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performance optimizations at the frontend

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git-svn-id: file:///home/jan/tmp/wetterstation/trunk@224 dd492736-c11a-0410-ad51-8c26713eaf7f
This commit is contained in:
losinshi
2007-02-18 15:25:41 +00:00
parent 154280671a
commit 022071a473
8 changed files with 156 additions and 111 deletions
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webstuff/frontend/php_inc/modules/press.inc.php
+42 -27
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@@ -12,49 +12,52 @@ class Press{
var $nowDate; /* datum des letzten Messvorgangs */
var $avVal = "nc"; /* Durchschnittswert */
var $avInter = "nc"; /* Interval des Durchschnittswertes */
var $minPress; /* Minimaler Luftdruck */
var $minDate; /* Datum, wann der Minimale Luftdruck gemessen wurde */
var $maxPress; /* Maximale Luftdruck */
var $maxDate; /* Datum, wann der Max. Luftdruck gemessen wurde */
var $changing = "nc"; /* Tendenz */
var $minPress = "nc"; /* Minimaler Luftdruck */
var $minDate = "nc"; /* Datum, wann der Minimale Luftdruck gemessen wurde */
var $maxPress = "nc"; /* Maximale Luftdruck */
var $maxDate = "nc"; /* Datum, wann der Max. Luftdruck gemessen wurde */
var $changing = "nc"; /* Tendenz */
var $connection;
var $sensId;
var $table;
/* Konstruktor */
function Press($sensId, & $connection){
$this->_fetchPressData($sensId, &$connection);
function Press($sensId, & $connection, $table){
$this->connection = &$connection;
$this->sensId = $sensId;
$this->table = $table;
$this->_fetchPressData();
}
/* Funktion, die die Klasse mit den Weten initialisiert */
function _fetchPressData($sensId, &$connection){
$this->connection = &$connection;
$this->sensId = $sensId;
function _fetchPressData(){
/* Tabelle des Sensors bestimmen */
$tableQuery = "SELECT tabelle FROM sensoren, typen WHERE sensoren.id=".$sensId." AND typen.typ = sensoren.typ";
$table = $connection->fetchQueryResultLine($tableQuery);
$this->table = $table['tabelle'];
/* Aktuelle Luftdruck bestimmen */
$nowQuery = "SELECT press, to_char(timestamp, 'DD.MM.YYYY HH24:MI') as text_timestamp FROM ".$table['tabelle']." WHERE sens_id=".$sensId." ORDER BY timestamp DESC LIMIT 1";
$nowData = $connection->fetchQueryResultLine($nowQuery);
/* Max und Min-Werte bestimmen */
$maxQuery = "SELECT press, to_char(timestamp, 'DD.MM.YYYY HH24:MI') as text_timestamp FROM ".$table['tabelle']." WHERE sens_id=".$sensId." AND press=(SELECT max(press) FROM ".$table['tabelle']." WHERE sens_id=".$sensId.") ORDER BY timestamp DESC LIMIT 1";
$maxData = $connection->fetchQueryResultLine($maxQuery);
$minQuery = "SELECT press, to_char(timestamp, 'DD.MM.YYYY HH24:MI') as text_timestamp FROM ".$table['tabelle']." WHERE sens_id=".$sensId." AND press=(SELECT min(press) FROM ".$table['tabelle']." WHERE sens_id=".$sensId.") ORDER BY timestamp DESC LIMIT 1";
$minData = $connection->fetchQueryResultLine($minQuery);
$nowQuery = "SELECT press, to_char(timestamp, 'DD.MM.YYYY HH24:MI') as text_timestamp FROM ".$this->table." WHERE sens_id=".$this->sensId." ORDER BY timestamp DESC LIMIT 1";
$nowData = $this->connection->fetchQueryResultLine($nowQuery);
/* Bestimmte Werte den Klassenvariablen zuordnen */
$this->nowPress = $nowData['press'];
$this->nowDate = $nowData['text_timestamp'];
$this->maxPress = $maxData['press'];
$this->maxDate = $maxData['text_timestamp'];
$this->minPress = $minData['press'];
$this->minDate = $minData['text_timestamp'];
}
function _fetchMinMax(){
$Query = "SELECT max(press) as max, min(press) as min FROM ".$this->table." WHERE sens_id=".$this->sensId."";
$Data = $this->connection->fetchQueryResultLine($Query);
$this->minPress = $Data['min'];
$this->maxPress = $Data['max'];
}
function _fetchMinMaxDate(){
if($this->maxHum == "nc" || $this->minHum == "nc"){
$this->_fetchMinMax();
}
$Query = "SELECT to_char(max(timestamp), 'DD.MM.YYYY HH24:MI') as text_timestamp FROM ".$this->table." WHERE sens_id=".$this->sensId." AND press=".$this->maxPress." OR press=".$this->minPress." GROUP BY press ORDER BY press ASC LIMIT 2";
$Data = $this->connection->fetchQueryResultSet($Query);
$this->minDate = $Data[0]['text_timestamp'];
$this->maxDate = $Data[1]['text_timestamp'];
}
/* liefert den Durchschnittswert in einem bestimmtem Interval */
function _getAverage($interval){
$avQuery = "SELECT avg(press) as average, count(press) as count FROM ".$this->table." WHERE sens_id=".$this->sensId." AND timestamp>(current_timestamp - INTERVAL '".$interval."')";
@@ -123,18 +126,30 @@ class Press{
}
function get_max_val(){
if($this->maxPress == "nc"){
$this->_fetchMinMax();
}
return $this->maxPress;
}
function get_max_date(){
if($this->minDate == "nc"){
$this->_fetchMinMaxDate();
}
return $this->maxDate;
}
function get_min_val(){
if($this->minPress == "nc"){
$this->_fetchMinMax();
}
return $this->minPress;
}
function get_min_date(){
if($this->maxDate == "nc"){
$this->_fetchMinMaxDate();
}
return $this->minDate;
}