function initializeMultiPageXML()
{
#
# Check for files uploaded prior to DJVU support activation
# They have a '0' in their metadata field.
#
if ($this->metadata == '0' || $this->metadata == '') {
$deja = new DjVuImage($this->imagePath);
$this->metadata = $deja->retrieveMetaData();
$this->purgeMetadataCache();
# Update metadata in the database
$dbw =& wfGetDB(DB_MASTER);
$dbw->update('image', array('img_metadata' => $this->metadata), array('img_name' => $this->name), __METHOD__);
}
wfSuppressWarnings();
$this->multiPageXML = new SimpleXMLElement($this->metadata);
wfRestoreWarnings();
}
