/**
* Filter the query by a related \testpropel\Book object
*
* @param \testpropel\Book|ObjectCollection $book the related object to use as filter
* @param string $comparison Operator to use for the column comparison, defaults to Criteria::EQUAL
*
* @return ChildPublisherQuery The current query, for fluid interface
*/
public function filterByBook($book, $comparison = null)
{
if ($book instanceof \testpropel\Book) {
return $this->addUsingAlias(PublisherTableMap::COL_ID, $book->getPublisherId(), $comparison);
} elseif ($book instanceof ObjectCollection) {
return $this->useBookQuery()->filterByPrimaryKeys($book->getPrimaryKeys())->endUse();
} else {
throw new PropelException('filterByBook() only accepts arguments of type \\testpropel\\Book or Collection');
}
}
