sensornode updated docs.

server/web-data-connection/sensorNodeClassFile.md

@@ -0,0 +1,51 @@
+## Sensor Node class
+This class is made to get the info of the sensor-nodes and send this to the database.
+This is done this way to make the code more clear and readable. 
+
+```py
+#Import library's
+import mysql.connector
+import json
+#Import classes and functions from different files.
+from classes_data import Node
+from classes_data import dbLogin
+#A class to send data to the database. child class of "Node"
+class SensorNode(Node):
+    #A private query only to be used in this class.
+    __query = "INSERT INTO `Measurement` (NodeID, Type, Value) VALUES (%s, %s, %s)"
+
+    #all variables to be used.
+    def __init__(self, macAdress, temp, humi, eCO2, TVOC):
+        super().__init__(macAdress)
+        self.temperature = temp
+        self.humidity = humi
+        self.eCO2 = eCO2
+        self.TVOC = TVOC
+
+    #a function to connect to the database, grab the info which is given, and push this to the database.
+    async def processSensorNodeData(data, nodeID):
+        try:
+            mydb = dbLogin()
+            cursor = mydb.cursor()
+
+            processedData = json.loads(data)
+            #The variables to give to the database.
+            SensorNode.temperature = (processedData['Temp'])
+            SensorNode.humidity = (processedData['Humi'])
+            SensorNode.eCO2 = (processedData['eCO2'])
+            SensorNode.TVOC = (processedData['TVOC'])
+
+            #A array of the info to be given to the database in the correct format.
+            pushingDataArray = [(nodeID, "Temp", SensorNode.temperature), (nodeID, "Humi", SensorNode.humidity), (nodeID, "eCO2", SensorNode.eCO2), (nodeID, "TVOC", SensorNode.TVOC)]
+            #Go along all files of the array, and push it out to the database following the query.
+            for i in pushingDataArray:
+                cursor.execute(SensorNode.__query, i)
+                mydb.commit()
+        
+                
+        except mysql.connector.Error as err:
+            print("MySQL Error:", err)
+        finally:
+            cursor.close()
+            mydb.close()
+```