MediaWiki REL1_33
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SearchIndexField Interface Reference

Definition of a mapping for the search index field. More...

Inheritance diagram for SearchIndexField:
Inheritance graph
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Public Member Functions

 checkFlag ( $flag)
 Check if flag is set.
 
 getEngineHints (SearchEngine $engine)
 A list of search engine hints for this field.
 
 getMapping (SearchEngine $engine)
 Get mapping for specific search engine.
 
 merge (SearchIndexField $that)
 Merge two field definitions if possible.
 
 setFlag ( $flag, $unset=false)
 Set global flag for this field.
 

Public Attributes

const FLAG_CASEFOLD = 1
 Generic field flags.
 
const FLAG_NO_HIGHLIGHT = 4
 This field does not need highlight handling.
 
const FLAG_NO_INDEX = 8
 Do not index this field, just store it.
 
const FLAG_SCORING = 2
 This field contains secondary information, which is already present in other fields, but can be used for scoring.
 
const INDEX_TYPE_BOOL = 6
 
const INDEX_TYPE_DATETIME = 4
 
const INDEX_TYPE_INTEGER = 2
 
const INDEX_TYPE_KEYWORD = 1
 KEYWORD fields are indexed without any processing, so are appropriate for e.g.
 
const INDEX_TYPE_NESTED = 5
 
const INDEX_TYPE_NUMBER = 3
 
const INDEX_TYPE_SHORT_TEXT = 7
 SHORT_TEXT is meant to be used with short text made of mostly ascii technical information.
 
const INDEX_TYPE_TEXT = 0
 TEXT fields are suitable for natural language and may be subject to analysis such as stemming.
 

Detailed Description

Definition of a mapping for the search index field.

Since
1.28

Definition at line 6 of file SearchIndexField.php.

Member Function Documentation

◆ checkFlag()

SearchIndexField::checkFlag (   $flag)

Check if flag is set.

Parameters
int$flag
Returns
int 0 if unset, !=0 if set

Implemented in NullIndexField, and SearchIndexFieldDefinition.

◆ getEngineHints()

SearchIndexField::getEngineHints ( SearchEngine  $engine)

A list of search engine hints for this field.

Hints are usually specific to a search engine implementation and allow to fine control how the search engine will handle this particular field.

For example some search engine permits some optimizations at index time by ignoring an update if the updated value does not change by more than X% on a numeric value.

Parameters
SearchEngine$engine
Returns
array an array of hints generally indexed by hint name. The type of values is search engine specific
Since
1.30

Implemented in NullIndexField, and SearchIndexFieldDefinition.

◆ getMapping()

SearchIndexField::getMapping ( SearchEngine  $engine)

Get mapping for specific search engine.

Parameters
SearchEngine$engine
Returns
array|null Null means this field does not map to anything

Implemented in DummySearchIndexFieldDefinition, NullIndexField, and SearchIndexFieldDefinition.

◆ merge()

SearchIndexField::merge ( SearchIndexField  $that)

Merge two field definitions if possible.

Parameters
SearchIndexField$that
Returns
SearchIndexField|false New definition or false if not mergeable.

Implemented in NullIndexField, and SearchIndexFieldDefinition.

◆ setFlag()

SearchIndexField::setFlag (   $flag,
  $unset = false 
)

Set global flag for this field.

Parameters
int$flagBit flag to set/unset
bool$unsetTrue if flag should be unset, false by default
Returns
$this

Implemented in NullIndexField, and SearchIndexFieldDefinition.

Member Data Documentation

◆ FLAG_CASEFOLD

const SearchIndexField::FLAG_CASEFOLD = 1

Generic field flags.

This field is case-insensitive.

Definition at line 44 of file SearchIndexField.php.

Referenced by ContentHandler\getFieldsForSearchIndex(), and FileContentHandler\getFieldsForSearchIndex().

◆ FLAG_NO_HIGHLIGHT

const SearchIndexField::FLAG_NO_HIGHLIGHT = 4

This field does not need highlight handling.

Definition at line 56 of file SearchIndexField.php.

Referenced by WikitextContentHandler\getFieldsForSearchIndex().

◆ FLAG_NO_INDEX

const SearchIndexField::FLAG_NO_INDEX = 8

Do not index this field, just store it.

Definition at line 61 of file SearchIndexField.php.

◆ FLAG_SCORING

const SearchIndexField::FLAG_SCORING = 2

This field contains secondary information, which is already present in other fields, but can be used for scoring.

Definition at line 51 of file SearchIndexField.php.

Referenced by WikitextContentHandler\getFieldsForSearchIndex().

◆ INDEX_TYPE_BOOL

const SearchIndexField::INDEX_TYPE_BOOL = 6

Definition at line 28 of file SearchIndexField.php.

◆ INDEX_TYPE_DATETIME

const SearchIndexField::INDEX_TYPE_DATETIME = 4

Definition at line 26 of file SearchIndexField.php.

◆ INDEX_TYPE_INTEGER

const SearchIndexField::INDEX_TYPE_INTEGER = 2

Definition at line 24 of file SearchIndexField.php.

Referenced by FileContentHandler\getFieldsForSearchIndex().

◆ INDEX_TYPE_KEYWORD

const SearchIndexField::INDEX_TYPE_KEYWORD = 1

KEYWORD fields are indexed without any processing, so are appropriate for e.g.

URLs. The content will often consist of a single token.

Definition at line 23 of file SearchIndexField.php.

Referenced by ContentHandler\getFieldsForSearchIndex(), FileContentHandler\getFieldsForSearchIndex(), and TextContentHandler\getFieldsForSearchIndex().

◆ INDEX_TYPE_NESTED

const SearchIndexField::INDEX_TYPE_NESTED = 5

Definition at line 27 of file SearchIndexField.php.

Referenced by SearchIndexFieldTest\getMergeCases().

◆ INDEX_TYPE_NUMBER

const SearchIndexField::INDEX_TYPE_NUMBER = 3

Definition at line 25 of file SearchIndexField.php.

◆ INDEX_TYPE_SHORT_TEXT

const SearchIndexField::INDEX_TYPE_SHORT_TEXT = 7

SHORT_TEXT is meant to be used with short text made of mostly ascii technical information.

Generally a language agnostic analysis chain is used and aggressive splitting to increase recall. E.g suited for mime/type

Definition at line 36 of file SearchIndexField.php.

Referenced by FileContentHandler\getFieldsForSearchIndex().

◆ INDEX_TYPE_TEXT

const SearchIndexField::INDEX_TYPE_TEXT = 0

TEXT fields are suitable for natural language and may be subject to analysis such as stemming.

Read more: https://wikimediafoundation.org/2018/08/07/anatomy-search-token-affection/ https://wikimediafoundation.org/2018/09/13/anatomy-search-variation-under-nature/

Definition at line 18 of file SearchIndexField.php.

Referenced by ContentHandler\getFieldsForSearchIndex(), FileContentHandler\getFieldsForSearchIndex(), WikitextContentHandler\getFieldsForSearchIndex(), SearchEngineTest\hookSearchIndexFields(), and SearchEngineTest\testSearchIndexFields().

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