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;
    protected $exp;

    public function __construct()
    {
    }

    public function setExport(ilExport $a_exp)
    {
        $this->exp = $a_exp;
    }

    public function getExport()
    {
        return $this->exp;
    }

    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);

    final public 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;
    }
}