path: root/CHANGELOG

2013/XX/XX 
    RELEASE 4.0 

    This release includes several major changes:

    * The new SPARQL 1.1 engine (rdflib-sparql) has been included in
      the core distribution. SPARQL 1.1 queries and updates should
      work out of the box.

      * SPARQL paths are exposed as operators on URIRefs, these can
        then be be used with graph.triples and friends:
  
           List names of friends of Bob:
           g.triples(( bob, FOAF.knows/FOAF.name , None )) 

		   All super-classes:
		   g.triples(( cls, RDFS.subClassOf * '+', None )) 

	  * a new graph.update method will apply SPARQL update statements

    * Several RDF 1.1 features are available:
      * A new DataSet class 
      * XMLLiteral and HTMLLiterals 
      * BNode (de)skolemization is supported through BNode.skolemize, 
        URIRef.de_skolemize, Graph.skolemize and Graph.de_skolemize
        
    * Handled of Literal equality was split into lexical comparison
      (for normal == operator) and value space (using new Node.eq
      methods). This introduces some slight backwards incomaptible
      changes, but was necessary, as the old version had
      inconsisten hash and equality methods that could lead the
      literals not working correctly in dicts/sets. 
      The new way is more in line with how SPARQL 1.1 works.
      For the full details, see:
      
      https://github.com/RDFLib/rdflib/wiki/Literal-reworking

    * Iterating over QueryResults will generate ResultRow objects,
      these allow access to variable bindings as attributes or as a
      dict. I.e. 

            for row in graph.query('select ... ') :
                print row.age, row["name"]

	* "Slicing" of Graphs and Resources as syntactic sugar: 
	  https://github.com/RDFLib/rdflib/pull/271

		graph[bob:FOAF.knows/FOAF.name] 
			-> generator over the names of Bobs friends
		
	* The SPARQLStore and SPARQLUpdateStore are now included in the RDFLib core
	
    

    Minor Changes:

    * String operations on URIRefs return new URIRefs:
	  >>> URIRef('http://example.org/')+'test
      rdflib.term.URIRef('http://example.org/test')

	  https://github.com/RDFLib/rdflib/pull/258 
	* Namespace is no longer a subclass of URIRef
    * URIRefs and Literal language tags are validated on construction,
      avoiding some "RDF-injection" issues
      https://github.com/RDFLib/rdflib/issues/266
    * A new memory store needs much less memory when loading large
      graphs
	  https://github.com/RDFLib/rdflib/pull/268 
    * Turtle/N3 serializer now supports the base keyword correctly
      https://github.com/RDFLib/rdflib/issues/248
    * py2exe support was fixed
      https://github.com/RDFLib/rdflib/pull/257
    * Several bugs in the TriG serializer were fixed
    * Several bugs in the NQuads parser were fixed

2013/03/01 RELEASE 3.4

	This release introduced new parsers for structured data in HTML.
	In particular formats: hturtle, rdfa, mdata and an auto-detecting
	html format were added.  Thanks to Ivan Herman for this!

	This release includes a lot of admin maintentance - correct
	dependencies for different python versions, etc.  Several py3 bugs
	were also fixed.

	This release drops python 2.4 compatability - it was just getting
	too expensive for us to maintain. It should however be compatible
	with any cpython from 2.5 through 3.3.

	* node.md5_term is now deprecated, if you use it let us know. 

	* Literal.datatype/language are now read-only properties
	  https://github.com/RDFLib/rdflib/issues/226
	* Serializing to file fails in py3
	  https://github.com/RDFLib/rdflib/pull/249
	* TriX serializer places two xmlns attributes on same element
	  https://github.com/RDFLib/rdflib/issues/250
	* RDF/XML parser fails on when XML namespace is not explicitly declared
	  https://github.com/RDFLib/rdflib/issues/247
	* Resource class should "unbox" Resource instances on add
	  https://github.com/RDFLib/rdflib/issues/215	   
	* Turtle/N3 does not encode final quote of a string
	  https://github.com/RDFLib/rdflib/issues/239
	* float Literal precision lost when serializing graph to turtle or n3
	  https://github.com/RDFLib/rdflib/issues/237
	* plain-literal representation of xsd:decimals fixed
	* allow read-only sleepycat stores 
	* language tag parsing in N3/Turtle fixes to allow several subtags. 

2012/10/10
	RELEASE 3.2.3

	Almost identical to 3.2.2
	A stupid bug snuck into 3.2.2, and querying graphs were broken.

	* Fixes broken querying
	  https://github.com/RDFLib/rdflib/issues/234
	* graph.transitiveClosure now works with loops
	  https://github.com/RDFLib/rdflib/issues/206

2012/09/25
		RELEASE 3.2.2

	This is mainly a maintenance release.

	This release should be compatible with python 2.4 through to 3.

	Changes:
	  * Improved serialization/parsing roundtrip tests led to some fixes
		of obscure parser/serializer bugs. In particular complex string
		Literals in ntriples improved a lot.
	  * The terms of a triple are now asserted to be RDFLib Node's in graph.add
		This should avoid getting strings and other things in the store.
		https://github.com/RDFLib/rdflib/issues/200
	  * Added a specific TurtleParser that does not require the store to be
		non-formula aware.
		https://github.com/RDFLib/rdflib/issues/214
	  * A trig-serializer was added, see:
		http://www4.wiwiss.fu-berlin.de/bizer/trig/
	  * BNode generation was made thread-safe
		https://github.com/RDFLib/rdflib/issues/209
		(also fixed better by dzinxed)
	  * Illegal BNode IDs removed from NT output:
		https://github.com/RDFLib/rdflib/issues/212
	  * and more minor bug fixes that had no issues

2012/04/24
		RELEASE 3.2.1

	This is mainly a maintenance release.

	Changes:
	  * New setuptools entry points for query processors and results

	  * Literals constructed from other literals copy datatype/lang
		https://github.com/RDFLib/rdflib/issues/188
	  * Relative URIs are resolved incorrectly after redirects
		https://github.com/RDFLib/rdflib/issues/130
	  * Illegal prefixes in turtle output
		https://github.com/RDFLib/rdflib/issues/161
	  * Sleepcat store unstable prefixes
		https://github.com/RDFLib/rdflib/issues/201
	  * Consistent toPyton() for all node objects
		https://github.com/RDFLib/rdflib/issues/174
	  * Better random BNode ID in multi-thread environments
		https://github.com/RDFLib/rdflib/issues/185

2012/01/19
		RELEASE 3.2.0

	Major changes:
	  * Thanks to Thomas Kluyver, rdflib now works under python3,
		the setup.py script automatically runs 2to3.

	  * Unit tests were updated and cleaned up. Now all tests should pass.
	  * Documentation was updated and cleaned up.

	  * A new resource oriented API was added:
		http://code.google.com/p/rdflib/issues/detail?id=166

		Fixed many minor issues:
		  * http://code.google.com/p/rdflib/issues/detail?id=177
		http://code.google.com/p/rdflib/issues/detail?id=129
			Restored compatability with Python 2.4
		  * http://code.google.com/p/rdflib/issues/detail?id=158
		Reworking of Query result handling
		  * http://code.google.com/p/rdflib/issues/detail?id=193
		generating xml:base attribute in RDF/XML output
	  * http://code.google.com/p/rdflib/issues/detail?id=180
			serialize(format="pretty-xml") fails on cyclic links
	

2011/03/17
		RELEASE 3.1.0

		Fixed a range of minor issues:
		  * http://code.google.com/p/rdflib/issues/detail?id=128
				  Literal.__str__ does not behave like unicode
		  * http://code.google.com/p/rdflib/issues/detail?id=141
			(RDFa Parser) Does not handle application/xhtml+xml
		  * http://code.google.com/p/rdflib/issues/detail?id=142
			RDFa TC #117: Fragment identifiers stripped from BASE
		  * http://code.google.com/p/rdflib/issues/detail?id=146
			Malformed literals produced when rdfa contains newlines
		  * http://code.google.com/p/rdflib/issues/detail?id=152
			Namespaces beginning with _ are invalid
		  * http://code.google.com/p/rdflib/issues/detail?id=156
			Turtle Files with a UTF-8 BOM fail to parse
		  * http://code.google.com/p/rdflib/issues/detail?id=154
			ClosedNamespace.__str__ returns URIRef not str
		  * http://code.google.com/p/rdflib/issues/detail?id=150
			IOMemory does not override open
		  * http://code.google.com/p/rdflib/issues/detail?id=153
			Timestamps with microseconds *and* "Z" timezone are not parsed
		  * http://code.google.com/p/rdflib/issues/detail?id=118
			DateTime literals with offsets fail to convert to Python
		  * http://code.google.com/p/rdflib/issues/detail?id=157
			Timestamps with timezone information are not parsed
		  * http://code.google.com/p/rdflib/issues/detail?id=151
				  problem with unicode literals in rdflib.compare.graph_diff
		  * http://code.google.com/p/rdflib/issues/detail?id=149
			Sleepycat Store broken with create=False
		  * http://code.google.com/p/rdflib/issues/detail?id=134
			Would be useful if Graph.query could propagate kwargs to a
			plugin processor
		  * http://code.google.com/p/rdflib/issues/detail?id=133
			Graph.connected exception when passed empty graph
		  * http://code.google.com/p/rdflib/issues/detail?id=129
			Not compatible with Python 2.4
		  * http://code.google.com/p/rdflib/issues/detail?id=119
			Support Python's set operations on Graph
		  * http://code.google.com/p/rdflib/issues/detail?id=130
			NT output encoding to utf-8 broken as it goes through
			_xmlcharrefreplace
		  * http://code.google.com/p/rdflib/issues/detail?id=121#c1
			Store SPARQL Support

2010/05/13
		RELEASE 3.0.0

		Working test suite with all tests passing.

		Removed dependency on setuptools.

		(Issue #43) Updated Package and Module Names to follow
		conventions outlined in
		http://www.python.org/dev/peps/pep-0008/

		Removed SPARQL bits and non core plugins. They are mostly
		moving to http://code.google.com/p/rdfextras/ at least until
		they are stable.

		Fixed datatype for Literal(True).

		Fixed Literal to enforce contraint of having either a language
		or datatype but not both.

		Fixed Literal's repr.

		Fixed to Graph Add/Sub/Mul opterators.

		Upgraded RDFa parser to pyRdfa.

		Upgraded N3 parser to the one from CWM.

		Fixed unicode encoding issue involving N3Parser.

		N3 serializer improvments.

		Fixed HTTP content-negotiation

		Fixed Store.namespaces method (which caused a few issues
		depending on Store implementation being used.)

		Fixed interoperability issue with plugin module.

		Fixed use of Deprecated functionality.

2009/03/30
		RELEASE 2.4.1

		Fixed Literal comparison case involving Literal's with
		datatypes of XSD.base64Binary.

		Fixed case where XSD.date was matching before XSD.dateTime for
		datetime instances.

		Fixed jython interoperability issue (issue #53).

		Fixed Literal repr to handle apostrophes correctly (issue #28).

		Fixed Literal's repr to be consistent with its __init__ (issue #33).


2007/04/04
		RELEASE 2.4.0

		Improved Literal comparison / equality

		Sparql cleanup.

		getLiteralValue now returns the Literal object instead of the
		result of toPython().  Now that Literals override a good
		coverage of comparison operators, they should be passed around
		as first class objects in the SPARQL evaluation engine.

		Added support for session bnodes re: sparql

		Fixed prolog reduce/reduce conflict.  Added Py_None IncRefs
		where they were being passed into Python method invokations
		(per drewp's patch)

		Fixed sparql queries involving empty namespace prefix.

		Fixed the selected variables sparql issue

		Fixed <BASE> support in SPARQL queries.

		Fixed involving multiple unions and queries are nested more
		than one level (bug in _getAllVariables causing failure when
		parent.top is None)

		Fixed test_sparql_equals.py.

		Fixed sparql json result comma errors issue.

		Fixed test_sparql_json_results.py (SELECT * variables out of
		order)

		Added a 4Suite-based SPARQL XML Writer implementation.  If
		4Suite is not installed, the fallback python saxutils is used
		instead

		applied patch from
		http://rdflib.net/issues/2007/02/23/bugs_in_rdflib.sparql.queryresult/issue

		The restriction on GRAPH patterns with variables has been
		relieved a bit to allow such usage when the variable is
		provided as an initial binding

		Fix for OPTIONAL patterns.  P1 OPT P2, where P1 and P2 shared
		variables which were bound to BNodes were not unifying on
		these BNode variable efficiently / correctly.  The fix was to
		add bindings for 'stored' BNodes so they aren't confused for
		wildcards




		Added support to n3 parser for retaining namespace bindings.

		Fixed several RDFaParser bugs.

		Added serializer specific argument support.

		Fixed a few PrettyXMLSerializer issues and added a max_depth
		option.

		Fixed some TurtleSerializer issues.

		Fixed some N3Serializer issues.



		Added support easy_install

		added link to long_descriptin for easy_install -U rdflib==dev
		to work; added download_url back

		added continuous-releases-using-subversion bit



		Added rdflib_tools package
		  Added rdfpipe
		  Added initial EARLPluging



		Improved test running... using nose... added tests

		Exposed generated test cases for nose to find.
		added bit to configure 'setup.py nosetests' to run doc tests

		added nose test bits



		Added md5_term_hash method to terms.

		Added commit_pending_transaction argument to Graph's close
		method.

		Added DeprecationWarning to rdflib.constants

		Added a NamespaceDict class for those who want to avoid the
		Namespace as subclass of URIRef issues

		Added bind function

		Fixed type of Namespace re: URIRef vs. unicode

		Improved ValueError message

		Changed value method's any argument to default to True

		Changed __repr__ to always reflect that it's an rdf.Literal --
		as this is the case even though we now have it acting like the
		corresponding type in some casses

		A DISTINCT was added to the SELECT clause to ensure duplicate
		triples are not returned (an RDF graph is a set of triples) -
		which can happen for certain join expressions.

		Support for ConditionalAndExpressionList and
		RelationalExpressionList (|| and && operators in FILTER)

		Fixed context column comparison.  The hash integer was being
		compared with 'F' causing a warning:Warning: Truncated
		incorrect DOUBLE value: 'F'

		applied patch in
		http://rdflib.net/issues/2006/12/13/typos_in_abstractsqlstore.py/issue

		fix for
		http://rdflib.net/issues/2006/12/07/problems_with_graph.seq()_when_sequences_contain_more_than_9_items./issue





		General code cleanup (removing redundant imports, changing
		relative imports to absolute imports etc)

		Removed usage of deprecated bits.

		Added a number of test cases.

		Added DeprecationWarning for save method

		refactoring of GraphPattern

		ReadOnlyGraphAggregate uses Graph constructor properly to
		setup (optionally) a common store


		Fixed bug with . (fullstop) in localname parts.

		Changed Graph's value method to return None instead of raising
		an AssertionError.

		Fixed conversion of (exiplicit) MySQL ports to integers.

		Fixed MySQL store so it properly calculates __len__ of
		individual Graphs

		Aligned with how Sleepycat is generating events (remove events
		are expressed in terms of interned strings)

		Added code to catch unpickling related exceptions

		Added BerkeleyDB store implementation.

		Merged TextIndex from michel-events branch.


2006/10/15
		RELEASE 2.3.3

		Added TriXParser, N3Serializer and TurtleSerializer.

		Added events to store interface: StoreCreated, TripleAdded and
		TripleRemoved.

		Added Journal Reader and Writer.

		Removed Sleepycat level journaling.

		Added support for triple quoted Literal's.

		Fixed some corner cases with Literal comparison.

		Fixed PatternResolution for patterns that return contexts only.

		Fixed NodePickler not to choke on unhashable objects.

		Fixed Namespace's __getattr__ hack to ignore names starting
		with __

		Added SPARQL != operator.

		Fixed query result __len__ (more efficient).

		Fixed and improved RDFa parser.

		redland patches from
		http://rdflib.net/pipermail/dev/2006-September/000069.html

		various patches for the testsuite -
		http://rdflib.net/pipermail/dev/2006-September/000069.html


2006/08/01
		RELEASE 2.3.2

		Added SPARQL query support.

		Added XSD to/from Python datatype support to Literals.

		Fixed ConjunctiveGraph so that it is a proper subclass of Graph.

		Added Deprecation Warning when BackwardCompatGraph gets used.

		Added RDFa parser.

		Added Collection Class for working with RDF Collections.

		Added method to Graph for testing connectedness

		Fixed bug in N3 parser where identical BNodes were not being combined.

		Fixed literal quoting in N3 serializer.

		Fixed RDF/XML serializer to skip over N3 bits.

		Changed Literal and URIRef instanciation to catch
		UnicodeDecodeErrors - which were being thrown when the default
		decoding method (ascii) was hitting certain characters.

		Changed Graph's bind method to also override the binding in
		the case of an existing generated bindings.

		Added FOPLRelationalModel - a set of utility classes that
		implement a minimal Relational Model of FOPL implemented as a
		SQL database (uses identifier/value interning and integer
		half-md5-hashes for space and index efficiency).

		Changed MySQL store to use FOPLRelationalModel plus fixes and
		improvements.

		Added more test cases.

		Cleaned up source code to follow pep8 / pep257.


2006/02/27
		RELEASE 2.3.1

		Added save method to BackwardCompatibleGraph so that
		example.py etc work again.

		Applied patch from Drew Perttula to add local_time_zone
		argument to util's date_time method.

		Fixed a relativize bug in the rdf/xml serializer.

		Fixed NameError: global name 'URIRef' is not defined error in
		Sleepycat.py by adding missing import.

		Applied patch for Seq to sort list by integer, added by Drew
		Hess.

		Added a preserve_bnode_ids option to rdf/xml parser.

		Applied assorted patches for tests (see
		http://tracker.asemantics.com/rdflib/ticket/8 )

		Applied redland.diff (see
		http://tracker.asemantics.com/rdflib/ticket/9 )

		Applied changes specified
		http://tracker.asemantics.com/rdflib/ticket/7

		Added a set method to Graph.

		Fixed RDF/XML serializer so that it does not choke on n3 bits
		(rather it'll just ignore them)


2005/12/23
		RELEASE 2.3.0

		See http://rdflib.net/2.3.0/ for most up-to-date release notes

		Added N3 support to Graph and Store.

		Added Sean's n3p parser, and ntriples parser.

		Sleepycat implementation has been revamped in the process of
		expanding it to support the new requirements n3
		requirements. It also now persists a journal -- more to come.

		detabified source files.

		Literal and parsers now distinguish between datatype of None and datatype of "".

		Store-agnostic 'fallback' implementation of REGEX matching
		(inefficient but provides the capability to stores that don't
		support it natively). Implemented as a 'wrapper' around any
		Store which replaces REGEX terms with None (before dispatching
		to the store) and whittles out results that don't match the
		given REGEX term expression(s).

		Store-agnostic 'fallback' implementation of transactional
		rollbacks (also inefficient but provides the capablity to
		stores that don't support it natively). Implemented as a
		wrapper that tracks a 'thread-safe' list of reversal
		operations (for every add, track the remove call that reverts
		the store, and vice versa). Upon store.rollback(), execute the
		reverse operations. However, this doesn't guarantee
		durability, since if the system fails before the rollbacks are
		all executed, the store will remain in an invalid state, but
		it provides Atomicity in the best case scenario.


2005/10/10
		RELEASE 2.2.3

		Fixed Sleepycat backend to commit after an add and
		remove. This should help just a bit with those unclean
		shutdowns ;)

		Fixed use of logging so that it does not mess with the root
		logger. Thank you, Arve, for pointing this one out.

		Fixed Graph's value method to have default for subject in
		addition to predicate and object.

		Fixed Fourthought backend to be consistent with interface. It
		now supports an empty constructor and an open method that
		takes a configuration string.


2005/09/10
		RELEASE 2.2.2

		Applied patch from inkel to add encoding argument to all
		serialization related methods.

		Fixed XMLSerializer bug regarding default namespace bindings.

		Fixed namespace binding bug involving binding a second default
		namespace.

		Applied patch from Gunnar AAstrand Grimnes to add context
		support to __iadd__ on Graph. (Am considering the lack of
		context support a bug. Any users currently using __iadd__, let
		me know if this breaks any of your code.)

		Added Fourthought backend contributed by Chimezie Ogbuji.

		Fixed a RDF/XML parser bug relating to XMLLiteral and
		escaping.

		Fixed setup.py so that install does not try to uninstall
		(rename_old) before installing; there's now an uninstall
		command if one needs to uninstall.


2005/08/25
		RELEASE 2.2.1

		Fixed issue regarding Python2.3 compatibility.

		Fixed minor issue with URIRef's absolute method.


2005/08/12
		RELEASE 2.1.4

		Added optional base argument to URIRef.

		Fixed bug where load and parse had inconsistent behavior.

		Added a FileInputSource.

		Added skeleton sparql parser and test framework.

		Included pyparsing (pyparsing.sourceforge.net) for sparql parsing.

		Added attribute support to namespaces.


2005/06/28
		RELEASE 2.1.3

		Added Ivan's sparql-p implementation.

		Literal is now picklable.

		Added optional base argument to serialize methods about which to relativize.

		Applied patch to remove some dependencies on Python 2.4
		features.

		Fixed BNode's n3 serialization bug (recently introduced).

		Fixed a collections related bug.


2005/05/13
		RELEASE 2.1.2

		Added patch from Sidnei da Silva that adds a sqlobject based backend.

		Fixed bug in PrettyXMLSerializer (rdf prefix decl was missing sometimes)

		Fixed bug in RDF/XML parser where empty collections where
		causing exceptions.


2005/05/01
		RELEASE 2.1.1

		Fixed a number of bugs relating to 2.0 backward compatibility.

		Fixed split_uri to handle URIs with _ in them properly.

		Fixed bug in RDF/XML handler's absolutize that would cause some URIRefs to end in ##

		Added check_context to Graph.

		Added patch the improves IOMemory implementation.


2005/04/12
		RELEASE 2.1.0

		Merged TripleStore and InformationStore into Graph.

		Added plugin support (or at least cleaned up, made consistent the
		plugin support that existed).

		Added value and seq methods to Graph.

		Renamed prefix_mapping to bind.

		Added namespaces method that is a generator over all prefix,
		namespace bindings.

		Added notion of NamespaceManager.

		Added couple new backends, IOMemory and ZODB.


2005/03/19
		RELEASE 2.0.6

		Added pretty-xml serializer (inlines BNodes where possible,
		typed nodes, Collections).

		Fixed bug in NTParser and n3 methods where not all characters
		where being escaped.

		Changed label and comment methods to return default passed in
		when there is no label or comment. Moved methods to Store
		Class. Store no longer inherits from Schema.

		Fixed bug involving a case with rdf:about='#'

		Changed InMemoryBackend to update third index in the same style it
		does the first two.


2005/01/08
		RELEASE 2.0.5

		Added publicID argument to Store's load method.

		Added RDF and RDFS to top level rdflib package.


2004/10/14
		RELEASE 2.0.4

		Removed unfinished functionality.

		Fixed bug where another prefix other than rdf was getting
		defined for the rdf namespace (causing an assertion to fail).

		Fixed bug in serializer where nodeIDs were not valid NCNames.


2004/04/21
		RELEASE 2.0.3

		Added missing "from __future__ import generators" statement to
		InformationStore.

		Simplified RDF/XML serializer fixing a few bugs involving
		BNodes.

		Added a reset method to RDF/XML parser.

		Changed 'if foo' to "if foo is not None" in a few places in
		the RDF/XML parser.

		Fully qualified imports in rdflib.syntax {parser, serializer}.

		Context now goes through InformationStore (was bypassing it
		going directly to backend).


2004/03/22
		RELEASE 2.0.2

		Improved performance of Identifier equality tests.

		Added missing "from __future__ import generators" statements
		needed to run on Python2.2.

		Added alternative to shlib.move() if it isn't present.

		Fixed bug that occured when specifying a backend to
		InformationStore's constructor.

		Fixed bug recently introduced into InformationStore's remove
		method.


2004/03/15
		RELEASE 2.0.1

		Fixed a bug in the SleepyCatBackend multi threaded concurrency
		support. (Tested fairly extensively under the following
		conditions: multi threaded, multi process, and both).  NOTE:
		fix involved change to database format -- so 2.0.1 will not be
		able to open databases created with 2.0.0

		Removed the use of the Concurrent wrapper around
		InMemoryBackend and modified InMemoryBackend to handle
		concurrent requests. (Motivated by Concurrent's poor
		performance on bigger TripleStores.)

		Improved the speed of len(store) by making backends
		responsible for implementing __len__.

		Context objects now have a identifier property.


2004/03/10
		RELEASE 2.0.0

		Fixed a few bugs in the SleepyCatBackend multi process
		concurrency support.

		Removed rdflib.Resource

		Changed remove to now take a triple pattern and removed
		remove_triples method.

		Added __iadd__ method to Store in support of store +=
		another_store.


2004/01/04
		RELEASE 1.3.2

		Added a serialization dispatcher.

		Added format arg to save method.

		Store now remembers prefix/namespace bindings.

		Backends are now more pluggable

		...

2003/10/14
		RELEASE 1.3.1

		Fixed bug in serializer where triples where only getting
		serialized the first time.

		Added type checking for contexts.

		Fixed bug that caused comparisons with a Literal to fail when
		the right hand side was not a string.

		Added DB_INIT_CDB flag to SCBacked for supporting multiple
		reader/single writer access

		Changed rdf:RDF to be optional to conform with latest spec.

		Fixed handling of XMLLiterals


2003/04/40
		RELEASE 1.3.0

		Removed bag_id support and added it to OLD_TERMS.

		Added a double hash for keys in SCBacked.

		Fixed _HTTPClient so that it no longer removes metadata about
		a context right after it adds it.

		Added a KDTreeStore and RedlandStore backends.

		Added a StoreTester.


2003/02/28
		RELEASE 1.2.4

		Fixed bug in SCBackend where language and datatype information
		where being ignored.

		Fixed bug in transitive_subjects.

		Updated some of the test cases that where not up to date.

		async_load now adds more http header and error information to
		the InformationStore.


2003/02/11
		RELEASE 1.2.3

		Fixed bug in load methods where relative URLs where not being
		absolutized correctly on Windows.

		Fixed serializer so that it throws an exception when trying to
		serialize a graph with a predicate that can not be split.


2003/02/07
		RELEASE 1.2.2

		Added an exists method to the BackwardCompatibility mixin.

		Added versions of remove, remove_triples and triples methods
		to the BackwardCompatility mixin for TripleStores that take an
		s, p, o as opposed to an (s, p, o).


2003/02/03
		RELEASE 1.2.1

		Added support for parsing XMLLiterals.

		Added support for proper charmod checking (only works in
		Python2.3).

		Fixed remaining rdfcore test cases that where not passing.

		Fixed windows bug in AbstractInformationStore's run method.


2003/01/02
		RELEASE 1.2.0

		Added systemID, line #, and column # to error messages.

		BNode prefix is now composed of ascii_letters instead of letters.

		Added a bsddb backed InformationStore.

		Added an asyncronous load method, methods for scheduling context
		updates, and a run method.


2002/12/16
		RELEASE 1.1.5

		Introduction of InformationStore, a TripleStore with the
		addition of context support.

		Resource __getitem__ now returns object (no longer returns a
		Resource for the object).

		Fixed bug in parser that was introduced in last release
		regaurding unqualified names.


2002/12/10
		RELEASE 1.1.4

		Interface realigned with last stable release.

		Serializer now uses more of the abbreviated forms where
		possible.

		Parser optimized and cleaned up.

		Added third index to InMemoryStore.

		The load and parse methods now take a single argument.

		Added a StringInputSource for to support parsing from strings.

		Renamed rdflib.BTreeTripleStore.TripleStore to
		rdflib.BTreeTripleStore.BTreeTripleStore.

		Minor reorganization of mix-in classes.


2002/12/03
		RELEASE 1.1.3

		BNodes now created with a more unique identifier so BNodes
		from different sessions do not collide.

		Added initial support for XML Literals (for now they are
		parsed into Literals).

		Resource is no longer a special kind of URIRef.

		Resource no longer looks at range to determine default return
		type for __getitem__. Instead there is now a get(predicate, default)
		method.


2002/11/21
		RELEASE 1.1.2

		Fixed Literal's __eq__ method so that Literal('foo')=='foo' etc.

		Fixed Resource's __setitem__ method so that it does not raise
		a dictionary changed size while iterating exception.


2002/11/09
		RELEASE 1.1.1

		Resource is now a special kind of URIRef

		Resource's __getitem__ now looks at rdfs:range to determine
		return type in default case.



2002/11/05
		RELEASE 1.1.0 # A new development branch

		Cleaned up interface and promoted it to SIR: Simple Interface
		for RDF.

		Updated parser to use SAX2 interfaces instead of using expat directly.

		Added BTreeTripleStore, a ZODB BTree TripleStore backend. And
		a default pre-mixed TripleStore that uses it.

		Synced with latest (Editor's draft) RDF/XML spec.

		Added datatype support.

		Cleaned up interfaces for load/parse: removed generate_path
		from loadsave andrenamed parse_URI to parse.


2002/10/08
		RELEASE 0.9.6 # The end of a development brant

		BNode can now be created with specified value.

		Literal now has a language attribute.

		Parser now creates Literals with language attribute set
		appropriately as determined by xml:lang attributes.


		TODO: Serializer-Literals-language attribute

		TODO: Change __eq__ so that Literal("foo")=="foo" etc

		TripleStores now support "in" operator.
		For example: if (s, p, o) in store: print "Found ", s, p, o

		Added APIs/object for working at level of a Resource. NOTE:
		This functionality is still experimental

		Consecutive Collections now parse correctly.

2002/08/06
		RELEASE 0.9.5

		Added support for rdf:parseType="Collection"

		Added items generator for getting items in a Collection

		Renamed rdflib.triple_store to rdflib.TripleStore to better follow
		python style conventions.

		Added an Identifier Class

		Moved each node into its own Python module.

		Added rdflib.util with a first and uniq function.

		Added a little more to example.py

		Removed generate_uri since we have BNodes now.


2002/07/29
		RELEASE 0.9.4

		Added support for proposed rdf:nodeID to both the parser and
		serializer.

		Reimplemented serializer which now nests things where
		possible.

		Added partial support for XML Literal parseTypes.


2002/07/16
		RELEASE 0.9.3

		Fixed bug where bNodes where being created for nested property
		elements when they where not supposed to be.

		Added lax mode that will convert rdf/xml files that contain bare
		IDs etc. Also, lax mode will only report parse errors instead of
		raising exceptions.

		Added missing check for valid attribute names in the case of
		production 5.18 of latest WD spec.


2002/07/05
		RELEASE 0.9.2

		Added missing constants for SUBPROPERTYOF, ISDEFINEDBY.

		Added test case for running all of the rdf/xml test cases.

		Reimplemented rdf/xml parser to conform to latest WD.


2002/06/10
		RELEASE 0.9.1

		There is now a remove and a remove_triples (no more overloaded
		remove).

		Layer 2 has been merged with layer 1 since there is no longer a
		need for them to be separate layers.

		The generate_uri method has moved to LoadSave since triple stores
		do not have a notion of a uri. [Also, with proper bNode support on
		its way the need for a generate_uri might not be as high.]

		Fixed bug in node's n3 function: URI -> URIRef.

		Replaced string based exceptions with class based exceptions.

		Added PyUnit TestCase for parser.py

		Added N-Triples parser.

		Added __len__ and __eq__ methods to store interface.


2002/06/04
		RELEASE 0.9.0

		Initial release after being split from redfootlib.