/**
* Parses the given statement.
* @return string The SQL statement
*/
public function parse()
{
$where = $order = $group = $limit = $q = '';
$source = $this->parseSource();
if ($this->stmt->getConditions()) {
$where = $this->parseWhere();
}
if ($this->stmt instanceof Result && $this->stmt->getGrouping()) {
$group = $this->parseGrouping();
}
if ($this->stmt->getSorting()) {
$order = $this->parseSorting();
}
$this->clauses = array($source, $where, $group, $order);
if ($this->stmt->getType() === Manager::STMT_SELECT) {
$q = $this->parseSelectStmt();
} elseif ($this->stmt->getType() === Manager::STMT_INSERT) {
$q = $this->parseInsertStmt();
} elseif ($this->stmt->getType() === Manager::STMT_UPDATE) {
$q = $this->parseUpdateStmt();
} elseif ($this->stmt->getType() === Manager::STMT_DELETE) {
$q = $this->parseDeleteStmt();
}
return trim($q);
}
