spv.spectrum.factory.GHRSFOS
Class GHRSFOSFileDescriptor

java.lang.Object
  spv.spectrum.factory.FileDescriptor
      spv.spectrum.factory.GHRSFOS.GHRSFOSFileDescriptor

public class GHRSFOSFileDescriptor
extends FileDescriptor

Class used to store and manipulate FileDescriptor objects that describe GHRS and FOS spectra. In this case the descriptor consists solely of the name of the flux file itself (.c1h) followed by the group(s) specification.

Version:

1.0 - 21Apr99

Author:

Ivo Busko (Space Telescope Science Institute)

Field Summary

private java.lang.String	name
private int	ngrp

Constructor Summary

GHRSFOSFileDescriptor(java.lang.String filename, int ngroups)
Constructor.

Method Summary

java.lang.String	getFileName() Returns the file name.
FileView	getFileView(SpectrumSelector ss, java.awt.Component comp) Returns a view (GUI) into the file.
java.lang.String	getLabelString() Returns the labeling string.
int	getNExtens() Returns the number of extensions in the file.
int	getNSpectra(int dummy) Returns the number of spectra stored in the file.
java.lang.String[]	getSpecRepresentation(int group, int ext) Returns a 1-line ASCII representation of the spectrum.
SpectrumSpecification	getSpectrumSpecification(java.net.URL url, int ext, int[] index) Returns a SpectrumSpecification object.

Methods inherited from class java.lang.Object

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

Field Detail

name

private java.lang.String name

ngrp

private int ngrp

Constructor Detail

GHRSFOSFileDescriptor

public GHRSFOSFileDescriptor(java.lang.String filename,
                             int ngroups)

Constructor.

Parameters:

filename - the file name with no qualifications

ngroups - the number of groups

Method Detail

getFileView

public FileView getFileView(SpectrumSelector ss,
                            java.awt.Component comp)

Returns a view (GUI) into the file. If no view exists, returns null.

Specified by:

getFileView in class FileDescriptor

Parameters:

ss - the spectrum selector that calls this

comp - the component used for screen positioning

Returns:

a view into the file, or null.

getSpectrumSpecification

public SpectrumSpecification getSpectrumSpecification(java.net.URL url,
                                                      int ext,
                                                      int[] index)

Returns a SpectrumSpecification object.

Specified by:

getSpectrumSpecification in class FileDescriptor

Parameters:

url - the URL

ext - ignored

index - array with FITS extension indices

Returns:

the SpectrumSpecification object

getLabelString

public java.lang.String getLabelString()

Returns the labeling string.

Specified by:

getLabelString in class FileDescriptor

Returns:

the labelling string

getFileName

public java.lang.String getFileName()

Returns the file name.

Specified by:

getFileName in class FileDescriptor

Returns:

the file name

getNExtens

public int getNExtens()

Returns the number of extensions in the file. In GHRS/FOS files this is always 1.

Specified by:

getNExtens in class FileDescriptor

Returns:

always 1

getNSpectra

public int getNSpectra(int dummy)

Returns the number of spectra stored in the file. In GHRS/FOS files this is the same as the number of groups in the file.

Specified by:

getNSpectra in class FileDescriptor

Parameters:

dummy - anything

Returns:

the number of groups

getSpecRepresentation

public java.lang.String[] getSpecRepresentation(int group,
                                                int ext)

Returns a 1-line ASCII representation of the spectrum. This consists for now of the group number only. If group is zero, returns the label string.

Specified by:

getSpecRepresentation in class FileDescriptor

Parameters:

group - the group number

ext - not used

Returns:

the string array with the representation.