Boolean search expression parser for SQLAlchemy
Project description
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:
Alternative modules
- SQLAlchemy-Searchable adds full text searching and relies on PostgreSQL vectors and triggers.
- sqlalchemy-elasticquery
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