Remove warning on unused import

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JENA-678

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JENA-677

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Applying patch from JENA-679

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Apply Andy's revised patch for constant folding (JENA-630)

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Added additional test cases that pertain to JENA-628.  This is a sanitized version of a customer query in our regression suite where the changed filter placement behaviour broke the query when using the don't break BGPs mode.  As part of adding this test case I also found and fixed a case where filter pushing was not respecting the includeBGPs flag when considering whether to push into quadpatterns

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Remove spurious System.out.println() that I'd been using for debugging

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JENA-682 : Update to Apache Parent POM v14

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Remove unused import

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Remove warning (no @Override on interface method)

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JENA-685 : Don't try to reorder pattern of 0 or 1 triple patterns

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JENA-684 : Move join code out of the Table interface.

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JENA-684 : The test code.
Rename TableLib to TableJoin in engine package.

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JENA-685: Update the fixed weight BGP reorder code

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JENA-685: Update the fixed weight BGP reorder code

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JENA-685 test code

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Remove stray directory

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Close iterators explicitly and properly

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JENA-681 : Put back the original filter placement code as TransformFilterPlacementConservative.
Alternative filter placement transformation.
Not used by default.



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