SeqTreeBuilder.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2007 ILIAS open source, University of Cologne            |
        |                                                                             |
        | This program is free software; you can redistribute it and/or               |
        | modify it under the terms of the GNU General Public License                 |
        | as published by the Free Software Foundation; either version 2              |
        | of the License, or (at your option) any later version.                      |
        |                                                                             |
        | This program is distributed in the hope that it will be useful,             |
        | but WITHOUT ANY WARRANTY; without even the implied warranty of              |
        | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               |
        | GNU General Public License for more details.                                |
        |                                                                             |
        | You should have received a copy of the GNU General Public License           |
        | along with this program; if not, write to the Free Software                 |
        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/
/*
        PHP port of several ADL-sources
        @author Hendrik Holtmann <holtmann@mac.com>
        
        This .php file is GPL licensed (see above) but based on
        Sourcecode by ADL Co-Lab, which is licensed as:
        
        Advanced Distributed Learning Co-Laboratory (ADL Co-Lab) Hub grants you 
        ("Licensee") a non-exclusive, royalty free, license to use, modify and 
        redistribute this software in source and binary code form, provided that 
        i) this copyright notice and license appear on all copies of the software; 
        and ii) Licensee does not utilize the software in a manner which is 
        disparaging to ADL Co-Lab Hub.

        This software is provided "AS IS," without a warranty of any kind.  ALL 
        EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING 
        ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE 
        OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED.  ADL Co-Lab Hub AND ITS LICENSORS 
        SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF 
        USING, MODIFYING OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES.  IN NO 
        EVENT WILL ADL Co-Lab Hub OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, 
        PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, 
        INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE 
        THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE 
        SOFTWARE, EVEN IF ADL Co-Lab Hub HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 
        DAMAGES.
*/

        require_once("SeqActivity.php");
        
        require_once("SeqRule.php");
        require_once("SeqRuleset.php");
        
        require_once("SeqCondition.php");
        require_once("SeqConditionSet.php");
        
        require_once("SeqObjective.php");
        require_once("SeqObjectiveMap.php");
        
        require_once("SeqRollupRule.php");
        require_once("SeqRollupRuleset.php");
        
        require_once("ADLAuxiliaryResource.php");

        class SeqTreeBuilder{

          public function buildNodeSeqTree($file){
                
                $doc = new DomDocument();
                $doc->load($file);
                $organizations = $doc->getElementsByTagName("organizations");
                
                //lookup default organization id
                $default=preg_replace('/(%20)+/', ' ', trim($organizations->item(0)->getAttribute("default")));
                
                //get all organization nodes
                $organization = $doc->getElementsByTagName("organization");
                
                //lookup the default organization
                foreach ($organization as $element) {
                        if (preg_replace('/(%20)+/', ' ', trim($element->getAttribute("identifier")))==$default) {
                                $default_organization = $element;
                        }
                }
                
                //read seqCollection
                $seqCollection = $doc->getElementsByTagName("sequencingCollection")->item(0);
                
                $root = $this->buildNode($default_organization,$seqCollection,$doc);
                
                //return no data please check
                $objectivesGlobalToSystem = $default_organization->getAttributeNS("http://www.adlnet.org/xsd/adlseq_v1p3","objectivesGlobalToSystem");
        
                $org = preg_replace('/(%20)+/', ' ', trim($default_organization->getAttribute("identifier")));
                
                //default true
                $globaltosystem = 1;
                
                if ($objectivesGlobalToSystem=="false") {
                        $globaltosystem = 0;
                }
                
            //return no data please check
                $dataGlobalToSystem = $default_organization->getAttributeNS("http://www.adlnet.org/xsd/adlcp_v1p3","sharedDataGlobalToSystem");
        
                //default true
                $dataglobaltosystem = 1;
                
                if ($dataGlobalToSystem=="false") {
                        $dataglobaltosystem = 0;
                }
                                
                //assign SeqActivity to top node
                $c_root['_SeqActivity']=$root;
                                
                $ret['global'] = $globaltosystem;
                $ret['dataglobal'] = $dataglobaltosystem;
                $ret['tree'] = $c_root;
                
                return $ret;
                
          }
          
          
          
          private function buildNode($node,$seq,$doc) {

                //create a new activity object
                $act = new SeqActivity();
                                
                //set various attributes, if existent
                $act->setID(preg_replace('/(%20)+/', ' ', trim($node->getAttribute("identifier"))));
                
                $tempVal = preg_replace('/(%20)+/', ' ', trim($node->getAttribute("identifierref")));
                if ($tempVal){
                        $act->setResourceID($tempVal);
                }
                
                $tempVal = $node->getAttribute("isvisible");
          
                if ($tempVal){
                                $act->setIsVisible(self::convert_to_bool($tempVal));
                }
                 
            
                
                //Proceed nested items
                $children = $node->childNodes;
                
                 for ($i = 0; $i < $children->length; $i++ ) {
                        
                        $curNode=$children->item($i);
                        //elements only
                        
                        if ($curNode->nodeType == XML_ELEMENT_NODE) {
                                //only items are nested
                                if ($curNode->localName == "item") {
                                        //init;
                                        $c_nestedAct=null;
                                        $nestedAct = new SeqActivity();
                                        $nestedAct = $this->buildNode($curNode,$seq,$doc);
                                        if ($nestedAct != null ) {
                                                $act->AddChild($nestedAct);
                        }
                                }
                                else if ($curNode->localName == "title") {
                                         $act->setTitle($this->lookupElement($curNode,null));
                                }
                                else if ($curNode->localName == "completionThreshold"){
                                        $tempVal = $curNode->getAttribute("minProgressMeasure");
                                         
                                         if ($tempVal){
                                                $act->setCompletionThreshold($tempVal);
                                         }
                                         else if ($curNode->nodeValue != null && $curNode->nodeValue != '') {
                                                $act->setCompletionThreshold($curNode->nodeValue);
                                         }
                
                                         $tempVal = $curNode->getAttribute("progressWeight");
                                         
                                         if ($tempVal){
                                                $act->setProgressWeight($tempVal);
                                         }
                                         $tempVal = $curNode->getAttribute("completedByMeasure");
                                 
                                         if ($tempVal){
                                                $act->setCompletedByMeasure(self::convert_to_bool($tempVal));
                                         }
                                }
                                else if ($curNode->localName == "sequencing") {
                                        $seqInfo = $curNode;
                                        //get IDRef
                                        $tempVal = preg_replace('/(%20)+/', ' ', trim($curNode->getAttribute("IDRef")));
                                        //only execute for referenced sequencing parts
                                        if ($tempVal) {
                                                //init seqGlobal
                                                $seqGlobal = null;
                                                
                                                //get all sequencing nodes in collections
                                                $sequencing = $seq->getElementsByTagName("sequencing");
          
                                                //lookup the matching sequencing element
                                                foreach ($sequencing as $element) {
                                                        if (preg_replace('/(%20)+/', ' ', trim($element->getAttribute("ID")))==$tempVal) {
                                                                $seqGlobal = $element;
                                                        }
                                                }
                                                
                                                //clone the global node
                                                $seqInfo = $seqGlobal->cloneNode(TRUE);
                                                
                                                //back to the local node
                                                $seqChildren = $curNode->childNodes;
                                for ($j = 0; $j < $seqChildren->length; $j++ ) {
                                                        //process local nodes
                                                        $curChild = $seqChildren->item($j);
                                if ( $curChild->nodeType == XML_ELEMENT_NODE ) {
                                                                //echo "\nFound Sequencing Element Node".$curChild->localName;
                                                                //add local to global sequencing info
                                                                $seqInfo->appendChild($curChild);
                                    
                                  }
                                                }
                         }      
                                        //extract the sequencing info, if we have one
                                        //avoid working with 
                                        $act=$this->extractSeqInfo($seqInfo, $act);
                                        
                                }
                        }
                        
                
                 
                        $item=$children->item($i)->nodeValue;
                }
                //add class
                //$c_act['_SeqActivity']=$act;
                return $act;
          
          }
          
          
          private function extractSeqInfo($iNode, $ioAct) {
                //set sequencing information
                $children = $iNode->childNodes;
                for ( $i = 0; $i < $children->length; $i++ ) {
                        $curNode = $children->item($i);
                if ( $curNode->nodeType == XML_ELEMENT_NODE ) {
                                if ($curNode->localName == "controlMode") {
                                        //look for choice
                                        $tempVal=$curNode->getAttribute("choice");
                                        if ($tempVal) {
                                                $ioAct->setControlModeChoice(self::convert_to_bool($tempVal));
                                        }
                                        //look for choiceExit
                                        $tempVal=$curNode->getAttribute("choiceExit");
                                        if ($tempVal) {
                                                $ioAct->setControlModeChoiceExit(self::convert_to_bool($tempVal));
                                        }
                                        
                                        //look for flow
                                        $tempVal=$curNode->getAttribute("flow");
                                        if ($tempVal) {
                                                $ioAct->setControlModeFlow(self::convert_to_bool($tempVal));
                                        }
                                        
                                        // Look for 'forwardOnly'
                        $tempVal=$curNode->getAttribute("forwardOnly");
                                        if ($tempVal) {
                                                $ioAct->setControlForwardOnly(self::convert_to_bool($tempVal));
                                        }
                                        
                                        // Look for 'useCurrentAttemptObjectiveInfo'
                            $tempVal=$curNode->getAttribute("useCurrentAttemptObjectiveInfo");
                                        if ($tempVal) {
                                                $ioAct->setUseCurObjective(self::convert_to_bool($tempVal));
                                        }
                                        
                                        // Look for 'useCurrentAttemptProgressInfo'
                                $tempVal=$curNode->getAttribute("useCurrentAttemptProgressInfo");
                                        if ($tempVal) {
                                                $ioAct->setUseCurProgress(self::convert_to_bool($tempVal));
                                        }
                                        
                                }
                                
                                else if ($curNode->localName == "sequencingRules") {
                                        $ioAct = $this->getSequencingRules($curNode,$ioAct);
                                        
                                }
                                
                                else if ($curNode->localName == "limitConditions") {
                                        // Look for 'useCurrentAttemptObjectiveInfo'
                                        $tempVal=$curNode->getAttribute("attemptLimit");
                                        if ($tempVal) {
                                                $ioAct->setAttemptLimit($tempVal);
                                        }
                                
                                        // Look for 'attemptAbsoluteDurationLimit'
                        $tempVal=$curNode->getAttribute("attemptAbsoluteDurationLimit");
                                        if ($tempVal) {
                                                $ioAct->setAttemptAbDur($tempVal);
                                        }
                        
                               // Look for 'attemptExperiencedDurationLimit'
                                $tempVal=$curNode->getAttribute("attemptExperiencedDurationLimit");
                                        if ($tempVal) {
                                        $ioAct->setAttemptExDur($tempVal);
                                        }
        
                       // Look for 'activityAbsoluteDurationLimit'
                                $tempVal=$curNode->getAttribute("activityAbsoluteDurationLimit");
                                        if ($tempVal) {
                                                $ioAct->setActivityAbDur($tempVal);
                                        }
                                   
                                        // Look for 'activityExperiencedDurationLimit'
                                        $tempVal=$curNode->getAttribute("activityExperiencedDurationLimit");
                                        if ($tempVal) {
                                        $ioAct->setActivityExDur($tempVal);
                                        }
                        
                       // Look for 'beginTimeLimit'
                                        $tempVal=$curNode->getAttribute("beginTimeLimit");
                                        if ($tempVal) {
                                                $ioAct->setBeginTimeLimit($tempVal);
                                        }
                                        
                                        // Look for 'endTimeLimit'
                        $tempVal=$curNode->getAttribute("endTimeLimit");
                                        if ($tempVal) {
                                                $ioAct->setEndTimeLimit($tempVal);
                                        }
                                }
                                else if ($curNode->localName == "auxiliaryResources") {
                                        $ioAct = self::getAuxResources($curNode, $ioAct);
                                }
                                
                                else if ($curNode->localName == "rollupRules") {
                                        $ioAct = self::getRollupRules($curNode, $ioAct);
                                }
                                
                                else if ($curNode->localName == "objectives" && $curNode->namespaceURI == "http://www.imsglobal.org/xsd/imsss") {
                                        $ioAct = self::getObjectives($curNode,$ioAct);
                                }
                                
                        else if ($curNode->localName == "objectives" && $curNode->namespaceURI == "http://www.adlnet.org/xsd/adlseq_v1p3") {
                                        $ioAct = self::getADLSEQObjectives($curNode,$ioAct);
                                }
                                else if ($curNode->localName == "randomizationControls") {
                                        
                                        // Look for 'randomizationTiming'
                        $tempVal=$curNode->getAttribute("randomizationTiming");
                                        if ($tempVal) {
                                                $ioAct->setRandomTiming($tempVal);
                                        }
                                        
                                        // Look for 'selectCount'
                                        $tempVal=$curNode->getAttribute("selectCount");
                                        if ($tempVal) {
                                                $ioAct->setSelectCount($tempVal);
                                        }
                                        
                                        // Look for 'reorderChildren'
                        $tempVal=$curNode->getAttribute("reorderChildren");
                                        if ($tempVal) {
                                                $ioAct->setReorderChildren(self::convert_to_bool($tempVal));
                                        }
                                        
                                        // Look for 'selectionTiming'
                        $tempVal=$curNode->getAttribute("selectionTiming");
                                        if ($tempVal) {
                                $ioAct->setSelectionTiming($tempVal);
                                        }
                                }
                                else if ($curNode->localName == "deliveryControls") {
                                        
                                        // Look for 'tracked'
                                        $tempVal=$curNode->getAttribute("tracked");
                                        if ($tempVal) {
                                                $ioAct->setIsTracked(self::convert_to_bool($tempVal));
                                        }
                        
                       // Look for 'completionSetByContent'
                                        $tempVal=$curNode->getAttribute("completionSetByContent");
                                        if ($tempVal) {
                                                $ioAct->setSetCompletion(self::convert_to_bool($tempVal));
                                        }
                      
                                        // Look for 'objectiveSetByContent'
                                        $tempVal=$curNode->getAttribute("objectiveSetByContent");
                                        if ($tempVal) {
                                                $ioAct->setSetObjective(self::convert_to_bool($tempVal));
                                        }
                                }       
                    else if ($curNode->localName == "constrainedChoiceConsiderations") {
                                        
                                        // Look for 'preventActivation'
                        $tempVal=$curNode->getAttribute("preventActivation");
                                        if ($tempVal) {
                                                $ioAct->setPreventActivation(self::convert_to_bool($tempVal));
                                        }
                                        
                                        // Look for 'constrainChoice'
                        $tempVal=$curNode->getAttribute("constrainChoice");
                                        if ($tempVal) {
                                                $ioAct->setConstrainChoice(self::convert_to_bool($tempVal));
                                        }
                                }       
                                else if ($curNode->localName == "rollupConsiderations") {
                                
                                        // Look for 'requiredForSatisfied'
                                        $tempVal=$curNode->getAttribute("requiredForSatisfied");
                                        if ($tempVal) {
                                                $ioAct->setRequiredForSatisfied($tempVal);
                                        }
                                        
                                        // Look for 'requiredForNotSatisfied'
                                        $tempVal=$curNode->getAttribute("requiredForNotSatisfied");
                                        if ($tempVal) {
                                                $ioAct->setRequiredForNotSatisfied($tempVal);
                                        }
                                        
                                        // Look for 'requiredForCompleted'
                        $tempVal=$curNode->getAttribute("requiredForCompleted");
                                        if ($tempVal) {
                                                $ioAct->setRequiredForCompleted($tempVal);
                                        }
                                        
                                        // Look for 'requiredForIncomplete'
                        $tempVal=$curNode->getAttribute("requiredForIncomplete");
                                        if ($tempVal) {
                                $ioAct->setRequiredForIncomplete($tempVal);
                                        }
                                
                                   // Look for 'measureSatisfactionIfActive'
                                        $tempVal=$curNode->getAttribute("measureSatisfactionIfActive");
                                        if ($tempVal) {
                                                $ioAct->setSatisfactionIfActive(self::convert_to_bool($tempVal));
                                        }
                                }       
                                
                                
                                
                }  //end note-type check
                
                } //end for-loop
                 
                return $ioAct;
          }
        
        
        public static function getObjectives ($iNode,$ioAct) {
                global $ilLog;
                
                
                $ok = true;
            $tempVal = null;
            $objectives = array();
                $children = $iNode->childNodes;
                for ($i = 0; $i < $children->length; $i++ ) {
                        $curNode=$children->item($i);
                        if ($curNode->nodeType == XML_ELEMENT_NODE) {
                                if ($curNode->localName == "primaryObjective" || $curNode->localName == "objective" ) {
                
                                        $obj = new SeqObjective();
                                        if ($curNode->localName == "primaryObjective") { 
                                $obj->mContributesToRollup = true;
                                        }
                                        
                        // Look for 'objectiveID'
                                        $tempVal = preg_replace('/(%20)+/', ' ', trim($curNode->getAttribute("objectiveID")));
                                        if($tempVal) {
                                                $obj->mObjID = $tempVal;
                        }

                                        // Look for 'satisfiedByMeasure'
                        $tempVal = $curNode->getAttribute("satisfiedByMeasure");
                                        if($tempVal) {
                                                $obj->mSatisfiedByMeasure = self::convert_to_bool($tempVal);
                        }
                                        // Look for 'minNormalizedMeasure'
                                        $tempVal=self::lookupElement($curNode,"minNormalizedMeasure");
                        if($tempVal) {
                                                $obj->mMinMeasure = $tempVal;
                        }
                                
                                        //get ObjectiveMaps
                                        $maps = self::getObjectiveMaps($curNode);
                                        if ( $maps != null ){
                                                $obj->mMaps = $maps;
                        }
                                        //$obj->mContributesToRollup = true;
                                        //add class
                                        $c_obj['_SeqObjective'] = $obj;
                                        array_push($objectives,$c_obj);
               }
                        }
                }
                $ioAct->setObjectives($objectives);
        return $ioAct;
        }
        
        public static function getADLSEQObjectives ($iNode,$ioAct) {
                global $ilLog;
                $objectives = $ioAct->mObjectives;
                $children = $iNode->childNodes;
                for ($i = 0; $i < $children->length; $i++ ) {
                        $curNode=$children->item($i);
                        if ($curNode->nodeType == XML_ELEMENT_NODE) {
                                if ($curNode->localName == "objective" ) {
                                        // get the objectiveID
                                        $adlseqobjid = preg_replace('/(%20)+/', ' ', trim($curNode->getAttribute("objectiveID")));
                                        
                                        // find the imsss objective with the same objectiveID
                                        $curseqobj = null;
                                        for ( $j = 0; $j < count($objectives); $j++ ){
                                                $seqobj = $objectives[$j]['_SeqObjective'];
                                                if ( $seqobj->mObjID == $adlseqobjid ){
                                                        $curseqobj = $seqobj;
                                                        $curseqobjindex = $j;
                                                        break;
                                                }                       
                                        }
                                        
                                        // if there's a current seq then let's add the maps
                                        if ( $curseqobj != null ){
                                                //  for each adlseq map info populate that mMaps with map info in the adlseq objective
                                                $curseqobj = self::getADLSeqMaps($curNode, $curseqobj);
                                                $seqobj = $curseqobj;
                                                $objectives[$curseqobjindex]['_SeqObjective'] = $seqobj;
                                        }
                                        
                                }
                        }
                }
                // before i leave what do i have to duplicate in SeqActivity or some other class?
                // prolly just 
                $ioAct->setObjectives($objectives); 
                return $ioAct;
        }
        
        public static function getADLSeqMaps($iNode, $curseqobj){
                if (count($curseqobj->mMaps)==null) $curseqobj->mMaps = array();
                $maps = $curseqobj->mMaps;

                $children = $iNode->childNodes;
                for ($i = 0; $i < $children->length; $i++ ) {
                        $curNode=$children->item($i);
                        if ($curNode->nodeType == XML_ELEMENT_NODE) {
                                if ($curNode->localName == "mapInfo") {
                                        $map = new SeqObjectiveMap();
                                        $curadltargetobjid = preg_replace('/(%20)+/', ' ', trim($curNode->getAttribute("targetObjectiveID")));
                                        // if the adl map target id matches an imsssssss one, then add to the imsssss one
                                        $matchingmapindex = -1;
                                        for ( $j = 0; $j < count($maps); $j++ ){
                                                if ($maps[$j]['_SeqObjectiveMap']->mGlobalObjID == $curadltargetobjid){
                                                        $map = $maps[$j]['_SeqObjectiveMap'];
                                                        $matchingmapindex = $j;
                                                }
                                        }
// tom: if default access is dependent on map existence then this will need to know if an imsss:mapInfo existed                                 
                                        $map = self::fillinADLSeqMaps($curNode, $map);
                                        
                                        if ( $matchingmapindex > -1 ){
                                                $c_map['_SeqObjectiveMap']=$map;
                                                $maps[$matchingmapindex] = $c_map;
                                        }
                                        else{
                                $c_map['_SeqObjectiveMap']=$map;
                                array_push($maps, $c_map);
                                        }
                                }
                        }
                }
                $curseqobj->mMaps = $maps;
                return $curseqobj;
        }
        
        public static function fillinADLSeqMaps($iNode, $map){
                                
                if($map->mGlobalObjID == null) $map->mGlobalObjID = preg_replace('/(%20)+/', ' ', trim($iNode->getAttribute("targetObjectiveID")));

                $tempVal = $iNode->getAttribute("readRawScore");
                if($tempVal) {
                        $map->mReadRawScore = self::convert_to_bool($tempVal);
        }

                $tempVal = $iNode->getAttribute("readMinScore");
                if($tempVal) {
                        $map->mReadMinScore = self::convert_to_bool($tempVal);
        }
        
                $tempVal = $iNode->getAttribute("readMaxScore");
                if($tempVal) {
                        $map->mReadMaxScore = self::convert_to_bool($tempVal);
        }
        
                $tempVal = $iNode->getAttribute("readCompletionStatus");
                if($tempVal) {
                        $map->mReadCompletionStatus = self::convert_to_bool($tempVal);
        }
        
                $tempVal = $iNode->getAttribute("readProgressMeasure");
                if($tempVal) {
                        $map->mReadProgressMeasure = self::convert_to_bool($tempVal);
        }
        
                $tempVal = $iNode->getAttribute("writeRawScore");
                if($tempVal) {
                        $map->mWriteRawScore = self::convert_to_bool($tempVal);
        }

                $tempVal = $iNode->getAttribute("writeMinScore");
                if($tempVal) {
                        $map->mWriteMinScore = self::convert_to_bool($tempVal);
        }
        
                $tempVal = $iNode->getAttribute("writeMaxScore");
                if($tempVal) {
                        $map->mWriteMaxScore = self::convert_to_bool($tempVal);
        }
        
                $tempVal = $iNode->getAttribute("writeCompletionStatus");
                if($tempVal) {
                        $map->mWriteCompletionStatus = self::convert_to_bool($tempVal);
        }
        
                $tempVal = $iNode->getAttribute("writeProgressMeasure");
                if($tempVal) {
                        $map->mWriteProgressMeasure = self::convert_to_bool($tempVal);
        }
        
        return $map;
        }
        
        public static function getObjectiveMaps($iNode) {
                $tempVal = null;
            $maps = array();
                $children = $iNode->childNodes;
                for ($i = 0; $i < $children->length; $i++ ) {
                        $curNode=$children->item($i);
                        if ($curNode->nodeType == XML_ELEMENT_NODE) {
                                if ($curNode->localName == "mapInfo") {
                                         $map = new SeqObjectiveMap();
                                        
                                        // Look for 'targetObjectiveID'
                         $tempVal = preg_replace('/(%20)+/', ' ', trim($curNode->getAttribute("targetObjectiveID")));
                                         if($tempVal) {
                                                $map->mGlobalObjID = $tempVal;
                             }
                
                           // Look for 'readSatisfiedStatus'
                                $tempVal = $curNode->getAttribute("readSatisfiedStatus");
                                        if($tempVal) {
                                                $map->mReadStatus = self::convert_to_bool($tempVal);
                            }
                
                                        // Look for 'readNormalizedMeasure'
                                        $tempVal = $curNode->getAttribute("readNormalizedMeasure");
                                        if($tempVal) {
                                                $map->mReadMeasure = self::convert_to_bool($tempVal);
                                }
                        
                               // Look for 'writeSatisfiedStatus'
                                $tempVal = $curNode->getAttribute("writeSatisfiedStatus");
                                        if($tempVal) {
                                                $map->mWriteStatus = self::convert_to_bool($tempVal);
                                }
                        
                               // Look for 'writeNormalizedMeasure'
                                $tempVal = $curNode->getAttribute("writeNormalizedMeasure");
                                        if($tempVal) {
                                                $map->mWriteMeasure = self::convert_to_bool($tempVal);
                                }
                        //add class
                                        $c_map['_SeqObjectiveMap']=$map;
                                        array_push($maps,$c_map);
                                }
                        }
                }       
                if (count($maps)==null) {
                        $maps = null;
                }
                return $maps;
        }
        
        public static function getRollupRules($iNode, $ioAct) {
                $ok = true;
                $tempVal = null;
                $rollupRules = array();
                
                // Look for 'rollupObjectiveSatisfied'
        $tempVal = $iNode->getAttribute("rollupObjectiveSatisfied");
                if($tempVal) {
                        $ioAct->setIsObjRolledUp(self::convert_to_bool($tempVal));
                }
                
      // Look for 'objectiveMeasureWeight'
        $tempVal = $iNode->getAttribute("objectiveMeasureWeight");
        if($tempVal) {
                        $ioAct->setObjMeasureWeight($tempVal);
        
                }
                // Look for 'rollupProgressCompletion'
        $tempVal = $iNode->getAttribute("rollupProgressCompletion");
                if($tempVal) {
                        $ioAct->setIsProgressRolledUp(self::convert_to_bool($tempVal));
                        
                }
                $children = $iNode->childNodes;
                for ($i = 0; $i < $children->length; $i++ ) {
                        $curNode=$children->item($i);
                        if ($curNode->nodeType == XML_ELEMENT_NODE) {
                                if ($curNode->localName == "rollupRule") {
                                        $rule = new SeqRollupRule();
                        
                                        // Look for 'childActivitySet'
                        $tempVal=$curNode->getAttribute("childActivitySet");
                                if($tempVal) {
                                                $rule->mChildActivitySet = $tempVal;
                                }
                                        // Look for 'minimumCount'
                        $tempVal=$curNode->getAttribute("minimumCount");
                                        if($tempVal) {
                                                        $rule->mMinCount = $tempVal;
                                    }
                                
                                   // Look for 'minimumPercent'
                        $tempVal=$curNode->getAttribute("minimumPercent");
                        if($tempVal) {
                                                        $rule->mMinPercent = $tempVal;
                                    }
                                        $rule->mConditions['_SeqConditionSet'] =  new SeqConditionSet(true);
                            $conditions = array();
                                        $ruleInfo = $curNode->childNodes;
                                        for ($j = 0; $j < $ruleInfo->length; $j++ ) {
                                                $curRule=$ruleInfo->item($j);
                                                //check for element
                                                if ($curRule->nodeType == XML_ELEMENT_NODE) {
                                                  if ($curRule->localName == "rollupConditions") {
                                                        $tempVal = $curRule->getAttribute("conditionCombination");
                                        if($tempVal) {
                                                                $rule->mConditions['_SeqConditionSet']->mCombination = $tempVal;
                                                   } else {
                                                                $rule->mConditions['_SeqConditionSet']->mCombination = COMBINATION_ANY;         
                                                   }
                                                $conds = $curRule->childNodes;
                                                for ($k = 0; $k < $conds->length; $k++ ) {
                                                        $con=$conds->item($k);
                                                        if ($con->nodeType == XML_ELEMENT_NODE) {
                                                                if ($con->localName == "rollupCondition") {
                                                                         $cond =  new SeqCondition();
                                                                         // Look for 'condition'
                                         $tempVal = $con->getAttribute("condition");
                                                                         if($tempVal) {
                                                                                $cond->mCondition=$tempVal;
                                                                         }
                                                                         // Look for 'operator'
                                          $tempVal = $con->getAttribute("operator");
                                                                          if($tempVal) {
                                                                                if($tempVal=='not') {$cond->mNot = true;} else {$cond->mNot = false;}
                                                                          }     
                                                                        //add class
                                                                        $c_cond['_SeqCondition'] = $cond;
                                                                        array_push($conditions,$c_cond);
                                                                }                                                               
                                                        
                                                  }     
                                                }
                                        }       
                                        else if ($curRule->localName == "rollupAction") {
                                                        $tempVal = $curRule->getAttribute("action");
                                                        if ($tempVal) {
                                                                $rule->setRollupAction($tempVal);
                         }
                                                
                                  }
                                
                                }
                           }
                                // Add the conditions to the condition set for the rule
                         $rule->mConditions['_SeqConditionSet']->mConditions = $conditions;

                   // Add the rule to the ruleset
                                //add class 
                                $c_rule['_SeqRollupRule']=$rule;
                                array_push($rollupRules,$c_rule);
                                }
                        }
                }
                 
                if ( $rollupRules != null ) {
                 $rules = new SeqRollupRuleset($rollupRules);
                 // Set the Activity's rollup rules
                         //add class
                         $c_rules['_SeqRollupRuleset']=$rules;
                 $ioAct->setRollupRules($c_rules);
             }

                return $ioAct;
        }
   
   
        public static function getSequencingRules($iNode,$ioAct) {
                //local variables
                $ok = true;
            $tempVal = null;

            $preRules = array();
            $exitRules = array();
            $postRules = array();

                //get children
                $children = $iNode->childNodes;
                
                //find sequencing rules
                 for ($i = 0; $i < $children->length; $i++ ) {
                        $curNode=$children->item($i);
                        if ($curNode->nodeType == XML_ELEMENT_NODE) {
                                if ($curNode->localName == "preConditionRule" || $curNode->localName == "exitConditionRule" || $curNode->localName == "postConditionRule" ) {
                                        $rule = new SeqRule();
                        $ruleInfo = $curNode->childNodes;
                                        for ($j = 0; $j < $ruleInfo->length; $j++ ){
                                                $curRule=$ruleInfo->item($j);
                                                //echo "$curRule->localName\n";
                                                if ($curRule->nodeType == XML_ELEMENT_NODE) { 
                                                        if ($curRule->localName == "ruleConditions") {
                                                                        $rule->mConditions = self::extractSeqRuleConditions($curRule);
                                                        }
                                                        else if($curRule->localName == "ruleAction"){
                                                                $tempVal=$curRule->getAttribute("action");
                                                if($tempVal) {
                                                                        $rule->mAction = $tempVal;
                                    }
                                                        }
                                                        
                                                }
                                        }//end for inner
                        if ( $rule->mConditions != null && $rule->mAction != null ) {
                                                //changed from ADL Code..
                                                if ($curNode->localName == "preConditionRule") {
                                                        //echo "ADD PRE";
                                                        //add class
                                                        $c_rule['_SeqRule'] = $rule;
                                        array_push($preRules,$c_rule);
                                                }
                                                if ($curNode->localName == "exitConditionRule") {
                                                        //echo "ADD EXIT";
                                                        //add class
                                                        $c_rule['_SeqRule'] = $rule;
                                                        array_push($exitRules,$c_rule);
                                                }
                                                if ($curNode->localName == "postConditionRule") {
                                                        //echo "ADD POST";
                                                        //add class
                                                        $c_rule['_SeqRule'] = $rule;
                                        array_push($postRules,$c_rule);
                                                }
                                        }
                                } //end if preCondition
                        
                        }  //end if ELEMENT
                }
                
                if ( count($preRules) > 0 ) {
                 $rules = new SeqRuleset($preRules);
                         //add class
                         $c_rules['_SeqRuleset']=$rules;
                 $ioAct->setPreSeqRules($c_rules);
        
            }
        
                if ( count($exitRules) > 0 ){
                 $rules = new SeqRuleset($exitRules);
                         //add class
                         $c_rules['_SeqRuleset']=$rules;
                 $ioAct->setExitSeqRules($c_rules);
            }
                if ( count($postRules) > 0 ){
                $rules = new SeqRuleset($postRules);
                        //add class
                        $c_rules['_SeqRuleset']=$rules;
                $ioAct->setPostSeqRules($c_rules);
                }
                //echo json_encode($ioAct);
                
                return $ioAct;
                
        }
        
        public static function extractSeqRuleConditions($iNode) {

                $tempVal = null;
            $condSet = new SeqConditionSet(false);

            $conditions = array();
                $tempVal=$iNode->getAttribute("conditionCombination");
                if ($tempVal) {
                        $condSet->mCombination=$tempVal;
                } else {
                        $condSet->mCombination=COMBINATION_ALL;
                }
                $condInfo = $iNode->childNodes;
                for ($i = 0; $i < $condInfo->length; $i++ ) {
                        $curCond=$condInfo->item($i);
                        if ($curCond->nodeType == XML_ELEMENT_NODE) {
                                if ($curCond->localName == "ruleCondition") {
                                        $cond = new SeqCondition();
                                        
                                        //look for condition
                        $tempVal=$curCond->getAttribute("condition");
                                        if ($tempVal) {
                                                $cond->mCondition = $tempVal;
                    }

                       // Look for 'referencedObjective'
                                        $tempVal=preg_replace('/(%20)+/', ' ', trim($curCond->getAttribute("referencedObjective")));
                        if ($tempVal) {
                                                $cond->mObjID = $tempVal;
                                                
                        }
        
                       // Look for 'measureThreshold'
                                        $tempVal=$curCond->getAttribute("measureThreshold");
                                        if ($tempVal) {
                                                $cond->mThreshold = $tempVal;
                            }
                
                           // Look for 'operator'
                                $tempVal = $curCond->getAttribute("operator");
                                        if ($tempVal) {
                                                if ($tempVal == 'not') {
                                                        $cond->mNot = true;
                                                } else {
                                                        $cond->mNot = false;
                                                }
                                        }
                                        
                                        //add class
                                        $c_cond['_SeqCondition']=$cond;
                                        array_push($conditions,$c_cond);
                                        
                                }
                        }       
                }
                
                if (count($conditions)>0) {
                        $condSet->mConditions = $conditions;
                } else {
                        $condSet->mConditions = null;
                }
                //add class
                $c_condSet['_SeqConditionSet']=$condSet;
                return $c_condSet;
        }
   
        public static function getAuxResources($iNode, $ioAct) {
                $ok = true;
            $tempVal = null;
        $auxRes = array();
                //get children
                $children = $iNode->childNodes;

                //find  ressources
                for ($i = 0; $i < $children->length; $i++ ) {
                        $curNode=$children->item($i);
                        if ($curNode->nodeType == XML_ELEMENT_NODE) {
                                if ($curNode->localName == "auxiliaryResource") {
                                        //found it
                                        $res = new ADLAuxiliaryResource();
                                        
                                        // Get the resource's purpose
                        $tempVal=$curNode->getAttribute("purpose");
                                        if ($tempVal) {
                                                $res->mType = $tempVal;
                                }
                               // Get the resource's ID
                                        $tempVal=preg_replace('/(%20)+/', ' ', trim($curNode->getAttribute("auxiliaryResourceID")));
                                        if ($tempVal) {
                                                $res->mResourceID = $tempVal;
                                    }
                                        array_push($auxRes,$res);
                                }
                        }
                }       
                //add class
                $c_auxRes['_ADLAuxiliaryResource']=$auxRes;
                $ioAct->setAuxResources($c_auxRes);
        return $ioAct;
        }
        
          //helper functions
        
          private static function convert_to_bool($string) {
                if (strtoupper($string)=="FALSE") {
                        return false;
                } else {
                        return true;
                }
          }
        
        
          private function lookupElement($iNode, $iElement){
                $value = null;
                $curNode = null;
                $children = null;
                
                if ( $iNode != null && $iElement != null ){
                        $children = $iNode->childNodes;
                        for ($i = 0; $i < $children->length; $i++ ) {
                                $curNode = $children->item($i);
                        if ( ($curNode->nodeType == XML_ELEMENT_NODE)) {
                                        if ($curNode->localName == $iElement) {
                                                break;
                                        }
                                }
            
                        }
                        if ($curNode != null ) {
                                $comp = $curNode->localName;
                                if ($comp != null) {
                                        if ($comp != $iElement) {
                                                $curNode = null;
                                        } 
                                } else {
                                        $curNode = null;
                    
                                }
                        }
         
                }
                else {
                        //$iElement is null
                        $curNode = $iNode;
              }
          
                if ( $curNode != null )
              {
                        $children = $curNode->childNodes;
                if ( $children != null ) {
                                for ($i = 0; $i < $children->length; $i++ ) {
                                        $curNode = $children->item($i);
                                         // make sure we have a 'text' element
                               if ( ($curNode->nodeType == XML_TEXT_NODE) ||($curNode->nodeType == XML_CDATA_SECTION_NODE) )
                               {
                                  $value = $value.$curNode->nodeValue;
                               }
                       }
                        }
              }
                return $value;
          }
          
          
}         //end class
          
?>