Package uk.ac.starlink.fits

Class FitsStarTable

  • All Implemented Interfaces:
    java.io.Closeable, java.lang.AutoCloseable, uk.ac.starlink.table.StarTable
    public class FitsStarTable
extends uk.ac.starlink.table.RandomStarTable
    An implementation of the StarTable interface which uses FITS TABLE or BINTABLE extensions.

    This implementation uses the table handling in the nom.tam.fits package. I think that performance could be considerably improved by rewriting the table access from scratch. The reason for this is largely that the nom.tam.fits classes do a lot of wrapping of values in (perhaps multi-dimensional) arrays, which is not for our purposes necessary. Such a re-implementation would take a bit of effort unfortunately.

    This class should only be used for TABLE extension (that is ASCII table) HDUs. The BintableStarTable class is much more efficient for BINTTABLE extensions (binary table) HDUs.

    Author:
    Mark Taylor (Starlink)

    • Constructor Summary

      Constructors 
      Constructor Description
      FitsStarTable​(nom.tam.fits.TableHDU thdu)
      Constructs a FitsStarTable object from a FITS TableHDU object.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.lang.Object getCell​(long lrow, int icol)  
      java.util.List<uk.ac.starlink.table.ValueInfo> getColumnAuxDataInfos()  
      int getColumnCount()  
      uk.ac.starlink.table.ColumnInfo getColumnInfo​(int icol)  
      java.lang.Object[] getRow​(long lrow)  
      long getRowCount()  

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

        getRowAccess, getRowSequence, isRandom

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

        checkedLongToInt, close, getName, getParameters, getRowSplittable, getURL, setName, setParameters, setURL

      • Methods inherited from class java.lang.Object

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

      • Methods inherited from interface uk.ac.starlink.table.StarTable

        getParameterByName, setParameter

    • Constructor Detail

      • FitsStarTable

        public FitsStarTable​(nom.tam.fits.TableHDU thdu)
              throws java.io.IOException
        Constructs a FitsStarTable object from a FITS TableHDU object.
        Parameters:
        thdu - a TableHDU object containing data
        Throws:
        java.io.IOException

    • Method Detail

      • getRowCount

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

      • getColumnCount

        public int getColumnCount()
        Specified by:
        getColumnCount in interface uk.ac.starlink.table.StarTable
        Specified by:
        getColumnCount in class uk.ac.starlink.table.AbstractStarTable

      • getColumnInfo

        public uk.ac.starlink.table.ColumnInfo getColumnInfo​(int icol)
        Specified by:
        getColumnInfo in interface uk.ac.starlink.table.StarTable
        Specified by:
        getColumnInfo in class uk.ac.starlink.table.AbstractStarTable

      • getColumnAuxDataInfos

        public java.util.List<uk.ac.starlink.table.ValueInfo> getColumnAuxDataInfos()
        Specified by:
        getColumnAuxDataInfos in interface uk.ac.starlink.table.StarTable
        Overrides:
        getColumnAuxDataInfos in class uk.ac.starlink.table.AbstractStarTable

      • getCell

        public java.lang.Object getCell​(long lrow,
                                int icol)
                         throws java.io.IOException
        Specified by:
        getCell in interface uk.ac.starlink.table.StarTable
        Specified by:
        getCell in class uk.ac.starlink.table.RandomStarTable
        Throws:
        java.io.IOException

      • getRow

        public java.lang.Object[] getRow​(long lrow)
                          throws java.io.IOException
        Specified by:
        getRow in interface uk.ac.starlink.table.StarTable
        Overrides:
        getRow in class uk.ac.starlink.table.AbstractStarTable
        Throws:
        java.io.IOException