Example 1 with ExpressionBuilder
use of org.olat.ims.qti.process.elements.ExpressionBuilder in project OpenOLAT by OpenOLAT.
the class AssessmentContext method initSections.
private void initSections(Element assessment, Switches sw) {
sectionContexts = new ArrayList<SectionContext>(2);
List<Element> el_sections = new ArrayList<>();
// <!ELEMENT sectionref (#PCDATA)>
// <!ATTLIST sectionref %I_LinkRefId; >
List sections = assessment.selectNodes("section|sectionref");
for (Iterator iter = sections.iterator(); iter.hasNext(); ) {
Element el_section = (Element) iter.next();
// resolve sectionref into the correct sections
if (el_section.getName().equals("sectionref")) {
String linkRefId = el_section.attributeValue("linkrefid");
el_section = (Element) el_section.selectSingleNode("//section[@ident='" + linkRefId + "']");
if (el_section == null) {
throw new RuntimeException("sectionref with ref '" + linkRefId + "' could not be resolved");
}
}
el_sections.add(el_section);
}
Element el_selordering = (Element) assessment.selectSingleNode("selection_ordering");
if (el_selordering != null) {
// do some selection and ordering
// <!ELEMENT selection_ordering (qticomment? , sequence_parameter* ,
// selection* , order?)>
// <!ATTLIST selection_ordering sequence_type CDATA #IMPLIED >
// <!ELEMENT selection (sourcebank_ref? , selection_number? ,
// selection_metadata? ,
// (and_selection | or_selection | not_selection | selection_extension)?)>
// <!ELEMENT sourcebank_ref (#PCDATA)>
// not <!ELEMENT order (order_extension?)>
// <!ATTLIST order order_type CDATA #REQUIRED >
// <!ELEMENT selection_number (#PCDATA)>
// not <!ELEMENT sequence_parameter (#PCDATA)>
// not <!ATTLIST sequence_parameter %I_Pname; >
List el_selections = el_selordering.selectNodes("selection");
// add to the run-time-section
for (Iterator it_selection = el_selections.iterator(); it_selection.hasNext(); ) {
List selectedSections;
Element el_selection = (Element) it_selection.next();
Element el_sourcebankref = (Element) el_selection.selectSingleNode("sourcebank_ref");
if (el_sourcebankref == null) {
// no reference to sourcebank, -> take internal one, but dtd disallows
// it!?? TODO
/*
* 2:27 PM] <felix.jost> aus ims qti sao: [2:27 PM] <felix.jost> 3.2.1
* <sourcebank_ref> Description: Identifies the objectbank to which
* the selection and ordering rules are to be applied. This objectbank
* may or may not be contained in the same <questestinterop> package.
* [2:27 PM] <felix.jost> aber dtd: [2:28 PM] <felix.jost> <!ELEMENT
* questestinterop (qticomment? , (objectbank | assessment | (section |
* item)+))>
*/
selectedSections = new ArrayList();
} else {
String sourceBankRef = el_sourcebankref.getText();
Element objectBank = assessInstance.getResolver().getObjectBank(sourceBankRef);
// traverse 1.: process "and" or "or" or "not" selection to get the
// items, if existing, otherwise take all items
// 2.: do the selection_number
Element andornot_selection = (Element) el_selection.selectSingleNode("and_selection|or_selection|not_selection|selection_metadata");
StringBuilder select_expr = new StringBuilder("//section");
if (andornot_selection != null) {
// some criteria, extend above xpath to select only the appropriate
// elements
select_expr.append("[");
String elName = andornot_selection.getName();
ExpressionBuilder eb = QTIHelper.getExpressionBuilder(elName);
eb.buildXPathExpression(andornot_selection, select_expr, false, true);
select_expr.append("]");
}
selectedSections = objectBank.selectNodes(select_expr.toString());
el_sections.addAll(selectedSections);
}
Element el_selection_number = (Element) el_selection.selectSingleNode("selection_number");
// --- 3. if selection_number exists, pick out some items
if (el_selection_number != null) {
String sNum = el_selection_number.getText();
int num = new Integer(sNum).intValue();
// now choose some x out of the items if selection_number exists
List<Element> newList = new ArrayList<Element>();
Random r = new Random();
int size = el_sections.size();
// only four
if (num > size)
num = size;
for (int i = 0; i < num; i++) {
int n = r.nextInt(size--);
Element o = el_sections.remove(n);
newList.add(o);
}
el_sections = newList;
/*
* pick out items -> remove unused items from section
*/
sections.removeAll(el_sections);
for (Iterator iter = sections.iterator(); iter.hasNext(); ) {
el_sections.remove(iter.next());
}
}
// append found items to existing ones
}
}
// <order order_type="Random"/>
if (el_selordering != null) {
Element el_order = (Element) el_selordering.selectSingleNode("order");
if (el_order != null) {
String order_type = el_order.attributeValue("order_type");
if (order_type.equals("Random")) {
Collections.shuffle(el_sections);
}
}
}
for (Iterator<Element> iter = el_sections.iterator(); iter.hasNext(); ) {
Element section = iter.next();
SectionContext sc = new SectionContext();
sc.setUp(assessInstance, section, sw);
sectionContexts.add(sc);
}
}Example 2 with ExpressionBuilder
use of org.olat.ims.qti.process.elements.ExpressionBuilder in project OpenOLAT by OpenOLAT.
the class QTI_and_selection method buildXPathExpression.
/**
* <!ELEMENT and_selection (selection_metadata | and_selection | or_selection | not_selection)+>
* @see org.olat.qti.process.elements.ExpressionBuilder#buildXPathExpression(org.dom4j.Element, java.lang.StringBuilder)
*/
public void buildXPathExpression(Element selectionElement, StringBuilder expr, boolean not_switch, boolean use_switch) {
if (use_switch && not_switch) {
// treat this "and" node as an "or" node (we need to propagate not's down the tree, since xpath only knows !=,< etc. , but not a not
ExpressionBuilder eb = QTIHelper.getExpressionBuilder("or_selection");
eb.buildXPathExpression(selectionElement, expr, not_switch, false);
} else {
List elems = selectionElement.elements();
// dtd: > 0
int size = elems.size();
for (int i = 0; i < size; i++) {
Element child = (Element) elems.get(i);
String name = child.getName();
ExpressionBuilder eb = QTIHelper.getExpressionBuilder(name);
eb.buildXPathExpression(child, expr, not_switch, true);
if (i < size - 1)
expr.append(" and ");
}
}
}
Also used :
Element(org.dom4j.Element)
List(java.util.List)
ExpressionBuilder(org.olat.ims.qti.process.elements.ExpressionBuilder)
Example 3 with ExpressionBuilder
use of org.olat.ims.qti.process.elements.ExpressionBuilder in project OpenOLAT by OpenOLAT.
the class SectionContext method setUp.
/**
* @param assessInstance
* @param el_section
* @param sw
*/
public void setUp(AssessmentInstance assessInstance, Element el_section, Switches sw) {
this.assessInstance = assessInstance;
this.el_section = el_section;
this.ident = el_section.attributeValue("ident");
init();
Element dur = (Element) el_section.selectSingleNode("duration");
if (dur == null) {
// no limit
durationLimit = -1;
} else {
String sdur = dur.getText();
durationLimit = QTIHelper.parseISODuration(sdur);
// Assesst Designer fix
if (durationLimit == 0)
durationLimit = -1;
}
// get objectives
Element el_objectives = (Element) el_section.selectSingleNode("objectives");
if (el_objectives != null)
objectives = new Objectives(el_objectives);
// ---------------------------------------------------------
if (sw == null) {
// no switches from the assessment context dominate
// retrieve section switches
Element el_control = (Element) el_section.selectSingleNode("sectioncontrol");
if (el_control != null) {
String feedbackswitch = el_control.attributeValue("feedbackswitch");
String hintswitch = el_control.attributeValue("hintswitch");
String solutionswitch = el_control.attributeValue("solutionswitch");
feedbackswitchedon = (feedbackswitch == null) ? true : feedbackswitch.equals("Yes");
boolean hints = (hintswitch == null) ? true : hintswitch.equals("Yes");
boolean solutions = (solutionswitch == null) ? true : solutionswitch.equals("Yes");
sw = new Switches(feedbackswitchedon, hints, solutions);
}
}
// ----------------------- selection
List<Element> el_items = new ArrayList<>();
// determine which items (sections not implemented) will be chosen/selected
// for this section
// --- 1. take all items and resolved itemrefs which are in the section
List items = el_section.selectNodes("item|itemref");
for (Iterator iter = items.iterator(); iter.hasNext(); ) {
Element el_item = (Element) iter.next();
// % I_LinkRefId " linkrefid CDATA #REQUIRED">
if (el_item.getName().equals("itemref")) {
// resolve the entity first
String linkRefId = el_item.attributeValue("linkrefid");
el_item = (Element) el_section.selectSingleNode("//item[@ident='" + linkRefId + "']");
// if item == null -> TODO Error
}
el_items.add(el_item);
}
// --- 2. select all items from the objectbank which fulfill the selection
// criteria
Element el_selordering = (Element) el_section.selectSingleNode("selection_ordering");
if (el_selordering != null) {
// do some selection and ordering
// here comes the selection....
// xpath =
// "//item[itemmetadata/qtimetadata/qtimetadatafield[fieldlabel[text()='qmd_dificulty']
// and fieldentry[text()='4']] or
// itemmetadata/qtimetadata/qtimetadatafield[fieldlabel[text()='qmd_author']
// and fieldentry[text()='felix']]]"
// <!ELEMENT selection_ordering (qticomment? , sequence_parameter* ,
// selection* , order?)>
// <!ATTLIST selection_ordering sequence_type CDATA #IMPLIED >
// <!ELEMENT selection (sourcebank_ref? , selection_number? ,
// selection_metadata? ,
// (and_selection | or_selection | not_selection | selection_extension)?)>
// <!ELEMENT sourcebank_ref (#PCDATA)>
// not <!ELEMENT order (order_extension?)>
// <!ATTLIST order order_type CDATA #REQUIRED >
// <!ELEMENT selection_number (#PCDATA)>
// not <!ELEMENT sequence_parameter (#PCDATA)>
// not <!ATTLIST sequence_parameter %I_Pname; >
List el_selections = el_selordering.selectNodes("selection");
// add to the run-time-section
for (Iterator it_selection = el_selections.iterator(); it_selection.hasNext(); ) {
List selectedItems;
Element el_selection = (Element) it_selection.next();
Element el_sourcebankref = (Element) el_selection.selectSingleNode("sourcebank_ref");
if (el_sourcebankref == null) {
// no reference to sourcebank, -> take internal one, but dtd disallows
// it!?? TODO
/*
* 2:27 PM] <felix.jost> aus ims qti sao: [2:27 PM] <felix.jost> 3.2.1
* <sourcebank_ref> Description: Identifies the objectbank to which
* the selection and ordering rules are to be applied. This objectbank
* may or may not be contained in the same <questestinterop> package.
* [2:27 PM] <felix.jost> aber dtd: [2:28 PM] <felix.jost> <!ELEMENT
* questestinterop (qticomment? , (objectbank | assessment | (section |
* item)+))>
*/
selectedItems = new ArrayList();
} else {
String sourceBankRef = el_sourcebankref.getText();
Element objectBank = assessInstance.getResolver().getObjectBank(sourceBankRef);
// traverse 1.: process "and" or "or" or "not" selection to get the
// items, if existing, otherwise take all items
// 2.: do the selection_number
Element andornot_selection = (Element) el_selection.selectSingleNode("and_selection|or_selection|not_selection|selection_metadata");
StringBuilder select_expr = new StringBuilder("//item");
if (andornot_selection != null) {
// some criteria, extend above xpath to select only the appropriate
// elements
select_expr.append("[");
String elName = andornot_selection.getName();
ExpressionBuilder eb = QTIHelper.getExpressionBuilder(elName);
eb.buildXPathExpression(andornot_selection, select_expr, false, true);
select_expr.append("]");
}
selectedItems = objectBank.selectNodes(select_expr.toString());
el_items.addAll(selectedItems);
}
Element el_selection_number = (Element) el_selection.selectSingleNode("selection_number");
// --- 3. if selection_number exists, pick out some items
if (el_selection_number != null) {
String sNum = el_selection_number.getText();
int num = new Integer(sNum).intValue();
// now choose some x out of the items if selection_number exists
List<Element> newList = new ArrayList<>();
Random r = new Random();
int size = el_items.size();
// only four
if (num > size)
num = size;
for (int i = 0; i < num; i++) {
int n = r.nextInt(size--);
Element o = el_items.remove(n);
newList.add(o);
}
el_items = newList;
/*
* pick out items -> remove unused items from section
*/
items.removeAll(el_items);
for (Iterator iter = items.iterator(); iter.hasNext(); ) {
el_section.remove((Node) iter.next());
}
}
// append found items to existing ones
}
}
// <order order_type="Random"/>
if (el_selordering != null) {
Element el_order = (Element) el_selordering.selectSingleNode("order");
if (el_order != null) {
String order_type = el_order.attributeValue("order_type");
if (order_type.equals("Random")) {
Collections.shuffle(el_items);
}
}
}
// now wrap all item contexts
itemContexts = new ArrayList<ItemContext>(10);
for (Iterator<Element> iter = el_items.iterator(); iter.hasNext(); ) {
Element item = iter.next();
item.detach();
ItemContext itc = new ItemContext();
itc.setUp(assessInstance, item, sw);
if (durationLimit != -1 && assessInstance.isSectionPage())
itc.clearDurationLimit();
itemContexts.add(itc);
}
// outcomesProcessing
// <!ELEMENT section (qticomment? , duration? , qtimetadata* ,
// objectives* , sectioncontrol* , sectionprecondition* ,
// sectionpostcondition* ,
// rubric* , presentation_material? ,
// outcomes_processing* , sectionproc_extension? ,
// sectionfeedback* , selection_ordering? ,
// reference? , (itemref | item | sectionref | section)*)>
// <!ELEMENT outcomes_processing (qticomment? , outcomes ,
// objects_condition* , processing_parameter* , map_output* ,
// outcomes_feedback_test*)>
// <!ELEMENT outcomes (qticomment? , (decvar , interpretvar*)+)>
// <!ELEMENT decvar (#PCDATA)>
// <!ATTLIST decvar %I_VarName; .......cutvalue CDATA #IMPLIED >
Element el_outpro = (Element) el_section.selectSingleNode("outcomes_processing");
if (el_outpro != null) {
// get the scoring model: we need it later for calculating the score
// <!ENTITY % I_ScoreModel " scoremodel CDATA #IMPLIED">
scoremodel = el_outpro.attributeValue("scoremodel");
// may be null -> then assume SumOfScores
// set the cutvalue if given (only variable score)
cutvalue = QTIHelper.getIntAttribute(el_outpro, "outcomes/decvar[@varname='SCORE']", "cutvalue");
List el_oft = el_outpro.selectNodes("outcomes_feedback_test");
if (el_oft.size() != 0) {
feedbacktesting = true;
}
}
}
Also used :
Element(org.dom4j.Element)
Objectives(org.olat.ims.qti.container.qtielements.Objectives)
ArrayList(java.util.ArrayList)
ExpressionBuilder(org.olat.ims.qti.process.elements.ExpressionBuilder)
Random(java.util.Random)
Iterator(java.util.Iterator)
ArrayList(java.util.ArrayList)
List(java.util.List)
Example 4 with ExpressionBuilder
use of org.olat.ims.qti.process.elements.ExpressionBuilder in project openolat by klemens.
the class AssessmentContext method initSections.
private void initSections(Element assessment, Switches sw) {
sectionContexts = new ArrayList<SectionContext>(2);
List<Element> el_sections = new ArrayList<>();
// <!ELEMENT sectionref (#PCDATA)>
// <!ATTLIST sectionref %I_LinkRefId; >
List sections = assessment.selectNodes("section|sectionref");
for (Iterator iter = sections.iterator(); iter.hasNext(); ) {
Element el_section = (Element) iter.next();
// resolve sectionref into the correct sections
if (el_section.getName().equals("sectionref")) {
String linkRefId = el_section.attributeValue("linkrefid");
el_section = (Element) el_section.selectSingleNode("//section[@ident='" + linkRefId + "']");
if (el_section == null) {
throw new RuntimeException("sectionref with ref '" + linkRefId + "' could not be resolved");
}
}
el_sections.add(el_section);
}
Element el_selordering = (Element) assessment.selectSingleNode("selection_ordering");
if (el_selordering != null) {
// do some selection and ordering
// <!ELEMENT selection_ordering (qticomment? , sequence_parameter* ,
// selection* , order?)>
// <!ATTLIST selection_ordering sequence_type CDATA #IMPLIED >
// <!ELEMENT selection (sourcebank_ref? , selection_number? ,
// selection_metadata? ,
// (and_selection | or_selection | not_selection | selection_extension)?)>
// <!ELEMENT sourcebank_ref (#PCDATA)>
// not <!ELEMENT order (order_extension?)>
// <!ATTLIST order order_type CDATA #REQUIRED >
// <!ELEMENT selection_number (#PCDATA)>
// not <!ELEMENT sequence_parameter (#PCDATA)>
// not <!ATTLIST sequence_parameter %I_Pname; >
List el_selections = el_selordering.selectNodes("selection");
// add to the run-time-section
for (Iterator it_selection = el_selections.iterator(); it_selection.hasNext(); ) {
List selectedSections;
Element el_selection = (Element) it_selection.next();
Element el_sourcebankref = (Element) el_selection.selectSingleNode("sourcebank_ref");
if (el_sourcebankref == null) {
// no reference to sourcebank, -> take internal one, but dtd disallows
// it!?? TODO
/*
* 2:27 PM] <felix.jost> aus ims qti sao: [2:27 PM] <felix.jost> 3.2.1
* <sourcebank_ref> Description: Identifies the objectbank to which
* the selection and ordering rules are to be applied. This objectbank
* may or may not be contained in the same <questestinterop> package.
* [2:27 PM] <felix.jost> aber dtd: [2:28 PM] <felix.jost> <!ELEMENT
* questestinterop (qticomment? , (objectbank | assessment | (section |
* item)+))>
*/
selectedSections = new ArrayList();
} else {
String sourceBankRef = el_sourcebankref.getText();
Element objectBank = assessInstance.getResolver().getObjectBank(sourceBankRef);
// traverse 1.: process "and" or "or" or "not" selection to get the
// items, if existing, otherwise take all items
// 2.: do the selection_number
Element andornot_selection = (Element) el_selection.selectSingleNode("and_selection|or_selection|not_selection|selection_metadata");
StringBuilder select_expr = new StringBuilder("//section");
if (andornot_selection != null) {
// some criteria, extend above xpath to select only the appropriate
// elements
select_expr.append("[");
String elName = andornot_selection.getName();
ExpressionBuilder eb = QTIHelper.getExpressionBuilder(elName);
eb.buildXPathExpression(andornot_selection, select_expr, false, true);
select_expr.append("]");
}
selectedSections = objectBank.selectNodes(select_expr.toString());
el_sections.addAll(selectedSections);
}
Element el_selection_number = (Element) el_selection.selectSingleNode("selection_number");
// --- 3. if selection_number exists, pick out some items
if (el_selection_number != null) {
String sNum = el_selection_number.getText();
int num = new Integer(sNum).intValue();
// now choose some x out of the items if selection_number exists
List<Element> newList = new ArrayList<Element>();
Random r = new Random();
int size = el_sections.size();
// only four
if (num > size)
num = size;
for (int i = 0; i < num; i++) {
int n = r.nextInt(size--);
Element o = el_sections.remove(n);
newList.add(o);
}
el_sections = newList;
/*
* pick out items -> remove unused items from section
*/
sections.removeAll(el_sections);
for (Iterator iter = sections.iterator(); iter.hasNext(); ) {
el_sections.remove(iter.next());
}
}
// append found items to existing ones
}
}
// <order order_type="Random"/>
if (el_selordering != null) {
Element el_order = (Element) el_selordering.selectSingleNode("order");
if (el_order != null) {
String order_type = el_order.attributeValue("order_type");
if (order_type.equals("Random")) {
Collections.shuffle(el_sections);
}
}
}
for (Iterator<Element> iter = el_sections.iterator(); iter.hasNext(); ) {
Element section = iter.next();
SectionContext sc = new SectionContext();
sc.setUp(assessInstance, section, sw);
sectionContexts.add(sc);
}
}Example 5 with ExpressionBuilder
use of org.olat.ims.qti.process.elements.ExpressionBuilder in project openolat by klemens.
the class SectionContext method setUp.
/**
* @param assessInstance
* @param el_section
* @param sw
*/
public void setUp(AssessmentInstance assessInstance, Element el_section, Switches sw) {
this.assessInstance = assessInstance;
this.el_section = el_section;
this.ident = el_section.attributeValue("ident");
init();
Element dur = (Element) el_section.selectSingleNode("duration");
if (dur == null) {
// no limit
durationLimit = -1;
} else {
String sdur = dur.getText();
durationLimit = QTIHelper.parseISODuration(sdur);
// Assesst Designer fix
if (durationLimit == 0)
durationLimit = -1;
}
// get objectives
Element el_objectives = (Element) el_section.selectSingleNode("objectives");
if (el_objectives != null)
objectives = new Objectives(el_objectives);
// ---------------------------------------------------------
if (sw == null) {
// no switches from the assessment context dominate
// retrieve section switches
Element el_control = (Element) el_section.selectSingleNode("sectioncontrol");
if (el_control != null) {
String feedbackswitch = el_control.attributeValue("feedbackswitch");
String hintswitch = el_control.attributeValue("hintswitch");
String solutionswitch = el_control.attributeValue("solutionswitch");
feedbackswitchedon = (feedbackswitch == null) ? true : feedbackswitch.equals("Yes");
boolean hints = (hintswitch == null) ? true : hintswitch.equals("Yes");
boolean solutions = (solutionswitch == null) ? true : solutionswitch.equals("Yes");
sw = new Switches(feedbackswitchedon, hints, solutions);
}
}
// ----------------------- selection
List<Element> el_items = new ArrayList<>();
// determine which items (sections not implemented) will be chosen/selected
// for this section
// --- 1. take all items and resolved itemrefs which are in the section
List items = el_section.selectNodes("item|itemref");
for (Iterator iter = items.iterator(); iter.hasNext(); ) {
Element el_item = (Element) iter.next();
// % I_LinkRefId " linkrefid CDATA #REQUIRED">
if (el_item.getName().equals("itemref")) {
// resolve the entity first
String linkRefId = el_item.attributeValue("linkrefid");
el_item = (Element) el_section.selectSingleNode("//item[@ident='" + linkRefId + "']");
// if item == null -> TODO Error
}
el_items.add(el_item);
}
// --- 2. select all items from the objectbank which fulfill the selection
// criteria
Element el_selordering = (Element) el_section.selectSingleNode("selection_ordering");
if (el_selordering != null) {
// do some selection and ordering
// here comes the selection....
// xpath =
// "//item[itemmetadata/qtimetadata/qtimetadatafield[fieldlabel[text()='qmd_dificulty']
// and fieldentry[text()='4']] or
// itemmetadata/qtimetadata/qtimetadatafield[fieldlabel[text()='qmd_author']
// and fieldentry[text()='felix']]]"
// <!ELEMENT selection_ordering (qticomment? , sequence_parameter* ,
// selection* , order?)>
// <!ATTLIST selection_ordering sequence_type CDATA #IMPLIED >
// <!ELEMENT selection (sourcebank_ref? , selection_number? ,
// selection_metadata? ,
// (and_selection | or_selection | not_selection | selection_extension)?)>
// <!ELEMENT sourcebank_ref (#PCDATA)>
// not <!ELEMENT order (order_extension?)>
// <!ATTLIST order order_type CDATA #REQUIRED >
// <!ELEMENT selection_number (#PCDATA)>
// not <!ELEMENT sequence_parameter (#PCDATA)>
// not <!ATTLIST sequence_parameter %I_Pname; >
List el_selections = el_selordering.selectNodes("selection");
// add to the run-time-section
for (Iterator it_selection = el_selections.iterator(); it_selection.hasNext(); ) {
List selectedItems;
Element el_selection = (Element) it_selection.next();
Element el_sourcebankref = (Element) el_selection.selectSingleNode("sourcebank_ref");
if (el_sourcebankref == null) {
// no reference to sourcebank, -> take internal one, but dtd disallows
// it!?? TODO
/*
* 2:27 PM] <felix.jost> aus ims qti sao: [2:27 PM] <felix.jost> 3.2.1
* <sourcebank_ref> Description: Identifies the objectbank to which
* the selection and ordering rules are to be applied. This objectbank
* may or may not be contained in the same <questestinterop> package.
* [2:27 PM] <felix.jost> aber dtd: [2:28 PM] <felix.jost> <!ELEMENT
* questestinterop (qticomment? , (objectbank | assessment | (section |
* item)+))>
*/
selectedItems = new ArrayList();
} else {
String sourceBankRef = el_sourcebankref.getText();
Element objectBank = assessInstance.getResolver().getObjectBank(sourceBankRef);
// traverse 1.: process "and" or "or" or "not" selection to get the
// items, if existing, otherwise take all items
// 2.: do the selection_number
Element andornot_selection = (Element) el_selection.selectSingleNode("and_selection|or_selection|not_selection|selection_metadata");
StringBuilder select_expr = new StringBuilder("//item");
if (andornot_selection != null) {
// some criteria, extend above xpath to select only the appropriate
// elements
select_expr.append("[");
String elName = andornot_selection.getName();
ExpressionBuilder eb = QTIHelper.getExpressionBuilder(elName);
eb.buildXPathExpression(andornot_selection, select_expr, false, true);
select_expr.append("]");
}
selectedItems = objectBank.selectNodes(select_expr.toString());
el_items.addAll(selectedItems);
}
Element el_selection_number = (Element) el_selection.selectSingleNode("selection_number");
// --- 3. if selection_number exists, pick out some items
if (el_selection_number != null) {
String sNum = el_selection_number.getText();
int num = new Integer(sNum).intValue();
// now choose some x out of the items if selection_number exists
List<Element> newList = new ArrayList<>();
Random r = new Random();
int size = el_items.size();
// only four
if (num > size)
num = size;
for (int i = 0; i < num; i++) {
int n = r.nextInt(size--);
Element o = el_items.remove(n);
newList.add(o);
}
el_items = newList;
/*
* pick out items -> remove unused items from section
*/
items.removeAll(el_items);
for (Iterator iter = items.iterator(); iter.hasNext(); ) {
el_section.remove((Node) iter.next());
}
}
// append found items to existing ones
}
}
// <order order_type="Random"/>
if (el_selordering != null) {
Element el_order = (Element) el_selordering.selectSingleNode("order");
if (el_order != null) {
String order_type = el_order.attributeValue("order_type");
if (order_type.equals("Random")) {
Collections.shuffle(el_items);
}
}
}
// now wrap all item contexts
itemContexts = new ArrayList<ItemContext>(10);
for (Iterator<Element> iter = el_items.iterator(); iter.hasNext(); ) {
Element item = iter.next();
item.detach();
ItemContext itc = new ItemContext();
itc.setUp(assessInstance, item, sw);
if (durationLimit != -1 && assessInstance.isSectionPage())
itc.clearDurationLimit();
itemContexts.add(itc);
}
// outcomesProcessing
// <!ELEMENT section (qticomment? , duration? , qtimetadata* ,
// objectives* , sectioncontrol* , sectionprecondition* ,
// sectionpostcondition* ,
// rubric* , presentation_material? ,
// outcomes_processing* , sectionproc_extension? ,
// sectionfeedback* , selection_ordering? ,
// reference? , (itemref | item | sectionref | section)*)>
// <!ELEMENT outcomes_processing (qticomment? , outcomes ,
// objects_condition* , processing_parameter* , map_output* ,
// outcomes_feedback_test*)>
// <!ELEMENT outcomes (qticomment? , (decvar , interpretvar*)+)>
// <!ELEMENT decvar (#PCDATA)>
// <!ATTLIST decvar %I_VarName; .......cutvalue CDATA #IMPLIED >
Element el_outpro = (Element) el_section.selectSingleNode("outcomes_processing");
if (el_outpro != null) {
// get the scoring model: we need it later for calculating the score
// <!ENTITY % I_ScoreModel " scoremodel CDATA #IMPLIED">
scoremodel = el_outpro.attributeValue("scoremodel");
// may be null -> then assume SumOfScores
// set the cutvalue if given (only variable score)
cutvalue = QTIHelper.getIntAttribute(el_outpro, "outcomes/decvar[@varname='SCORE']", "cutvalue");
List el_oft = el_outpro.selectNodes("outcomes_feedback_test");
if (el_oft.size() != 0) {
feedbacktesting = true;
}
}
}
Also used :
Element(org.dom4j.Element)
Objectives(org.olat.ims.qti.container.qtielements.Objectives)
ArrayList(java.util.ArrayList)
ExpressionBuilder(org.olat.ims.qti.process.elements.ExpressionBuilder)
Random(java.util.Random)
Iterator(java.util.Iterator)
ArrayList(java.util.ArrayList)
List(java.util.List)
Aggregations
List (java.util.List)10
Element (org.dom4j.Element)10
ExpressionBuilder (org.olat.ims.qti.process.elements.ExpressionBuilder)10
ArrayList (java.util.ArrayList)4
Iterator (java.util.Iterator)4
Random (java.util.Random)4
Objectives (org.olat.ims.qti.container.qtielements.Objectives)2
