             * @param document the assessment XML document in QTI format
420:             * @return a persisted assessment
421:             */
422:            public AssessmentFacade createImportedAssessment(Document document) {
423:                return createImportedAssessment(document, null);
424:            }
425:
426:            public AssessmentFacade createImportedAssessment(Document document,
427:                    String unzipLocation) {
428:                return createImportedAssessment(document, unzipLocation, null);
429:            }
430:
431:            /**
432:             * Import an assessment XML document in QTI format, extract & persist the data.
433:             * @param document the assessment XML document in QTI format
434:             * @return a persisted assessment
435:             */
436:            public AssessmentFacade createImportedAssessment(Document document,
437:                    String unzipLocation, String templateId) {
438:                AssessmentFacade assessment = null;
439:
440:                AssessmentService assessmentService = new AssessmentService();
441:                try {
442:                    // we need to know who we are
443:                    String me = AgentFacade.getAgentString();
444:
445:                    // create the assessment
446:                    ExtractionHelper exHelper = new ExtractionHelper(
447:                            this .qtiVersion);
448:                    exHelper.setUnzipLocation(unzipLocation);
449:                    ItemService itemService = new ItemService();
450:                    Assessment assessmentXml = new Assessment(document);
451:                    Map assessmentMap = exHelper.mapAssessment(assessmentXml);
452:                    String description = (String) assessmentMap
453:                            .get("description");
454:                    String title = (String) assessmentMap.get("title");
455:                    assessment = assessmentService
456:                            .createAssessmentWithoutDefaultSection(title,
457:                                    exHelper.makeFCKAttachment(description),
458:                                    null, templateId);
459:
460:                    // now make sure we have a unique name for the assessment
461:                    String baseId = assessment.getAssessmentBaseId().toString();
462:                    boolean notUnique = !assessmentService
463:                            .assessmentTitleIsUnique(baseId, title, false);
464:
465:                    if (notUnique) {
466:                        synchronized (title) {
467:                            log
468:                                    .debug("Assessment " + title
469:                                            + " is not unique.");
470:                            int count = 0; // alternate exit condition
471:
472:                            while (notUnique) {
473:                                title = exHelper.renameDuplicate(title);
474:                                log.debug("renameDuplicate(title): " + title);
475:                                assessment.setTitle(title);
476:                                notUnique = !assessmentService
477:                                        .assessmentTitleIsUnique(baseId, title,
478:                                                false);
479:                                if (count++ > 99)
480:                                    break;// exit condition in case bug is introduced
481:                            }
482:                        }
483:                    }
484:
485:                    // update the remaining assessment properties
486:                    exHelper.updateAssessment(assessment, assessmentMap);
487:
488:                    // make sure required fields are set
489:                    assessment.setCreatedBy(me);
490:                    assessment.setCreatedDate(assessment.getCreatedDate());
491:                    assessment.setLastModifiedBy(me);
492:                    assessment.setLastModifiedDate(assessment.getCreatedDate());
493:                    assessment.setTypeId(TypeIfc.QUIZ);
494:                    assessment.setStatus(new Integer(1));
495:
496:                    // process each section and each item within each section
497:                    List sectionList = exHelper
498:                            .getSectionXmlList(assessmentXml);
499:                    int sectionListSize = sectionList.size();
500:                    log.debug("sections=" + sectionListSize);
501:
502:                    for (int sec = 0; sec < sectionListSize; sec++) // for each section...
503:                    {
504:                        Section sectionXml = (Section) sectionList.get(sec);
505:                        Map sectionMap = exHelper.mapSection(sectionXml);
506:                        // create the assessment section
507:                        SectionFacade section = assessmentService.addSection(""
508:                                + assessment.getAssessmentId());
509:                        exHelper.updateSection(section, sectionMap);
510:                        // make sure we are the creator
511:                        section.setCreatedBy(me);
512:                        section.setCreatedDate(assessment.getCreatedDate());
513:                        section.setLastModifiedBy(me);
514:                        section
515:                                .setLastModifiedDate(assessment
516:                                        .getCreatedDate());
517:                        section.setTypeId(TypeIfc.DEFAULT_SECTION);
518:                        section.setStatus(new Integer(1));
519:                        section.setSequence(new Integer(sec + 1));
520:
521:                        List itemList = exHelper.getItemXmlList(sectionXml);
522:                        for (int itm = 0; itm < itemList.size(); itm++) // for each item
523:                        {
524:                            log.debug("items=" + itemList.size());
525:                            Item itemXml = (Item) itemList.get(itm);
526:                            Map itemMap = exHelper.mapItem(itemXml);
527:
528:                            // lydia debugging
529:                            if (itemMap != null && itemMap.keySet() != null) {
530:                                Iterator iter = itemMap.keySet().iterator();
531:
532:                                while (iter.hasNext()) {
533:
534:                                    String label = (String) iter.next();
535:                                    String value = "";
536:                                    if (itemMap.get(label) != null) {
537:                                        value = (String) itemMap.get(label)
538:                                                .toString();
539:                                        log.debug("get Label: " + label
540:                                                + ", Value: " + value);
541:                                    }
542:
543:                                }
544:                            }
545:                            // end lydia
546:
547:                            ItemFacade item = new ItemFacade();
548:                            exHelper.updateItem(item, itemMap);
549:                            // make sure required fields are set
550:                            item.setCreatedBy(me);
551:                            item.setCreatedDate(assessment.getCreatedDate());
552:                            item.setLastModifiedBy(me);
553:                            item.setLastModifiedDate(assessment
554:                                    .getCreatedDate());
555:                            item.setStatus(ItemDataIfc.ACTIVE_STATUS);
556:                            // assign the next sequence number
557:                            item.setSequence(new Integer(itm + 1));
558:                            // add item to section
559:                            item.setSection(section); // one to many
560:                            // update metadata with PARTID
561:                            item.addItemMetaData(ItemMetaData.PARTID, section
562:                                    .getSectionId().toString());
563:
564:                            // Item Attachment
565:                            exHelper.makeItemAttachmentSet(item);
566:
567:                            section.addItem(item); // many to one
568:                            itemService.saveItem(item);
569:                        } // ... end for each item
570:
571:                        // Section Attachment
572:                        exHelper.makeSectionAttachmentSet(section, sectionMap);
573:
574:                        assessmentService.saveOrUpdateSection(section);
575:                    } // ... end for each section
576:
577:                    // and add ip address restriction, if any
578:                    String allowIp = assessment
579:                            .getAssessmentMetaDataByLabel("ALLOW_IP");
580:                    //log.info("allowIp: " + allowIp);
581:
582:                    if (allowIp != null
583:                            && !allowIp.trim().equalsIgnoreCase("null")) {
584:                        //log.info("NOT NULL: " + allowIp);
585:                        exHelper.makeSecuredIPAddressSet(assessment, allowIp);
586:                    }
587:
588:                    // Assessment Attachment
589:                    exHelper.makeAssessmentAttachmentSet(assessment);
590:
591:                    assessmentService.saveAssessment(assessment);
592:                    return assessment;
593:                } catch (Exception e) {
594:                    log.error(e.getMessage(), e);
595:                    assessmentService.removeAssessment(assessment
596:                            .getAssessmentId().toString());
597:                    throw new RuntimeException(e);
598:                }
599:            }
600:
601:            /**
602:             * Import an assessment XML document in QTI format, extract & persist the data.
603:             * import process assumes assessment structure, not objectbank or itembank
604:             * @param document the assessment XML document in QTI format
605:             * @return a persisted assessment
606:             */
607:            public QuestionPoolFacade createImportedQuestionPool(
608:                    Document document) {
609:                QuestionPoolFacade questionpool = new QuestionPoolFacade();
610:                QuestionPoolService questionPoolService = new QuestionPoolService();
611:
612:                try {
613:                    // identify user to assign as question pool owner
614:                    String me = AgentFacade.getAgentString();
615:
616:                    // create the questionpool as an assessment
617:                    ExtractionHelper exHelper = new ExtractionHelper(
618:                            this .qtiVersion);
619:                    ItemService itemService = new ItemService();
620:                    Assessment assessmentXml = new Assessment(document);
621:                    Map assessmentMap = exHelper.mapAssessment(assessmentXml);
622:                    String title = (String) assessmentMap.get("title");
623:
624:                    // save questionpool with required info only at this point
625:                    questionpool.setOwnerId(me);
626:                    questionpool.setTitle(title);
627:                    questionpool.setLastModifiedById(me);
628:                    questionpool
629:                            .setAccessTypeId(QuestionPoolFacade.ACCESS_DENIED); // set as default
630:                    questionpool = questionPoolService.savePool(questionpool);
631:                    // update the remaining questionpool properties
632:                    exHelper.updateQuestionPool(questionpool, assessmentMap);
633:
634:                    // now make sure we have a unique name for the question pool
635:                    String baseId = questionpool.getQuestionPoolId().toString();
636:                    boolean isUnique = questionPoolService.poolIsUnique(baseId,
637:                            title, "0", me);
638:
639:                    // if the title is not unique, increment with a number per renameDuplicate()
640:                    if (!isUnique) {
641:                        synchronized (title) {
642:                            log.debug("Questionpool " + title
643:                                    + " is not unique.");
644:                            int count = 0; // alternate exit condition
645:
646:                            while (!isUnique) {
647:                                title = exHelper.renameDuplicate(title);
648:                                log.debug("renameDuplicate(title): " + title);
649:                                questionpool.setTitle(title);
650:                                //recheck to confirm that new title is not a dplicate too
651:                                isUnique = questionPoolService.poolIsUnique(
652:                                        baseId, title, "0", me);
653:                                if (count++ > 99)
654:                                    break;// exit condition in case bug is introduced
655:                            }
656:                        }
657:                    }
658:
659:                    // process each section and each item within assessment each section
660:                    List sectionList = exHelper
661:                            .getSectionXmlList(assessmentXml);
662:                    int sectionListSize = sectionList.size();
663:                    int sec = sectionListSize - 1;
664:                    log.debug("sections=" + sectionListSize);
665:
666:                    // initialize setQuestionPoolItems so items can be added
667:                    Set itemSet = new HashSet();
668:                    questionpool.setQuestionPoolItems(itemSet);
669:
670:                    // use case for single section
671:                    // most common for Respondus & BB migrations
672:                    if (sectionListSize == 1) {
673:                        Section sectionXml = (Section) sectionList.get(sec);
674:                        Map sectionMap = exHelper.mapSection(sectionXml);
675:                        // for single section, do not create subpool
676:
677:                        List itemList = exHelper.getItemXmlList(sectionXml);
678:                        for (int itm = 0; itm < itemList.size(); itm++) // for each item
679:                        {
680:                            log.debug("items=" + itemList.size());
681:                            Item itemXml = (Item) itemList.get(itm);
682:                            Map itemMap = exHelper.mapItem(itemXml);
683:
684:                            ItemFacade item = new ItemFacade();
685:                            exHelper.updateItem(item, itemMap);
686:                            // make sure required fields are set
687:                            item.setCreatedBy(me);
688:                            item.setCreatedDate(questionpool.getLastModified());
689:                            item.setLastModifiedBy(me);
690:                            item.setLastModifiedDate(questionpool
691:                                    .getLastModified());
692:                            item.setStatus(ItemDataIfc.ACTIVE_STATUS);
693:                            itemService.saveItem(item);
694:
695:                            QuestionPoolItemData questionPoolItem = new QuestionPoolItemData();
696:                            questionPoolItem.setQuestionPoolId(questionpool
697:                                    .getQuestionPoolId());
698:                            questionPoolItem.setItemId(item.getItemIdString());
699:                            questionpool
700:                                    .addQuestionPoolItem((QuestionPoolItemIfc) questionPoolItem);
701:
702:                        } // ... end for each item
703:
704:                    }
705:                    // need error message if more than one section, for now
706:
707:                    // update the questionpoool with all sections and items
708:                    questionPoolService.savePool(questionpool);
709:
710:                    return questionpool;
711:                } catch (Exception e) {
712:                    log.error(e.getMessage(), e);
713:                    Tree tree = null;
714:                    questionPoolService.deletePool(questionpool
715:                            .getQuestionPoolId(), AgentFacade.getAgentString(),
716:                            tree);
717:                    throw new RuntimeException(e);
718:                }
719:            }
720:
721:            /**
722:             * @deprecated
723:             * Import an item XML document in QTI format, extract & persist the data.
724:             * @param document the item XML document in QTI format
725:             * @return a persisted item
726:             */
727:            public ItemFacade createImportedItem(Document document) {
728:                ItemFacade item = new ItemFacade();
729:
730:                try {
731:                    // create the item
732:                    ExtractionHelper exHelper = new ExtractionHelper(
733:                            this .qtiVersion);
734:                    Item itemXml = new Item(document, QTIVersion.VERSION_1_2);
735:                    Map itemMap = exHelper.mapItem(itemXml);
736:                    exHelper.updateItem(item, itemMap);
737:                    ItemService itemService = new ItemService();
738:                    itemService.saveItem(item);
739:                } catch (Exception e) {
740:                    log.error(e.getMessage(), e);
741:                }
742:
743:                return item;
744:            }
745:
746:            /**
747:             * Create an XmlStringBuffer (base class for A,S,I XML classes)
748:             *
749:             * @param inputStream the input stram
750:             *
751:             * @return an XmlStringBuffer (this is the base class for A,S,I XML classes)
752:             */
753:            public XmlStringBuffer readXMLDocument(InputStream inputStream) {
754:                Document document = null;
755:                DocumentBuilderFactory builderFactory = DocumentBuilderFactory
756:                        .newInstance();
757:                //    builderFactory.setNamespaceAware(true);
758:                try {
759:                    DocumentBuilder documentBuilder = builderFactory
760:                            .newDocumentBuilder();
761:                    document = documentBuilder.parse(inputStream);
762:                } catch (ParserConfigurationException e) {
763:                    log.error(e.getMessage(), e);
764:                } catch (SAXException e) {
765:                    log.error(e.getMessage(), e);
766:                } catch (IOException e) {
767:                    log.error(e.getMessage(), e);
768:                }
769:
770:                return new XmlStringBuffer(document);
771:            }
772:
773:            /**
774:             * Helper method.
775:             * @param inputStr
776:             * @param delimiter
777:             * @return
778:             */
779:            public ArrayList changeDelimitedStringtoArray(String inputStr,
780:                    String delimiter) {
781:                ArrayList selectedList = new ArrayList();
782:                if (inputStr != null && inputStr.trim().length() > 0) {
783:                    StringTokenizer st = new StringTokenizer(inputStr,
784:                            delimiter);
785:                    if (st != null) {
786:
787:                        while (st.hasMoreTokens()) {
788:                            selectedList.add(st.nextToken());
789:                        }
790:                    } else {
791:                        selectedList.add(inputStr);
792:                    }
793:                }
794:                return selectedList;
795:            }
796:
797:            public int getQtiVersion() {
798:                return qtiVersion;
799:            }
800:
801:            public void setQtiVersion(int qtiVersion) {
802:                this.qtiVersion = qtiVersion;
803:            }
804:        }
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