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table-meta

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table-meta

Universal class that created to be a middleware, universal mapping for data from different parsers - simple-ddl-parser and py-models-parser

  • 0.3.2
  • PyPI
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Table Meta ^^^^^^^^^^

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It's a universal class that created to be a middleware, universal mapping for data from different parsers - simple-ddl-parser and py-models-parser.

Based on this middleware 2 libraries are worked - omymodels & fakeme.

It's allow create 1 adapter for different inputs and produce output only on one standard - easy to maintain ad add different output variants.

All classes - Pydantic classes, so you can do with them anything that you can with Pydantic classes.

Library contains 2 different classes - TableMeta - main class to convert input relative to models or tables. Second - Type, for Enum types data.

How it use ^^^^^^^^^^

Install

.. code-block:: bash

   pip install table-meta

Usage

.. code-block:: python

from table_meta import TableMeta

data = {your_table_definition}

table_data = TableMeta(**data)

Convert simple-ddl-parser input to TableMeta ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Simple-ddl-parser: https://github.com/xnuinside/simple-ddl-parser

Pay attention that TableMeta expected data from simple-ddl-parser , that created with flag 'group_by_type=True' Example: result = DDLParser(ddl).run(group_by_type=True, output_mode="bigquery")

To convert simple-ddl-parser output to TableMeta - use method: ddl_to_meta()

Usage example:

.. code-block:: python

   from simple_ddl_parser import DDLParser
   from table_meta import ddl_to_meta

   ddl = "your ddl"
   parser_result = DDLParser(ddl).run(group_by_type=True, output_mode="bigquery")
   data = ddl_to_meta(parser_result)

   # ddl_to_meta returns Dict with 2 keys {"tables": [], "types": []} inside lists you will have Table Meta a models

   print(data)

Convert py-model-parser input to TableMeta ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Py-models-parser: https://github.com/xnuinside/py-models-parser

Usage example:

.. code-block:: python

   from py_models_parser import parse
   from table_meta import models_to_meta

   model_from = "your python models, supported by parser"
   result = parse(model_from)
   data = models_to_meta(result)

   # models_to_meta returns Dict with 2 keys {"tables": [], "types": []} inside lists you will have a Table Meta models

   print(data)

Changelog

v0.2.1

#. Added support for parsing 'dataset' from data as 'table_schema' also added fields like 'project' (to support BigQuery metadata) #. Depencencies updated #. Added HQL Table Properties

v0.1.5

#. field 'attrs' added to Type to store values from py-models-parser output

v0.1.3

#. 'parents' added to Type and to Table

v0.1.1

#. Fix dependencies for python 3.6

v0.1.0

#. Table Meta moved from O!MyModels to separate library. To make it re-usebale in fakeme library.

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