/**
* Returns an iterator for a select statement
*
* @param rdbms.SQLExpression criteria or statement
* @param bool buffered default TRUE
* @return rdbms.ResultIterator
* @see xp://lang.XPIterator
*/
public function iteratorFor(SQLExpression $criteria, $buffered = true)
{
$jp = $criteria->isJoin() ? new JoinProcessor($this) : null;
$rs = $criteria->executeSelect($this->getConnection(), $this, $jp, $buffered);
// if this is a projection, it does no matter if it's a join or not
if ($criteria->isProjection()) {
return new ResultIterator($rs, 'rdbms\\Record');
}
if ($criteria->isJoin()) {
return $jp->getJoinIterator($rs);
}
return new ResultIterator($rs, $this->identifier);
}
