Class StringLength_1

    • Constructor Detail

      • StringLength_1

        public StringLength_1()
    • Method Detail

      • getIntegerBounds

        public IntegerValue[] getIntegerBounds()
        For an expression that returns an integer or a sequence of integers, get a lower and upper bound on the values of the integers that may be returned, from static analysis. The default implementation returns null, meaning "unknown" or "not applicable". Other implementations return an array of two IntegerValue objects, representing the lower and upper bounds respectively. The values UNBOUNDED_LOWER and UNBOUNDED_UPPER are used by convention to indicate that the value may be arbitrarily large. The values MAX_STRING_LENGTH and MAX_SEQUENCE_LENGTH are used to indicate values limited by the size of a string or the size of a sequence.
        Overrides:
        getIntegerBounds in class SystemFunction
        Returns:
        the lower and upper bounds of integer values in the result, or null to indicate unknown or not applicable.
      • resultWhenEmpty

        public ZeroOrOne resultWhenEmpty()
        Description copied from class: ScalarSystemFunction
        Method that may be supplied in subclasses, to indicate the result that is returned when an empty sequence is supplied as the argument value. The default is to return the empty sequence
        Overrides:
        resultWhenEmpty in class ScalarSystemFunction
        Returns:
        the result of evaluation when the supplied argument is an empty sequence
      • getCompilerName

        public java.lang.String getCompilerName()
        Description copied from class: SystemFunction
        Get the (local) name of a class that can be used to generate bytecode for this system function
        Overrides:
        getCompilerName in class SystemFunction
        Returns:
        the name of a bytecode generation class, or null if there is no bytecode support for this function