Builds elasticsearch analysis config arrays. More...

Inheritance diagram for CirrusSearch\Maintenance\AnalysisConfigBuilder:

Public Member Functions
	__construct ( $langCode, array $plugins, SearchConfig $config=null, CirrusSearchHookRunner $cirrusSearchHookRunner=null)

	shouldActivateIcuFolding ( $language)
	Determine if ascii folding should be used.

	shouldActivateIcuTokenization ( $language)
	Determine if the icu tokenizer can be enabled.

	buildConfig ( $language=null)
	Build the analysis config.

	buildSimilarityConfig ()

	enableICUTokenizer (array $config)
	replace the standard tokenizer with icu_tokenizer

	enableICUFolding (array $config, $language)
	Activate ICU folding instead of asciifolding.

	fixAsciiFolding (array $config)
	Workaround for https://issues.apache.org/jira/browse/LUCENE-7468 The preserve_original duplicates token even if they are not modified, leading to more space used and wrong term frequencies.

	getDefaultTextAnalyzerType ( $language)
	Pick the appropriate default analyzer based on the language.

	buildLanguageConfigs (array &$config, array $languages, array $analyzers)
	Create per-language configs for specific analyzers which separates and namespaces filters that are different between languages.

	isIcuAvailable ()

	enableHomoglyphPlugin (array $config, string $language)
	update languages with homoglyph plugin

Public Attributes
const	VERSION = '0.12'
	Version number for the core analysis.

	$homoglyphPluginDenyList = []

	$homoglyphIncompatibleFilters = [ 'aggressive_splitting' ]

Protected Member Functions
	getICUSetFilter ( $language)
	Return the list of chars to exclude from ICU folding.

	getICUNormSetFilter ( $language)
	Return the list of chars to exclude from ICU normalization.

Protected Attributes
	$config

	$defaultLanguage

Detailed Description

Builds elasticsearch analysis config arrays.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. http://www.gnu.org/copyleft/gpl.html

Constructor & Destructor Documentation

◆ __construct()

CirrusSearch\Maintenance\AnalysisConfigBuilder::__construct	(		$langCode,
		array	$plugins,
		SearchConfig	$config = null,
		CirrusSearchHookRunner	$cirrusSearchHookRunner = null )

Parameters

string	$langCode	The language code to build config for
string[]	$plugins	list of plugins installed in Elasticsearch
SearchConfig \| null	$config
CirrusSearchHookRunner \| null	$cirrusSearchHookRunner

Member Function Documentation

◆ buildConfig()

CirrusSearch\Maintenance\AnalysisConfigBuilder::buildConfig ( $language = null )

Build the analysis config.

Parameters

string | null $language Config language

Returns: array the analysis config

Reimplemented in CirrusSearch\Maintenance\SuggesterAnalysisConfigBuilder.

◆ buildLanguageConfigs()

CirrusSearch\Maintenance\AnalysisConfigBuilder::buildLanguageConfigs	(	array &	$config,
		array	$languages,
		array	$analyzers )

Create per-language configs for specific analyzers which separates and namespaces filters that are different between languages.

Parameters

array	&$config	Existing config, will be modified
string[]	$languages	List of languages to process
string[]	$analyzers	List of analyzers to process

◆ buildSimilarityConfig()

CirrusSearch\Maintenance\AnalysisConfigBuilder::buildSimilarityConfig ( )

Returns: array|null the similarity config

◆ enableHomoglyphPlugin()

CirrusSearch\Maintenance\AnalysisConfigBuilder::enableHomoglyphPlugin	(	array	$config,
		string	$language )

update languages with homoglyph plugin

Parameters

mixed[]	$config
string	$language	language to add plugin to

Returns: mixed[] updated config

◆ enableICUFolding()

CirrusSearch\Maintenance\AnalysisConfigBuilder::enableICUFolding	(	array	$config,
			$language )

Activate ICU folding instead of asciifolding.

Parameters

mixed[]	$config
string	$language	Config language

Returns: mixed[] update config

◆ enableICUTokenizer()

CirrusSearch\Maintenance\AnalysisConfigBuilder::enableICUTokenizer ( array $config )

replace the standard tokenizer with icu_tokenizer

Parameters

mixed[] $config

Returns: mixed[] update config

◆ fixAsciiFolding()

CirrusSearch\Maintenance\AnalysisConfigBuilder::fixAsciiFolding ( array $config )

Workaround for https://issues.apache.org/jira/browse/LUCENE-7468 The preserve_original duplicates token even if they are not modified, leading to more space used and wrong term frequencies.

Workaround is to append a unique filter to remove the dups. (made public for unit tests)

Parameters

mixed[] $config

Returns: mixed[] update mapping

◆ getDefaultTextAnalyzerType()

CirrusSearch\Maintenance\AnalysisConfigBuilder::getDefaultTextAnalyzerType ( $language )

Pick the appropriate default analyzer based on the language.

Rather than think of this as per language customization you should think of this as an effort to pick a reasonably default in case CirrusSearch isn't customized for the language.

Parameters

string $language Config language

Returns: string the analyzer type

◆ getICUNormSetFilter()

CirrusSearch\Maintenance\AnalysisConfigBuilder::getICUNormSetFilter ( $language )

protected

Return the list of chars to exclude from ICU normalization.

Parameters

string $language Config language

Returns: null|string

◆ getICUSetFilter()

CirrusSearch\Maintenance\AnalysisConfigBuilder::getICUSetFilter ( $language )

protected

Return the list of chars to exclude from ICU folding.

Parameters

string $language Config language

Returns: null|string

◆ isIcuAvailable()

CirrusSearch\Maintenance\AnalysisConfigBuilder::isIcuAvailable ( )

Returns: bool true if the icu analyzer is available.

◆ shouldActivateIcuFolding()

CirrusSearch\Maintenance\AnalysisConfigBuilder::shouldActivateIcuFolding ( $language )

Determine if ascii folding should be used.

Parameters

string $language Config language

Returns: bool true if icu folding should be enabled

◆ shouldActivateIcuTokenization()

CirrusSearch\Maintenance\AnalysisConfigBuilder::shouldActivateIcuTokenization ( $language )

Determine if the icu tokenizer can be enabled.

Parameters

string $language Config language

Returns: bool

Member Data Documentation

◆ VERSION

const CirrusSearch\Maintenance\AnalysisConfigBuilder::VERSION = '0.12'

Version number for the core analysis.

Increment the major version when the analysis changes in an incompatible way, and change the minor version when it changes but isn't incompatible.

You may also need to increment MetaStoreIndex::METASTORE_VERSION manually as well.

The documentation for this class was generated from the following file:

includes/Maintenance/AnalysisConfigBuilder.php

Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ __construct()

Member Function Documentation

◆ buildConfig()

◆ buildLanguageConfigs()

◆ buildSimilarityConfig()

◆ enableHomoglyphPlugin()

◆ enableICUFolding()

◆ enableICUTokenizer()

◆ fixAsciiFolding()

◆ getDefaultTextAnalyzerType()

◆ getICUNormSetFilter()

◆ getICUSetFilter()

◆ isIcuAvailable()

◆ shouldActivateIcuFolding()

◆ shouldActivateIcuTokenization()

Member Data Documentation

◆ VERSION