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    Function createFilterFalse

    • Creates the FILTER(FALSE) that represents an empty result set: in SPARQL algebra the empty multiset, absorbing for JOIN and identity for UNION.

      Parameters

      • c: TransformationContext

        The transformation context

      • Optionalop: Operation

        The operation it replaces, kept as its input so that the node carries that operation's pVars; an empty BGP by default, which carries none

      Returns Filter

      the filter

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