marvin-sqlalchemy-boolean-search 0.2.2

Boolean search expression parser for SQLAlchemy

Changes

This repo has diverged from the original fork. It includes expanded parsing rules; see 0.1.1 changes in the CHANGELOG. It has also been restructured as a standalone pypi package called marvin-sqlalchemy-boolean-search, as its primary use is for https://github.com/sdss/marvin. For a more general standalone package, see https://github.com/havok2063/boolean_parser, which rebuilds this repo functionality into a fully fledged python package.

This repo is maintained at https://github.com/havok2063/SQLAlchemy-boolean-search, with changes pushed occassionally.

SQLAlchemy-boolean-search

SQLAlchemy-boolean-search translates a boolean search string such as:

"field1=*something* and not (field2==1 or parent.field3<=10.0)"

into its corresponding SQLAlchemy query filter:

and_(DataModel.field1.ilike('%something%'),
     not_(or_(DataModel.field2.__eq__(2),
              DataModel.parent.field3.__le__(10.0))))

Relationship field names such as 'parent.grandparent.name' are accepted.

The code is stable, is used in production, and enjoys a test coverage of 100%.

Documentation

SQLAlchemy-boolean-search documentation

Authors

• Ling Thio - ling.thio [at] gmail.com

Acknowledgements

This project would not be possible without the use of the following amazing offerings:

• Flask
• SQLAlchemy
• pyparsing

Alternative modules

• SQLAlchemy-Searchable adds full text searching and relies on PostgreSQL vectors and triggers.
• sqlalchemy-elasticquery