Package uk.ac.starlink.ttools.filter

Class AddColumnFilter

java.lang.Object
uk.ac.starlink.ttools.filter.BasicFilter
uk.ac.starlink.ttools.filter.AddColumnFilter
All Implemented Interfaces:
ProcessingFilter
public class AddColumnFilter extends BasicFilter
Table filter for adding a single synthetic column.
Since:
3 Mar 2005
Author:
Mark Taylor

  • Constructor Details

    • AddColumnFilter

      public AddColumnFilter()

  • Method Details

    • getDescriptionLines

      protected String[] getDescriptionLines()
      Specified by:
      getDescriptionLines in class BasicFilter

    • createStep

      public ProcessingStep createStep(Iterator<String> argIt) throws ArgException
      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
      Throws:
      ArgException

    • checkDuplicatedName

      public static void checkDuplicatedName(uk.ac.starlink.table.StarTable table, int icol0)
      Checks that a given column in a table does not have the same name as any of the other columns in the table. If it does (even case-insensitively), a warning is written through the logging system.
      Parameters:
      table - table to check
      icol0 - column index to check