Class AbstractTableData

java.lang.Object

nom.tam.fits.Data

nom.tam.fits.AbstractTableData

All Implemented Interfaces:

FitsElement, TableData

Direct Known Subclasses:

AsciiTable, BinaryTable

@Deprecated
public abstract class AbstractTableData
extends Data
implements TableData

Deprecated.

Serves no purpose really. It can be removed in the future, letting AsciiTable extend Data and implement TableData instead.

Just an abstract class to reuse the myData in all subclasses of the HDU's.

Author:

Richard van Nieuwenhoven

Method Summary

Methods inherited from class Data

calcChecksum, detach, getData, getFileOffset, getKernel, getSize, isDeferred, isEmpty, read, reset, rewrite, rewriteable, toHDU, write

Modifier and Type	Method	Description
long	calcChecksum()	Computes and returns the FITS checksum for this data, for example to compare against the stored DATASUM in the FITS header (e.g. via BasicHDU.getStoredDatasum()).
void	detach()	Detaches this data object from the input (if any), such as a file or stream, but not before loading data from the previously assigned input into memory.
Object	getData()	Returns the underlying Java representation of the data contained in this HDU's data segment.
long	getFileOffset()	Returns the byte offset at which this element starts ina file.
final Object	getKernel()	Same as Data.getData().
long	getSize()	Returns the size of this elements in the FITS representation.
boolean	isDeferred()	Checks if the data should be assumed to be in deferred read mode.
boolean	isEmpty()	Checks if the data content is currently empty, i.e. no actual data is currently stored in memory.
void	read(ArrayDataInput in)	Reads the data or skips over it for reading later, depending on whether reading from a stream or a random acessible input, respectively.
boolean	reset()	Reset the input stream to point to the beginning of this element
void	rewrite()	Rewrite the contents of the element in place.
boolean	rewriteable()	Checks if we can write this element back to its source.
abstract BasicHDU<?>	toHDU()	Returns an approprotae HDU object that encapsulates this FITS data, and contains the minimal mandatory header description for that data.
abstract void	write(ArrayDataOutput o)	Writes the contents of the element to a data sink, adding padding as necessary if the element (such as a header or data segment) is expected to complete the FITS block of 2880 bytes.

Methods inherited from class Object

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

Methods inherited from interface TableData

addColumn, addRow, addRowEntries, deleteColumns, deleteRows, getColumn, getElement, getNCols, getNRows, getRow, setColumn, setElement, setRow, setRowEntries, updateAfterDelete

Modifier and Type	Method	Description
int	addColumn(Object newCol)	Add a column to the table, without updating the header of an encompassing HDU.
int	addRow(Object[] newRow)	Add a row at the end of the table without updating the header of an encompassing HDU.
default int	addRowEntries(Object... entries)	Like TableData.addRow(Object[]), but with a vararg list of row entries.
void	deleteColumns(int col, int len)	Removes a set of consecutive columns from this table, without updating assocu=iated the header information for the columns that were removed.
void	deleteRows(int row, int len)	Removes a set of consecutive rows from this table without updating any associated header information for an encompassing HDU.
Object	getColumn(int col)	Returns the data for a particular column in as an array of elements.
Object	getElement(int row, int col)	Returns the data element in this table.
int	getNCols()	Returns the number of columns contained in this table.
int	getNRows()	Returns the number of columns contained in this table.
Object[]	getRow(int row)	Returns an array of elements in a particualr table row.
void	setColumn(int col, Object newCol)	Sets new data for a table column.
void	setElement(int row, int col, Object element)	Sets new data element in this table.
void	setRow(int row, Object[] newRow)	Sets new data for a table row.
default void	setRowEntries(int row, Object... entries)	Like TableData.setRow(int, Object[]) but with vararg list of entries.
void	updateAfterDelete(int oldNcol, Header hdr)	Deprecated. It is not entirely foolproof for keeping the header in sync -- it is better to (re)wrap tables in a new HDU after column deletions, and then edit the new header as necessary to incorporate custom entries.