Package uk.ac.starlink.ttools.task

Class ColumnSelectionMapper

  • All Implemented Interfaces:
    TableMapper
    public class ColumnSelectionMapper
extends java.lang.Object
implements TableMapper
    Mapper which operates on a user-supplied selection of the columns of the input table.
    Since:
    9 May 2006
    Author:
    Mark Taylor

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      TableMapping createMapping​(uk.ac.starlink.task.Environment env, int nin)
      Creates a new mapping object, using a given execution environment for any additional required state.
      WordsParameter getColumnsParameter()
      Returns the parameter which specifies the column IDs for use.
      uk.ac.starlink.task.Parameter<?>[] getParameters()
      Returns the parameters defined by this mapper.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • ColumnSelectionMapper

        public ColumnSelectionMapper()
        Constructor.

    • Method Detail

      • getParameters

        public uk.ac.starlink.task.Parameter<?>[] getParameters()
        Description copied from interface: TableMapper
        Returns the parameters defined by this mapper.
        Specified by:
        getParameters in interface TableMapper
        Returns:
        parameter array

      • createMapping

        public TableMapping createMapping​(uk.ac.starlink.task.Environment env,
                                  int nin)
                           throws uk.ac.starlink.task.TaskException
        Description copied from interface: TableMapper
        Creates a new mapping object, using a given execution environment for any additional required state.
        Specified by:
        createMapping in interface TableMapper
        Parameters:
        env - execution environment
        nin - number of input tables that the mapping will operate on if known; -1 if not
        Throws:
        uk.ac.starlink.task.TaskException

      • getColumnsParameter

        public WordsParameter getColumnsParameter()
        Returns the parameter which specifies the column IDs for use.
        Returns:
        column list parameter