This release of TDB includes a pattern optimizer:
http://jena.hpl.hp.com/wiki/TDB/Optimizer


TDB 0.6.0 requires ARQ 2.5.0.

TDB 0.6:

+ Optimizer

+ Fixes for concurrency problems over 0.5

+ Maven and ant/ivy release includes linked source code

ARQ 2.5:

+ Redesign of quad support.
AlgebraGeneratorQuad retired
Use Algebra.toQuadForm(Op) to turn an algebra expression into quads.

+ fn:string-join was misnamed - renamed as fn:concat
And now takes arbitrary number of arguments

+ Add afn:strjoin(str, string...)

+ Bug fix: path parsing when "a" (for rdf:type)
is used in a property list (using ;)

+ Bug fix: LET expressions did not eliminate solutions when
assigned a new, different value.

+ Internal renaming to make the class names better reflect their role
particularly not using the term "compile" for things now considered
to happen during query execution.

+ Internal utilities updated for TDB

+ Signal start/end of updates using the graph-level events mechanism.

+ Maven version now named "2.5.0"

Andy


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