class.ilECSUtils.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2006 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. |
        +-----------------------------------------------------------------------------+
*/
 
class ilECSUtils
{
        const TYPE_ARRAY = 1;
        const TYPE_INT = 2;
        const TYPE_STRING = 3;
        const TYPE_TIMEPLACE = 4;
                
        public static function lookupParticipantName($a_owner, $a_server_id)
        {
                global $ilLog;
                
                try {
                        include_once './Services/WebServices/ECS/classes/class.ilECSCommunityReader.php';
                        $reader = ilECSCommunityReader::getInstanceByServerId($a_server_id);
                        if($part = $reader->getParticipantByMID($a_owner))
                        {
                                return $part->getParticipantName();
                        }
                        return '';
                }
                catch(ilECSConnectorException $e)
                {
                        $ilLog->write(__METHOD__.': Error reading participants.');
                        return '';      
                }
        }       
        
        public static function _getOptionalEContentFields()
        {
                // :TODO: ?
                $def = self::getEContentDefinition('/campusconnect/courselinks');
                return array_keys($def);
        }
        
        public static function _getOptionalECourseFields()
        {
                // :TODO: ?
                $def = self::getEContentDefinition('/campusconnect/courselinks');
                return array_keys($def);
        }
 
        public static function getPossibleRemoteTypes($a_with_captions = false)
        {
                global $lng;
                
                $all = array("rcrs", "rcat", "rfil", "rglo", "rgrp", "rlm", "rwik");
                
                if(!$a_with_captions)
                {
                        return $all;                    
                }
                
                $res = array();
                foreach($all as $id)
                {
                        $res[$id] = $lng->txt("obj_".$id);
                }
                return $res;
        }
        
        public static function getPossibleReleaseTypes($a_with_captions = false)
        {
                global $lng;
                
                $all = array("crs", "cat", "file", "glo", "grp", "lm", "wiki");
                
                if(!$a_with_captions)
                {
                        return $all;                    
                }
                
                $res = array();
                foreach($all as $id)
                {
                        $res[$id] = $lng->txt("obj_".$id);
                }
                return $res;
        }
        
        public static function getEContentDefinition($a_resource_id)
        {
                switch($a_resource_id)
                {
                        case '/campusconnect/courselinks':
                                return array(
                                        'study_courses' => self::TYPE_ARRAY, 
                                        'lecturer' => self::TYPE_ARRAY,  
                                        'courseType' => self::TYPE_STRING, 
                                        'courseID' => self::TYPE_INT,
                                        'credits' => self::TYPE_INT, 
                                        'semester_hours' => self::TYPE_INT,
                                        'term' => self::TYPE_STRING,
                                        'begin' => array(self::TYPE_TIMEPLACE, 'timePlace'),
                                        'end' => array(self::TYPE_TIMEPLACE, 'timePlace'),
                                        'room' => array(self::TYPE_TIMEPLACE, 'timePlace'),
                                        'cycle' => array(self::TYPE_TIMEPLACE, 'timePlace')
                                );                              
                                
                        case '/campusconnect/categories':
                        case '/campusconnect/files':
                        case '/campusconnect/glossaries':
                        case '/campusconnect/groups':
                        case '/campusconnect/learningmodules':
                        case '/campusconnect/wikis':                            
                                // no metadata mapping yet
                                return array();                 
                }
        }
        
        public static function getMatchableContent($a_resource_id, $a_server_id, $a_ecs_content, $a_owner)
        {
                include_once './Services/WebServices/ECS/classes/class.ilECSCategoryMappingRule.php';
                include_once './Services/WebServices/ECS/classes/class.ilECSCommunitiesCache.php';
                
                // see ilECSCategoryMapping::getPossibleFields();
                $res = array();
                $res["part_id"] = array($a_owner, ilECSCategoryMappingRule::ATTR_INT);                  
                $res["community"] = array(ilECSCommunitiesCache::getInstance()->lookupTitle($a_server_id, $a_owner),
                        ilECSCategoryMappingRule::ATTR_STRING);         
                
                $definition = self::getEContentDefinition($a_resource_id);      
                
                $timePlace = null;
                foreach($definition as $id => $type)
                {
                        if(is_array($type))
                        {                                       
                                $target = $type[1];
                                $type = $type[0];
                        }
                        else
                        {
                                $target = $id;
                        }                                                                               
                        switch($type)
                        {
                                case ilECSUtils::TYPE_ARRAY:
                                        $value = array(implode(',', (array) $a_ecs_content->$target), ilECSCategoryMappingRule::ATTR_ARRAY);
                                        break;
 
                                case ilECSUtils::TYPE_INT:
                                        $value = array((int)$a_ecs_content->$target, ilECSCategoryMappingRule::ATTR_INT);
                                        break;
 
                                case ilECSUtils::TYPE_STRING:
                                        $value = array((string)$a_ecs_content->$target, ilECSCategoryMappingRule::ATTR_STRING);
                                        break;
 
                                case ilECSUtils::TYPE_TIMEPLACE:                                                
                                        if(!is_object($timePlace))
                                        {
                                                include_once('./Services/WebServices/ECS/classes/class.ilECSTimePlace.php');
                                                if(is_object($a_ecs_content->$target))
                                                {
                                                        $timePlace = new ilECSTimePlace();
                                                        $timePlace->loadFromJSON($a_ecs_content->$target);
                                                }
                                                else
                                                {
                                                        $timePlace = new ilECSTimePlace();
                                                }                                                                                               
                                        }                       
                                        switch($id)
                                        {
                                                case 'begin':
                                                case 'end':                                                     
                                                        $value = array($timePlace->{'getUT'.ucfirst($id)}(),
                                                                ilECSCategoryMappingRule::ATTR_INT);
                                                        break;                                          
                                                        
                                                case 'room':
                                                case 'cycle':
                                                        $value = array($timePlace->{'get'.ucfirst($id)}(),
                                                                ilECSCategoryMappingRule::ATTR_STRING);
                                                        break;
                                        }
                                        break;
                        }                       
                        
                        $res[$id] = $value;
                }
                
                return $res;
        }       
        
        public static function getAdvancedMDValuesForObjId($a_obj_id)
        {
                $res = array();
                
                include_once('Services/AdvancedMetaData/classes/class.ilAdvancedMDValues.php');
                                                                
                // getting all records
                foreach(ilAdvancedMDValues::getInstancesForObjectId($a_obj_id) as $a_values)
                {                                       
                        // this correctly binds group and definitions
                        $a_values->read();
                        
                        // getting elements for record
                        $defs = $a_values->getDefinitions();                                                                    
                        foreach($a_values->getADTGroup()->getElements() as $element_id => $element)                             
                        {                                                               
                                if(!$element->isNull())
                                {                               
                                        // :TODO: using this for a "flat" presentation
                                        $res[$element_id] = $defs[$element_id]->getValueForXML($element);                                                                       
                                }
                                else
                                {
                                        // :TODO: is this needed?
                                        $res[$element_id] = null;
                                }
                        }
                }               
                
                return $res;
        }       
}
 
?>