class.ilExportOptions.php

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

class ilExportOptions
{
        private static $instance = null;
        
        const EXPORT_EXISTING = 1;
        const EXPORT_BUILD = 2;
        const EXPORT_OMIT = 3;
        
        const KEY_INIT = 1;
        const KEY_ITEM_MODE = 2;
        const KEY_ROOT = 3;
        
        private $export_id = 0;
        private $ref_options = array();
        private $obj_options = array();
        private $options = array();
        
        private function __construct($a_export_id)
        {
                $this->export_id = $a_export_id;
                $this->read();
        }
        
        public static function getInstance()
        {
                if(self::$instance)
                {
                        return self::$instance;
                }
        }
        
        public static function newInstance($a_export_id)
        {
                return self::$instance = new ilExportOptions($a_export_id);
        }
        
        public static function allocateExportId()
        {
                global $ilDB;
                
                // get last export id
                $query = 'SELECT MAX(export_id) exp FROM export_options '.
                        'GROUP BY export_id ';
                $res = $ilDB->query($query);
                $exp_id = 1;
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $exp_id = $row->exp + 1;
                }
                $query = 'INSERT INTO export_options (export_id,keyword,ref_id,obj_id,value) '.
                        'VALUES( '.
                        $ilDB->quote($exp_id,'integer').', '.
                        $ilDB->quote(self::KEY_INIT,'integer').', '.
                        $ilDB->quote(0,'integer').', '.
                        $ilDB->quote(0,'integer').', '.
                        $ilDB->quote(0,'integer').' '.
                        ')';
                $ilDB->manipulate($query);

                return $exp_id; 
        }
        
        public function getSubitemsForCreation($a_source_id)
        {
                $refs = array();

                foreach((array) $this->ref_options[self::KEY_ITEM_MODE] as $ref_id => $mode)
                {
                        if($mode == self::EXPORT_BUILD)
                        {
                                $refs[] = $ref_id;
                        }
                }
                return $refs;
        }
        
        public function getSubitemsForExport()
        {
                $refs = array();
                foreach((array) $this->ref_options[self::KEY_ITEM_MODE] as $ref_id => $mode)
                {
                        if($mode != self::EXPORT_OMIT)
                        {
                                $refs[] = $ref_id;
                        }
                }
                return $refs;
        }
        
        public function getExportId()
        {
                return $this->export_id;
        }
        
        public function addOption($a_keyword, $a_ref_id, $a_obj_id, $a_value)
        {
                global $ilDB;
                
                $query = "SELECT MAX(pos) position FROM export_options";
                $res = $ilDB->query($query);
                
                $pos = 0;
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $pos = $row->position;
                }
                $pos++;
                
                $query = 'INSERT INTO export_options (export_id,keyword,ref_id,obj_id,value,pos) '.
                        'VALUES( '.
                        $ilDB->quote($this->getExportId(),'integer').', '.
                        $ilDB->quote($a_keyword,'integer').', '.
                        $ilDB->quote($a_ref_id,'integer').', '.
                        $ilDB->quote($a_obj_id,'integer').', '.
                        $ilDB->quote($a_value,'integer').', '.
                        $ilDB->quote($pos,'integer').' '.
                        ')';
                $ilDB->manipulate($query);
        }

        public function getOption($a_keyword)
        {
                return isset($this->options[$a_keyword]) ? $this->options[$a_keyword] : null;
        }
        
        public function getOptionByObjId($a_obj_id,$a_keyword)
        {
                return isset($this->obj_options[$a_keyword][$a_obj_id]) ? $this->obj_options[$a_keyword][$a_obj_id] : null;
        }
        
        public function getOptionByRefId($a_ref_id,$a_keyword)
        {
                return isset($this->ref_options[$a_keyword][$a_ref_id]) ? $this->ref_options[$a_keyword][$a_ref_id] : null;
        }
        
        public function delete()
        {
                global $ilDB;
                
                $query = "DELETE FROM export_options ".
                        "WHERE export_id = ".$ilDB->quote($this->getExportId(),'integer');
                $ilDB->manipulate($query);
                return true;
        }

        public function read()
        {
                global $ilDB;
                
                $this->options = array();
                $this->obj_options = array();
                $this->ref_options = array(); 
                
                $query = "SELECT * FROM export_options ".
                        "WHERE export_id = ".$ilDB->quote($this->getExportId(),'integer').' '.
                        "ORDER BY pos";
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        if($row->ref_id)
                        {
                                $this->ref_options[$row->keyword][$row->ref_id] = $row->value;
                        }
                        if($row->obj_id)
                        {
                                $this->obj_options[$row->keyword][$row->obj_id] = $row->value;
                        }
                        if(!$row->ref_id and !$row->obj_id)
                        {
                                $this->options[$row->keyword] = $row->value;
                        }
                        
                }
                return true;
        }
}
?>