# Package org.apache.nutch.metadata

A Multi-valued Metadata container, and set of constant fields for Nutch Metadata.

- Interface Summary
  Interface | Description
  --- | ---
  CreativeCommons | A collection of Creative Commons properties names.
  DublinCore | A collection of Dublin Core metadata names.
  Feed | A collection of Feed property names extracted by the ROME library.
  HttpHeaders | A collection of HTTP header names.
  Nutch | A collection of Nutch internal metadata constants.

- Class Summary
  Class | Description
  --- | ---
  CaseInsensitiveMetadata | A decorator to Metadata that adds for case-insensitive lookup of keys.
  Metadata | A multi-valued metadata container.
  MetaWrapper | This is a simple decorator that adds metadata to any Writable-s that can be serialized by `NutchWritable`.
  SpellCheckedMetadata | A decorator to Metadata that adds spellchecking capabilities to property names.