/**
* Checks for an expression for a QB defintion
*
* When $expression is an array than it is treated like a QB defintion. A new QB instance will be created and the
* expression will be parsed. Parameters used in the expression will be added to the parents parameterlist.
* When the expression is no array the expression will be returned unchanged.
*
* @param string $expression
* The expression to check for an array with a QB definition
*
* @return string
*/
private function checkSubquery($expression)
{
if (is_array($expression)) {
$qb = new QueryBuilder($expression);
// Build sql string and replace the existing expression with it
$expression = '(' . $qb->build() . ')';
// Add possible params to parents params array
$this->params += $qb->getParams();
}
return $expression;
}
/**
* Run QueryBuilder as definition parser to create a sql query
*
* @param array $definition
* QueryBuilder definition array
* @param bool $autoexec
* Optional flag to autoexecute the created query
*
* @return \PDOStatement
*/
public function qb(array $definition, $autoexec = false)
{
$builder = new QueryBuilder($definition);
// Build sql string
$this->sql = $builder->build();
// Get params
$this->params = $builder->getParams();
return $this->query($autoexec);
}
