visad.data
Interface MetadataReader

All Known Implementing Classes:

LociForm

public interface MetadataReader

MetadataReader is the VisAD interface for reading in a file's associated metadata (other than pixel data).

Method Summary

Hashtable	getMetadata(String id) Obtains a hashtable containing all metadata field/value pairs from the given file.
Object	getMetadataValue(String id, String field) Obtains the specified metadata field's value for the given file.

Method Detail

getMetadataValue

public Object getMetadataValue(String id,
                               String field)
                        throws BadFormException,
                               IOException,
                               VisADException

Obtains the specified metadata field's value for the given file.

Parameters:

field - the name associated with the metadata field

Returns:

the value, or null should the field not exist

Throws:

BadFormException

IOException

VisADException

getMetadata

public Hashtable getMetadata(String id)
                      throws BadFormException,
                             IOException,
                             VisADException

Obtains a hashtable containing all metadata field/value pairs from the given file.

Parameters:

id - the filename

Returns:

the hashtable containing all metadata associated with the file

Throws:

BadFormException

IOException

VisADException