Class ConcatenateFunction

  • All Implemented Interfaces:
    Expression, Function

    public class ConcatenateFunction
    extends FunctionImpl
    The function concatenates strings.

    It is used to create concatenated strings as arguments of functions.

    Implementation of Concatenate as defined by SE1.1.

    Author:
    Jody Garnett (Refractions Research, Inc.)
    • Field Detail

      • NAME

        public static final FunctionName NAME
        Make the instance of FunctionName available in a consistent spot.
    • Constructor Detail

      • ConcatenateFunction

        public ConcatenateFunction()
    • Method Detail

      • getArgCount

        public int getArgCount()
      • evaluate

        public Object evaluate​(Object feature)
        Description copied from class: FunctionImpl
        Default implementation simply returns the fallbackValue.

        Please override this method to produce a value based on the provided arguments.

        Specified by:
        evaluate in interface Expression
        Overrides:
        evaluate in class FunctionImpl
        Parameters:
        feature - Object being evaluated; often a Feature
        Returns:
        value for the provided object