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heavy database optimizions

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git-svn-id: file:///home/jan/tmp/wetterstation/trunk@243 dd492736-c11a-0410-ad51-8c26713eaf7f
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jan
2008-03-20 17:09:11 +00:00
parent cbd3151a56
commit 53e83e9fd4
8 changed files with 117 additions and 83 deletions
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webstuff/frontend/php_inc/modules/hum.inc.php
+6 -19
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@@ -43,8 +43,7 @@ class Hum{
}
function _fetchMinMax(){
$Query = "SELECT max(hum) as max, min(hum) as min FROM ".$this->table." WHERE sens_id=".$this->sensId."";
$Data = $this->connection->fetchQueryResultLine($Query);
$Data = Sensor::get_sensor_extrema($this->sensId, &$this->connection, "hum");
$this->minHum = $Data['min'];
$this->maxHum = $Data['max'];
}
@@ -59,31 +58,19 @@ class Hum{
$this->maxDate = $Data[1]['text_timestamp'];
}
/* liefert den Durchschnittswert in einem bestimmtem Interval */
function _getAverage($interval){
$avQuery = "SELECT avg(hum) as average, count(hum) as count FROM ".$this->table." WHERE sens_id=".$this->sensId." AND timestamp>(current_timestamp - INTERVAL '".$interval."')";
$avData = $this->connection->fetchQueryResultLine($avQuery);
return $avData;
}
/* momentanen Durchschnittswert bestimmen */
function _fetchAverage(){
$avData = array('average'=>0, 'count'=>0); /* Array initialisieren */
$i = 1; /* Laufvariable */
while($avData['count']<5){ /* Schleife prueft, in welchem Interval 5 Werte zusammenkommen */
$i++; /* Laufvariable erhoehen */
$avData = $this->_getAverage(($i*(Config::getAvInterval()))." minutes"); /* Holt Werte mit gegebenem Interval */
}
$Data = Sensor::get_sensor_average($this->sensId, &$this->connection, "hum");
/* Werte den Klassenvariablen zuordnen */
$this->avVal = $avData['average'];
$this->avInter = $i*(Config::getAvInterval());
$this->avVal = $Data['average'];
$this->avInter = $Data['interval'];
}
/* Bestimmt die Tendenz */
function _fetchMoving(){
$shortAvData = $this->_getAverage("15 minutes"); /* Durchschnitt der letzten 15 minuten */
$longAvData = $this->_getAverage("120 minutes"); /* Durchschnitt der letzten 120 Minuten */
$shortAvData = Sensor::get_sensor_extrema($this->sensId, &$this->connection, "hum", 15); /* Durchschnitt der letzten 15 minuten */
$longAvData = Sensor::get_sensor_extrema($this->sensId, &$this->connection, "hum", 120); /* Durchschnitt der letzten 120 Minuten */
if($shortAvData['count'] < 1 || $longAvData['count'] < 2){ /* Wenn in den letzten 5 minuten kein Wert kam oder in den letzten 120 min weniger als 3 Werte kamen */
$this->changing = "Berechnung momentan nicht moeglich"; /* Dann ausgeben, dass momentan nichts berechnet werden kann */
return; /* und aus der Funktion huepfen */