visad.data.mcidas
Class AreaForm

java.lang.Object
  visad.data.FormNode
      visad.data.Form
          visad.data.mcidas.AreaForm

All Implemented Interfaces:

FormFileInformer

public class AreaForm
extends Form
implements FormFileInformer

to allow determination of whether a file is of type McIDAS 'area'.

Field Summary

Fields inherited from class visad.data.Form

mathType

Constructor Summary

AreaForm()

Method Summary

void	add(String id, Data data, boolean replace) This has not been implemented
String[]	getDefaultSuffixes() return a list of suffixes associated with this file type
FormNode	getForms(Data data) not implemented yet
boolean	isThisType(byte[] block) there is no unique way to identify an AREA file by examining the contents of the first block of data values
boolean	isThisType(String name) determine the file type by name.
DataImpl	open(String path) read the area file from local disk, and return the Area file as a DataImpl object (a FlatField).
DataImpl	open(URL url) read the area file from a URL, and return the Area file as a DataImpl object (a FlatField).
void	save(String id, Data data, boolean replace) save the file back to disk This has not been implemented yet

Methods inherited from class visad.data.Form

getMathType

Methods inherited from class visad.data.FormNode

getName

Methods inherited from class java.lang.Object

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

Constructor Detail

AreaForm

public AreaForm()

Method Detail

isThisType

public boolean isThisType(String name)

determine the file type by name. McIDAS area files begin with the letters: AREA (or area).

Specified by:

isThisType in interface FormFileInformer

Parameters:

name - is the filename in question

Returns:

true if the name is right for this type of form

isThisType

public boolean isThisType(byte[] block)

there is no unique way to identify an AREA file by examining the contents of the first block of data values

Specified by:

isThisType in interface FormFileInformer

Parameters:

block - is an array of ? length from the beginning of the file in question.

Returns:

true if the magic number is right

getDefaultSuffixes

public String[] getDefaultSuffixes()

return a list of suffixes associated with this file type

Specified by:

getDefaultSuffixes in interface FormFileInformer

Returns:

array of suffixes

save

public void save(String id,
                 Data data,
                 boolean replace)
          throws BadFormException,
                 IOException,
                 RemoteException,
                 VisADException

save the file back to disk This has not been implemented yet

Specified by:

save in class FormNode

Throws:

BadFormException

IOException

RemoteException

VisADException

add

public void add(String id,
                Data data,
                boolean replace)
         throws BadFormException

This has not been implemented

Specified by:

add in class FormNode

Throws:

BadFormException

open

public DataImpl open(String path)
              throws BadFormException,
                     RemoteException,
                     VisADException

read the area file from local disk, and return the Area file as a DataImpl object (a FlatField).

Specified by:

open in class FormNode

Parameters:

path - is the fully-qualified pathname

Throws:

BadFormException

RemoteException

VisADException

open

public DataImpl open(URL url)
              throws BadFormException,
                     VisADException,
                     IOException

read the area file from a URL, and return the Area file as a DataImpl object (a FlatField).

Specified by:

open in class FormNode

Parameters:

url - is the fully-formed URL

Throws:

BadFormException

VisADException

IOException

getForms

public FormNode getForms(Data data)

not implemented yet

Specified by:

getForms in class FormNode