Data Brewery

analytical data streams & online analytical processing Python frameworks

2011-06-25

Brewery 0.7 Released

New small release is out with quite nice addition of documentation. It does not bring too many new features, but contains a refactoring towards better package structure, that breaks some compatibility.

Documentation updates
- installation instructions with list of optional dependencies
- information about fields and metadata
- included documentation about data store classes
- included text from previous blog post about Higher Order Messaging
Framework Changes
- added soft (optional) dependencies on backend libraries. Exception with useful information will be raised when functionality that depends on missing package is used. Example: “Exception: Optional package ‘sqlalchemy’ is not installed. Please install the package from http://www.sqlalchemy.org/ to be able to use: SQL streams. Recommended version is > 0.7”
- field related classes and functions were moved from ‘ds’ module to ‘metadata’ and included in brewery top-level: Field, FieldList, expand_record, collapse_record
- added probes
Depreciated functions
- brewery.ds.field_name() - use str(field) instead
- brewery.ds.fieldlist() - use brewery.metadata.FieldList() instead
Streams
- new node: DeriveNode - derive new field with callables or string formula (python expression)
- new SelectNode implementation: accepts callables or string with python code
- former SelectNode renamed to FunctionSelectNode
Enjoy!

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