function changeLang($sLang, $sComment = "", $nTime = null)
{
if ($this->isArchive()) {
throw new AnwUnexpectedException("Can't change the lang of an archive");
}
if (!$this->exists()) {
throw new AnwUnexpectedException("A non existing page can't have it's lang changed");
}
if (!Anwi18n::isValidLang($sLang)) {
throw new AnwBadLangException();
}
if (!$nTime) {
$nTime = time();
}
$sOldLang = $this->sLang;
if ($sLang != $sOldLang && $this->getPageGroup()->hasLang($sLang)) {
throw new AnwLangExistsForPageGroupException();
}
//update some attributes
$this->touchInfos($nTime);
$this->sLang = $sLang;
//get new change ID
$nChangeType = AnwChange::TYPE_PAGE_CHANGELANG;
$sChangeInfo = $sOldLang . " -> " . $sLang;
$oChange = new AnwChange($nChangeType, $this, $nTime, $sComment, $sChangeInfo, "", $sOldLang);
AnwStorage::transactionStart();
try {
//save
AnwStorage::changeLangPage($this, $oChange);
//notify change
$this->notifyChanged();
AnwStorage::transactionCommit();
} catch (AnwException $e) {
AnwStorage::transactionRollback();
throw $e;
}
}
