Prov

^^^^^^^^^^^^^^^^^^

* The underlying data model has been rewritten and is **incompatible** with pre-1.0 versions.
* References to PROV elements (i.e. entities, activities, agents) in relation records are now QualifiedName instances.
* A document or bundle can have multiple records with the same identifier.
* PROV-JSON serializer and deserializer are now separated from the data model.
* Many tests added, including round-trip PROV-JSON encoding/decoding.
* For changes pre-1.0, see CHANGES.txt.


Change log for pre-1.0 versions
-------------------------------

- Changed: Allowed namespaces at bundle level
- Fixed: Only check equality of ProvBundles on asserted records
- Fixed: Some string literals are wrongly converted to QNames
- Updated test cases from ProvToolbox (v4.1)
- Added text explanations for some ProvException subclasses
- Added support for langtag in prov.persistence.LiteralAttribute
- Fixed: Support for prov:InternationalizedString literals
- Fixed: Keep timezone information when parsing xsd:dateTime

- Added South migrations for prov.persistence
- Fixed: Support for unlimited-length record identifier
- Fixed: Support for unlimited-length URI in namespace
- Fixed: Support for long literals (i.e. longer than 255 characters)
- Fixed: (JSON) Support for membership with multiple members
- Fixed: UnicodeEncodeError error
- Fixed: Support for JSON having records sharing the same identifier
- Fixed: Refactor the flattening code
- Fixed: Parsing XSD dateTime
- Fixed: Triple quoted multi-line string literals in PROV-N
- Added: Support initialising namespaces when creating a ProvBundle

- Added: JSON membership relation with a single entity (in a list)
- Fixed: Not generating inferred records in JSON encoding.
- Fixed: Generating JSON arrays for multi-value attributes
- Fixed: Comparing unicode literal values (fixed 12)
- Fixed: Returning the identifier of a record if the required attribute type is Identifier
- Fixed: No longer trying to find the actual generalEntity record when creating a Mention record
- Added informative arguments to ProvException classes
- Fixed: Attribute validation does not fail if the attribute is already a ProvRecord

- Allow inferred records to be retyped when flattening
- prov.model.graph: check if a node of a relation already drawn
- Add get_flattened() function to ProvBundle
- Added: hash functions for Literal and Namespace
- Changed: Add new bundle's namespaces to parent document
- Fixed: prov.persistence only saves namespaces at document level
- Added: is_document() and is_bundle() for ProvBundle
- Fixed: Stop outputting prefix in an bundle's PROV-JSON
- Changed: Removed namespace declarations in example bundles
- Better handling of ids when generating PROV-JSON
- Changed: Bundles cannot have their own namespace prefixes
- When exporting a bundle as a document add namespaces from parent
- Return pdbundle when calling add_prov_bundle
- Fixed support for the default namespace
- Fixed minor bugs.

- Fixed: Cannot get_label() when self._extra_attributes is None