/**
*
*/
public function add_item(nc_search_query_expression $item)
{
if ($this->field && !$item->get_field()) {
$item->set_field($this->field);
}
$this->items[] = $item;
return $this;
}
/**
* @param nc_search_query_expression $expression
* @param string $fts_query
*/
protected function add_field_matches(nc_search_query_expression $expression, $fts_query)
{
$has_field = $expression->get_field();
if (!$has_field && !$this->implicit_field_match) {
return;
}
// --- EXIT ---
$table_names = $this->get_table_names($expression);
$is_inside_or = $this->is_inside('or');
// prefetch Document_IDs -- this is the fastest way to do this
// type of queries (other ways are subqueries, which are quite slow,
// and FTS match, which won’t use FTS index and therefore slow too)
$id_conditions = array();
$db = $this->get_db();
foreach ($table_names as $table_name) {
if (!$has_field && !$is_inside_or) {
// i.e. regular term which is not optional
// this condition is already in the FTS query
$id_conditions[] = "1";
} else {
$query = "SELECT `Document_ID` FROM `{$table_name}` WHERE MATCH(`Content`) AGAINST ('{$fts_query}' IN BOOLEAN MODE)";
$ids = $db->get_col($query);
$ids = $ids ? join(",", $ids) : "0";
$id_conditions[] = "`{$this->index_table_name}`.`Document_ID` IN ({$ids})";
}
}
$condition = $id_conditions ? "(" . join(" OR ", $id_conditions) . ")" : "0";
$this->query_builder->add_condition($condition);
}