Class ProcessFunctionFactory

  • All Implemented Interfaces:
    FunctionFactory

    public class ProcessFunctionFactory
    extends Object
    implements FunctionFactory
    A bridge between the process world and the filter function world: any process returning a single value can be seen as a filter function
    Author:
    Andrea Aime - GeoSolutions
    • Field Detail

      • PRIMARY_OUTPUT

        public static final String PRIMARY_OUTPUT
        Parameter used to indicate a certain output is the primary one for the process
        See Also:
        Constant Field Values
    • Constructor Detail

      • ProcessFunctionFactory

        public ProcessFunctionFactory()
    • Method Detail

      • function

        public Function function​(String name,
                                 List<Expression> args,
                                 Literal fallback)
        Description copied from interface: FunctionFactory
        Returns a function with the specified name.
        Specified by:
        function in interface FunctionFactory
        Parameters:
        name - The name of the function
        args - Variable list of expression arguments for the function.
        fallback - A fallback literal to use in cases where the function does not exist or can not be created. This argument may be null.
      • function

        public Function function​(Name processName,
                                 List<Expression> args,
                                 Literal fallback)
        Description copied from interface: FunctionFactory
        Returns a function with the specified name.
        Specified by:
        function in interface FunctionFactory
        Parameters:
        processName - The name of the function
        args - Variable list of expression arguments for the function.
        fallback - A fallback literal to use in cases where the function does not exist or can not be created. This argument may be null.
      • clear

        public void clear()
        Clears the caches forcing the system to do another lookup