/**
* Log explain of each query in log files after truncating plan_table
* Only if debugExplain wanted and Oracle type database used
*
* @access protected
* @param query $sql
* @see self::execute()
* @link http://www.toutenligne.com/index.php?contenu=sql_explain&menu=sql
*/
function _logExplain($sql)
{
if ($this->_bDebugExplain == true && $this->isOracle()) {
/** TRUNCATE IN ORDER TO CLEAN PLAN_TABLE
CAN BE REMOVED IF NO_WAIT ERRORS **/
$sSQLExplain = "TRUNCATE TABLE PLAN_TABLE";
sqlrcur_sendQuery($this->curs_id, $sSQLExplain);
/** In order to identify connexion file **/
if ($this->_sFileExplainId == '') {
$this->_sFileExplainId = date('Y-m-d H:i:s') . '-' . (microtime() + mt_rand(0, 999));
}
/** In order identify request in explain **/
$iTime = microtime() + mt_rand(0, 999);
/** Calculate execution time of the request on the server **/
list($usec, $sec) = explode(" ", microtime());
$time_Start = (double) $usec + (double) $sec;
/** EXPLAIN QUERY **/
$query = "EXPLAIN PLAN \r\n\t\t SET STATEMENT_ID = '" . $iTime . "' \r\n\t\t FOR " . $sql;
sqlrcur_prepareQuery($this->curs_id, $query);
sqlrcur_executeQuery($this->curs_id);
list($usec, $sec) = explode(" ", microtime());
$time_end = (double) $usec + (double) $sec;
$_elapsedTime += $time_end - $time_Start;
/** GETTING BACK INFORMATIONS **/
$sSQLExplain = "SELECT ID, PARENT_ID, OPERATION, OPTIONS, OBJECT_NAME, OBJECT_TYPE, \r\n\t COST, CARDINALITY, BYTES, OPTIMIZER\r\n FROM PLAN_TABLE\r\n WHERE STATEMENT_ID = '" . $iTime . "'\r\n ORDER BY id, parent_id";
sqlrcur_prepareQuery($this->curs_id, $sSQLExplain);
$iResult = sqlrcur_executeQuery($this->curs_id);
$iNbFirstResult = sqlrcur_rowCount($this->curs_id);
$i = 0;
$aResult = array();
while ($i < $iNbFirstResult) {
$aResult[] = sqlrcur_getRowAssoc($this->curs_id, $i);
$i++;
}
/** Writing in log file **/
$filepath = BASEPATH . '/logs/SQL/Explain/' . $this->_sFileExplainId . '.log';
if (!($fp = @fopen($filepath, "a"))) {
return FALSE;
}
fwrite($fp, str_replace("\n", ' ', $sql) . ' ( ' . round($_elapsedTime, 4) . " sec )\n");
foreach ($aResult as $aExplain) {
$message = $aExplain['ID'] . '|' . $aExplain['PARENT_ID'] . '|' . $aExplain['OPERATION'] . '|' . $aExplain['OPTIONS'] . '|' . $aExplain['OBJECT_NAME'] . '|' . $aExplain['OBJECT_TYPE'] . '|' . $aExplain['COST'] . '|' . $aExplain['CARDINALITY'] . '|' . $aExplain['BYTES'] . '|' . $aExplain['OPTIMIZER'] . "\n";
flock($fp, LOCK_EX);
fwrite($fp, $message);
flock($fp, LOCK_UN);
}
fclose($fp);
@chmod($filepath, 0666);
}
}
function da_sql_fetch_array($result, $config)
{
static $counter = 0;
if ($counter < $result[count]) {
$row = sqlrcur_getRowAssoc($result[cur], $counter);
$counter++;
} else {
$counter = 0;
return false;
}
if ($config[sql_debug] == 'true') {
print "<b>DEBUG(SQL,SQLRELAY DRIVER): Query Result: <pre>";
}
return $row;
}
/**
* Result - associative array
*
* Returns the result set as an array
*
* @access protected
* @return array
*/
function _fetch_array()
{
$aReturn = sqlrcur_getRowAssoc($this->curs_id, $this->current_row);
$this->current_row++;
return $aReturn;
}
