Enabling better filter handling

bridge.py

@@ -48,8 +48,8 @@ class pseudonym :
         """
         credentials = service_account.Credentials.from_service_account_file(args['key'])
         SQL = ["SELECT * FROM :dataset.:table"]
-        if 'filter' in args :
+        # if 'filter' in args :
-            SQL += ['WHERE',args['filter']]
+        #     SQL += ['WHERE',args['filter']]
         dataset = args['dataset']
         table   = args['table']
         SQL = " ".join(SQL+["LIMIT 1"]).replace(":dataset",dataset).replace(":table",table)
@@ -76,10 +76,6 @@ class pseudonym :
         for name in columns :
             p           = dict(args,**{"field":name})
             p['filter'] = '' if 'filter' not in args else args['filter']           
-            # thread = threading.Thread(target=pseudonym.post, args=(p,))
-            # thread.start()
-            # if columns.tolist().index(name) == 0 :
-            #     thread.join()
             pseudonym.post(**p)
             
 
@@ -128,10 +124,16 @@ class Builder :
         TEMPLATE    = ['(SELECT encoded FROM :dataset'+DATASET_SUFFIX+'.'+PSEUDO_TABLENAME,"WHERE table=':table' AND field = ':name' AND  CAST(values AS STRING)=CAST(:table.:name AS STRING ) ) as :name"]
         SQL         = ["SELECT"]
         FIELDS      = []
+        FILTER      = args['filter'] if 'filter' in args else ""
         for field in columns :
             FIELDS += [" ".join(TEMPLATE).replace(":name",field)]
+            # if field in FILTER :
+            #     FILTER  = FILTER.replace(field,'values')
+               
         SQL += [",\n\t".join(FIELDS)]
         SQL += ['FROM :dataset.:table']
+        if FILTER != "" :
+            SQL += ["WHERE ",FILTER]
         return ("\n".join(SQL).replace(":dataset",args['dataset']).replace(':table',args['table']) )
         
     def process(self,**args):
@@ -233,6 +235,10 @@ if __name__ == '__main__' :
             if not os.path.exists(SYS_ARGS['export']) :
                 os.mkdir(SYS_ARGS['export'])
             SQL = builder.encode(**SYS_ARGS)
+            #
+            # Assuming the user wants to filter the records returned :
+            #
+            
             credentials = service_account.Credentials.from_service_account_file(SYS_ARGS['key'])
             df  = pd.read_gbq(SQL,credentials =credentials,dialect='standard')
             FILENAME = os.sep.join([SYS_ARGS['export'],SYS_ARGS['table']+'.csv'])
@@ -240,6 +246,9 @@ if __name__ == '__main__' :
             # This would allow us to export it to wherever we see fit
             print (FILENAME)
             df.to_csv(FILENAME,index=False)
+            f = open(FILENAME.replace('.csv','.sql'),'w+')
+            f.write(SQL)
+            f.close()
         elif 'pseudo' in SYS_ARGS :
             builder.process(**SYS_ARGS)
     else: