class.ilContainerReferenceExporter.php

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<?php
/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */

include_once './Services/Export/classes/class.ilXmlExporter.php';

abstract class ilContainerReferenceExporter extends ilXmlExporter
{
    public function getXmlExportHeadDependencies($a_entity, $a_target_release, $a_ids)
    {
        include_once './Services/Export/classes/class.ilExportOptions.php';
        $eo = ilExportOptions::getInstance();

        $obj_id = end($a_ids);


        $GLOBALS['ilLog']->write(__METHOD__ . ': ' . $obj_id);
        if ($eo->getOption(ilExportOptions::KEY_ROOT) != $obj_id) {
            return array();
        }
        if (count(ilExportOptions::getInstance()->getSubitemsForExport()) > 1) {
            return array(
                array(
                    'component'         => 'Services/Container',
                    'entity'            => 'struct',
                    'ids'                       => $a_ids
                )
            );
        }
        return array();
    }
    
    abstract protected function initWriter(ilContainerReference $ref);


    public function getXmlRepresentation($a_entity, $a_schema_version, $a_id)
    {
        $ref_ref_id = end(ilObject::_getAllReferences($a_id));
        $ref = ilObjectFactory::getInstanceByRefId($ref_ref_id, false);

        if (!$ref instanceof ilContainerReference) {
            $GLOBALS['ilLog']->write(__METHOD__ . $a_id . ' is not instance of type category!');
            return '';
        }
        $writer = $this->initWriter($ref);
        $writer->setMode(ilContainerReferenceXmlWriter::MODE_EXPORT);
        $writer->export(false);
        return $writer->getXml();
    }

    public function getValidSchemaVersions($a_entity)
    {
        return array(
            "4.3.0" => array(
                "namespace" => "http://www.ilias.de/Modules/CategoryReference/catr/4_3",
                "xsd_file" => "ilias_catr_4_3.xsd",
                "uses_dataset" => false,
                "min" => "4.3.0",
                "max" => "")
        );
    }

    public function init()
    {
    }
}