FindUrlPipe: Class to find and/or remove the urls on the data

In miferreiro/bdp4R: Big Data Preprocessing For R

Description

This class allows you to preprocess the data of an instance to find the urls that are in it. Optionally, you can decide whether to remove the data urls or not.

Usage

FindUrlPipe$new(propertyName = "URLs",
                alwaysBeforeDeps = list(),
                notAfterDeps = list("FindUrlPipe"))

Arguments

propertyName	(character) Name of the property associated with the pipe.
alwaysBeforeDeps	(list) The dependences alwaysBefore (pipes that must be executed before this one).
notAfterDeps	(list) The dependences notAfter (pipes that cannot be executed after this one).

Format

An object of class R6ClassGenerator of length 24.

Details

The regular expressions indicated in the URLPatterns variable are used to identify urls.

The pipe will invalidate the instance in the moment that the resulting data is empty.

Inherit

This class inherits from PipeGeneric and implements the pipe abstract function.

Methods

• pipe Function that preprocesses the instance to obtain/remove the users.

  • Usage

    pipe(instance, removeUrl = TRUE, URLPatterns = list(self$URLPattern, self$EmailPattern), namesURLPatterns = list("UrlPattern","EmailPattern"))

  • Value

    The instance with the modifications that have occurred in the pipe.

  • Arguments

    • instance (Instance) Instance to preproccess.

    • removeUrl (logical) Indicates if the urls are removed.

    • URLPatterns (list) The regex to find urls.

    • namesURLPatterns (list) The names of regex.

• findUrl Function that find the urls in the data.

  • Usage

    findHashtag(pattern, data)

  • Value

    List with urls found.

  • Arguments

    • pattern (character) Regex to find urls.

    • data (character) Text to find urls.

• removeUrl Function that removes the urls in the data.

  • Usage

    removeUrl(pattern, data)

  • Value

    The data with urls removed.

  • Arguments

    • pattern (character) Regex to find urls.

    • data (character) Text in which hashtags will be urls.

• putNamesURLPattern Set the names to url patterns result.

  • Usage

    putNamesURLPattern(resultOfURLPatterns)

  • Value

    Value of resultOfURLPatterns variable with the names of url pattern.

  • Arguments

    • resultOfURLPatterns (list) List with urls found.

• getURLPatterns Getter of url patterns.

  • Usage

    getURLPatterns()

  • Value

    Value of url patterns.

• getNamesURLPatterns Getter of name of urls.

  • Usage

    getNamesURLPatterns()

  • Value

    Value of name of urls.

Public fields

• URLPattern (character) Regular expression to detect urls.

• EmailPattern (character) Regular expression to detect emails.

Private fields

• URLPatterns (list) Regular expressions used to detect urls.

• namesURLPatterns (list) Names of regular expressions that are used to identify urls.

See Also

PipeGeneric, Instance

miferreiro/bdp4R documentation built on May 20, 2019, 12:59 a.m.