# Uses of Package
org.apache.nutch.metadata

- Packages that use org.apache.nutch.metadata
  Package | Description
  --- | ---
  org.apache.nutch.indexer | Index content, configure and run indexing and cleaning jobs to add, update, and delete documents from an index.
  org.apache.nutch.metadata | A Multi-valued Metadata container, and set of constant fields for Nutch Metadata.
  org.apache.nutch.net.protocols | Helper classes related to the `Protocol` interface, see also `org.apache.nutch.protocol`.
  org.apache.nutch.parse | The `Parse` interface and related classes.
  org.apache.nutch.protocol | Classes related to the `Protocol` interface, see also `org.apache.nutch.net.protocols`.
  org.apache.nutch.protocol.htmlunit | Protocol plugin which supports retrieving documents via HTTP/HTTPS using Selenium and the HtmlUnitDriver web driver for the for the HtmlUnit headless browser.
  org.apache.nutch.protocol.http | Protocol plugin which supports retrieving documents via the http protocol.
  org.apache.nutch.protocol.httpclient | Protocol plugin which supports retrieving documents via the HTTP andHTTPS protocols, optionally with Basic, Digest and NTLM authentication schemes for web server as well as proxy server.
  org.apache.nutch.protocol.interactiveselenium | Protocol plugin which supports retrieving documents using and interacting with Selenium.
  org.apache.nutch.protocol.okhttp | Protocol plugin for HTTP/HTTPS based on okhttp, supports HTTP 1.1 and/or http/2.
  org.apache.nutch.protocol.selenium | Protocol plugin which supports retrieving documents via Selenium.
  org.apache.nutch.scoring.webgraph | Scoring implementation based on link analysis (`LinkRank`), see `WebGraph`.
  org.apache.nutch.segment | A segment stores all data from on generate/fetch/update cycle: fetch list, protocol status, raw content, parsed content, and extracted outgoing links.
  org.apache.nutch.tools | Miscellaneous tools.
  org.apache.nutch.tools.warc | Tools to import / export between Nutch segments and WARC archives.
  org.creativecommons.nutch | Sample plugins that parse and index Creative Commons metadata.

- Classes in org.apache.nutch.metadata used by org.apache.nutch.indexer
  Class | Description
  --- | ---
  Metadata | A multi-valued metadata container.

- Classes in org.apache.nutch.metadata used by org.apache.nutch.metadata
  Class | 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.
  Metadata | A multi-valued metadata container.
  Nutch | A collection of Nutch internal metadata constants.

- Classes in org.apache.nutch.metadata used by org.apache.nutch.net.protocols
  Class | Description
  --- | ---
  HttpHeaders | A collection of HTTP header names.
  Metadata | A multi-valued metadata container.

- Classes in org.apache.nutch.metadata used by org.apache.nutch.parse
  Class | Description
  --- | ---
  Metadata | A multi-valued metadata container.

- Classes in org.apache.nutch.metadata used by org.apache.nutch.protocol
  Class | Description
  --- | ---
  Metadata | A multi-valued metadata container.

- Classes in org.apache.nutch.metadata used by org.apache.nutch.protocol.htmlunit
  Class | Description
  --- | ---
  HttpHeaders | A collection of HTTP header names.
  Metadata | A multi-valued metadata container.

- Classes in org.apache.nutch.metadata used by org.apache.nutch.protocol.http
  Class | Description
  --- | ---
  HttpHeaders | A collection of HTTP header names.
  Metadata | A multi-valued metadata container.

- Classes in org.apache.nutch.metadata used by org.apache.nutch.protocol.httpclient
  Class | Description
  --- | ---
  HttpHeaders | A collection of HTTP header names.
  Metadata | A multi-valued metadata container.

- Classes in org.apache.nutch.metadata used by org.apache.nutch.protocol.interactiveselenium
  Class | Description
  --- | ---
  HttpHeaders | A collection of HTTP header names.
  Metadata | A multi-valued metadata container.

- Classes in org.apache.nutch.metadata used by org.apache.nutch.protocol.okhttp
  Class | Description
  --- | ---
  HttpHeaders | A collection of HTTP header names.
  Metadata | A multi-valued metadata container.

- Classes in org.apache.nutch.metadata used by org.apache.nutch.protocol.selenium
  Class | Description
  --- | ---
  HttpHeaders | A collection of HTTP header names.
  Metadata | A multi-valued metadata container.

- Classes in org.apache.nutch.metadata used by org.apache.nutch.scoring.webgraph
  Class | Description
  --- | ---
  Metadata | A multi-valued metadata container.

- Classes in org.apache.nutch.metadata used by org.apache.nutch.segment
  Class | Description
  --- | ---
  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`.

- Classes in org.apache.nutch.metadata used by org.apache.nutch.tools
  Class | Description
  --- | ---
  Metadata | A multi-valued metadata container.

- Classes in org.apache.nutch.metadata used by org.apache.nutch.tools.warc
  Class | Description
  --- | ---
  Metadata | A multi-valued metadata container.

- Classes in org.apache.nutch.metadata used by org.creativecommons.nutch
  Class | Description
  --- | ---
  Metadata | A multi-valued metadata container.