threadingpg 0.0.4

Simple control 'psycopg2'(PostgreSQL).

threadingpg

Control PostgreSQL using thread(s).

Initialize Connector

import threadingpg
connector = threadingpg.Connector(dbname='database_name', user='user_name', password='password', port=5432)
# ...
connector.close()

Drop, Create Table

mytable = MyTable()
connector.drop_table(mytable)
connector.create_table(mytable)

Create Table and Row Class

Table Class

import threadingpg
from threadingpg import datatype

class MyTable(threadingpg.data.Table):
    table_name="mytable"
    index = threadingpg.data.Column(data_type=datatype.serial)
    name = threadingpg.data.Column(data_type=datatype.varchar())
# or 
class MyTable(threadingpg.data.Table):
    def __init__(self) -> None:
        self.index = threadingpg.data.Column(data_type=datatype.serial)
        self.name = threadingpg.data.Column(data_type=datatype.varchar())
        super().__init__("mytable") # important position

Row Class

equal name of columns.

class MyRow(threadingpg.data.Row):
    def __init__(self,
                 name:str=None) -> None:
        self.name = name

Insert

mytable = MyTable()
myrow = MyRow("my_row")
connector.insert_row(mytable, myrow)
# or
connector.insert_dict(mytable, {"name":"my_row"})

Select

mytable = MyTable()
column_name_list, rows = connector.select(mytable)
for row in rows:
    myrow = MyRow()
    myrow.set_data(column_name_list, row)
    print(f"output: {myrow.name}") # output: my_row

Condition - Where

mytable = MyTable()
condition_equal_1 = threadingpg.condition.Equal(mytable.index, 1)
condition_equal_2 = threadingpg.condition.Equal(mytable.index, 2)
condition_equal_3 = threadingpg.condition.Equal(mytable.index, 3)
conditions = threadingpg.condition.Or(condition_equal_1, condition_equal_2, condition_equal_3)
column_name_list, rows = connector.select(mytable, where=conditions)

Condition - OrderBy

mytable = MyTable()
orderby_index = threadingpg.condition.OrderBy(mytable.index)
orderby_name = threadingpg.condition.OrderBy(mytable.name, True)
orderby_conditions = threadingpg.condition.And(orderby_index, orderby_name)
column_name_list, rows = connector.select(mytable, order_by=orderby_conditions)

Update

mytable = MyTable()
myrow = MyRow("update_my_row")
condition_equal_0 = threadingpg.condition.Equal(mytable.index, 0)
connector.update_row(mytable, myrow, condition_equal_0)

Delete

mytable = MyTable()
delete_condition = threadingpg.condition.Equal(mytable.index, 5)
connector.delete_row(mytable, delete_condition)

Simple Trigger

mytable = MyTable()
channel_name = "mych"
trigger_name = "mytr"
function_name = "myfn"
connector.create_trigger_function(function_name, channel_name)
connector.create_trigger(mytable, trigger_name, function_name)
notify_queue = queue.Queue()
# implement 'notify = notify_queue.get()'
connector.start_channel_listener(notify_queue)
connector.listen_channel(channel_name)