# Uses of Package
org.apache.nutch.plugin

- Packages that use org.apache.nutch.plugin
  Package | Description
  --- | ---
  org.apache.nutch.analysis.lang | Text document language identifier.
  org.apache.nutch.any23 | This packages uses the Apache Any23 library for parsing and extracting structured data in RDF format from a variety of Web documents.
  org.apache.nutch.collection | Subcollection is a subset of an index.
  org.apache.nutch.exchange | Control code for exchange component, which acts in indexing job and decides to which index writer a document should be routed, based on plugins behavior.
  org.apache.nutch.exchange.jexl | Plugin of Exchange component based on JEXL expressions.
  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.indexer.anchor | An indexing plugin for inbound anchor text.
  org.apache.nutch.indexer.basic | A basic indexing plugin, adds basic fields: url, host, title, content, etc.
  org.apache.nutch.indexer.feed | Indexing filter to index meta data from RSS feeds.
  org.apache.nutch.indexer.filter |
  org.apache.nutch.indexer.geoip | This plugin implements an indexing filter which takes advantage of the GeoIP2-java API.
  org.apache.nutch.indexer.jexl | This plugin implements a dynamic indexing filter which uses JEXL expressions to allow filtering based on the page's metadata
  org.apache.nutch.indexer.links |
  org.apache.nutch.indexer.metadata | Indexing filter to add document metadata to the index.
  org.apache.nutch.indexer.more | A more indexing plugin, adds "more" index fields: last modified date, MIME type, content length.
  org.apache.nutch.indexer.replace | Indexing filter to allow pattern replacements on metadata.
  org.apache.nutch.indexer.staticfield | A simple plugin called at indexing that adds fields with static data.
  org.apache.nutch.indexer.subcollection | Indexing filter to assign documents to subcollections.
  org.apache.nutch.indexer.tld | Top Level Domain Indexing plugin.
  org.apache.nutch.indexer.urlmeta | URL Meta Tag Indexing Plugin
  org.apache.nutch.indexwriter.cloudsearch |
  org.apache.nutch.indexwriter.csv | Index writer plugin to write a plain CSV file.
  org.apache.nutch.indexwriter.dummy | Index writer plugin for debugging, writes pairs of <action, url> to a text file, action is one of "add", "update", or "delete".
  org.apache.nutch.indexwriter.elastic | Index writer plugin for Elasticsearch.
  org.apache.nutch.indexwriter.kafka | Index writer plugin to produce JSON messages to Kafka.
  org.apache.nutch.indexwriter.rabbit |
  org.apache.nutch.indexwriter.solr | Index writer plugin for Apache Solr.
  org.apache.nutch.microformats.reltag | A microformats Rel-Tag Parser/Indexer/Querier plugin.
  org.apache.nutch.net | Web-related interfaces: URL `filters` and `normalizers`.
  org.apache.nutch.parse | The `Parse` interface and related classes.
  org.apache.nutch.parse.ext | Parse wrapper to run external command to do the parsing.
  org.apache.nutch.parse.feed | Parse RSS feeds.
  org.apache.nutch.parse.headings | Parse filter to extract headings (h1, h2, etc.) from DOM parse tree.
  org.apache.nutch.parse.html | An HTML document parsing plugin.
  org.apache.nutch.parse.js | Parser and parse filter plugin to extract all (possible) links from JavaScript files and embedded JavaScript code snippets.
  org.apache.nutch.parse.metatags | Parse filter to extract meta tags: keywords, description, etc.
  org.apache.nutch.parse.swf | Parse Flash SWF files.
  org.apache.nutch.parse.tika | Parse various document formats with help of Apache Tika.
  org.apache.nutch.parse.zip | Parse ZIP files: embedded files are recursively passed to appropriate parsers.
  org.apache.nutch.parsefilter.debug | Adds serialized DOM to parse data, useful for debugging, to understand how the parser implementation interprets a document (not only HTML).
  org.apache.nutch.parsefilter.naivebayes | Html Parse filter that classifies the outlinks from the parseresult as relevant or irrelevant based on the parseText's relevancy (using a training file where you can give positive and negative example texts see the description of parsefilter.naivebayes.trainfile) and if found irrelevent it gives the link a second chance if it contains any of the words from the list given in parsefilter.naivebayes.wordlist.
  org.apache.nutch.parsefilter.regex | RegexParseFilter.
  org.apache.nutch.plugin | The Nutch `Plugin` System.
  org.apache.nutch.protocol | Classes related to the `Protocol` interface, see also `org.apache.nutch.net.protocols`.
  org.apache.nutch.protocol.file | Protocol plugin which supports retrieving local file resources.
  org.apache.nutch.protocol.ftp | Protocol plugin which supports retrieving documents via the ftp protocol.
  org.apache.nutch.protocol.htmlunit | Protocol plugin which supports retrieving documents via the http protocol.
  org.apache.nutch.protocol.http.api | Common API used by HTTP plugins (`http`, `httpclient`)
  org.apache.nutch.protocol.okhttp | Protocol plugin based on okhttp, supports http, https, http/2.
  org.apache.nutch.publisher |
  org.apache.nutch.publisher.rabbitmq | Publisher package to implement queues
  org.apache.nutch.scoring | The `ScoringFilter` interface.
  org.apache.nutch.scoring.depth | Scoring filter to stop crawling at a configurable depth (number of "hops" from seed URLs).
  org.apache.nutch.scoring.link | Scoring filter used in conjunction with `WebGraph`.
  org.apache.nutch.scoring.opic | Scoring filter implementing a variant of the Online Page Importance Computation (OPIC) algorithm.
  org.apache.nutch.scoring.orphan | Scoring filter to modify score or status of orphaned pages (no inlinks found for a configurable amount of time).
  org.apache.nutch.scoring.similarity |
  org.apache.nutch.scoring.tld | Top Level Domain Scoring plugin.
  org.apache.nutch.scoring.urlmeta | URL Meta Tag Scoring Plugin
  org.apache.nutch.urlfilter.api | Generic `URL filter` library, abstracting away from regular expression implementations.
  org.apache.nutch.urlfilter.automaton | URL filter plugin based on dk.brics.automaton Finite-State Automata for JavaTM.
  org.apache.nutch.urlfilter.domain | URL filter plugin to include only URLs which match an element in a given list of domain suffixes, domain names, and/or host names.
  org.apache.nutch.urlfilter.domaindenylist | URL filter plugin to exclude URLs by domain suffixes, domain names, and/or host names.
  org.apache.nutch.urlfilter.fast | URL filter plugin that first does fast exact suffix matches on host/domain names before applying regular expressions to the path component of a URL.
  org.apache.nutch.urlfilter.ignoreexempt | URL filter plugin which identifies exemptions to external urls when when external urls are set to ignore.
  org.apache.nutch.urlfilter.prefix | URL filter plugin to include only URLs which match one of a given list of URL prefixes.
  org.apache.nutch.urlfilter.regex | URL filter plugin to include and/or exclude URLs matching Java regular expressions.
  org.apache.nutch.urlfilter.suffix | URL filter plugin to either exclude or include only URLs which match one of the given (path) suffixes.
  org.apache.nutch.urlfilter.validator | URL filter plugin that validates given urls.
  org.creativecommons.nutch | Sample plugins that parse and index Creative Commons medadata.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.analysis.lang
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.any23
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.collection
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.exchange
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.exchange.jexl
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexer
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexer.anchor
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexer.basic
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexer.feed
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexer.filter
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexer.geoip
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexer.jexl
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexer.links
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexer.metadata
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexer.more
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexer.replace
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexer.staticfield
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexer.subcollection
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexer.tld
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexer.urlmeta
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexwriter.cloudsearch
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexwriter.csv
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexwriter.dummy
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexwriter.elastic
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexwriter.kafka
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexwriter.rabbit
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.indexwriter.solr
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.microformats.reltag
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.net
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.parse
  Class and Description
  Extension An `Extension` is a kind of listener descriptor that will be installed on a concrete `ExtensionPoint` that acts as kind of Publisher.
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.parse.ext
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.parse.feed
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.parse.headings
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.parse.html
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.parse.js
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.parse.metatags
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.parse.swf
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.parse.tika
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.parse.zip
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.parsefilter.debug
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.parsefilter.naivebayes
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.parsefilter.regex
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.plugin
  Class and Description
  Extension An `Extension` is a kind of listener descriptor that will be installed on a concrete `ExtensionPoint` that acts as kind of Publisher.
  ExtensionPoint The `ExtensionPoint` provide meta information of a extension point.
  Plugin A nutch-plugin is an container for a set of custom logic that provide extensions to the nutch core functionality or another plugin that provides an API for extending.
  PluginClassLoader The `PluginClassLoader` is a child-first classloader that only contains classes of the runtime libraries setuped in the plugin manifest file and exported libraries of plugins that are required plugins.
  PluginDescriptor The `PluginDescriptor` provide access to all meta information of a nutch-plugin, as well to the internationalizable resources and the plugin own classloader.
  PluginRepository The plugin repositority is a registry of all plugins.
  PluginRuntimeException `PluginRuntimeException` will be thrown until a exception in the plugin managemnt occurs.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.protocol
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.
  PluginRuntimeException `PluginRuntimeException` will be thrown until a exception in the plugin managemnt occurs.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.protocol.file
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.protocol.ftp
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.protocol.htmlunit
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.protocol.http.api
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.protocol.okhttp
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.publisher
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.publisher.rabbitmq
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.scoring
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.scoring.depth
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.scoring.link
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.scoring.opic
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.scoring.orphan
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.scoring.similarity
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.scoring.tld
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.scoring.urlmeta
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.urlfilter.api
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.urlfilter.automaton
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.urlfilter.domain
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.urlfilter.domaindenylist
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.urlfilter.fast
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.urlfilter.ignoreexempt
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.urlfilter.prefix
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.urlfilter.regex
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.urlfilter.suffix
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.apache.nutch.urlfilter.validator
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

- Classes in org.apache.nutch.plugin used by org.creativecommons.nutch
  Class and Description
  Pluggable Defines the capability of a class to be plugged into Nutch.

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