com.drew.metadata
Interface MetadataReader

All Known Implementing Classes:

ExifReader, IptcReader, JpegCommentReader, JpegReader

public interface MetadataReader

Interface through which all classes responsible for decoding a particular type of metadata may be called. Note that the data source is not specified on this interface. Instead it is suggested that implementations take their data within a constructor. Constructors might be overloaded to allow for different sources, such as files, streams and byte arrays. As such, instances of implementations of this interface would be single-use and not threadsafe.

Method Summary

Metadata	extract() Deprecated. Use the overload that takes a Metadata object instead
Metadata	extract(Metadata metadata) Extract metadata from the source and merge it into an existing Metadata object.

Method Detail

extract

Metadata extract()

Deprecated. Use the overload that takes a Metadata object instead

Create a new Metadata instance and return it, populated with whatever directories this MetadataReader implementation is responsible for.

Returns:

The populated Metadata object.

extract

Metadata extract(Metadata metadata)

Extract metadata from the source and merge it into an existing Metadata object.

Returns:

The updated Metadata object.