Class ColFitsPlusTableBuilder

  • All Implemented Interfaces:
    uk.ac.starlink.table.TableBuilder

    public class ColFitsPlusTableBuilder
    extends java.lang.Object
    implements uk.ac.starlink.table.TableBuilder
    Implementation of the TableBuilder interface which reads tables stored in column-oriented FITS binary table format. The table data is stored in a BINTABLE extension which has a single row; each cell in this row contains the data for an entire column of the represented table. The primary HDU contains a byte[] array giving the table metadata as a VOTable, as for FitsPlusTableBuilder. If the VOTMETA card in the primary HDU does not have the value T, the VOTable metadata array is ignored.

    This rather specialised format may provide good performance for certain operations on very large, especially very wide, tables. Although it is FITS and can therefore be used in principle for data interchange, in practice most non-STIL processors are unlikely to be able to do much useful with it.

    Since:
    26 Jun 2006
    Author:
    Mark Taylor
    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean canImport​(java.awt.datatransfer.DataFlavor flavor)  
      java.lang.String getFormatName()  
      static boolean isMagic​(byte[] buffer)  
      boolean looksLikeFile​(java.lang.String location)  
      uk.ac.starlink.table.StarTable makeStarTable​(uk.ac.starlink.util.DataSource datsrc, boolean wantRandom, uk.ac.starlink.table.StoragePolicy policy)  
      void streamStarTable​(java.io.InputStream in, uk.ac.starlink.table.TableSink sink, java.lang.String pos)  
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • ColFitsPlusTableBuilder

        public ColFitsPlusTableBuilder()
        Default constructor.
      • ColFitsPlusTableBuilder

        public ColFitsPlusTableBuilder​(uk.ac.starlink.fits.WideFits wide)
        Constructor.
        Parameters:
        wide - convention for representing extended columns; use null to avoid use of extended columns
    • Method Detail

      • getFormatName

        public java.lang.String getFormatName()
        Specified by:
        getFormatName in interface uk.ac.starlink.table.TableBuilder
      • looksLikeFile

        public boolean looksLikeFile​(java.lang.String location)
        Specified by:
        looksLikeFile in interface uk.ac.starlink.table.TableBuilder
      • streamStarTable

        public void streamStarTable​(java.io.InputStream in,
                                    uk.ac.starlink.table.TableSink sink,
                                    java.lang.String pos)
                             throws uk.ac.starlink.table.TableFormatException
        Specified by:
        streamStarTable in interface uk.ac.starlink.table.TableBuilder
        Throws:
        uk.ac.starlink.table.TableFormatException
      • canImport

        public boolean canImport​(java.awt.datatransfer.DataFlavor flavor)
        Specified by:
        canImport in interface uk.ac.starlink.table.TableBuilder
      • makeStarTable

        public uk.ac.starlink.table.StarTable makeStarTable​(uk.ac.starlink.util.DataSource datsrc,
                                                            boolean wantRandom,
                                                            uk.ac.starlink.table.StoragePolicy policy)
                                                     throws java.io.IOException
        Specified by:
        makeStarTable in interface uk.ac.starlink.table.TableBuilder
        Throws:
        java.io.IOException
      • isMagic

        public static boolean isMagic​(byte[] buffer)