OO-535: implements import of QTI 1.2 items

pom.xml

@@ -1528,7 +1528,7 @@
 		<dependency>
 			<groupId>commons-io</groupId>
 			<artifactId>commons-io</artifactId>
-			<version>1.4</version>
+			<version>2.4</version>
 		</dependency>
 		<dependency>
 			<groupId>org.mnode.ical4j</groupId>

src/main/java/org/olat/core/util/ZipUtil.java

@@ -30,6 +30,7 @@ import java.io.BufferedInputStream;
 import java.io.BufferedOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
+import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
@@ -45,6 +46,7 @@ import java.util.zip.ZipEntry;
 import java.util.zip.ZipInputStream;
 import java.util.zip.ZipOutputStream;
 
+import org.apache.commons.io.IOUtils;
 import org.olat.core.commons.modules.bc.meta.MetaInfo;
 import org.olat.core.commons.modules.bc.meta.MetaInfoHelper;
 import org.olat.core.commons.modules.bc.meta.tagged.MetaTagged;
@@ -125,6 +127,33 @@ public class ZipUtil {
 		return unzip(zipLeaf, targetDir, null, false);
 	}
 	
+	/**
+	 * Unzip a file in the target dir with the restricted version
+	 * @param zipFile
+	 * @param targetDir
+	 * @return
+	 */
+	public static boolean unzipStrict(File zipFile, VFSContainer targetDir) {
+		if (targetDir instanceof LocalFolderImpl) {
+			String outdir = ((LocalFolderImpl) targetDir).getBasefile().getAbsolutePath();
+			InputStream in = null;
+			try {
+				long s = System.currentTimeMillis();
+				in = new FileInputStream(zipFile);
+				xxunzip (in, outdir);
+				log.info("unzip file="+zipFile.getName()+" to="+outdir +" t="+Long.toString(System.currentTimeMillis()-s));
+				return true;
+			} catch (IOException e) {
+				log.error("I/O failure while unzipping "+zipFile.getName()+" to "+outdir);
+				return false;
+			} finally {
+				IOUtils.closeQuietly(in);
+			}
+		}
+		return false;
+	}
+	
+	
 	/**
 	 * Unzip a file to a directory using the versioning system of VFS
 	 * @param zipLeaf	The file to unzip

src/main/java/org/olat/ims/qti/QTI12PreviewController.java

@@ -19,27 +19,36 @@
  */
 package org.olat.ims.qti;
 
-import java.io.File;
-import java.io.FileInputStream;
 import java.io.InputStream;
 
+import javax.servlet.http.HttpServletRequest;
+
 import org.dom4j.Document;
 import org.dom4j.Element;
+import org.olat.core.CoreSpringFactory;
+import org.olat.core.dispatcher.mapper.Mapper;
 import org.olat.core.gui.UserRequest;
 import org.olat.core.gui.components.Component;
 import org.olat.core.gui.components.panel.Panel;
 import org.olat.core.gui.control.Event;
 import org.olat.core.gui.control.WindowControl;
 import org.olat.core.gui.control.controller.BasicController;
+import org.olat.core.gui.media.MediaResource;
+import org.olat.core.gui.media.NotFoundMediaResource;
 import org.olat.core.gui.translator.Translator;
 import org.olat.core.util.Util;
+import org.olat.core.util.vfs.VFSContainer;
+import org.olat.core.util.vfs.VFSItem;
+import org.olat.core.util.vfs.VFSLeaf;
+import org.olat.core.util.vfs.VFSMediaResource;
 import org.olat.core.util.xml.XMLParser;
 import org.olat.ims.qti.editor.ItemPreviewController;
 import org.olat.ims.qti.editor.QTIEditorPackage;
 import org.olat.ims.qti.editor.beecom.objects.Item;
 import org.olat.ims.qti.editor.beecom.parser.ParserManager;
 import org.olat.ims.resources.IMSEntityResolver;
-
+import org.olat.modules.qpool.QuestionItem;
+import org.olat.modules.qpool.QuestionPoolService;
 /**
  * 
  * Initial date: 21.02.2013<br>
@@ -50,30 +59,36 @@ public class QTI12PreviewController extends BasicController {
 	
 	private final Panel mainPanel;
 	private ItemPreviewController previewCtrl;
+	private final QuestionPoolService qpoolService;
 
-	public QTI12PreviewController(UserRequest ureq, WindowControl wControl) {
+	public QTI12PreviewController(UserRequest ureq, WindowControl wControl, QuestionItem qitem) {
 		super(ureq, wControl);
-		
+		qpoolService = CoreSpringFactory.getImpl(QuestionPoolService.class);
 		mainPanel = new Panel("qti12preview");
 		
-		Item item = readItemXml();
-		if(item != null) {
-			Translator translator = Util.createPackageTranslator(QTIEditorPackage.class, getLocale());
-			previewCtrl = new ItemPreviewController(wControl, item, "/Users/srosse", translator);
-			listenTo(previewCtrl);
-			mainPanel.setContent(previewCtrl.getInitialComponent());
+		VFSLeaf leaf = qpoolService.getRootFile(qitem);
+		if(leaf == null) {
+			//no data to preview
+		} else {
+			Item item = readItemXml(leaf);
+			if(item != null) {
+				Translator translator = Util.createPackageTranslator(QTIEditorPackage.class, getLocale());
+				VFSContainer directory = qpoolService.getRootDirectory(qitem);
+				String mapperUrl = registerMapper(ureq, new QItemDirectoryMapper(directory));
+				previewCtrl = new ItemPreviewController(wControl, item, mapperUrl, translator);
+				listenTo(previewCtrl);
+				mainPanel.setContent(previewCtrl.getInitialComponent());
+			}
 		}
 		
 		putInitialPanel(mainPanel);
 	}
 	
-	private Item readItemXml() {
-
-		XMLParser xmlParser = new XMLParser(new IMSEntityResolver());
+	private Item readItemXml(VFSLeaf leaf) {
 		Document doc = null;
 		try {
-			File itemXml = new File("/Users/srosse/Desktop/mchc_i_001.xml");
-			InputStream is = new FileInputStream(itemXml);
+			InputStream is = leaf.getInputStream();
+			XMLParser xmlParser = new XMLParser(new IMSEntityResolver());
 			doc = xmlParser.parse(is, false);
 			
 			Element item = (Element)doc.selectSingleNode("questestinterop/item");
@@ -81,7 +96,6 @@ public class QTI12PreviewController extends BasicController {
 		  Item qtiItem = (Item)parser.parse(item);
 
 			is.close();
-			
 			return qtiItem;
 		} catch (Exception e) {
 			logError("", e);
@@ -98,4 +112,23 @@ public class QTI12PreviewController extends BasicController {
 	protected void event(UserRequest ureq, Component source, Event event) {
 		//
 	}
+	
+	private class QItemDirectoryMapper implements Mapper {
+		private final VFSContainer itemBaseContainer;
+		
+		private QItemDirectoryMapper(VFSContainer container) {
+			itemBaseContainer = container;
+		}
+		
+		public MediaResource handle(String relPath, HttpServletRequest request) {
+			VFSItem vfsItem = itemBaseContainer.resolve(relPath);
+			MediaResource mr;
+			if (vfsItem == null || !(vfsItem instanceof VFSLeaf)) {
+				mr = new NotFoundMediaResource(relPath);
+			} else {
+				mr = new VFSMediaResource((VFSLeaf) vfsItem);
+			}
+			return mr;
+		}
+	}
 }

src/main/java/org/olat/ims/qti/QTIQuestionPoolServiceProvider.java

@@ -19,9 +19,13 @@
  */
 package org.olat.ims.qti;
 
+import java.io.File;
+
 import org.olat.core.gui.UserRequest;
 import org.olat.core.gui.control.Controller;
 import org.olat.core.gui.control.WindowControl;
+import org.olat.core.util.vfs.VFSLeaf;
+import org.olat.ims.qti.fileresource.ItemFileResourceValidator;
 import org.olat.modules.qpool.QuestionItem;
 import org.olat.modules.qpool.QuestionPoolSPI;
 
@@ -33,20 +37,34 @@ import org.olat.modules.qpool.QuestionPoolSPI;
  */
 public class QTIQuestionPoolServiceProvider implements QuestionPoolSPI {
 
+	@Override
+	public int getPriority() {
+		return 10;
+	}
+
 	@Override
 	public String getFormat() {
 		return QTIConstants.QTI_12_FORMAT;
 	}
 
+	@Override
+	public boolean isCompatible(String filename, File file) {
+		return new ItemFileResourceValidator().validate(filename, file);
+	}
+	@Override
+	public boolean isCompatible(String filename, VFSLeaf file) {
+		return new ItemFileResourceValidator().validate(filename, file);
+	}
+
 	@Override
 	public Controller getPreviewController(UserRequest ureq, WindowControl wControl, QuestionItem item) {
-		QTI12PreviewController previewCtrl = new QTI12PreviewController(ureq, wControl);
+		QTI12PreviewController previewCtrl = new QTI12PreviewController(ureq, wControl, item);
 		return previewCtrl;
 	}
 
 	@Override
 	public Controller getEditableController(UserRequest ureq, WindowControl wControl, QuestionItem item) {
-		QTI12PreviewController previewCtrl = new QTI12PreviewController(ureq, wControl);
+		QTI12PreviewController previewCtrl = new QTI12PreviewController(ureq, wControl, item);
 		return previewCtrl;
 	}
 }
\ No newline at end of file

src/main/java/org/olat/ims/qti/fileresource/ItemFileResourceValidator.java

+/**
+ * <a href="http://www.openolat.org">
+ * OpenOLAT - Online Learning and Training</a><br>
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License"); <br>
+ * you may not use this file except in compliance with the License.<br>
+ * You may obtain a copy of the License at the
+ * <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache homepage</a>
+ * <p>
+ * Unless required by applicable law or agreed to in writing,<br>
+ * software distributed under the License is distributed on an "AS IS" BASIS, <br>
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
+ * See the License for the specific language governing permissions and <br>
+ * limitations under the License.
+ * <p>
+ * Initial code contributed and copyrighted by<br>
+ * frentix GmbH, http://www.frentix.com
+ * <p>
+ */
+package org.olat.ims.qti.fileresource;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.InputStream;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipInputStream;
+
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.parsers.SAXParser;
+import javax.xml.parsers.SAXParserFactory;
+
+import org.apache.commons.io.IOUtils;
+import org.olat.core.logging.OLog;
+import org.olat.core.logging.Tracing;
+import org.olat.core.util.vfs.VFSLeaf;
+import org.olat.ims.resources.IMSEntityResolver;
+import org.olat.search.service.document.file.utils.ShieldInputStream;
+import org.xml.sax.Attributes;
+import org.xml.sax.ErrorHandler;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
+import org.xml.sax.SAXParseException;
+import org.xml.sax.XMLReader;
+import org.xml.sax.helpers.DefaultHandler;
+
+/**
+ * 
+ * Initial date: 27.02.2013<br>
+ * @author srosse, stephane.rosse@frentix.com, http://www.frentix.com
+ *
+ */
+public class ItemFileResourceValidator {
+	
+	private static final OLog log = Tracing.createLoggerFor(ItemFileResourceValidator.class);
+
+	public boolean validate(String filename, File file) {
+		InputStream in = null;
+		try {
+			in = new FileInputStream(file);
+			return validate(filename, in);
+		} catch (FileNotFoundException e) {
+			return false;
+		} finally {
+			IOUtils.closeQuietly(in);
+		}
+	}
+
+	public boolean validate(String filename, VFSLeaf file) {
+		InputStream in = null;
+		try {
+			in = file.getInputStream();
+			return validate(filename, in);
+		} catch (Exception e) {
+			return false;
+		} finally {
+			IOUtils.closeQuietly(in);
+		}
+	}
+
+	public boolean validate(String filename, InputStream in) {
+		boolean valid = false;
+
+		if(filename.toLowerCase().endsWith(".xml")) {
+			valid = validateXml(in);
+			IOUtils.closeQuietly(in);
+		} else if(filename.toLowerCase().endsWith(".zip")) {
+			ZipInputStream oZip = new ZipInputStream(in);
+			try {
+				ZipEntry oEntr = oZip.getNextEntry();
+				while (oEntr != null) {
+					if (!oEntr.isDirectory()) {
+						if(validateXml(new ShieldInputStream(oZip))) {
+							valid = true;
+						}
+					}
+					oZip.closeEntry();
+					oEntr = oZip.getNextEntry();
+				}
+			} catch(Exception e) {
+				log.error("", e);
+				valid = false;
+			} finally {
+				IOUtils.closeQuietly(oZip);
+				IOUtils.closeQuietly(in);
+			}
+		}
+		
+		return valid;
+	}
+	
+	private boolean validateXml(InputStream in) {
+		try {
+			SAXParserFactory factory = SAXParserFactory.newInstance();
+			factory.setValidating(true);
+			factory.setNamespaceAware(true);
+			
+			SimpleErrorHandler errorHandler = new SimpleErrorHandler();
+			ItemContentHandler contentHandler = new ItemContentHandler();
+			
+			SAXParser parser = factory.newSAXParser();
+			XMLReader reader = parser.getXMLReader();
+			reader.setEntityResolver(new IMSEntityResolver());
+			reader.setErrorHandler(errorHandler);
+			reader.setContentHandler(contentHandler);
+			reader.parse(new InputSource(in));
+			return errorHandler.isValid() && contentHandler.isItem();
+		} catch (ParserConfigurationException e) {
+			return false;
+		} catch (SAXException e) {
+			return false;
+		} catch (Exception e) {
+			return false;
+		}
+	}
+	
+	private static class SimpleErrorHandler implements ErrorHandler {
+		private int error = 0;
+		
+		public boolean isValid() {
+			return error == 0;
+		}
+
+		@Override
+		public void warning(SAXParseException exception) throws SAXException {
+			//
+		}
+
+		@Override
+		public void error(SAXParseException exception) throws SAXException {
+			error++;
+		}
+
+		@Override
+		public void fatalError(SAXParseException exception) throws SAXException {
+			error++;
+		}
+	}
+	
+	private static class ItemContentHandler extends DefaultHandler {
+		private boolean interop;
+		private boolean item;
+		
+		public boolean isItem() {
+			return item;
+		}
+
+		@Override
+		public void startElement(String uri, String localName, String qName, Attributes attributes)
+		throws SAXException {	
+			
+			if("questestinterop".equals(qName)) {
+				interop = true;
+			} else if("item".equals(localName)) {
+				if(interop) {
+					item = true;
+				}
+			}
+		}
+
+		@Override
+		public void endElement(String uri, String localName, String qName)
+		throws SAXException {
+			if("questestinterop".equals(qName)) {
+				interop = false;
+			}
+		}
+	}
+}

src/main/java/org/olat/ims/qti/repository/handlers/QTIHandler.java

@@ -154,7 +154,7 @@ public abstract class QTIHandler extends FileHandler implements RepositoryHandle
 	  File fUnzippedDir = FileResourceManager.getInstance().unzipFileResource(tempFr);
 	  File changeLogDir = new File(fUnzippedDir, "changelog");
 	  if(changeLogDir.exists()) {	  	
-	  	boolean changeLogDeleted = FileUtils.deleteDirsAndFiles(changeLogDir, true, true);	  	
+	  	FileUtils.deleteDirsAndFiles(changeLogDir, true, true);	  	
 	  }
 	  File targetZipFile = sourceFile;
 	  FileUtils.deleteDirsAndFiles(targetZipFile.getParentFile(), true, false);

src/main/java/org/olat/ims/resources/dtd/ims_qtiasiv1p2.dtd

+<?xml version='1.0' encoding='UTF-8' ?>
<!--Generated by XML Authority-->
<!--	*******************************************************		--><!--																--><!--	TITLE:		ims_qtiasiv1p2.dtd								--><!--	TYPE:		IMS Question and Test Interoperability			--><!--				Assessment, Section, Item structure	and			--><!--				Objects-bank.									--><!--																--><!--	REVISION HISTORY:											--><!--	Date	        Author										--><!--	====	        ======										--><!--	22nd Jan 2002	Colin Smythe								--><!--																--><!--	This specification has been approved as a PDS release.		--><!--																--><!--	+++++++++++++++++++++++++++++++++++++++++++++++++++++++		--><!--	*******************************************************		--><!--					ROOT DEFINITION								--><!--	*******************************************************		--><!ELEMENT questestinterop (qticomment? , (objectbank | assessment | (section | item)+))>
<!--	+++++++++++++++++++++++++++++++++++++++++++++++++++++++		--><!--	*******************************************************		--><!--					ENTITY DEFINITIONS							--><!--	*******************************************************		--><!ENTITY % I_Testoperator " testoperator  (EQ | NEQ | LT | LTE | GT | GTE )  #REQUIRED">
<!ENTITY % I_Pname " pname CDATA  #REQUIRED">
<!ENTITY % I_Class " class CDATA  'Block'">
<!ENTITY % I_Mdoperator " mdoperator  (EQ | NEQ | LT | LTE | GT | GTE )  #REQUIRED">
<!ENTITY % I_Mdname " mdname CDATA  #REQUIRED">
<!ENTITY % I_Title " title CDATA  #IMPLIED">
<!ENTITY % I_Label " label CDATA  #IMPLIED">
<!ENTITY % I_Ident " ident CDATA  #REQUIRED">
<!ENTITY % I_View " view  (All | 
          Administrator | 
          AdminAuthority | 
          Assessor | 
          Author | 
          Candidate | 
          InvigilatorProctor | 
          Psychometrician | 
          Scorer | 
          Tutor )  'All'">
<!ENTITY % I_FeedbackSwitch " feedbackswitch  (Yes | No )  'Yes'">
<!ENTITY % I_HintSwitch " hintswitch  (Yes | No )  'Yes'">
<!ENTITY % I_SolutionSwitch " solutionswitch  (Yes | No )  'Yes'">
<!ENTITY % I_Rcardinality " rcardinality  (Single | Multiple | Ordered )  'Single'">
<!ENTITY % I_Rtiming " rtiming  (Yes | No )  'No'">
<!ENTITY % I_Uri " uri CDATA  #IMPLIED">
<!ENTITY % I_X0 " x0 CDATA  #IMPLIED">
<!ENTITY % I_Y0 " y0 CDATA  #IMPLIED">
<!ENTITY % I_Height " height CDATA  #IMPLIED">
<!ENTITY % I_Width " width CDATA  #IMPLIED">
<!ENTITY % I_Embedded " embedded CDATA  'base64'">
<!ENTITY % I_LinkRefId " linkrefid CDATA  #REQUIRED">
<!ENTITY % I_VarName " varname CDATA  'SCORE'">
<!ENTITY % I_RespIdent " respident CDATA  #REQUIRED">
<!ENTITY % I_Continue " continue  (Yes | No )  'No'">
<!ENTITY % I_CharSet " charset CDATA  'ascii-us'">
<!ENTITY % I_ScoreModel " scoremodel CDATA  #IMPLIED">
<!ENTITY % I_MinNumber " minnumber CDATA  #IMPLIED">
<!ENTITY % I_MaxNumber " maxnumber CDATA  #IMPLIED">
<!ENTITY % I_FeedbackStyle " feedbackstyle  (Complete | Incremental | Multilevel | Proprietary )  'Complete'">
<!ENTITY % I_Case " case  (Yes | No )  'No'">
<!ENTITY % I_EntityRef " entityref ENTITY  #IMPLIED">
<!ENTITY % I_Index " index CDATA  #IMPLIED">
<!ELEMENT qmd_computerscored (#PCDATA)>
<!ELEMENT qmd_feedbackpermitted (#PCDATA)>
<!ELEMENT qmd_hintspermitted (#PCDATA)>
<!ELEMENT qmd_itemtype (#PCDATA)>
<!ELEMENT qmd_maximumscore (#PCDATA)>
<!ELEMENT qmd_renderingtype (#PCDATA)>
<!ELEMENT qmd_responsetype (#PCDATA)>
<!ELEMENT qmd_scoringpermitted (#PCDATA)>
<!ELEMENT qmd_solutionspermitted (#PCDATA)>
<!ELEMENT qmd_status (#PCDATA)>
<!ELEMENT qmd_timedependence (#PCDATA)>
<!ELEMENT qmd_timelimit (#PCDATA)>
<!ELEMENT qmd_toolvendor (#PCDATA)>
<!ELEMENT qmd_topic (#PCDATA)>
<!ELEMENT qmd_material (#PCDATA)>
<!ELEMENT qmd_typeofsolution (#PCDATA)>
<!ELEMENT qmd_levelofdifficulty (#PCDATA)>
<!ELEMENT qmd_weighting (#PCDATA)>
<!ELEMENT qtimetadata (vocabulary? , qtimetadatafield+)>
<!ELEMENT vocabulary (#PCDATA)>
<!ATTLIST vocabulary  %I_Uri;
                       %I_EntityRef;
                       vocab_type  CDATA  #IMPLIED ><!ELEMENT qtimetadatafield (fieldlabel , fieldentry)>
<!ATTLIST qtimetadatafield  xml:lang CDATA  #IMPLIED ><!ELEMENT fieldlabel (#PCDATA)>
<!ELEMENT fieldentry (#PCDATA)>
<!--	+++++++++++++++++++++++++++++++++++++++++++++++++++++++		--><!--	*******************************************************		--><!--				COMMON OBJECT DEFINITIONS						--><!--	*******************************************************		--><!ELEMENT qticomment (#PCDATA)>
<!ATTLIST qticomment  xml:lang CDATA    #IMPLIED><!ELEMENT material (qticomment? , (mattext | matemtext | matimage | mataudio | matvideo | matapplet | matapplication | matref | matbreak | mat_extension)+ , altmaterial*)>
<!ATTLIST material  %I_Label;
                     xml:lang CDATA  #IMPLIED ><!ELEMENT mattext (#PCDATA)>
<!ATTLIST mattext  texttype    CDATA  'text/plain'
                    %I_Label;
                    %I_CharSet;
                    %I_Uri;
                    xml:space    (preserve | default )  'default'
                    xml:lang    CDATA  #IMPLIED
                    %I_EntityRef;
                    %I_Width;
                    %I_Height;
                    %I_Y0;
                    %I_X0; ><!ELEMENT matemtext (#PCDATA)>
<!ATTLIST matemtext  texttype    CDATA  'text/plain'
                      %I_Label;
                      %I_CharSet;
                      %I_Uri;
                      xml:space    (preserve | default )  'default'
                      xml:lang    CDATA  #IMPLIED
                      %I_EntityRef;
                      %I_Width;
                      %I_Height;
                      %I_Y0;
                      %I_X0; ><!ELEMENT matimage (#PCDATA)>
<!ATTLIST matimage  imagtype    CDATA  'image/jpeg'
                     %I_Label;
                     %I_Height;
                     %I_Uri;
                     %I_Embedded;
                     %I_Width;
                     %I_Y0;
                     %I_X0;
                     %I_EntityRef; ><!ELEMENT mataudio (#PCDATA)>
<!ATTLIST mataudio  audiotype   CDATA  'audio/base'
                     %I_Label;
                     %I_Uri;
                     %I_Embedded;
                     %I_EntityRef; ><!ELEMENT matvideo (#PCDATA)>
<!ATTLIST matvideo  videotype   CDATA  'video/avi'
                     %I_Label;
                     %I_Uri;
                     %I_Width;
                     %I_Height;
                     %I_Y0;
                     %I_X0;
                     %I_Embedded;
                     %I_EntityRef; ><!ELEMENT matapplet (#PCDATA)>
<!ATTLIST matapplet  %I_Label;
                      %I_Uri;
                      %I_Y0;
                      %I_Height;
                      %I_Width;
                      %I_X0;
                      %I_Embedded;
                      %I_EntityRef; ><!ELEMENT matapplication (#PCDATA)>
<!ATTLIST matapplication  apptype     CDATA  #IMPLIED
                           %I_Label;
                           %I_Uri;
                           %I_Embedded;
                           %I_EntityRef; ><!ELEMENT matbreak EMPTY>
<!ELEMENT matref EMPTY>
<!ATTLIST matref  %I_LinkRefId; >
<!ELEMENT material_ref EMPTY>
<!ATTLIST material_ref  %I_LinkRefId; >
<!ELEMENT altmaterial (qticomment? , (mattext | matemtext | matimage | mataudio | matvideo | matapplet | matapplication | matref | matbreak | mat_extension)+)>
<!ATTLIST altmaterial  xml:lang CDATA  #IMPLIED ><!ELEMENT decvar (#PCDATA)>
<!ATTLIST decvar  %I_VarName;
                   vartype     (Integer | 
                                String | 
                                Decimal | 
                                Scientific | 
                                Boolean | 
                                Enumerated | 
                                Set )  'Integer'
                   defaultval CDATA  #IMPLIED
                   minvalue   CDATA  #IMPLIED
                   maxvalue   CDATA  #IMPLIED
                   members    CDATA  #IMPLIED
                   cutvalue   CDATA  #IMPLIED ><!ELEMENT setvar (#PCDATA)>
<!ATTLIST setvar  %I_VarName;
                   action     (Set | Add | Subtract | Multiply | Divide )  'Set' ><!ELEMENT interpretvar (material | material_ref)>
<!ATTLIST interpretvar  %I_View;
                         %I_VarName; ><!ELEMENT conditionvar (not | and | or | unanswered | other | varequal | varlt | varlte | vargt | vargte | varsubset | varinside | varsubstring | durequal | durlt | durlte | durgt | durgte | var_extension)+>
<!ELEMENT not (and | or | not | unanswered | other | varequal | varlt | varlte | vargt | vargte | varsubset | varinside | varsubstring | durequal | durlt | durlte | durgt | durgte)>
<!ELEMENT and (not | and | or | unanswered | other | varequal | varlt | varlte | vargt | vargte | varsubset | varinside | varsubstring | durequal | durlt | durlte | durgt | durgte)+>
<!ELEMENT or (not | and | or | unanswered | other | varequal | varlt | varlte | vargt | vargte | varsubset | varinside | varsubstring | durequal | durlt | durlte | durgt | durgte)+>
<!ELEMENT varequal (#PCDATA)>
<!ATTLIST varequal  %I_Case;
                     %I_RespIdent;
                     %I_Index; ><!ELEMENT varlt (#PCDATA)>
<!ATTLIST varlt  %I_RespIdent;
                  %I_Index; ><!ELEMENT varlte (#PCDATA)>
<!ATTLIST varlte  %I_RespIdent;
                   %I_Index; ><!ELEMENT vargt (#PCDATA)>
<!ATTLIST vargt  %I_RespIdent;
                  %I_Index; ><!ELEMENT vargte (#PCDATA)>
<!ATTLIST vargte  %I_RespIdent;
                   %I_Index; ><!ELEMENT varsubset (#PCDATA)>
<!ATTLIST varsubset  %I_RespIdent;
                      setmatch     (Exact | Partial )  'Exact'
                      %I_Index; ><!ELEMENT varinside (#PCDATA)>
<!ATTLIST varinside  areatype     (Ellipse | Rectangle | Bounded )  #REQUIRED
                      %I_RespIdent;
                      %I_Index; >
                      <!ELEMENT varsubstring (#PCDATA)>
<!ATTLIST varsubstring  %I_Index;
                         %I_RespIdent;
                         %I_Case; ><!ELEMENT durequal (#PCDATA)>
<!ATTLIST durequal  %I_Index;
                     %I_RespIdent; ><!ELEMENT durlt (#PCDATA)>
<!ATTLIST durlt  %I_Index;
                  %I_RespIdent; ><!ELEMENT durlte (#PCDATA)>
<!ATTLIST durlte  %I_Index;
                   %I_RespIdent; ><!ELEMENT durgt (#PCDATA)>
<!ATTLIST durgt  %I_Index;
                  %I_RespIdent; ><!ELEMENT durgte (#PCDATA)>
<!ATTLIST durgte  %I_Index;
                   %I_RespIdent; ><!ELEMENT unanswered (#PCDATA)>
<!ATTLIST unanswered  %I_RespIdent; ><!ELEMENT other (#PCDATA)>
<!ELEMENT duration (#PCDATA)>
<!ELEMENT displayfeedback (#PCDATA)>
<!ATTLIST displayfeedback  feedbacktype  (Response | Solution | Hint )  'Response'
                            %I_LinkRefId; ><!ELEMENT objectives (qticomment? , (material+ | flow_mat+))>
<!ATTLIST objectives  %I_View; ><!ELEMENT rubric (qticomment? , (material+ | flow_mat+))>
<!ATTLIST rubric  %I_View; ><!ELEMENT flow_mat (flow_mat | material | material_ref)+>
<!ATTLIST flow_mat  %I_Class; ><!ELEMENT presentation_material (qticomment? , flow_mat+)>
<!ELEMENT reference (qticomment | material | mattext | matemtext | matimage | mataudio | matvideo | matapplet | matapplication | matbreak | mat_extension)+>
<!ELEMENT selection_ordering (qticomment? , sequence_parameter? , selection* , order?)>
<!ATTLIST selection_ordering  sequence_type CDATA  #IMPLIED ><!ELEMENT outcomes_processing (qticomment? , outcomes , objects_condition* , processing_parameter* , map_output* , outcomes_feedback_test*)>
<!ATTLIST outcomes_processing  %I_ScoreModel; ><!--	+++++++++++++++++++++++++++++++++++++++++++++++++++++++		--><!--	*******************************************************		--><!--					EXTENSION DEFINITIONS						--><!--	*******************************************************		--><!ELEMENT mat_extension ANY>
<!ELEMENT var_extension ANY>
<!ELEMENT response_extension ANY>
<!ELEMENT render_extension ANY>
<!ELEMENT assessproc_extension ANY>
<!ELEMENT sectionproc_extension ANY>
<!ELEMENT itemproc_extension ANY>
<!ELEMENT respcond_extension ANY>
<!ELEMENT selection_extension ANY>
<!ELEMENT objectscond_extension (#PCDATA)>
<!ELEMENT order_extension ANY>
<!--	+++++++++++++++++++++++++++++++++++++++++++++++++++++++		--><!--	*******************************************************		--><!--				OBJECT-BANK OBJECT DEFINITIONS					--><!--	*******************************************************		-->
<!ELEMENT objectbank (qticomment? , qtimetadata* , (section | item)+)>
<!ATTLIST objectbank  %I_Ident; >
<!--	+++++++++++++++++++++++++++++++++++++++++++++++++++++++		--><!--	*******************************************************		--><!--				ASSESSMENT OBJECT DEFINITIONS					--><!--	*******************************************************		--><!ELEMENT assessment (qticomment? , duration? , qtimetadata* , objectives* , assessmentcontrol* , rubric* , presentation_material? , outcomes_processing* , assessproc_extension? , assessfeedback* , selection_ordering? , reference? , (sectionref | section)+)>
<!ATTLIST assessment  %I_Ident;
                       %I_Title;
                       xml:lang CDATA  #IMPLIED ><!ELEMENT assessmentcontrol (qticomment?)>
<!ATTLIST assessmentcontrol  %I_HintSwitch;
                              %I_SolutionSwitch;
                              %I_View;
                              %I_FeedbackSwitch; ><!ELEMENT assessfeedback (qticomment? , (material+ | flow_mat+))>
<!ATTLIST assessfeedback  %I_View;
                           %I_Ident;
                           %I_Title; ><!ELEMENT sectionref (#PCDATA)>
<!ATTLIST sectionref  %I_LinkRefId; ><!--	+++++++++++++++++++++++++++++++++++++++++++++++++++++++		--><!--	*******************************************************		--><!--				SECTION OBJECT DEFINITIONS						--><!--	*******************************************************		--><!ELEMENT section (qticomment? , duration? , qtimetadata* , objectives* , sectioncontrol* , sectionprecondition* , sectionpostcondition* , rubric* , presentation_material? , outcomes_processing* , sectionproc_extension? , sectionfeedback* , selection_ordering? , reference? , (itemref | item | sectionref | section)*)>
<!ATTLIST section  %I_Ident;
                    %I_Title;
                    xml:lang CDATA  #IMPLIED ><!ELEMENT sectionprecondition (#PCDATA)>
<!ELEMENT sectionpostcondition (#PCDATA)>
<!ELEMENT sectioncontrol (qticomment?)>
<!ATTLIST sectioncontrol  %I_FeedbackSwitch;
                           %I_HintSwitch;
                           %I_SolutionSwitch;
                           %I_View; ><!ELEMENT itemref (#PCDATA)>
<!ATTLIST itemref  %I_LinkRefId; ><!ELEMENT sectionfeedback (qticomment? , (material+ | flow_mat+))>
<!ATTLIST sectionfeedback  %I_View;
                            %I_Ident;
                            %I_Title; ><!--	+++++++++++++++++++++++++++++++++++++++++++++++++++++++		--><!--	*******************************************************		--><!--					ITEM OBJECT DEFINITIONS						--><!--	*******************************************************		--><!ELEMENT item (qticomment? , duration? , itemmetadata? , objectives* , itemcontrol* , itemprecondition* , itempostcondition* , (itemrubric | rubric)* , presentation? , resprocessing* , itemproc_extension? , itemfeedback* , reference?)>
<!ATTLIST item  maxattempts CDATA  #IMPLIED
                 %I_Label;
                 %I_Ident;
                 %I_Title;
                 xml:lang    CDATA  #IMPLIED ><!ELEMENT itemmetadata (qtimetadata* , qmd_computerscored? , qmd_feedbackpermitted? , qmd_hintspermitted? , qmd_itemtype? , qmd_levelofdifficulty? , qmd_maximumscore? , qmd_renderingtype* , qmd_responsetype* , qmd_scoringpermitted? , qmd_solutionspermitted? , qmd_status? , qmd_timedependence? , qmd_timelimit? , qmd_toolvendor? , qmd_topic? , qmd_weighting? , qmd_material* , qmd_typeofsolution?)>
<!ELEMENT itemcontrol (qticomment?)>
<!ATTLIST itemcontrol  %I_FeedbackSwitch;
                        %I_HintSwitch;
                        %I_SolutionSwitch;
                        %I_View; ><!ELEMENT itemprecondition (#PCDATA)>
<!ELEMENT itempostcondition (#PCDATA)>
<!ELEMENT itemrubric (material)>
<!ATTLIST itemrubric  %I_View; ><!ELEMENT presentation (qticomment? , (flow | (material | response_lid | response_xy | response_str | response_num | response_grp | response_extension)+))>
<!ATTLIST presentation  %I_Label;
                         xml:lang CDATA  #IMPLIED
                         %I_Y0;
                         %I_X0;
                         %I_Width;
                         %I_Height; ><!ELEMENT flow (flow | material | material_ref | response_lid | response_xy | response_str | response_num | response_grp | response_extension)+>
<!ATTLIST flow  %I_Class; ><!ELEMENT response_lid ((material | material_ref)? , (render_choice | render_hotspot | render_slider | render_fib | render_extension) , (material | material_ref)?)>
<!ATTLIST response_lid  %I_Rcardinality;
                         %I_Rtiming;
                         %I_Ident; ><!ELEMENT response_xy ((material | material_ref)? , (render_choice | render_hotspot | render_slider | render_fib | render_extension) , (material | material_ref)?)>
<!ATTLIST response_xy  %I_Rcardinality;
                        %I_Rtiming;
                        %I_Ident; ><!ELEMENT response_str ((material | material_ref)? , (render_choice | render_hotspot | render_slider | render_fib | render_extension) , (material | material_ref)?)>
<!ATTLIST response_str  %I_Rcardinality;
                         %I_Ident;
                         %I_Rtiming; ><!ELEMENT response_num ((material | material_ref)? , (render_choice | render_hotspot | render_slider | render_fib | render_extension) , (material | material_ref)?)>
<!ATTLIST response_num  numtype         (Integer | Decimal | Scientific )  'Integer'
                         %I_Rcardinality;
                         %I_Ident;
                         %I_Rtiming; ><!ELEMENT response_grp ((material | material_ref)? , (render_choice | render_hotspot | render_slider | render_fib | render_extension) , (material | material_ref)?)>
<!ATTLIST response_grp  %I_Rcardinality;
                         %I_Ident;
                         %I_Rtiming; ><!ELEMENT response_label (#PCDATA | qticomment | material | material_ref | flow_mat)*>
<!ATTLIST response_label  rshuffle     (Yes | No )  'Yes'
                           rarea        (Ellipse | Rectangle | Bounded )  'Ellipse'
                           rrange       (Exact | Range )  'Exact'
                           labelrefid  CDATA  #IMPLIED
                           %I_Ident;
                           match_group CDATA  #IMPLIED
                           match_max   CDATA  #IMPLIED ><!ELEMENT flow_label (flow_label | response_label)+>
<!ATTLIST flow_label  %I_Class; ><!ELEMENT response_na ANY>
<!ELEMENT render_choice ((material | material_ref | response_label | flow_label)* , response_na?)>
<!ATTLIST render_choice  shuffle      (Yes | No )  'No'
                          %I_MinNumber;
                          %I_MaxNumber; ><!ELEMENT render_hotspot ((material | material_ref | response_label | flow_label)* , response_na?)>
<!ATTLIST render_hotspot  %I_MaxNumber;
                           %I_MinNumber;
                           showdraw     (Yes | No )  'No' ><!ELEMENT render_slider ((material | material_ref | response_label | flow_label)* , response_na?)>
<!ATTLIST render_slider  orientation  (Horizontal | Vertical )  'Horizontal'
                          lowerbound  CDATA  #REQUIRED
                          upperbound  CDATA  #REQUIRED
                          step        CDATA  #IMPLIED
                          startval    CDATA  #IMPLIED
                          steplabel    (Yes | No )  'No'
                          %I_MaxNumber;
                          %I_MinNumber; ><!ELEMENT render_fib ((material | material_ref | response_label | flow_label)* , response_na?)>
<!ATTLIST render_fib  encoding    CDATA  'UTF_8'
                       fibtype      (String | Integer | Decimal | Scientific )  'String'
                       rows        CDATA  #IMPLIED
                       maxchars    CDATA  #IMPLIED
                       prompt       (Box | Dashline | Asterisk | Underline )  #IMPLIED
                       columns     CDATA  #IMPLIED
                       %I_CharSet;
                       %I_MaxNumber;
                       %I_MinNumber; ><!ELEMENT resprocessing (qticomment? , outcomes , (respcondition | itemproc_extension)+)>
<!ATTLIST resprocessing  %I_ScoreModel; ><!ELEMENT outcomes (qticomment? , (decvar , interpretvar*)+)>
<!ELEMENT respcondition (qticomment? , conditionvar , setvar* , displayfeedback* , respcond_extension?)>
<!ATTLIST respcondition  %I_Continue;
                          %I_Title; ><!ELEMENT itemfeedback ((flow_mat | material) | solution | hint)+>
<!ATTLIST itemfeedback  %I_View;
                         %I_Ident;
                         %I_Title; ><!ELEMENT solution (qticomment? , solutionmaterial+)>
<!ATTLIST solution  %I_FeedbackStyle; ><!ELEMENT solutionmaterial (material+ | flow_mat+)>
<!ELEMENT hint (qticomment? , hintmaterial+)>
<!ATTLIST hint  %I_FeedbackStyle; ><!ELEMENT hintmaterial (material+ | flow_mat+)>
<!--	+++++++++++++++++++++++++++++++++++++++++++++++++++++++		--><!--	*******************************************************		--><!--		SELECTION AND ORDERING OBJECT DEFINITIONS				--><!--	*******************************************************		--><!ELEMENT selection (sourcebank_ref? , selection_number? , selection_metadata? , (and_selection | or_selection | not_selection | selection_extension)?)>
<!ELEMENT order (order_extension?)>
<!ATTLIST order  order_type CDATA  #REQUIRED ><!ELEMENT selection_number (#PCDATA)>
<!ELEMENT selection_metadata (#PCDATA)>
<!ATTLIST selection_metadata  %I_Mdname;
                               %I_Mdoperator;><!ELEMENT sequence_parameter (#PCDATA)>
<!ELEMENT sourcebank_ref (#PCDATA)>
<!ATTLIST sequence_parameter  %I_Pname;><!ELEMENT and_selection (selection_metadata | and_selection | or_selection | not_selection)+>
<!ELEMENT or_selection (selection_metadata | and_selection | or_selection | not_selection)+>
<!ELEMENT not_selection (selection_metadata | and_selection | or_selection | not_selection)>
<!--	+++++++++++++++++++++++++++++++++++++++++++++++++++++++		--><!--	*******************************************************		--><!--			OUTCOMES PREOCESSING OBJECT DEFINITIONS				--><!--	*******************************************************		--><!ELEMENT objects_condition (qticomment? , (outcomes_metadata | and_objects | or_objects | not_objects)? , objects_parameter* , map_input* , objectscond_extension?)>
<!ELEMENT map_output (#PCDATA)>
<!ATTLIST map_output  %I_VarName;><!ELEMENT map_input (#PCDATA)>
<!ATTLIST map_input  %I_VarName;><!ELEMENT outcomes_feedback_test (test_variable , displayfeedback+)>
<!ATTLIST outcomes_feedback_test  %I_Title; ><!ELEMENT outcomes_metadata (#PCDATA)>
<!ATTLIST outcomes_metadata  %I_Mdname;
                              %I_Mdoperator;><!ELEMENT and_objects (outcomes_metadata | and_objects | or_objects | not_objects)+>
<!ELEMENT or_objects (outcomes_metadata | and_objects | or_objects | not_objects)+>
<!ELEMENT not_objects (outcomes_metadata | and_objects | or_objects | not_objects)>
<!ELEMENT test_variable (variable_test | and_test | or_test | not_test)>
<!ELEMENT processing_parameter (#PCDATA)>
<!ATTLIST processing_parameter  %I_Pname;>
<!ELEMENT and_test (variable_test | and_test | or_test | not_test)+>
<!ELEMENT or_test (variable_test | and_test | or_test | not_test)+>
<!ELEMENT not_test (variable_test | and_test | or_test | not_test)>
<!ELEMENT variable_test (#PCDATA)>
<!ATTLIST variable_test  %I_VarName;
                          %I_Testoperator;><!ELEMENT objects_parameter (#PCDATA)>
<!ATTLIST objects_parameter  %I_Pname;>
\ No newline at end of file

src/main/java/org/olat/ims/resources/dtd/ims_qtiresv1p2.dtd

+<?xml version='1.0' encoding='UTF-8' ?>
<!--Generated by XML Authority-->
<!--	*******************************************************		--><!--																--><!--	TITLE:		ims_qtiresv1p2.dtd								--><!--	TYPE:		IMS Question and Test Interoperability			--><!--				Results Reporting								--><!--																--><!--	REVISION HISTORY:											--><!--	Date	        Author										--><!--	====	        ======										--><!--	922th Jan 2002	Colin Smythe								--><!--																--><!--	This specification has been approved as a Final release.	--><!--																--><!--	+++++++++++++++++++++++++++++++++++++++++++++++++++++++		--><!--	*******************************************************		--><!--					ENTITY DEFINITIONS							--><!--	*******************************************************		--><!ENTITY % I_Vartype " vartype  (Integer | Decimal | Scientific | String | Boolean | Set | Enumerated )  'Integer'">
<!ENTITY % I_Varname " varname CDATA  'SCORE'">
<!ENTITY % I_Identref " ident_ref CDATA  #IMPLIED">
<!ENTITY % I_Evaltitle " asi_title CDATA  #IMPLIED">
<!ENTITY % I_Presented " presented  (Yes | No | Unknown )  'Yes'">
<!ENTITY % I_Status " status  (Valid | Noanswer | Error )  'Valid'">
<!ENTITY % I_Uri " uri CDATA  #IMPLIED">
<!ENTITY % I_Entityref " entityref ENTITY  #IMPLIED">
<!--	+++++++++++++++++++++++++++++++++++++++++++++++++++++++		--><!--	*******************************************************		--><!--					ROOT DEFINITION								--><!--	*******************************************************		--><!ELEMENT qti_result_report (qti_comment? , result+)>
<!--	+++++++++++++++++++++++++++++++++++++++++++++++++++++++		-->
<!ELEMENT qti_comment (#PCDATA)>
<!ATTLIST qti_comment  xml:lang CDATA  #IMPLIED >
<!--	*******************************************************		--><!--				CORE OBJECT DEFINITIONS							--><!--	*******************************************************		--><!ELEMENT result (qti_comment? , context , (summary_result | assessment_result | section_result | item_result) , extension_result?)>
<!ELEMENT context (qti_comment? , name? , generic_identifier* , date* , extension_context?)>
<!ELEMENT summary_result (qti_comment? , type_label? , generic_identifier* , date* , status? , duration? , score? , grade? , outcomes? , extension_summary_result?)>
<!ATTLIST summary_result  %I_Evaltitle; ><!ELEMENT assessment_result (qti_comment? , asi_metadata* , asi_description? , date* , duration? , objective* , control? , outcomes? , feedback_displayed* , num_items? , num_sections? , num_items_presented? , num_items_attempted? , num_sections_presented? , section_result* , extension_assessment_result?)>
<!ATTLIST assessment_result  %I_Identref;
                              %I_Evaltitle; ><!ELEMENT section_result (qti_comment? , asi_metadata* , asi_description? , date* , duration? , objective* , control? , outcomes? , feedback_displayed* , num_items? , num_sections? , num_items_presented? , num_items_attempted? , num_sections_presented? , (section_result | item_result)* , extension_section_result?)>
<!ATTLIST section_result  %I_Evaltitle;
                           %I_Identref;
                           %I_Presented; ><!ELEMENT item_result (qti_comment? , asi_metadata* , asi_description? , date* , duration? , objective* , control? , response* , outcomes? , feedback_displayed* , extension_item_result?)>
<!ATTLIST item_result  %I_Evaltitle;
                        %I_Identref;
                        %I_Presented; ><!--	+++++++++++++++++++++++++++++++++++++++++++++++++++++++		-->
<!--	*******************************************************		--><!--				SUPPORT OBJECT DEFINITIONS						--><!--	*******************************************************		-->
<!ELEMENT name (#PCDATA)>
<!ELEMENT generic_identifier (type_label? , identifier_string)>
<!ELEMENT date (type_label? , datetime)>
<!ELEMENT score_min (#PCDATA)>
<!ELEMENT score_max (#PCDATA)>
<!ELEMENT score_value (#PCDATA)>
<!ELEMENT grade (grade_value , grade_cut? , extension_grade?)>
<!ATTLIST grade  %I_Varname;
                  %I_Status;
                  members   CDATA  #IMPLIED ><!ELEMENT duration (#PCDATA)>
<!ELEMENT type_label (#PCDATA)>
<!ATTLIST type_label  source CDATA  #IMPLIED ><!ELEMENT status (type_label? , datetime? , status_value)>
<!ELEMENT objective (#PCDATA)>
<!ATTLIST objective  view         (All | 
                                    Administrator | 
                                    AdminAuthority | 
                                    Assessor | 
                                    Author | 
                                    Candidate | 
                                    InvigilatorProctor | 
                                    Psychometrician | 
                                    Scorer | 
                                    Tutor )  'All'
                      %I_Uri;
                      %I_Entityref; ><!ELEMENT control (#PCDATA)>
<!ATTLIST control  hint_switch      (Yes | No )  'No'
                    solution_switch  (Yes | No )  'No'
                    feedback_switch  (Yes | No )  'No' ><!ELEMENT asi_metadata (vocabulary? , asi_metadatafield+)>
<!ELEMENT response (qti_comment? , response_form? , num_attempts? , response_value* , extension_response?)>
<!ATTLIST response  %I_Identref; ><!ELEMENT response_value (#PCDATA)>
<!ATTLIST response_value  %I_Uri;
                           %I_Entityref;
                           response_status  (Null | Valid | NA | Invalid )  'Valid'
                           response_time   CDATA  #IMPLIED ><!ELEMENT feedback_displayed (#PCDATA)>
<!ATTLIST feedback_displayed  %I_Uri;
                               %I_Entityref;
                               %I_Identref;
                               %I_Evaltitle; ><!ELEMENT num_items (#PCDATA)>
<!ELEMENT num_sections (#PCDATA)>
<!ELEMENT num_sections_presented (#PCDATA)>
<!ELEMENT num_items_attempted (#PCDATA)>
<!ELEMENT num_items_presented (#PCDATA)>
<!ELEMENT response_form (correct_response* , extension_responseform?)>
<!ATTLIST response_form  cardinality    (single | multiple | ordered | extension )  #IMPLIED
                          render_type    (choice | hotspot | slider | fib | extension )  #IMPLIED
                          timing         (Yes | No )  #IMPLIED
                          response_type  (lid | xy | str | num | grp | extension )  #IMPLIED ><!ELEMENT correct_response (#PCDATA)>
<!ELEMENT outcomes (status? , (score | grade)*)>
<!ELEMENT score (score_value , score_interpretation? , score_min? , score_max? , score_normalized? , score_average? , score_std_error? , score_reliability? , score_cut? , extension_score?)>
<!ATTLIST score  %I_Varname;
                  %I_Vartype;
                  %I_Status; ><!ELEMENT score_cut (#PCDATA)>
<!ELEMENT grade_value (#PCDATA)>
<!ELEMENT grade_cut (#PCDATA)>
<!ELEMENT score_average (#PCDATA)>
<!ELEMENT score_std_error (#PCDATA)>
<!ELEMENT num_attempts (#PCDATA)>
<!ELEMENT asi_description (#PCDATA)>
<!ATTLIST asi_description  %I_Uri;
                            %I_Entityref; ><!ELEMENT identifier_string (#PCDATA)>
<!ELEMENT datetime (#PCDATA)>
<!ELEMENT status_value (#PCDATA)>
<!ELEMENT vocabulary (#PCDATA)>
<!ATTLIST vocabulary  %I_Uri;
                       %I_Entityref;
                       vocab_type  CDATA  #IMPLIED >
                       <!ELEMENT asi_metadatafield (field_name , field_value)>
<!ATTLIST asi_metadatafield  xml:lang CDATA  #IMPLIED ><!ELEMENT field_name (#PCDATA)>
<!ELEMENT field_value (#PCDATA)>
<!ELEMENT score_reliability (#PCDATA)>
<!ELEMENT score_interpretation (#PCDATA)>
<!ATTLIST score_interpretation  %I_Uri;
                                 %I_Entityref; >
                                 <!--	*******************************************************		--><!--					EXTENSION DEFINITIONS						--><!--	*******************************************************		--><!ELEMENT extension_context ANY>
<!ELEMENT extension_assessment_result ANY>
<!ELEMENT extension_section_result ANY>
<!ELEMENT extension_score ANY>
<!ELEMENT extension_summary_result ANY>
<!ELEMENT extension_item_result ANY>
<!ELEMENT extension_response ANY>
<!ELEMENT extension_responseform ANY>
<!ELEMENT extension_grade ANY>
<!ELEMENT extension_result ANY>
<!ELEMENT score_normalized (#PCDATA)>
\ No newline at end of file

src/main/java/org/olat/modules/qpool/QuestionItem.java

@@ -37,6 +37,7 @@ public interface QuestionItem extends QuestionItemShort {
 	
 	public String getLevel();
 	
+	public String getDirectory();
 	
 	public String getEditor();
 	

src/main/java/org/olat/modules/qpool/QuestionItemShort.java

@@ -34,6 +34,8 @@ public interface QuestionItemShort extends OLATResourceable {
 	
 	public Long getKey();
 	
+	public String getUuid();
+	
 	public Date getCreationDate();
 	
 	public Date getLastModified();

src/main/java/org/olat/modules/qpool/QuestionPoolModule.java

@@ -19,12 +19,18 @@
  */
 package org.olat.modules.qpool;
 
+import java.io.File;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
+import org.olat.core.commons.modules.bc.vfs.OlatRootFolderImpl;
 import org.olat.core.configuration.AbstractOLATModule;
 import org.olat.core.configuration.ConfigOnOff;
 import org.olat.core.configuration.PersistedProperties;
+import org.olat.core.util.vfs.VFSContainer;
+import org.olat.modules.qpool.impl.PdfQuestionPoolServiceProvider;
+import org.olat.modules.qpool.impl.TextQuestionPoolServiceProvider;
 
 /**
  * 
@@ -36,9 +42,12 @@ public class QuestionPoolModule extends AbstractOLATModule implements ConfigOnOf
 	
 	private final List<QuestionPoolSPI> questionPoolProviders = new ArrayList<QuestionPoolSPI>();
 
+	private VFSContainer rootContainer;
+
 	@Override
 	public void init() {
-		//
+		addQuestionPoolProvider(new TextQuestionPoolServiceProvider());
+		addQuestionPoolProvider(new PdfQuestionPoolServiceProvider());
 	}
 
 	@Override
@@ -60,14 +69,25 @@ public class QuestionPoolModule extends AbstractOLATModule implements ConfigOnOf
 	public boolean isEnabled() {
 		return true;
 	}
+	
+	public VFSContainer getRootContainer() {
+		if(rootContainer == null) {
+			rootContainer = new OlatRootFolderImpl(File.separator + "qpool", null);
+		}
+		return rootContainer;
+	}
 
 	public List<QuestionPoolSPI> getQuestionPoolProviders() {
-		return new ArrayList<QuestionPoolSPI>(questionPoolProviders);
+		List<QuestionPoolSPI> providers = new ArrayList<QuestionPoolSPI>(questionPoolProviders);
+		Collections.sort(providers, new QuestionPoolSPIComparator());
+		return providers;
 	}
 
 	public void setQuestionPoolProviders(List<QuestionPoolSPI> providers) {
 		if(providers != null) {
-			questionPoolProviders.addAll(providers);
+			for(QuestionPoolSPI provider:providers) {
+				addQuestionPoolProvider(provider);
+			}
 		}
 	}
 	
@@ -81,8 +101,19 @@ public class QuestionPoolModule extends AbstractOLATModule implements ConfigOnOf
 	}
 	
 	public void addQuestionPoolProvider(QuestionPoolSPI provider) {
-		questionPoolProviders.add(provider);
+		int currentIndex = -1;
+		for(int i=questionPoolProviders.size(); i-->0; ) {
+			QuestionPoolSPI currentProvider = questionPoolProviders.get(i);
+			if(provider.getFormat() != null &&
+					provider.getFormat().equals(currentProvider.getFormat())) {
+				currentIndex = i;
+			}
+		}
+		
+		if(currentIndex >= 0) {
+			questionPoolProviders.set(currentIndex, provider);
+		} else {
+			questionPoolProviders.add(provider);
+		}
 	}
-
-
 }

src/main/java/org/olat/modules/qpool/QuestionPoolSPI.java

@@ -19,9 +19,12 @@
  */
 package org.olat.modules.qpool;
 
+import java.io.File;
+
 import org.olat.core.gui.UserRequest;
 import org.olat.core.gui.control.Controller;
 import org.olat.core.gui.control.WindowControl;
+import org.olat.core.util.vfs.VFSLeaf;
 
 /**
  * 
@@ -31,8 +34,14 @@ import org.olat.core.gui.control.WindowControl;
  */
 public interface QuestionPoolSPI {
 	
+	public int getPriority();
+	
 	public String getFormat();
 	
+	public boolean isCompatible(String filename, File file);
+	
+	public boolean isCompatible(String filename, VFSLeaf file);
+	
 	public Controller getPreviewController(UserRequest ureq, WindowControl wControl, QuestionItem item);
 
 	public Controller getEditableController(UserRequest ureq, WindowControl wControl, QuestionItem item);

src/main/java/org/olat/modules/qpool/QuestionPoolSPIComparator.java

+/**
+ * <a href="http://www.openolat.org">
+ * OpenOLAT - Online Learning and Training</a><br>
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License"); <br>
+ * you may not use this file except in compliance with the License.<br>
+ * You may obtain a copy of the License at the
+ * <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache homepage</a>
+ * <p>
+ * Unless required by applicable law or agreed to in writing,<br>
+ * software distributed under the License is distributed on an "AS IS" BASIS, <br>
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
+ * See the License for the specific language governing permissions and <br>
+ * limitations under the License.
+ * <p>
+ * Initial code contributed and copyrighted by<br>
+ * frentix GmbH, http://www.frentix.com
+ * <p>
+ */
+package org.olat.modules.qpool;
+
+import java.util.Comparator;
+
+/**
+ * Sort by priority
+ * Initial date: 27.02.2013<br>
+ * @author srosse, stephane.rosse@frentix.com, http://www.frentix.com
+ *
+ */
+public class QuestionPoolSPIComparator implements Comparator<QuestionPoolSPI> {
+
+	@Override
+	public int compare(QuestionPoolSPI o1, QuestionPoolSPI o2) {
+		int p1 = o1.getPriority();
+		int p2 = o2.getPriority();
+		return p1 < p2 ? 1 : (p1==p2 ? 0 : -1);
+	}
+}

src/main/java/org/olat/modules/qpool/QuestionPoolService.java

@@ -19,10 +19,13 @@
  */
 package org.olat.modules.qpool;
 
+import java.io.File;
 import java.util.List;
 
 import org.olat.core.commons.persistence.SortKey;
 import org.olat.core.id.Identity;
+import org.olat.core.util.vfs.VFSContainer;
+import org.olat.core.util.vfs.VFSLeaf;
 import org.olat.group.BusinessGroup;
 import org.olat.resource.OLATResource;
 
@@ -40,6 +43,12 @@ public interface QuestionPoolService {
 	
 	public void addAuthors(List<Identity> authors, List<QuestionItem> items);
 	
+	public QuestionItem importItem(Identity owner, String filename, File file);
+	
+	public VFSLeaf getRootFile(QuestionItem item);
+	
+	public VFSContainer getRootDirectory(QuestionItem item);
+	
 
 	public int countItems(Identity author);
 

src/main/java/org/olat/modules/qpool/impl/PdfQuestionPoolServiceProvider.java

+/**
+ * <a href="http://www.openolat.org">
+ * OpenOLAT - Online Learning and Training</a><br>
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License"); <br>
+ * you may not use this file except in compliance with the License.<br>
+ * You may obtain a copy of the License at the
+ * <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache homepage</a>
+ * <p>
+ * Unless required by applicable law or agreed to in writing,<br>
+ * software distributed under the License is distributed on an "AS IS" BASIS, <br>
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
+ * See the License for the specific language governing permissions and <br>
+ * limitations under the License.
+ * <p>
+ * Initial code contributed and copyrighted by<br>
+ * frentix GmbH, http://www.frentix.com
+ * <p>
+ */
+package org.olat.modules.qpool.impl;
+
+import java.io.File;
+
+import org.olat.core.gui.UserRequest;
+import org.olat.core.gui.control.Controller;
+import org.olat.core.gui.control.WindowControl;
+import org.olat.core.util.vfs.VFSLeaf;
+import org.olat.modules.qpool.QuestionItem;
+import org.olat.modules.qpool.QuestionPoolSPI;
+
+/**
+ * 
+ * Initial date: 26.02.2013<br>
+ * @author srosse, stephane.rosse@frentix.com, http://www.frentix.com
+ *
+ */
+public class PdfQuestionPoolServiceProvider implements QuestionPoolSPI {
+	
+	public static final String PDF_FORMAT = "pdf";
+
+	@Override
+	public int getPriority() {
+		return 0;
+	}
+
+	@Override
+	public String getFormat() {
+		return PDF_FORMAT;
+	}
+
+	@Override
+	public boolean isCompatible(String filename, File file) {
+		return !filename.toLowerCase().endsWith(".xml")
+				&& !filename.toLowerCase().endsWith(".txt")
+				&& !filename.toLowerCase().endsWith(".zip");
+	}
+
+	@Override
+	public boolean isCompatible(String filename, VFSLeaf file) {
+		return isCompatible(filename, (File)null);
+	}
+
+	@Override
+	public Controller getPreviewController(UserRequest ureq, WindowControl wControl, QuestionItem item) {
+		return null;
+	}
+
+	@Override
+	public Controller getEditableController(UserRequest ureq,	WindowControl wControl, QuestionItem item) {
+		return null;
+	}
+
+
+	
+
+}

src/main/java/org/olat/modules/qpool/impl/TextQuestionPoolServiceProvider.java

+/**
+ * <a href="http://www.openolat.org">
+ * OpenOLAT - Online Learning and Training</a><br>
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License"); <br>
+ * you may not use this file except in compliance with the License.<br>
+ * You may obtain a copy of the License at the
+ * <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache homepage</a>
+ * <p>
+ * Unless required by applicable law or agreed to in writing,<br>
+ * software distributed under the License is distributed on an "AS IS" BASIS, <br>
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
+ * See the License for the specific language governing permissions and <br>
+ * limitations under the License.
+ * <p>
+ * Initial code contributed and copyrighted by<br>
+ * frentix GmbH, http://www.frentix.com
+ * <p>
+ */
+package org.olat.modules.qpool.impl;
+
+import java.io.File;
+
+import org.olat.core.gui.UserRequest;
+import org.olat.core.gui.control.Controller;
+import org.olat.core.gui.control.WindowControl;
+import org.olat.core.util.vfs.VFSLeaf;
+import org.olat.modules.qpool.QuestionItem;
+import org.olat.modules.qpool.QuestionPoolSPI;
+
+/**
+ * 
+ * Initial date: 26.02.2013<br>
+ * @author srosse, stephane.rosse@frentix.com, http://www.frentix.com
+ *
+ */
+public class TextQuestionPoolServiceProvider implements QuestionPoolSPI {
+
+	public static final String TXT_FORMAT = "txt";
+	
+	@Override
+	public int getPriority() {
+		return 1;
+	}
+
+	@Override
+	public String getFormat() {
+		return TXT_FORMAT;
+	}
+	
+	@Override
+	public boolean isCompatible(String filename, File file) {
+		return filename.toLowerCase().endsWith(".txt");
+	}
+
+	@Override
+	public boolean isCompatible(String filename, VFSLeaf file) {
+		return isCompatible(filename, (File)null);
+	}
+
+	@Override
+	public Controller getPreviewController(UserRequest ureq, WindowControl wControl, QuestionItem item) {
+		return null;
+	}
+
+	@Override
+	public Controller getEditableController(UserRequest ureq, WindowControl wControl, QuestionItem item) {
+		return null;
+	}
+}

src/main/java/org/olat/modules/qpool/manager/NullPoolService.java

@@ -94,7 +94,7 @@ public class NullPoolService implements ApplicationListener<ContextRefreshedEven
 			for(int i=0; i<200; i++) {
 				long randomIndex = Math.round(Math.random() * (fields.size() - 1));
 				StudyField field = fields.get((int)randomIndex);
-				QuestionItem item = questionItemDao.create(null, "NGC " + i, QTIConstants.QTI_12_FORMAT, Locale.ENGLISH.getLanguage(), field, randomType());
+				QuestionItem item = questionItemDao.create(null, "NGC " + i, QTIConstants.QTI_12_FORMAT, Locale.ENGLISH.getLanguage(), field, null, randomType());
 				poolDao.addItemToPool(item, pools.get(0));
 			}
 		}

src/main/java/org/olat/modules/qpool/manager/QuestionItemDAO.java

@@ -22,6 +22,7 @@ package org.olat.modules.qpool.manager;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
+import java.util.UUID;
 
 import javax.persistence.EntityManager;
 import javax.persistence.LockModeType;
@@ -59,18 +60,33 @@ public class QuestionItemDAO {
 	@Autowired
 	private BaseSecurity securityManager;
 	
+	
 	public QuestionItem create(Identity owner, String subject, String format, String language,
-			StudyField field, QuestionType type) {
+			StudyField field, String rootFilename, QuestionType type) {
+
+		String uuid = UUID.randomUUID().toString();
+		return create(owner, subject, format, language, field, uuid, rootFilename, type) ;
+	}
+	
+	public QuestionItem create(Identity owner, String subject, String format, String language,
+			StudyField field, String uuid, String rootFilename, QuestionType type) {
 		QuestionItemImpl item = new QuestionItemImpl();
+		
+		
+		item.setUuid(uuid);
 		item.setCreationDate(new Date());
 		item.setLastModified(new Date());
 		item.setSubject(subject);
 		item.setStatus(QuestionStatus.inWork.name());
 		item.setUsage(0);
-		item.setType(type.name());
+		if(type != null) {
+			item.setType(type.name());
+		}
 		item.setFormat(format);
 		item.setLanguage(language);
 		item.setStudyField(field);
+		item.setDirectory(generateDir(uuid));
+		item.setRootFilename(rootFilename);
 		SecurityGroup authorGroup = securityManager.createAndPersistSecurityGroup();
 		item.setAuthorGroup(authorGroup);
 		dbInstance.getCurrentEntityManager().persist(item);
@@ -80,6 +96,21 @@ public class QuestionItemDAO {
 		return item;
 	}
 	
+	public String generateDir(String uuid) {
+		String cleanUuid = uuid.replace("-", "");
+		String firstToken = cleanUuid.substring(0, 2);
+		String secondToken = cleanUuid.substring(2, 4);
+		String thirdToken = cleanUuid.substring(4, 6);
+		String forthToken = cleanUuid.substring(6, 8);
+		StringBuilder sb = new StringBuilder();
+		sb.append(firstToken).append("/")
+		  .append(secondToken).append("/")
+		  .append(thirdToken).append("/")
+		  .append(forthToken).append("/");
+		return sb.toString();
+	}
+	
+	
 	public void addAuthors(List<Identity> authors, QuestionItem item) {
 		QuestionItemImpl lockedItem = loadForUpdate(item.getKey());
 		SecurityGroup secGroup = lockedItem.getAuthorGroup();
@@ -149,11 +180,11 @@ public class QuestionItemDAO {
 		}
 	}
 	
-	public QuestionItem loadById(Long key) {
+	public QuestionItemImpl loadById(Long key) {
 		StringBuilder sb = new StringBuilder();
 		sb.append("select item from questionitem item where item.key=:key");
-		List<QuestionItem> items = dbInstance.getCurrentEntityManager()
-				.createQuery(sb.toString(), QuestionItem.class)
+		List<QuestionItemImpl> items = dbInstance.getCurrentEntityManager()
+				.createQuery(sb.toString(), QuestionItemImpl.class)
 				.setParameter("key", key)
 				.getResultList();
 		

src/main/java/org/olat/modules/qpool/manager/QuestionPoolServiceImpl.java

@@ -19,16 +19,32 @@
  */
 package org.olat.modules.qpool.manager;
 
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.UUID;
 
+import org.apache.commons.io.IOUtils;
 import org.olat.core.commons.persistence.DB;
 import org.olat.core.commons.persistence.SortKey;
 import org.olat.core.id.Identity;
+import org.olat.core.logging.OLog;
+import org.olat.core.logging.Tracing;
+import org.olat.core.util.ZipUtil;
+import org.olat.core.util.vfs.VFSContainer;
+import org.olat.core.util.vfs.VFSItem;
+import org.olat.core.util.vfs.VFSLeaf;
 import org.olat.group.BusinessGroup;
 import org.olat.modules.qpool.Pool;
 import org.olat.modules.qpool.QuestionItem;
 import org.olat.modules.qpool.QuestionItemCollection;
+import org.olat.modules.qpool.QuestionPoolModule;
+import org.olat.modules.qpool.QuestionPoolSPI;
 import org.olat.modules.qpool.QuestionPoolService;
 import org.olat.modules.qpool.model.QuestionItemImpl;
 import org.olat.resource.OLATResource;
@@ -44,6 +60,8 @@ import org.springframework.stereotype.Service;
 @Service("qpoolService")
 public class QuestionPoolServiceImpl implements QuestionPoolService {
 	
+	private static final OLog log = Tracing.createLoggerFor(QuestionPoolServiceImpl.class);
+	
 	@Autowired
 	private DB dbInstance;
 	@Autowired
@@ -54,6 +72,9 @@ public class QuestionPoolServiceImpl implements QuestionPoolService {
 	private StudyFieldDAO studyFieldDao;
 	@Autowired
 	private QuestionItemDAO questionItemDao;
+	@Autowired
+	private QuestionPoolModule qpoolModule;
+	
 
 	@Override
 	public String getMateriliazedPathOfStudyFields(QuestionItem item) {
@@ -84,6 +105,113 @@ public class QuestionPoolServiceImpl implements QuestionPoolService {
 		}
 	}
 
+	@Override
+	public QuestionItem importItem(Identity owner, String filename, File file) {
+		QuestionItem importedItem = null;
+		List<QuestionPoolSPI> providers = qpoolModule.getQuestionPoolProviders();
+		for(QuestionPoolSPI provider:providers) {
+			if(provider.isCompatible(filename, file)) {
+				importedItem = importItem(owner, filename, file, provider);
+			}	
+		}
+		return importedItem;
+	}
+	
+	@Override
+	public VFSLeaf getRootFile(QuestionItem item) {
+		QuestionItemImpl reloadedItem = questionItemDao.loadById(item.getKey());
+		VFSContainer root = qpoolModule.getRootContainer();
+		VFSItem dir = root.resolve(reloadedItem.getDirectory());
+		if(dir instanceof VFSContainer) {
+			VFSContainer itemContainer = (VFSContainer)dir;
+			VFSItem rootLeaf = itemContainer.resolve(reloadedItem.getRootFilename());
+			if(rootLeaf instanceof VFSLeaf) {
+				return (VFSLeaf)rootLeaf;
+			}
+		}
+		return null;
+	}
+
+	@Override
+	public VFSContainer getRootDirectory(QuestionItem item) {
+		QuestionItemImpl reloadedItem = questionItemDao.loadById(item.getKey());
+		VFSContainer root = qpoolModule.getRootContainer();
+		VFSItem dir = root.resolve(reloadedItem.getDirectory());
+		if(dir instanceof VFSContainer) {
+			return (VFSContainer)dir;
+		}
+		return null;
+	}
+
+	private QuestionItem importItem(Identity owner, String filename, File file, QuestionPoolSPI provider) {
+		String uuid = UUID.randomUUID().toString();
+		VFSContainer root = qpoolModule.getRootContainer();
+		VFSContainer itemDir = getDirectory(root, uuid);
+
+		String rootFilename = filename;
+		if(filename.toLowerCase().endsWith(".zip")) {
+			ZipUtil.unzipStrict(file, itemDir);
+			rootFilename = searchRootFilename("", itemDir, provider);
+		} else {
+			//copy
+			VFSLeaf leaf = itemDir.createChildLeaf(filename);
+			OutputStream out = leaf.getOutputStream(false);
+			InputStream in = null;
+			try {
+				in = new FileInputStream(file);
+				IOUtils.copy(in, out);
+			} catch (FileNotFoundException e) {
+				log.error("", e);
+			} catch (IOException e) {
+				log.error("", e);
+			} finally {
+				IOUtils.closeQuietly(in);
+				IOUtils.closeQuietly(out);
+			}
+		}
+		
+		return questionItemDao.create(owner, filename, provider.getFormat(), "de", null, uuid, rootFilename, null);
+	}
+	
+	private String searchRootFilename(String path, VFSContainer dir, QuestionPoolSPI provider) {
+		for(VFSItem item:dir.getItems()) {
+			if(item instanceof VFSContainer) {
+				String root = searchRootFilename(path + "/" + item.getName(), (VFSContainer)item, provider);
+				if(root != null) {
+					return root;
+				}
+			} else if(item instanceof VFSLeaf) {
+				if(provider.isCompatible(item.getName(), (VFSLeaf)item)) {
+					return path + item.getName();
+				}
+			}
+		}
+		return null;
+	}
+	
+	private VFSContainer getDirectory(VFSContainer rootContainer, String uuid) {
+		String cleanUuid = uuid.replace("-", "");
+		String firstToken = cleanUuid.substring(0, 2);
+		VFSContainer firstContainer = getNextDirectory(rootContainer, firstToken);
+		String secondToken = cleanUuid.substring(2, 4);
+		VFSContainer secondContainer = getNextDirectory(firstContainer, secondToken);
+		String thirdToken = cleanUuid.substring(4, 6);
+		VFSContainer thridContainer = getNextDirectory(secondContainer, thirdToken);
+		String forthToken = cleanUuid.substring(6, 8);
+		return getNextDirectory(thridContainer, forthToken);
+	}
+	
+	private VFSContainer getNextDirectory(VFSContainer container, String token) {
+		VFSItem nextContainer = container.resolve(token);
+		if(nextContainer instanceof VFSContainer) {
+			return (VFSContainer)nextContainer;
+		} else if (nextContainer instanceof VFSLeaf) {
+			log.error("");
+			return null;
+		}
+		return container.createChildContainer(token);
+	}
+
 	@Override
 	public int countItems(Identity author) {
 		return questionItemDao.countItems(author);

src/main/java/org/olat/modules/qpool/manager/StudyFieldDAO.java

@@ -87,6 +87,10 @@ public class StudyFieldDAO {
 	}
 
 	public String getMaterializedPath(StudyField field) {
+		if(field == null) {
+			return "";
+		}
+		
 		List<StudyField> parentLine = new ArrayList<StudyField>();
 		
 		StringBuilder sb = new StringBuilder();