class.ilAdvancedMDValue.php

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<?php

/* Copyright (c) 1998-2013 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilAdvancedMDValue
{
        private static $instances = array();
        
        protected $db;
        
        private $obj_id;
        private $field_id;
        private $value;
        private $disabled = false;

        public function __construct($a_field_id,$a_obj_id = 0, $a_sub_type = "", $a_sub_id = 0)
        {
                global $ilDB;
                
                $this->db = $ilDB;
                
                $this->obj_id = $a_obj_id;
                $this->setSubType($a_sub_type);
                $this->setSubId($a_sub_id);
                $this->field_id = $a_field_id;
                
                $this->read();
        }
        
        public static function _getInstance($a_obj_id,$a_field_id, $a_sub_type = "", $a_sub_id = 0)
        {
                if ($a_sub_type == "")
                {
                        $a_sub_type = "-";
                }
                if(isset(self::$instances[$a_obj_id][$a_field_id][$a_sub_type][$a_sub_id]))
                {
                        return self::$instances[$a_obj_id][$a_field_id][$a_sub_type][$a_sub_id];
                }
                return self::$instances[$a_obj_id][$a_field_id][$a_sub_type][$a_sub_id] = new ilAdvancedMDValue($a_field_id,$a_obj_id, $a_sub_type, $a_sub_id);
        }
        
        public function __toString()
        {
                return $this->value;
        }
        
        public function setObjId($a_obj_id)
        {
                $this->obj_id = $a_obj_id;
        }
        
        function setSubType($a_val)
        {
                if ($a_val == "")
                {
                        $a_val = "-";
                }
                $this->sub_type = $a_val;
        }
        
        function getSubType()
        {
                return $this->sub_type;
        }
        
        function setSubId($a_val)
        {
                $this->sub_id = (int) $a_val;
        }
        
        function getSubId()
        {
                return $this->sub_id;
        }
        
        public function appendXML($xml_writer)
        {
                include_once('Services/AdvancedMetaData/classes/class.ilAdvancedMDFieldDefinition.php');
                
                $xml_writer->xmlElement('Value',
                        array('id' => ilAdvancedMDFieldDefinition::_lookupImportId($this->field_id)),
                        $this->getValue());
        }
        
        
        public function setValue($a_value)
        {
                $this->value = $a_value;
        }
        
        public function getValue()
        {
                return $this->value;
        }
        
        public function isDisabled()
        {
                return (bool) $this->disabled;
        }
        
        public function toggleDisabledStatus($a_status)
        {
                $this->disabled = (bool) $a_status;
        }
        
        public function delete()
        {
                global $ilDB;
                
                $query = "DELETE FROM adv_md_values ".
                        "WHERE obj_id = ".$this->db->quote($this->obj_id ,'integer')." ".
                        "AND sub_type = ".$this->db->quote($this->getSubType() ,'text')." ".
                        "AND sub_id = ".$this->db->quote($this->getSubId() ,'integer')." ".
                        "AND field_id = ".$this->db->quote($this->field_id ,'integer');
                $res = $ilDB->manipulate($query);
        }
        
        public function save()
        {
                global $ilDB;
                
                $this->delete();
                
                $query = "INSERT INTO adv_md_values (obj_id,field_id,sub_type, sub_id, value,disabled) ".
                        "VALUES( ".
                        $this->db->quote($this->obj_id ,'integer').", ".
                        $this->db->quote($this->field_id ,'integer').", ".
                        $this->db->quote($this->getSubType() ,'text').", ".
                        $this->db->quote($this->getSubid() ,'integer').", ".
                        $this->db->quote($this->getValue() ,'text').", ".
                        $ilDB->quote($this->isDisabled(),'integer')." ".
                        ")";
                $res = $ilDB->manipulate($query);
        }
        
        private function read()
        {
                global $ilDB;
                
                if(!$this->obj_id or !$this->field_id)
                {
                        return;
                }
                
                $query = "SELECT * FROM adv_md_values ".
                        "WHERE obj_id = ".$this->db->quote($this->obj_id ,'integer')." ".
                        "AND sub_type = ".$this->db->quote($this->getSubType() ,'text')." ".
                        "AND sub_id = ".$this->db->quote($this->getSubId() ,'integer')." ".
                        "AND field_id = ".$this->db->quote($this->field_id ,'integer')." ";
                $res = $this->db->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $this->setValue($row->value);
                        $this->toggleDisabledStatus((bool) $row->disabled);
                }
                return true;    
        }
}
?>