Class UniqueFilter

  • All Implemented Interfaces:
    ProcessingFilter

    public class UniqueFilter
    extends BasicFilter
    Filters out rows which are identical in some or all columns.
    Since:
    27 Apr 2006
    Author:
    Mark Taylor
    • Constructor Detail

      • UniqueFilter

        public UniqueFilter()
    • Method Detail

      • createStep

        public ProcessingStep createStep​(java.util.Iterator<java.lang.String> argIt)
        Description copied from interface: ProcessingFilter
        Creates a new ProcessingStep based on a sequence of command-line arguments. The argIt argument is an iterator over the command-line arguments positioned just before any arguments intended for this filter. If legal, any that can be comprehended by this filter should be read (iterated over) and removed, and a ProcessingStep should accordingly be returned. In the case of a successful return, it is essential that no arguments other than the ones intended for this filter are read from the iterator.

        If the argument list is badly-formed as far as this filter is concerned, an ArgException should be thrown.

        Parameters:
        argIt - iterator over command-line arguments positioned at the first one