Package uk.ac.starlink.topcat

Class SubsetStarTable

  • All Implemented Interfaces:
    java.io.Closeable, java.lang.AutoCloseable, uk.ac.starlink.table.StarTable
    public class SubsetStarTable
extends uk.ac.starlink.table.WrapperStarTable
    StarTable that applies a row subset selection to a given input table. This implementation is not random access, but does supply a non-trivial RowSplittable.
    Since:
    14 Dec 2020
    Author:
    Mark Taylor

    • Field Summary

      • Fields inherited from class uk.ac.starlink.table.WrapperStarTable

        baseTable

    • Constructor Summary

      Constructors 
      Constructor Description
      SubsetStarTable​(uk.ac.starlink.table.StarTable base, RowSubset rset)
      Constructor.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      static uk.ac.starlink.table.StarTable createTable​(uk.ac.starlink.table.StarTable table, RowSubset rset)
      Returns a table with row selection characteristics matching those of the given subset.
      java.lang.Object getCell​(long irow, int icol)  
      java.lang.Object[] getRow​(long irow)  
      uk.ac.starlink.table.RowAccess getRowAccess()  
      long getRowCount()  
      uk.ac.starlink.table.RowSequence getRowSequence()  
      uk.ac.starlink.table.RowSplittable getRowSplittable()
      Note the row index reflects the index in the underlying table, not that of the subset table.
      boolean isRandom()  

      • Methods inherited from class uk.ac.starlink.table.WrapperStarTable

        checkedLongToInt, close, getBaseTable, getColumnAuxDataInfos, getColumnCount, getColumnInfo, getName, getParameterByName, getParameters, getURL, setName, setParameter, setURL, toString

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • SubsetStarTable

        public SubsetStarTable​(uk.ac.starlink.table.StarTable base,
                       RowSubset rset)
        Constructor.
        Parameters:
        base - table supplying row data
        rset - subset defining row inclusion

    • Method Detail

      • isRandom

        public boolean isRandom()
        Specified by:
        isRandom in interface uk.ac.starlink.table.StarTable
        Overrides:
        isRandom in class uk.ac.starlink.table.WrapperStarTable

      • getRowCount

        public long getRowCount()
        Specified by:
        getRowCount in interface uk.ac.starlink.table.StarTable
        Overrides:
        getRowCount in class uk.ac.starlink.table.WrapperStarTable

      • getCell

        public java.lang.Object getCell​(long irow,
                                int icol)
        Specified by:
        getCell in interface uk.ac.starlink.table.StarTable
        Overrides:
        getCell in class uk.ac.starlink.table.WrapperStarTable

      • getRow

        public java.lang.Object[] getRow​(long irow)
        Specified by:
        getRow in interface uk.ac.starlink.table.StarTable
        Overrides:
        getRow in class uk.ac.starlink.table.WrapperStarTable

      • getRowAccess

        public uk.ac.starlink.table.RowAccess getRowAccess()
        Specified by:
        getRowAccess in interface uk.ac.starlink.table.StarTable
        Overrides:
        getRowAccess in class uk.ac.starlink.table.WrapperStarTable

      • getRowSequence

        public uk.ac.starlink.table.RowSequence getRowSequence()
                                                throws java.io.IOException
        Specified by:
        getRowSequence in interface uk.ac.starlink.table.StarTable
        Overrides:
        getRowSequence in class uk.ac.starlink.table.WrapperStarTable
        Throws:
        java.io.IOException

      • getRowSplittable

        public uk.ac.starlink.table.RowSplittable getRowSplittable()
                                                    throws java.io.IOException
        Note the row index reflects the index in the underlying table, not that of the subset table.
        Specified by:
        getRowSplittable in interface uk.ac.starlink.table.StarTable
        Overrides:
        getRowSplittable in class uk.ac.starlink.table.WrapperStarTable
        Throws:
        java.io.IOException

      • createTable

        public static uk.ac.starlink.table.StarTable createTable​(uk.ac.starlink.table.StarTable table,
                                                         RowSubset rset)
        Returns a table with row selection characteristics matching those of the given subset.