Builds the default count query for SearchQuery.

Since SearchQuery always uses GROUP BY, we can default to a subquery. We also add the same conditions as execute() because countQuery() is called first.

Overrides SelectQueryExtender::countQuery

File

drupal-7.x/modules/search/search.extender.inc, line 513

Search query extender and helper functions.

Class

SearchQuery

Do a query on the full-text search index for a word or words.

Code

public function countQuery() {
  // Clone the inner query.
  $inner = clone $this->query;

  // Add conditions to query.
  $inner->join('search_dataset', 'd', 'i.sid = d.sid AND i.type = d.type');
  $inner->condition($this->conditions);

  // Remove existing fields and expressions, they are not needed for a count
  // query.
  $fields = &$inner->getFields();
  $fields = array();
  $expressions = &$inner->getExpressions();
  $expressions = array();

  // Add the sid as the only field and count them as a subquery.
  $count = db_select($inner->fields('i', array('sid')), NULL, array('target' => 'slave'));

  // Add the COUNT() expression.
  $count->addExpression('COUNT(*)');

  return $count;
}