Class AsciiTableStarTable

java.lang.Object
uk.ac.starlink.table.AbstractStarTable
uk.ac.starlink.fits.AsciiTableStarTable
All Implemented Interfaces:
Closeable, AutoCloseable, uk.ac.starlink.table.StarTable
public abstract class AsciiTableStarTable extends uk.ac.starlink.table.AbstractStarTable
StarTable implementation for FITS (ASCII) TABLE extensions.
Since:
4 Mar 2022
Author:
Mark Taylor

  • Constructor Summary

    Constructors
    Constructor
    Description
    AsciiTableStarTable(FitsHeader hdr)
    Constructor.

  • Method Summary

    Modifier and Type
    Method
    Description
    static AsciiTableStarTable
    createTable(FitsHeader hdr, InputFactory inputFact)
    Creates a table instance from a TABLE HDU.
    int
    getColumnCount()
     
    uk.ac.starlink.table.ColumnInfo
    getColumnInfo(int icol)
     
    protected int[]
    getColumnLengths()
    Returns the array of column lengths in bytes.
    protected int[]
    getColumnOffsets()
    Returns the array of column offsets from the start of the row.
    long
    getRowCount()
     
    protected int
    getRowLength()
    Returns the length of each row in bytes.
    protected Object
    readCell(byte[] cellBuf, int icol)
    Reads the content of a cell of this table from a byte buffer.
    protected Object[]
    readRow(byte[] rowBuf)
    Reads the content of a row of this table from a byte buffer.
    static void
    streamStarTable(FitsHeader hdr, BasicInput input, uk.ac.starlink.table.TableSink sink)
    Reads a TABLE HDU from a stream and writes the result to a table sink.

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

    checkedLongToInt, close, getCell, getColumnAuxDataInfos, getName, getParameters, getRow, getRowAccess, getRowSequence, getRowSplittable, getURL, isRandom, setName, setParameters, setURL

    Methods inherited from class Object

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

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

    getParameterByName, setParameter

  • Constructor Details

    • AsciiTableStarTable

      public AsciiTableStarTable(FitsHeader hdr) throws IOException
      Constructor.
      Parameters:
      hdr - ASCII TABLE extension header
      Throws:
      IOException

  • Method Details

    • getRowCount

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

    • 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

    • getRowLength

      protected int getRowLength()
      Returns the length of each row in bytes.
      Returns:
      row length

    • getColumnOffsets

      protected int[] getColumnOffsets()
      Returns the array of column offsets from the start of the row.
      Returns:
      ncol-length array of byte offsets from row start

    • getColumnLengths

      protected int[] getColumnLengths()
      Returns the array of column lengths in bytes.
      Returns:
      ncol-length array of field byte lengths

    • readRow

      protected Object[] readRow(byte[] rowBuf)
      Reads the content of a row of this table from a byte buffer.
      Parameters:
      rowBuf - buffer containing rowLeng bytes
      Returns:
      ncol-element array of cell values

    • readCell

      protected Object readCell(byte[] cellBuf, int icol)
      Reads the content of a cell of this table from a byte buffer.
      Parameters:
      cellBuf - buffer containing bytes for column content
      icol - column index
      Returns:
      cell value

    • createTable

      public static AsciiTableStarTable createTable(FitsHeader hdr, InputFactory inputFact) throws IOException
      Creates a table instance from a TABLE HDU.
      Parameters:
      hdr - FITS header for ASCII table
      inputFact - input factory for Data part of HDU
      Returns:
      new table; it will be random-access according to whether the input factory is
      Throws:
      IOException

    • streamStarTable

      public static void streamStarTable(FitsHeader hdr, BasicInput input, uk.ac.starlink.table.TableSink sink) throws IOException
      Reads a TABLE HDU from a stream and writes the result to a table sink.
      Parameters:
      hdr - FITS header object describing the TABLE extension
      input - input stream positioned at the start of the data part of the TABLE extension
      sink - destination for the table
      Throws:
      IOException

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