Package mondrian.rolap.agg

Class MinusStarPredicate

  • All Implemented Interfaces:
    StarColumnPredicate, StarPredicate
    public class MinusStarPredicate
extends AbstractColumnPredicate
    A StarPredicate which evaluates to true if its first child evaluates to true and its second child evaluates to false.
    Since:
    Nov 6, 2006
    Author:
    jhyde

    • Constructor Detail

      • MinusStarPredicate

        public MinusStarPredicate​(StarColumnPredicate plus,
                          StarColumnPredicate minus)
        Creates a MinusStarPredicate.
        Parameters:
        plus - Positive predicate
        minus - Negative predicate

    • Method Detail

      • hashCode

        public int hashCode()
        Overrides:
        hashCode in class Object

      • values

        public void values​(Collection<Object> collection)
        Description copied from interface: StarColumnPredicate
        Adds the values in this constraint to a collection.
        Parameters:
        collection - Collection to add values to

      • evaluate

        public boolean evaluate​(Object value)
        Description copied from interface: StarColumnPredicate
        Returns whether this constraint would return true for a given value.
        Parameters:
        value - Value
        Returns:
        Whether predicate is true

      • describe

        public void describe​(StringBuilder buf)
        Description copied from interface: StarPredicate
        Appends a description of this predicate to a StringBuilder. For example:
        • =any
        • =5
        • in (2, 4, 6)
        Parameters:
        buf - Builder to append to

      • intersect

        public StarColumnPredicate.Overlap intersect​(StarColumnPredicate predicate)
        Description copied from interface: StarColumnPredicate
        Applies this predicate to a predicate from the axis of a segment, and tests for overlap. The result might be that there is no overlap, full overlap (so the constraint can be removed), or partial overlap (so the constraint will need to be replaced with a stronger constraint, say 'x > 10' is replaced with 'x > 20').
        Parameters:
        predicate - Predicate
        Returns:
        description of overlap between predicates, if any

      • mightIntersect

        public boolean mightIntersect​(StarPredicate other)
        Description copied from interface: StarColumnPredicate
        Returns whether this predicate might intersect another predicate. That is, whether there might be a value which holds true for both constraints.
        Parameters:
        other - Other constraint
        Returns:
        Whether constraints intersect

      • minus

        public StarColumnPredicate minus​(StarPredicate predicate)
        Description copied from interface: StarPredicate
        Returns the logical inverse of this Predicate. The result is a Predicate which holds whenever this predicate holds but the other does not.
        Parameters:
        predicate - Predicate
        Returns:
        Combined predicate