bug fix: date formatting

pipeline.py

@@ -205,6 +205,8 @@ class Components :
 			reader = factory.instance(**args['store']['source'])
 			if 'file' in args :
 				df = pd.read_csv(args['file'])
+			elif 'data' in _args :
+				df = _args['data']
 			else:
 				if 'row_limit' in args and 'sql' in args:
 					df = reader.read(sql=args['sql'],limit=args['row_limit'])
@@ -226,25 +228,45 @@ class Components :
 		
 		columns = args['columns'] if 'columns' in args else df.columns
 		columns = list(set(columns) - set(_cols))
-		for name in columns :
-			i = np.arange(df.shape[0])
-			np.random.shuffle(i)
-			if name in x_cols :
-				df[name] = self.approximate(df.iloc[i][name].values)
-			df[name] = df.iloc[i][name]
+		# for name in columns:
+		# 	i = np.arange(df.shape[0])
+		# 	np.random.shuffle(i)
+		# 	if name in x_cols :
+		# 		if df[name].unique().size > 0 :
+		# 			df[name] = self.approximate(df.iloc[i][name].fillna(0).values)
+		# 	df[name] = df[name].copy().astype(str)
+		# 	pass
+			
+		df.index = np.arange(df.shape[0])		
 		self.post(data=df,schema=schema,store=args['store']['target'])	
 	def post(self,**_args) :
 		_schema = _args['schema'] if 'schema' in _args else None
 		writer 	= factory.instance(**_args['store'])
 		_df 	= _args['data']
 		if _schema :
-			
+			columns = []
 			for _item in _schema :
-				if _item['type'] in ['DATE','TIMESTAMP','DATETIME'] :
-					_df[_item['name']] = _df[_item['name']].astype(str)			
+				name = _item['name']
+				_type = str
+				_value = 0
+				if _item['type'] in ['DATE','TIMESTAMP','DATETIMESTAMP','DATETIME'] :
+					if _item['type'] == 'DATE' :
+						_df[name] = _df[name].dt.date
+					
+					
+					
+				else:
+					if _item['type'] == 'INTEGER' :
+						_type = np.int64
+					elif _item['type'] in ['FLOAT','NUMERIC']:
+						_type = np.float64
+					else:
+						_value = ''
+					_df[name] = _df[name].fillna(_value).astype(_type)
+				columns.append(name)
 			writer.write(_df,schema=_schema,table=args['from'])
 		else:
-			writer.write(_df,table=args['from'])
+			writer.write(_df[columns],table=args['from'])
 
 	# @staticmethod
 	def generate(self,args):