class.ilObjectDefinition.php

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<?php

/* Copyright (c) 1998-2010 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilObjectDefinition// extends ilSaxParser
{
        var $obj_id;

        var $parent;

        var $obj_data;
        
        var $sub_types = array();

        const MODE_REPOSITORY = 1;
        const MODE_WORKSPACE = 2;
        const MODE_ADMINISTRATION = 3;

        function ilObjectDefinition()
        {
                global $ilias;
                
                $this->readDefinitionData();
                $this->ilias = $ilias;
                
                //parent::ilSaxParser(ILIAS_ABSOLUTE_PATH."/objects.xml");
                
                // removing this line leads to segmentation faults in
                // learning module editor with
                // - PHP 5.2.1, libxml 2.6.22, libxslt 1.1.15 (MacOsX)
                // - PHP 5.2.1, libxml 2.6.31, libxslt 1.1.22 (MacOsX)
                // - PHP 5.2.5, libxml 2.6.31, libxslt 1.1.22 (MacOsX)
                // - PHP 5.2.0-8+etch7, libxml 2.6.27, libxslt 1.1.19
                // - PHP 5.2.0, libxml, libxml 2.6.26, libxslt 1.1.17 (OpenSuse 10.2)
                // (needs further investigation)
                // OK with:
                // - PHP 5.1.2, libxml 2.6.24, libxslt 1.1.15
                
                //
                // Replacing all "=&" with "=" in xml5compliance seems to solve the problem
                //
                
//              $this->startParsing();
        }


        protected function readDefinitionDataFromCache() {
                global $ilPluginAdmin;

                $this->obj_data = array();
                $defIds = array();
                $global_cache = ilCachedComponentData::getInstance();
                foreach ($global_cache->getIlobjectDef() as $rec) {
                        $this->obj_data[$rec["id"]] = array(
                                "name" => $rec["id"],
                                "class_name" => $rec["class_name"],
                                "location" => $rec["location"],
                                "checkbox" => $rec["checkbox"],
                                "inherit" => $rec["inherit"],
                                "component" => $rec["component"],
                                "translate" => $rec["translate"],
                                "devmode" => $rec["devmode"],
                                "allow_link" => $rec["allow_link"],
                                "allow_copy" => $rec["allow_copy"],
                                "rbac" => $rec["rbac"],
                                "group" => $rec["grp"],
                                "system" => $rec["system"],
                                "default_pos" => "9999" . str_pad($rec["default_pos"], 4, "0", STR_PAD_LEFT), // "unassigned" group
                                "sideblock" => $rec["sideblock"],
                                'export' => $rec['export'],
                                'repository' => $rec['repository'],
                                'workspace' => $rec['workspace'],
                                'administration' => $rec['administration'],
                                'amet' => $rec['amet']
                        );
                        $this->obj_data[$rec["id"]]["subobjects"] = array();

                        $defIds[] = $rec["id"];
                }

                $subobj = $global_cache->lookupSubObjForParent($defIds);

                foreach ($subobj as $rec2) {

                        $max = $rec2["mmax"];
                        if ($max <= 0) {
                                $max = "";
                        }
                        $this->obj_data[$rec2["parent"]]["subobjects"][$rec2["subobj"]] = array(
                                "name" => $rec2["subobj"],
                                "max" => $max,
                                "lng" => $rec2["subobj"]
                        );
                }
                $this->obj_group = $global_cache->getIlObjectGroup();

                $pl_names = $ilPluginAdmin->getActivePluginsForSlot(IL_COMP_SERVICE, "Repository", "robj");
                foreach ($pl_names as $pl_name) {
                        include_once("./Services/Component/classes/class.ilPlugin.php");
                        $pl_id = ilPlugin::lookupIdForName(IL_COMP_SERVICE, "Repository", "robj", $pl_name);
                        if ($pl_id != "" && ! isset($this->obj_data[$pl_id])) {
                                include_once("./Services/Repository/classes/class.ilRepositoryObjectPlugin.php");
                                $loc = ilPlugin::_getDirectory(IL_COMP_SERVICE, "Repository", "robj", $pl_name) . "/classes";

                                $this->obj_data[$pl_id] = array(
                                        "name" => $pl_id,
                                        "class_name" => $pl_name,
                                        "plugin" => "1",
                                        "location" => $loc,
                                        "checkbox" => "1",
                                        "inherit" => "0",
                                        "component" => "",
                                        "translate" => "0",
                                        "devmode" => "0",
                                        "allow_link" => "1",
                                        "allow_copy" => "0",
                                        "rbac" => "1",
                                        "group" => NULL,
                                        "system" => "0",
                                        "default_pos" => "99992000", // "unassigned" group
                                        'repository' => '1',
                                        'workspace' => '0',
                                        'administration' => '0',
                                        "sideblock" => "0"
                                );
                                $this->obj_data[$rec["id"]]["subobjects"] = array();

                                // plugins have to be marked as such - see ilContainerGUI::showPossibleSubObjects()
                                $this->obj_data["crs"]["subobjects"][$pl_id] = array( "name" => $pl_id, "max" => "", "lng" => $pl_id, "plugin" => true );
                                $this->obj_data["fold"]["subobjects"][$pl_id] = array( "name" => $pl_id, "max" => "", "lng" => $pl_id, "plugin" => true );
                                $this->obj_data["grp"]["subobjects"][$pl_id] = array( "name" => $pl_id, "max" => "", "lng" => $pl_id, "plugin" => true );
                                $this->obj_data["cat"]["subobjects"][$pl_id] = array( "name" => $pl_id, "max" => "", "lng" => $pl_id, "plugin" => true );
                                $this->obj_data["root"]["subobjects"][$pl_id] = array( "name" => $pl_id, "max" => "", "lng" => $pl_id, "plugin" => true );
                        }
                }

                $this->sub_types = $global_cache->getIlObjectSubType();
        }


        protected function readDefinitionDataFromDB() {
                global $ilDB, $ilPluginAdmin;

                $this->obj_data = array();

                // Select all object_definitions and collect the definition id's in
                // this array.
                $defIds = array();
                $set = $ilDB->query("SELECT * FROM il_object_def");
                while ($rec = $ilDB->fetchAssoc($set)) {
                        $this->obj_data[$rec["id"]] = array(
                                "name" => $rec["id"],
                                "class_name" => $rec["class_name"],
                                "location" => $rec["location"],
                                "checkbox" => $rec["checkbox"],
                                "inherit" => $rec["inherit"],
                                "component" => $rec["component"],
                                "translate" => $rec["translate"],
                                "devmode" => $rec["devmode"],
                                "allow_link" => $rec["allow_link"],
                                "allow_copy" => $rec["allow_copy"],
                                "rbac" => $rec["rbac"],
                                "group" => $rec["grp"],
                                "system" => $rec["system"],
                                "default_pos" => "9999" . str_pad($rec["default_pos"], 4, "0", STR_PAD_LEFT), // "unassigned" group
                                "sideblock" => $rec["sideblock"],
                                'export' => $rec['export'],
                                'repository' => $rec['repository'],
                                'workspace' => $rec['workspace'],
                                'administration' => $rec['administration'],
                                'amet' => $rec['amet']
                        );
                        $this->obj_data[$rec["id"]]["subobjects"] = array();

                        $defIds[] = $rec["id"];
                }

                // get all subobject definitions in a single query
                $set2 = $ilDB->query("SELECT * FROM il_object_subobj WHERE " . $ilDB->in('parent', $defIds, false, 'text'));
                while ($rec2 = $ilDB->fetchAssoc($set2)) {
                        $max = $rec2["mmax"];
                        if ($max <= 0) // for backward compliance
                        {
                                $max = "";
                        }
                        $this->obj_data[$rec2["parent"]]["subobjects"][$rec2["subobj"]] = array(
                                "name" => $rec2["subobj"],
                                "max" => $max,
                                "lng" => $rec2["subobj"]
                        );
                }

                $set = $ilDB->query("SELECT * FROM il_object_group");
                $this->obj_group = array();
                while ($rec = $ilDB->fetchAssoc($set)) {
                        $this->obj_group[$rec["id"]] = $rec;
                }

                // now get objects from repository plugin
                $pl_names = $ilPluginAdmin->getActivePluginsForSlot(IL_COMP_SERVICE, "Repository", "robj");
                foreach ($pl_names as $pl_name) {
                        include_once("./Services/Component/classes/class.ilPlugin.php");
                        $pl_id = ilPlugin::lookupIdForName(IL_COMP_SERVICE, "Repository", "robj", $pl_name);
                        if ($pl_id != "" && ! isset($this->obj_data[$pl_id])) {
                                include_once("./Services/Repository/classes/class.ilRepositoryObjectPlugin.php");
                                $loc = ilPlugin::_getDirectory(IL_COMP_SERVICE, "Repository", "robj", $pl_name) . "/classes";

                                $this->obj_data[$pl_id] = array(
                                        "name" => $pl_id,
                                        "class_name" => $pl_name,
                                        "plugin" => "1",
                                        "location" => $loc,
                                        "checkbox" => "1",
                                        "inherit" => "0",
                                        "component" => "",
                                        "translate" => "0",
                                        "devmode" => "0",
                                        "allow_link" => "1",
                                        "allow_copy" => "0",
                                        "rbac" => "1",
                                        "group" => NULL,
                                        "system" => "0",
                                        "default_pos" => "99992000", // "unassigned" group
                                        'repository' => '1',
                                        'workspace' => '0',
                                        'administration' => '0',
                                        "sideblock" => "0"
                                );
                                $this->obj_data[$rec["id"]]["subobjects"] = array();

                                // plugins have to be marked as such - see ilContainerGUI::showPossibleSubObjects()
                                $this->obj_data["crs"]["subobjects"][$pl_id] = array( "name" => $pl_id, "max" => "", "lng" => $pl_id, "plugin" => true );
                                $this->obj_data["fold"]["subobjects"][$pl_id] = array( "name" => $pl_id, "max" => "", "lng" => $pl_id, "plugin" => true );
                                $this->obj_data["grp"]["subobjects"][$pl_id] = array( "name" => $pl_id, "max" => "", "lng" => $pl_id, "plugin" => true );
                                $this->obj_data["cat"]["subobjects"][$pl_id] = array( "name" => $pl_id, "max" => "", "lng" => $pl_id, "plugin" => true );
                                $this->obj_data["root"]["subobjects"][$pl_id] = array( "name" => $pl_id, "max" => "", "lng" => $pl_id, "plugin" => true );
                        }
                }
                //var_dump($this->obj_data["root"]["subobjects"]);
                //var_dump($this->obj_data2["root"]);

                $set = $ilDB->query("SELECT * FROM il_object_sub_type ");
                $this->sub_types = array();
                while ($rec = $ilDB->fetchAssoc($set)) {
                        $this->sub_types[$rec["obj_type"]][] = $rec;
                }
        }

                
        function readDefinitionData()
        {
                if(ilGlobalCache::getInstance(ilGlobalCache::COMP_COMPONENT)->isActive()) {
                        $this->readDefinitionDataFromCache();
                } else {
                        $this->readDefinitionDataFromDB();
                }
        }
        
        
// PUBLIC METHODS

        function getClassName($a_obj_name)
        {
                return $this->obj_data[$a_obj_name]["class_name"];
        }


        function getLocation($a_obj_name)
        {
                return $this->obj_data[$a_obj_name]["location"];
        }

        function getGroup($a_id)
        {
                return $this->obj_group[$a_id];
        }

        function getGroupOfObj($a_obj_name)
        {
                return $this->obj_data[$a_obj_name]["group"];
        }

        function hasCheckbox($a_obj_name)
        {
                return (bool) $this->obj_data[$a_obj_name]["checkbox"];
        }
        
        function getTranslationType($a_obj_name)
        {
                global $ilDB;
                
                if ($a_obj_name == "root")
                {
                        if (!isset($this->root_trans_type))
                        {
                                $q = "SELECT count(obj_id) cnt FROM object_translation WHERE obj_id = ".
                                        $ilDB->quote(ROOT_FOLDER_ID,'integer')." ";
                                $set = $ilDB->query($q);
                                $rec = $set->fetchRow(DB_FETCHMODE_ASSOC);
                                if($rec["cnt"] > 0)
                                {
                                        $this->root_trans_type = "db";
                                }
                                else
                                {
                                        $this->root_trans_type = $this->obj_data[$a_obj_name]["translate"];
                                }
                        }
                        return $this->root_trans_type;
                }
                
                if (isset($this->obj_data[$a_obj_name]))
                {
                        return $this->obj_data[$a_obj_name]["translate"];
                }
                
                return "";
        }
        

        function stopInheritance($a_obj_name)
        {
                return (bool) $this->obj_data[$a_obj_name]["inherit"];
        }

        function getDevMode($a_obj_name)
        {
                return (bool) $this->obj_data[$a_obj_name]["devmode"];
        }

        function getDevModeAll()
        {
                $types = array_keys($this->obj_data);
                
                foreach ($types as $type)
                {
                        if ($this->getDevMode($type))
                        {
                                $devtypes[] = $type;
                        }
                }

                return $devtypes ? $devtypes : array();
        }

        function isRBACObject($a_obj_name)
        {
                return (bool) $this->obj_data[$a_obj_name]["rbac"];
        }

        function isPlugin($a_obj_name)
        {
                return (bool) isset($this->obj_data[$a_obj_name]["plugin"]);
        }

        function isPluginTypeName($a_str)
        {
                return (substr($a_str, 0, 1) == "x");
        }

        function getAllRBACObjects()
        {
                $types = array_keys($this->obj_data);
                
                foreach ($types as $type)
                {
                        if ($this->isRBACObject($type))
                        {
                                $rbactypes[] = $type;
                        }
                }

                return $rbactypes ? $rbactypes : array();
        }

        function getAllObjects()
        {
                return array_keys($this->obj_data);
        }

        public function allowLink($a_obj_name)
        {
                return (bool) $this->obj_data[$a_obj_name]["allow_link"];
        }

        public function allowCopy($a_obj_name)
        {
                return (bool) $this->obj_data[$a_obj_name]["allow_copy"];
        }
        
        public function allowExport($a_obj_name)
        {
                return (bool) $this->obj_data[$a_obj_name]['export'];
        }
        
        public function hasLocalRoles($a_obj_type)
        {
                switch($a_obj_type)
                {
                        case 'root':
                                return FALSE;
                                
                        default:
                                return TRUE;
                }
        }
        
        function getSubObjects($a_obj_type,$a_filter = true)
        {
                global $ilSetting;
                
                $subs = array();

                if ($subobjects = $this->obj_data[$a_obj_type]["subobjects"])
                {
                        // Filter some objects e.g chat object are creatable if chat is active
                        if ($a_filter)
                        {
                                $this->__filterObjects($subobjects);
                        }
                        foreach ($subobjects as $data => $sub)
                        {
                                if ($sub["module"] != "n")
                                {
                                        if (!($ilSetting->get("obj_dis_creation_".$data)))
                                        {
                                                $subs[$data] = $sub;
                                                
                                                // determine position
                                                $pos = ($ilSetting->get("obj_add_new_pos_".$data) > 0)
                                                        ? (int) $ilSetting->get("obj_add_new_pos_".$data)
                                                        : (int) $this->obj_data[$data]["default_pos"];
                                                $subs[$data]["pos"] = $pos;
                                        }
                                }
                        }

                        $subs2 = ilUtil::sortArray($subs, "pos", ASC, true, true);

                        return $subs2;
                }
                
                return $subs;
        }

        function getSubObjectsRecursively($a_obj_type,$a_include_source_obj = true, $a_add_admin_objects = false)
        {
                global $ilSetting;
                
                // This associative array is used to collect all subobject types.
                // key=>type, value=data
                $recursivesubs = array();

                // This array is used to keep track of the object types, we
                // need to call function getSubobjects() for.
                $to_do = array($a_obj_type);

                // This array is used to keep track of the object types, we
                // have called function getSubobjects() already. This is to
                // prevent endless loops, for object types that support 
                // themselves as subobject types either directly or indirectly.
                $done = array();

                while (count($to_do) > 0)
                {
                        $type = array_pop($to_do);
                        $done[] = $type;
                        
                        // no recovery folder subitems
                        if($type == 'recf')
                        {
                                continue;
                        }
                        
                        // Hide administration if desired
                        if(!$a_add_admin_objects and $type == 'adm')
                        {
                                $subs = array();
                        }
                        else
                        {
                                $subs = $this->getSubObjects($type);
                        }
                        #vd('xxxxxxxxxxxxx'.$type);
                        foreach ($subs as $subtype => $data)
                        {
                                #vd('------------------------->'.$subtype);
                                
                                // Hide role templates and folder from view
                                if($this->getDevMode($subtype) or !$this->isRBACObject($subtype))
                                {
                                        continue;
                                }
                                if($subtype == 'rolt')
                                {
                                        continue;
                                }
                                if(!$a_add_admin_objects and $subtype == 'adm')
                                {
                                        continue;
                                }
                                
                                $recursivesubs[$subtype] = $data;
                                if (! in_array($subtype, $done)
                                && ! in_array($subtype, $to_do))
                                {
                                        $to_do[] = $subtype;
                                }
                        }
                }
                
                if($a_include_source_obj)
                {
                        if(!isset($recursivesubs[$a_obj_type]))
                        {
                                $recursivesubs[$a_obj_type]['name'] = $a_obj_type;
                                $recursivesubs[$a_obj_type]['lng'] = $a_obj_type;
                                $recursivesubs[$a_obj_type]['max'] = 0;
                                $recursivesubs[$a_obj_type]['pos'] = -1;
                        }
                }
                return ilUtil::sortArray($recursivesubs, "pos", ASC, true, true);
        }
        

        function getSubobjectsToFilter($a_obj_type = "adm")
        {
                foreach($this->obj_data[$a_obj_type]["subobjects"] as $key => $value)
                {
                        switch($key)
                        {
                                case "rolf":
                                        // DO NOTHING
                                        break;

                                default:
                                        $tmp_subs[] = $key;
                        }
                }
                // ADD adm and root object
                $tmp_subs[] = "adm";
                #$tmp_subs[] = "root";

                return $tmp_subs ? $tmp_subs : array();
        }
                
        function getCreatableSubObjects($a_obj_type, $a_context = self::MODE_REPOSITORY, $a_parent_ref_id = null)
        {
                $subobjects = $this->getSubObjects($a_obj_type);

                // remove role folder object from list 
                unset($subobjects["rolf"]);
                
                $sub_types = array_keys($subobjects);

                // remove object types in development from list
                foreach ($sub_types as $type)
                {
                        if ($this->getDevMode($type) || $this->isSystemObject($type))
                        {
                                unset($subobjects[$type]);
                        }
                        if ($a_context == self::MODE_REPOSITORY && !$this->isAllowedInRepository($type))
                        {
                                unset($subobjects[$type]);
                        }
                        if ($a_context == self::MODE_WORKSPACE && !$this->isAllowedInWorkspace($type))
                        {
                                unset($subobjects[$type]);
                        }
                        if ($a_context == self::MODE_ADMINISTRATION && !$this->isAdministrationObject($type))
                        {
                                unset($subobjects[$type]);
                        }
                }
                
                if ($a_obj_type == "prg") {
                        // ask study program which objects are allowed to create on the concrete node.
                        require_once("Modules/StudyProgramme/classes/class.ilObjStudyProgramme.php");
                        return ilObjStudyProgramme::getCreatableSubObjects($subobjects, $a_parent_ref_id);
                }

                return $subobjects;
        }
        
        function getSubObjectsAsString($a_obj_type)
        {
                $string = "";

                if (is_array($this->obj_data[$a_obj_type]["subobjects"]))
                {
                        $data = array_keys($this->obj_data[$a_obj_type]["subobjects"]);

                        $string = "'".implode("','", $data)."'";
                }
                
                return $string;
        }
        
        public function isContainer($a_obj_name)
        {
                if(!is_array($this->obj_data[$a_obj_name]['subobjects']))
                {
                        return false;
                }
                return count($this->obj_data[$a_obj_name]['subobjects']) >= 1 ? true : false;
        }

// PRIVATE METHODS

        function setHandlers($a_xml_parser)
        {
                xml_set_object($a_xml_parser,$this);
                xml_set_element_handler($a_xml_parser,'handlerBeginTag','handlerEndTag');
                xml_set_character_data_handler($a_xml_parser,'handlerCharacterData');
        }

        function handlerBeginTag($a_xml_parser,$a_name,$a_attribs)
        {
                switch ($a_name)
                {
                        case 'object':
                                $this->parent_tag_name = $a_attribs["name"];
                                break;
                        case 'property':
                                $this->current_tag = "property";
                                $this->current_tag_name = $a_attribs["name"];
//                              $this->obj_data[$this->parent_tag_name]["properties"][$this->current_tag_name]["name"] = $a_attribs["name"];
                                $this->obj_data[$this->parent_tag_name]["properties"][$this->current_tag_name]["module"] = $a_attribs["module"];
//echo '<br>$this->obj_data["'.$this->parent_tag_name.'"]["properties"]["'.$this->current_tag_name.'"]["module"] = "'.$a_attribs["module"].'";';
                                break;
                }
        }

        function handlerCharacterData($a_xml_parser,$a_data)
        {
        }

        function handlerEndTag($a_xml_parser,$a_name)
        {
                $this->current_tag = '';
                $this->current_tag_name = '';
        }

        
        function __filterObjects(&$subobjects)
        {
                foreach($subobjects as $type => $data)
                {
                        switch($type)
                        {
                                default:
                                        // DO NOTHING
                        }
                }
        }
        
        function isSystemObject($a_obj_name)
        {
                return (bool) $this->obj_data[$a_obj_name]["system"];
        }
        
        function isSideBlock($a_obj_name)
        {
                return (bool) $this->obj_data[$a_obj_name]["sideblock"];
        }

        static function getRepositoryObjectTypesForComponent($a_component_type,
                $a_component_name)
        {
                global $ilDB;

                $set = $ilDB->queryF("SELECT * FROM il_object_def WHERE component = %s",
                        array("text"), array($a_component_type."/".$a_component_name));
                        
                $types = array();
                while($rec = $ilDB->fetchAssoc($set))
                {
                        if ($rec["system"] != 1)
                        {
                                $types[] = $rec;
                        }
                }
                
                return $types;
        }

        static function getComponentForType($a_obj_type)
        {
                global $ilDB;

                $set = $ilDB->queryF("SELECT component FROM il_object_def WHERE id = %s",
                        array("text"), array($a_obj_type));
                        
                if ($rec = $ilDB->fetchAssoc($set))
                {
                        return $rec["component"];
                }
                
                return "";
        }
        
        static function getGroupedRepositoryObjectTypes($a_parent_obj_type)
        {
                global $ilDB, $ilPluginAdmin;
                
                $set = $ilDB->query("SELECT * FROM il_object_group");
                $groups = array();
                while ($gr_rec = $set->fetchRow(DB_FETCHMODE_ASSOC))
                {
                        $groups[$gr_rec["id"]] = $gr_rec;
                }

                $global_cache = ilCachedComponentData::getInstance();


//              if (!is_array($a_parent_obj_type))
//              {
//                      $set = $ilDB->queryF("SELECT il_object_def.* FROM il_object_def, il_object_subobj ".
//                              " WHERE NOT (system = 1) AND NOT (sideblock = 1) AND ".
//                              " parent = %s ".
//                              " AND subobj = id ", array("text"), array($a_parent_obj_type));
//              }
//              else
//              {
//                      $q = "SELECT DISTINCT (id) as sid, il_object_def.* FROM il_object_def, il_object_subobj ".
//                              " WHERE NOT (system = 1) AND NOT (sideblock = 1) AND ".
//                              $ilDB->in("parent", $a_parent_obj_type, false, "text").
//                              " AND subobj = id ";
//                      $set = $ilDB->query($q);
//              }

                $recs = $global_cache->lookupGroupedRepObj($a_parent_obj_type);
                
                $grouped_obj = array();
//              while($rec = $ilDB->fetchAssoc($set))
                foreach((array)$recs as $rec)
                {
                        if ($rec["grp"] != "")
                        {
                                $grouped_obj[$rec["grp"]]["pos"] = (int) $groups[$rec["grp"]]["default_pres_pos"];
                                $grouped_obj[$rec["grp"]]["objs"][] = $rec["id"];
                        }
                        else
                        {
                                $grouped_obj[$rec["id"]]["pos"] = (int) $rec["default_pres_pos"];
                                $grouped_obj[$rec["id"]]["objs"][] = $rec["id"];
                        }
                }
//var_dump($grouped_obj);
                // now get objects from repository plugin
                $pl_names = $ilPluginAdmin->getActivePluginsForSlot(IL_COMP_SERVICE, "Repository", "robj");
                foreach ($pl_names as $pl_name)
                {
                        include_once("./Services/Component/classes/class.ilPlugin.php");
                        $pl_id = ilPlugin::lookupIdForName(IL_COMP_SERVICE, "Repository", "robj", $pl_name);
                        if (!isset($grouped_obj[$pl_id]))
                        {
                                $grouped_obj[$pl_id] = array(
                                        "pos" => "99992000", // "unassigned" group
                                        "objs" => array(0 => $pl_id)
                                        );
                        }
                }

//var_dump($grouped_obj);

                $ret = ilUtil::sortArray($grouped_obj, "pos", "asc", true, true);
//var_dump($ret);
                return $ret;
        }

        function isAllowedInRepository($a_obj_name)
        {
                return (bool) $this->obj_data[$a_obj_name]["repository"];
        }

        function getAllRepositoryTypes($a_incl_adm = false)
        {
                $types = array_keys($this->obj_data);
                
                foreach ($types as $type)
                {
                        if ($this->isAllowedInRepository($type) &&
                                (!$this->isAdministrationObject($type) || $a_incl_adm))
                        {
                                $rbactypes[] = $type;
                        }
                }

                return $rbactypes ? $rbactypes : array();
        }

        
        function isAllowedInWorkspace($a_obj_name)
        {
                return (bool) $this->obj_data[$a_obj_name]["workspace"];
        }

        public function isAdministrationObject($a_obj_name)
        {
                return (bool) $this->obj_data[$a_obj_name]['administration'];
        }
        
        public function isInactivePlugin($a_type)
        {
                if (substr($a_type, 0, 1) == "x" && !$this->isPlugin($a_type))
                {
                        return true;
                }
                return false;
        }
        
        function getAdvancedMetaDataTypes()
        {
                $amet = array();
                foreach ($this->obj_data as $k => $v)
                {
                        if ($v["amet"])
                        {
                                $amet[] = array("obj_type" => $k, "sub_type" => "");
                        }
                }

                foreach ($this->sub_types as $type => $sub_types)
                {
                        foreach ($sub_types as $t)
                        {
                                if ($t["amet"])
                                {
                                        $amet[] = array("obj_type" => $type, "sub_type" => $t["sub_type"]);
                                }
                        }
                }

                return $amet;
        }

        function getPositionByType($a_type)
        {
                global $ilSetting;

                return ($ilSetting->get("obj_add_new_pos_".$a_type) > 0)
                        ? (int) $ilSetting->get("obj_add_new_pos_".$a_type)
                        : (int) $this->obj_data[$a_type]["default_pos"];
        }
        
        public function getPlugins()
        {
                $plugins = array();
                foreach((array) $this->obj_data as $type => $pl_data)
                {
                        if($this->isPlugin($type))
                        {
                                $plugins[$type] = $pl_data;
                        }
                }
                return $plugins;
        }
                
        public function getExplorerContainerTypes()
        {                                               
                $res = $grp_map = $cnt_grp = array();           
                
                // all repository object types
                foreach ($this->getSubObjectsRecursively("root") as $rtype)
                {                               
                        $type = $rtype["name"];
                        
                        // obsolete
                        if($type == "rolf")
                        {
                                continue;
                        }

                        // gather group data
                        $type_grp = $this->getGroupOfObj($type);
                        if($type_grp)
                        {
                                $grp_map[$type_grp][] = $type;
                        }

                        // add basic container types
                        if($this->isContainer($type))
                        {
                                // add to cnt_grp
                                if($type_grp)
                                {
                                        $cnt_grp[] = $type_grp;
                                }

                                $res[] = $type;
                        }
                }
                
                // add complete groups (cat => rcat, catr; crs => rcrs, crsr; ...)
                foreach($cnt_grp as $grp)
                {
                        $res = array_merge($res, $grp_map[$grp]);
                }
                
                // add very special case
                $res[] = "itgr";
                
                return array_unique($res);              
        }

}
?>