Class GeometryFunctionOperation

  • All Implemented Interfaces:
    GeometryOperation

    public class GeometryFunctionOperation
    extends Object
    implements GeometryOperation
    Invokes a function from registry or a Geometry method determined by a named operation with a list of arguments, the first of which is a Geometry. This class allows overriding Geometry methods or augmenting them with functions defined in a GeometryFunctionRegistry.
    Version:
    1.7
    Author:
    Martin Davis
    • Constructor Detail

      • GeometryFunctionOperation

        public GeometryFunctionOperation()
    • Method Detail

      • getReturnType

        public Class getReturnType​(String opName)
        Description copied from interface: GeometryOperation
        Gets the class of the return type of the given operation.
        Specified by:
        getReturnType in interface GeometryOperation
        Parameters:
        opName - the name of the operation
        Returns:
        the class of the return type of the specified operation
      • invoke

        public Result invoke​(String opName,
                             Geometry geometry,
                             Object[] args)
                      throws Exception
        Description copied from interface: GeometryOperation
        Invokes an operation on a Geometry.
        Specified by:
        invoke in interface GeometryOperation
        Parameters:
        opName - name of the operation
        geometry - the geometry to process
        args - the arguments to the operation (which may be typed as Strings)
        Returns:
        the result of the operation
        Throws:
        Exception - if some error was encountered trying to find or process the operation