MediaWiki REL1_39
NullIndexField Class Reference

Null index field - means search engine does not implement this field. More...

Inheritance diagram for NullIndexField:
Collaboration diagram for NullIndexField:

Public Member Functions

 checkFlag ( $flag)
 Check if flag is set.
 
 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

 
 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.
 

Additional Inherited Members

- Public Attributes inherited from SearchIndexField
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 = 'bool'
 
const INDEX_TYPE_DATETIME = 'datetime'
 
const INDEX_TYPE_INTEGER = 'integer'
 
const INDEX_TYPE_KEYWORD = 'keyword'
 KEYWORD fields are indexed without any processing, so are appropriate for e.g.
 
const INDEX_TYPE_NESTED = 'nested'
 
const INDEX_TYPE_NUMBER = 'number'
 
const INDEX_TYPE_SHORT_TEXT = 'short_text'
 SHORT_TEXT is meant to be used with short text made of mostly ascii technical information.
 
const INDEX_TYPE_TEXT = 'text'
 TEXT fields are suitable for natural language and may be subject to analysis such as stemming.
 

Detailed Description

Null index field - means search engine does not implement this field.

Definition at line 6 of file NullIndexField.php.

Member Function Documentation

◆ checkFlag()

NullIndexField::checkFlag (   $flag)

Check if flag is set.

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

Implements SearchIndexField.

Definition at line 33 of file NullIndexField.php.

◆ getEngineHints()

NullIndexField::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

Implements SearchIndexField.

Definition at line 50 of file NullIndexField.php.

◆ getMapping()

NullIndexField::getMapping ( SearchEngine  $engine)

Get mapping for specific search engine.

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

Implements SearchIndexField.

Definition at line 13 of file NullIndexField.php.

◆ merge()

NullIndexField::merge ( SearchIndexField  $that)

Merge two field definitions if possible.

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

Implements SearchIndexField.

Definition at line 43 of file NullIndexField.php.

◆ setFlag()

NullIndexField::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

Implements SearchIndexField.

Definition at line 24 of file NullIndexField.php.


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