/**
* Adds discriminator criteria to an already-prepared query.
*
* This method should be used once for query criteria and not be used for
* nested expressions. It should be called before
* {@link DocumentPerister::addFilterToPreparedQuery()}.
*
* @param array $preparedQuery
* @return array
*/
public function addDiscriminatorToPreparedQuery(array $preparedQuery)
{
/* If the class has a discriminator field, which is not already in the
* criteria, inject it now. The field/values need no preparation.
*/
if ($this->class->hasDiscriminator() && !isset($preparedQuery[$this->class->discriminatorField])) {
$discriminatorValues = $this->getClassDiscriminatorValues($this->class);
$preparedQuery[$this->class->discriminatorField] = array('$in' => $discriminatorValues);
}
return $preparedQuery;
}
