com.drew.metadata
Class TagDescriptor
java.lang.Object
com.drew.metadata.TagDescriptor
- Serializable
public abstract class TagDescriptor
extends java.lang.Object
implements Serializable
Abstract base class for all tag descriptor classes. Implementations are responsible for
providing the human-readable string represenation of tag values stored in a directory.
The directory is provided to the tag descriptor via its constructor.
abstract String | getDescription(int tagType) - Returns a descriptive value of the the specified tag for this image.
|
_directory
protected final Directory _directory
TagDescriptor
public TagDescriptor(Directory directory)
getDescription
public abstract String getDescription(int tagType)
throws MetadataException
Returns a descriptive value of the the specified tag for this image.
Where possible, known values will be substituted here in place of the raw
tokens actually kept in the Exif segment. If no substitution is
available, the value provided by getString(int) will be returned.
This and getString(int) are the only 'get' methods that won't throw an
exception.
tagType
- the tag to find a description for
- a description of the image's value for the specified tag, or
null
if the tag hasn't been defined.
Copyright © 2006 Drew Noakes. All Rights Reserved.