Package it.unibz.inf.ontop.iq.transformer

Interface BooleanExpressionPushDownTransformer

  • All Superinterfaces:
    IQTreeTransformer
    All Known Implementing Classes:
    BooleanExpressionPushDownTransformerImpl
    public interface BooleanExpressionPushDownTransformer
extends IQTreeTransformer
    Pushes down the expression as much as possible without creating new sub-queries (e.g. without creating a FILTER on the left of a LJ). In particular, it pushes down expressions in existing sub-queries (for instance inside children of a UNION)