added Class_Mod/SQL_connect.py to connect to SQL database

Class_Mod/SQL_connect.py

+from Packages import pyodbc, json
+
+class SQL_Database():
+
+    def __init__(self):
+
+        with open('../config/config.json', 'r') as fh:
+            config = json.load(fh)
+
+        self.driver = config['DRIVER']
+        self.server = config['SERVER']
+        self.database = config['DATABASE']
+        self.uid = config['UID']
+        self.pwd = config['PWD']
+        self.port = config['PORT']
+        self.encrypt = config['ENCRYPT']
+
+    def connect(self):
+        connection = pyodbc.connect(
+            f'Driver={self.driver};'
+            f'Server={self.server};'
+            f'Database={self.database};'
+            f'uid={self.uid};'
+            f'pwd={self.pwd};'
+            f'port={self.port};'
+            f'Encrypt={self.encrypt};'
+        )
+        return connection
+
+# How to connect to the db?
+# con = SQL_Database().connect()
+# quest = con.execute("SELECT table_schema || '.' || table_name FROM information_schema.tables WHERE table_type = 'BASE TABLE' AND table_schema NOT IN ('pg_catalog', 'information_schema');")
+# row = quest.fetchone()
+# print(row)
+# quest.close()
+# con.close()

Packages.py

@@ -41,5 +41,10 @@ from sklearn.metrics import pairwise_distances_argmin_min
 ## Web app construction
 import streamlit as st
 
+# help on streamlit input https://docs.streamlit.io/library/api-reference/widgets
+
+#Library for connecting to SQL DB
+import pyodbc
+#Library for reading the config file, which is in JSON
+import json
 
-# help on streamlit input https://docs.streamlit.io/library/api-reference/widgets
\ No newline at end of file

README.md

@@ -11,7 +11,9 @@ The process includes:
 
 
 - predictions - the PINARD package uses the model to predict chemical values for unknown samples.
- 
+
+If one wants to use data stored in a SQL database, the config file is in the config/ folder.
+
 ## Installation
 This package is written in python. You can clone the repository: git clone https://src.koda.cnrs.fr/nicolas.barthes.5/nirs_workflow.git
 

config/config.json

+{
+  "DRIVER":"{PostgreSQL Unicode(x64)}",
+  "DATABASE":"NIRS_Workflow",
+  "UID":"NIRS_Workflow",
+  "PWD":"{lE_mOt%dE_pAsSe%NIRS!!2024}",
+  "SERVER":"10.8.1.225",
+  "PORT":"5432",
+  "ENCRYPT":"no"
+}

requirements.txt

@@ -5,4 +5,5 @@ protobuf>=3.19.0
 watchdog>=2.1.8
 pinard>=1.0
 julia>=0.6.2
-plotly>=5.20.0
\ No newline at end of file
+plotly>=5.20.0
+pyodbc>=5.1.0
\ No newline at end of file