/**
* Filter the query by a related Watchlist object
*
* @param Watchlist|PropelObjectCollection $watchlist the related object to use as filter
* @param string $comparison Operator to use for the column comparison, defaults to Criteria::EQUAL
*
* @return ItemQuery The current query, for fluid interface
* @throws PropelException - if the provided filter is invalid.
*/
public function filterByOnWatchlist($watchlist, $comparison = null)
{
if ($watchlist instanceof Watchlist) {
return $this->addUsingAlias(ItemPeer::DATA_ID, $watchlist->getItemId(), $comparison);
} elseif ($watchlist instanceof PropelObjectCollection) {
return $this->useOnWatchlistQuery()->filterByPrimaryKeys($watchlist->getPrimaryKeys())->endUse();
} else {
throw new PropelException('filterByOnWatchlist() only accepts arguments of type Watchlist or PropelCollection');
}
}
