class.ilXmlExporter.php

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

abstract class ilXmlExporter
{
        protected $dir_relative;
        protected $dir_absolute;

        public function __construct()
        {

        }

        public static function lookupExportDirectory($a_obj_type, $a_obj_id, $a_export_type = 'xml', $a_entity = "")
        {
                $ent = ($a_entity == "")
                        ? ""
                        : "_".$a_entity;
                        
                if($a_export_type == 'xml')
                {
                        return ilUtil::getDataDir()."/".$a_obj_type.$ent."_data"."/".$a_obj_type."_".$a_obj_id."/export";
                }
                return ilUtil::getDataDir()."/".$a_obj_type.$ent."_data"."/".$a_obj_type."_".$a_obj_id."/export_".$a_export_type;
        }

        abstract public function getXmlRepresentation($a_entity, $a_schema_version, $a_id);

        abstract public function init();


        public function setExportDirectories($a_dir_relative, $a_dir_absolute)
        {
                $this->dir_relative = $a_dir_relative;
                $this->dir_absolute = $a_dir_absolute;
        }

        public function getRelativeExportDirectory()
        {
                return $this->dir_relative;
        }

        public function getAbsoluteExportDirectory()
        {
                return $this->dir_absolute;
        }

        public function getXmlExportHeadDependencies($a_entity, $a_target_release, $a_ids)
        {
                return array();
        }

        public function getXmlExportTailDependencies($a_entity, $a_target_release, $a_ids)
        {
                return array();
        }

        abstract public function getValidSchemaVersions($a_entity);

        public final function determineSchemaVersion($a_entity, $a_target_release)
        {
                $svs = $this->getValidSchemaVersions($a_entity);
                $found = false;
                foreach ($svs as $k => $sv)
                {
                        if (!$found)
                        {
                                if (version_compare($sv["min"], ILIAS_VERSION_NUMERIC, "<=")
                                        && ($sv["max"] == "" || version_compare($sv["max"], ILIAS_VERSION_NUMERIC, ">=")))
                                {
                                        $rsv = $sv;
                                        $rsv["schema_version"] = $k;
                                        $found = true;
                                }
                        }
                }

                return $rsv;
        }
}
?>