org.apache.nutch.any23

## Class Any23ParseFilter

- java.lang.Object
- - org.apache.nutch.any23.Any23ParseFilter

- All Implemented Interfaces:
    Configurable, HtmlParseFilter, Pluggable

      public class Any23ParseFilter
      extends Object
      implements HtmlParseFilter

  This implementation of `HtmlParseFilter` uses the Apache Any23 library for parsing and extracting structured data in RDF format from a variety of Web documents. The supported formats can be found at Apache Any23.

  In this implementation triples are written as Notation3 e.g. `"2014/03/31 13:53:03"@en-gb .` and triples are identified within output triple streams by the presence of '\n'. The presence of the '\n' is a characteristic specific to N3 serialization in Any23. In order to use another/other writers implementing the TripleHandler interface, we will most likely need to identify an alternative data characteristic which we can use to split triples streams.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static String` | `ANY_23_CONTENT_TYPES_CONF`
    `static String` | `ANY_23_EXTRACTORS_CONF`
    `static String` | `ANY23_TRIPLES` Constant identifier used as a Key for writing and reading triples to and from the metadata Map field.
    `static org.slf4j.Logger` | `LOG` Logging instance

    - ### Fields inherited from interface org.apache.nutch.parse.HtmlParseFilter

      `X_POINT_ID`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `Any23ParseFilter()`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `ParseResult` | `filter(Content content, ParseResult parseResult, HTMLMetaTags metaTags, DocumentFragment doc)` Adds metadata or otherwise modifies a parse of HTML content, given the DOM tree of a page.
    `Configuration` | `getConf()`
    `void` | `setConf(Configuration conf)`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Field Detail

    - #### LOG

          public static final org.slf4j.Logger LOG

      Logging instance

    - #### ANY23_TRIPLES

          public static final String ANY23_TRIPLES

      Constant identifier used as a Key for writing and reading triples to and from the metadata Map field.
      See Also:
        Constant Field Values

    - #### ANY_23_EXTRACTORS_CONF

          public static final String ANY_23_EXTRACTORS_CONF

      See Also:
        Constant Field Values

    - #### ANY_23_CONTENT_TYPES_CONF

          public static final String ANY_23_CONTENT_TYPES_CONF

      See Also:
        Constant Field Values

  - ### Constructor Detail

    - #### Any23ParseFilter

          public Any23ParseFilter()

  - ### Method Detail

    - #### getConf

          public Configuration getConf()

      Specified by:
        `getConf` in interface `Configurable`

    - #### setConf

          public void setConf(Configuration conf)

      Specified by:
        `setConf` in interface `Configurable`

    - #### filter

          public ParseResult filter(Content content,
                                    ParseResult parseResult,
                                    HTMLMetaTags metaTags,
                                    DocumentFragment doc)

      Description copied from interface: `HtmlParseFilter`
      Adds metadata or otherwise modifies a parse of HTML content, given the DOM tree of a page.
      Specified by:
        `filter` in interface `HtmlParseFilter`
      See Also:
        `HtmlParseFilter.filter(Content, ParseResult, HTMLMetaTags, DocumentFragment)`

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