epure 0.2.9

purest architecture

Epure

Epure is agnostic ORM - you can store and retrieve data having no idea about database, table and columns. All technical details hidden from you. Care only about your business logic.

Installing

Install and update using pip:

    $ pip install -U epure

Install and update using poetry:

    $ poetry add epure

Connecting Epure to database

Create example class with Epure, create instance of it and read it from DB.

    # import connection functions from Epure
    from epure import GresDb
    from epure import connect

    # First way to connect database to epure

    # Format of string to connect ('database://user:password@host:port')
    GresDb('postgres://postgres:postgres@localhost:5432',
    log_level=3).connect()

    # Alternative way of connection

    db = GresDb('postgres://postgres:postgres@localhost:32', 
    # host="localhost", 
    port="5432", 
    # database="postgres", 
    # user="postgres", 
    password="postgres",
    log_level=3)
    db.connect()

    # log_level defines level of description of opertaions with DB in auto-generated file epure_db.log

A Simple Example

    # save this as epure_example.py
    from epure import epure

    # different types hints avalible
    import types

    # In order to save attributes of class to db, type hints is required!

    # decorate class by @epure() wrap function
    @epure()
    class Example:

        int_attr:int
        bool_attr:bool
        str_attr:str
        complex_attr:complex
        list_attr:list
        dict_attr:Dict[int, str]
        str_attr_with_default_val:str = 'example_str'
        epure_cls_attr:SomeEpureCls
        NoneType_attr:types.NoneType

    # creating instance of epurized Example class
    obj = Example()
    
    # assigning vals to instance
    obj.int_attr = 1
    obj.str_attr = "example"
    obj.list_attr = [1,2,3,4]

    #saving obj instance to database
    obj.save()

    # saved instance has attribute of node_id that is unique
    node_id = epure.node_id 
    
    # node_id is used to search epure objects and retrive them from DB via read() method
    res = epure.table.read(node_id=node_id)

Developers

Nikita Umarov (Pichugin), Pavel Pichugin

Links

• Documentation: https://github.com/nagvalhm/epure/blob/main/README.md
• Changes: https://github.com/nagvalhm/epure
• PyPI Releases: https://pypi.org/project/epure/
• Source Code: https://github.com/nagvalhm/epure
• Issue Tracker: https://github.com/nagvalhm/epure/issues
• Website: https://pypi.org/project/epure/