class.ilAdvancedMDValues.php

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<?php
/* Copyright (c) 1998-2013 ILIAS open source, Extended GPL, see docs/LICENSE */
 
include_once "Services/AdvancedMetaData/classes/class.ilAdvancedMDFieldDefinition.php";         
 
class ilAdvancedMDValues
{
        protected $record_id; // [int]
        protected $obj_id; // [int]
        protected $sub_id; // [int]
        protected $sub_type; // [int]
 
        protected $defs; // [array]
        protected $adt_group; // [ilADTGroup]
        protected $active_record; // [ilADTActiveRecordByType]
                
        protected $disabled; // [array]
        
        protected static $preload_obj_records; // [array]       
        
        public function __construct($a_record_id, $a_obj_id, $a_sub_type = "-", $a_sub_id = 0)
        {
                $this->record_id = (int)$a_record_id;
                $this->obj_id = (int)$a_obj_id;
                $this->sub_type = $a_sub_type ? $a_sub_type : "-";
                $this->sub_id = (int)$a_sub_id;
        }
                
        public static function getInstancesForObjectId($a_obj_id, $a_obj_type = null)
        {
                global $ilDB;
                
                $res = array();
                
                if(!$a_obj_type)
                {
                        $a_obj_type = ilObject::_lookupType($a_obj_id);
                }
        
                // get active records for object type
                $query = "SELECT amro.record_id".
                        " FROM adv_md_record_objs amro".
                        " JOIN adv_md_record amr ON (amr.record_id = amro.record_id)".
                        " WHERE active = ".$ilDB->quote(1, "integer").
                        " AND obj_type = ".$ilDB->quote($a_obj_type, "text");
                $set = $ilDB->query($query);
                while($row = $ilDB->fetchAssoc($set))
                {
                        $res[$row["record_id"]] = new self($row["record_id"], $a_obj_id);
                }                                               
                
                return $res;
        }
        
        public function getDefinitions()
        {
                if(!is_array($this->defs))
                {                       
                        $this->defs = ilAdvancedMDFieldDefinition::getInstancesByRecordId($this->record_id);                                            
                }
                return $this->defs;
        }
        
        public function getADTGroup()
        {               
                if(!$this->adt_group instanceof ilADTGroup)
                {                                                       
                        $this->adt_group = ilAdvancedMDFieldDefinition::getADTGroupForDefinitions($this->getDefinitions());                     
                }
                return $this->adt_group;
        }
        
        protected function getActiveRecord()
        {
                if(!$this->active_record instanceof ilADTActiveRecordByType)
                {
                        include_once "Services/ADT/classes/class.ilADTFactory.php";
                        $factory = ilADTFactory::getInstance();
                        
                        $adt_group_db = $factory->getDBBridgeForInstance($this->getADTGroup());
                                                         
                        $primary = array(
                                "obj_id" => array("integer", $this->obj_id),
                                "sub_type" => array("text", $this->sub_type),
                                "sub_id" => array("integer", $this->sub_id)
                        );
                        $adt_group_db->setPrimary($primary);
                        $adt_group_db->setTable("adv_md_values");
                        
                        // multi-enum fakes single in adv md
                        foreach($adt_group_db->getElements() as $element)
                        {
                                if($element->getADT()->getType() == "MultiEnum")
                                {
                                        $element->setFakeSingle(true);
                                }
                        }               
 
                        $this->active_record = $factory->getActiveRecordByTypeInstance($adt_group_db);
                        $this->active_record->setElementIdColumn("field_id", "integer");
                }
                
                return $this->active_record;
        }
        
        public static function findByObjectId($a_obj_id)
        {
                include_once "Services/ADT/classes/class.ilADTFactory.php";
                ilADTFactory::initActiveRecordByType();
                return ilADTActiveRecordByType::readByPrimary("adv_md_values", array("obj_id"=>array("integer", $a_obj_id)));
        }
        
                
        //
        // disabled
        //
        
        // to set disabled use self::write() with additional data
        
        public function isDisabled($a_element_id)
        {                               
                if(is_array($this->disabled))
                {
                        return in_array($a_element_id, $this->disabled);
                }
        }
        
        
        //
        // CRUD
        // 
        
        public function read()
        {               
                $this->disabled = array();
                
                $tmp = $this->getActiveRecord()->read(true);
                if($tmp)
                {
                        foreach($tmp as $element_id => $data)
                        {
                                if($data["disabled"])
                                {
                                        $this->disabled[] = $element_id;
                                }
                        }
                }
        }
        
        public function write(array $a_additional_data = null)
        {
                $this->getActiveRecord()->write($a_additional_data);
        }
        
        public static function _deleteByFieldId($a_field_id, ilADT $a_adt)
        {               
                ilADTFactory::getInstance()->initActiveRecordByType();  
                ilADTActiveRecordByType::deleteByPrimary(
                        "adv_md_values",
                        array("field_id"=>array("integer", $a_field_id)),
                        $a_adt->getType());             
        }
                
        public static function _deleteByObjId($a_obj_id)
        {        
                ilADTFactory::getInstance()->initActiveRecordByType();  
                ilADTActiveRecordByType::deleteByPrimary(
                        "adv_md_values",
                        array("obj_id"=>array("integer", $a_obj_id)));
        }
        
        
        
        // 
        // substitutions (aka list gui)
        // 
        
        public static function preloadByObjIds(array $a_obj_ids)
        {               
                global $ilDB;
                
                // preload values
                ilADTFactory::getInstance()->initActiveRecordByType();  
                ilADTActiveRecordByType::preloadByPrimary(
                        "adv_md_values",
                        array("obj_id"=>array("integer", $a_obj_ids)));         
                
                
                // preload record ids for object types
                
                self::$preload_obj_records = array();
                
                // get active records for object types
                $query = "SELECT amro.*".
                        " FROM adv_md_record_objs amro".
                        " JOIN adv_md_record amr ON (amr.record_id = amro.record_id)".
                        " WHERE active = ".$ilDB->quote(1, "integer");
                $set = $ilDB->query($query);
                while($row = $ilDB->fetchAssoc($set))
                {
                        self::$preload_obj_records[$row["obj_type"]][] = $row["record_id"];
                }                                               
        }
        
        public static function preloadedRead($a_type, $a_obj_id)
        {
                $res = array();
                
                if(isset(self::$preload_obj_records[$a_type]))
                {               
                        foreach(self::$preload_obj_records[$a_type] as $record_id)
                        {
                                $res[$record_id] = new self($record_id, $a_obj_id);
                                $res[$record_id]->read();
                        }
                }
                
                return $res;
        }
        
                
        //
        // copy/export (import: ilAdvancedMDValueParser)
        //
                        
        public static function _cloneValues($a_source_id,$a_target_id,$a_sub_type = null,$a_source_sub_id = null,$a_target_sub_id=null)
        {
                global $ilLog;
                
                $source_primary = array("obj_id"=>array("integer", $a_source_id));
                $target_primary = array("obj_id"=>array("integer", $a_target_id));
                
                // sub-type support
                if($a_sub_type &&
                        $a_source_sub_id &&
                        $a_target_sub_id)
                {
                        $source_primary["sub_type"] = array("text", $a_sub_type);
                        $source_primary["sub_id"] = array("integer", $a_source_sub_id);
                        $target_primary["sub_type"] = array("text", $a_sub_type);
                        $target_primary["sub_id"] = array("integer", $a_target_sub_id);
                }
                
                ilADTFactory::getInstance()->initActiveRecordByType();  
                $has_cloned = ilADTActiveRecordByType::cloneByPrimary(
                        "adv_md_values",
                        array(
                                "obj_id" => "integer",
                                "sub_type" => "text",
                                "sub_id" => "integer",
                                "field_id" => "integer"
                        ),
                        $source_primary,
                        $target_primary,
                        array("disabled"=>"integer"));          
                
                if(!$has_cloned)
                {
                        $ilLog->write(__METHOD__.': No advanced meta data found.');
                }
                else
                {
                        $ilLog->write(__METHOD__.': Start cloning advanced meta data.');
                }
                return true;            
        }
        
        public static function _appendXMLByObjId(ilXmlWriter $a_xml_writer, $a_obj_id)
        {               
                $a_xml_writer->xmlStartTag('AdvancedMetaData'); 
                        
                self::preloadByObjIds(array($a_obj_id));
                $values_records = self::preloadedRead(ilObject::_lookupType($a_obj_id), $a_obj_id);
                
                foreach($values_records as $values_record)
                {
                        $defs = $values_record->getDefinitions();
                        foreach($values_record->getADTGroup()->getElements() as $element_id => $element)
                        {
                                $def = $defs[$element_id];                              
                                
                                $value = null;
                                if(!$element->isNull())
                                {
                                        $value = $def->getValueForXML($element);
                                }
                                
                                $a_xml_writer->xmlElement(
                                        'Value',
                                        array('id' => $def->getImportId()),
                                        $value
                                );
                        }                                               
                }
                
                $a_xml_writer->xmlEndTag('AdvancedMetaData');   
        }
        
 
        //
        // glossary (might be generic)
        //
 
        static public function queryForRecords($a_obj_id, $a_subtype, $a_records, $a_obj_id_key, $a_obj_subid_key, array $a_amet_filter = null)
        {       
                $result = array();
                
                if (!is_array($a_obj_id))
                {
                        $a_obj_id = array($a_obj_id);
                }
                        
                $sub_obj_ids = array();
                foreach($a_records as $rec)
                {
                        $sub_obj_ids[] = $rec[$a_obj_subid_key];                                                        
                }
                
                // preload adv data for object id(s) 
                ilADTFactory::getInstance()->initActiveRecordByType();
                ilADTActiveRecordByType::preloadByPrimary("adv_md_values", 
                        array(
                                "obj_id" => array("integer", $a_obj_id),
                                "sub_type" => array("text", $a_subtype),
                                "sub_id" => array("integer", $sub_obj_ids)
                        ));
                
                $record_groups = array();
                
                foreach($a_records as $rec)
                {                       
                        $obj_id = $rec[$a_obj_id_key];
                        $sub_id = $rec[$a_obj_subid_key];
                                                
                        // only active amet records for glossary 
                        foreach(ilAdvancedMDRecord::_getSelectedRecordsByObject(ilObject::_lookupType($obj_id), $obj_id, $a_subtype) as $adv_record)
                        {                                                                       
                                $record_id = $adv_record->getRecordId();
                                
                                if(!isset($record_groups[$record_id]))
                                {
                                        $defs = ilAdvancedMDFieldDefinition::getInstancesByRecordId($record_id);
                                        $record_groups[$record_id] = ilAdvancedMDFieldDefinition::getADTGroupForDefinitions($defs);
                                        $record_groups[$record_id] = ilADTFactory::getInstance()->getDBBridgeForInstance($record_groups[$record_id]);
                                        $record_groups[$record_id]->setTable("adv_md_values");                                                          
                                }
                                
                                // prepare ADT group for record id                                                                                                              
                                $record_groups[$record_id]->setPrimary(array(
                                        "obj_id" => array("integer", $obj_id),
                                        "sub_type" => array("text", $a_subtype),
                                        "sub_id" => array("integer", $sub_id)
                                ));
                                
                                // multi-enum fakes single in adv md
                                foreach($record_groups[$record_id]->getElements() as $element)
                                {
                                        if($element->getADT()->getType() == "MultiEnum")
                                        {
                                                $element->setFakeSingle(true);
                                        }
                                }               
                                
                                // read (preloaded) data 
                                $active_record = new ilADTActiveRecordByType($record_groups[$record_id]);       
                                $active_record->setElementIdColumn("field_id", "integer");      
                                $active_record->read();
                                        
                                $adt_group = $record_groups[$record_id]->getADT();                                                                      
                        
                                // filter against amet values
                                if($a_amet_filter)
                                {                                                                               
                                        foreach($a_amet_filter as $field_id => $element)
                                        {                                               
                                                if($adt_group->hasElement($field_id))
                                                {                                                       
                                                        if(!$element->isInCondition($adt_group->getElement($field_id)))
                                                        {                       
                                                                continue(3);
                                                        }
                                                }
                                        }
                                }
                                
                                // add amet values to glossary term record
                                foreach($adt_group->getElements() as $element_id => $element)
                                {
                                        if(!$element->isNull())
                                        {
                                                // we are reusing the ADT group for all $a_records, so we need to clone
                                                $pb = ilADTFactory::getInstance()->getPresentationBridgeForInstance(clone $element);
                                                $rec["md_".$element_id] = $pb->getSortable();
                                                $rec["md_".$element_id."_presentation"] = $pb;
                                                
                                        }
                                        else
                                        {
                                                $rec["md_".$element_id] = null;
                                        }
                                }                                                                                                                                               
                        }
                        
                        $results[] = $rec;      
                }
                
                return $results;
        }
}
 
?>