/**
* Adds a filter parameter.
*
* @param string $filterString The filter to add, in the form of field:value
* @return void
*/
public function addFilter($filterString)
{
// TODO refactor to split filter field and filter value, @see Drupal
if ($this->solrConfiguration->getLoggingQueryFilters()) {
$this->writeDevLog('adding filter', 0, array($filterString));
}
$this->filters[] = $filterString;
}
