objectfactory is a python package to easily implement the factory design pattern for object creation, serialization, and polymorphism

Related tags

Miscellaneous python serialization json factory deserialization factory-pattern
Overview

py-object-factory

Build Status codecov Documentation Status

objectfactory is a python package to easily implement the factory design pattern for object creation, serialization, and polymorphism

  • designed to support polymorphism
  • integrates seamlessly with marshmallow and other serialization frameworks
  • schema inherent in class definition
  • load any object with a generic interface
  • serialize objects to JSON

Example

Simple shapes example:

import objectfactory

@objectfactory.register
class Square( objectfactory.Serializable ):
    side = objectfactory.Field()

    def get_area( self ):
        return self.side * self.side

@objectfactory.register
class Triangle( objectfactory.Serializable ):
    base = objectfactory.Field()
    height = objectfactory.Field()

    def get_area( self ):
        return 0.5 * self.base * self.height

serialized_data = [
    {"_type": "Square", "side": 2.0},
    {"_type": "Triangle", "base": 1.75, "height": 2.50},
    {"_type": "Square", "side": 1.5},
]

for data in serialized_data:
    shape = objectfactory.create( data )
    print( 'class type: {}, shape area: {}'.format( type( shape ), shape.get_area() ) )

Output:

class type: <class '__main__.Square'>, shape area: 4.0
class type: <class '__main__.Triangle'>, shape area: 2.1875
class type: <class '__main__.Square'>, shape area: 2.25

More examples

See more advanced examples here

Install

Use pip for installation

pip install objectfactory

Documentation

Read the full documentation at objectfactory.readthedocs.io

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Comments
  • Support for nested field types

    Support for nested field types

    • allow setting class type for serializable Nested field
    • allow setting class type for nested serializable List
    • will automatically use this class if _type is not specified in dictionary
    • will throw error if conflicting _type is provided
    • bump to 0.0.3
    opened by devinaconley 2
  • 0.1.0

    0.1.0

    Merge updates for release 0.1.0

    • integrate marshmallow serialization framework
    • support typed fields
    • implement nested factory field for marshmallow
    • allow custom marshmallow schema
    • expose static factory methods directly
    • support type enforcement and hinting in factory create method
    • support required fields
    • add from_kwargs constructor to free up __init__
    • create proper abstract base classes
    • refactor and expand test suite
    • setup documentation with sphinx and read the docs
    • update travis build for new platform
    • improve documentation
    • various bug fixes
    opened by devinaconley 1
  • Refactor

    Refactor

    • break out tests in separate modules
    • break out factory and field functionality into separate modules
    • added product_orders.py example
    • added shapes.py example
    • updated README.md
    opened by devinaconley 1
  • Marshmallow integration

    Marshmallow integration

    This PR integrates marshmallow as the underlying serialization framework. This includes:

    • create new abstract base class (ABC) for objects and fields
    • dynamically define marshmallow schema from object definition
    • use schema de/serialization
    • implements enforced fields for primitive types (string, int, float, bool)
    • nested marshmallow field for nested objects and lists
    • support optional custom marshmallow schema
    • new and up[dated examples
    • refactor and expand testing
    opened by devinaconley 0
Releases(0.1.0)

  • 0.1.0(Sep 28, 2021)

    This is the first stable release of objectfactory

    Associated with PR #5

    Changes include:

    • integrate marshmallow serialization framework
    • support typed fields
    • implement nested factory field for marshmallow
    • allow custom marshmallow schema
    • expose static factory methods directly
    • support type enforcement and hinting in factory create method
    • support required fields
    • add from_kwargs constructor to free up __init__
    • create proper abstract base classes
    • refactor and expand test suite
    • setup documentation with sphinx and read the docs
    • update travis build for new platform
    • improve documentation
    • various bug fixes
    Source code(tar.gz)
    Source code(zip)

  • 0.0.3(Dec 18, 2019)

    associated with PR #3

    • allow setting class type for serializable Nested field
    • allow setting class type for nested serializable List
    • will automatically use this class if _type is not specified in dictionary
    • will throw error if conflicting _type is provided
    Source code(tar.gz)
    Source code(zip)

  • 0.0.2(Mar 21, 2019)

  • 0.0.1(Mar 16, 2019)

Owner
Devin A. Conley
Devin A. Conley
GitHub https://objectfactory.readthedocs.io/
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