110 lines
2.9 KiB
PHP
110 lines
2.9 KiB
PHP
<?php
|
|
/**
|
|
* Definition of a mapping for the search index field.
|
|
* @since 1.28
|
|
*/
|
|
interface SearchIndexField {
|
|
/*
|
|
* Field types
|
|
*/
|
|
/**
|
|
* 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/
|
|
*/
|
|
const INDEX_TYPE_TEXT = 0;
|
|
/**
|
|
* KEYWORD fields are indexed without any processing, so are appropriate
|
|
* for e.g. URLs. The content will often consist of a single token.
|
|
*/
|
|
const INDEX_TYPE_KEYWORD = 1;
|
|
const INDEX_TYPE_INTEGER = 2;
|
|
const INDEX_TYPE_NUMBER = 3;
|
|
const INDEX_TYPE_DATETIME = 4;
|
|
const INDEX_TYPE_NESTED = 5;
|
|
const INDEX_TYPE_BOOL = 6;
|
|
|
|
/**
|
|
* 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
|
|
*/
|
|
const INDEX_TYPE_SHORT_TEXT = 7;
|
|
|
|
/**
|
|
* Generic field flags.
|
|
*/
|
|
/**
|
|
* This field is case-insensitive.
|
|
*/
|
|
const FLAG_CASEFOLD = 1;
|
|
|
|
/**
|
|
* This field contains secondary information, which is
|
|
* already present in other fields, but can be used for
|
|
* scoring.
|
|
*/
|
|
const FLAG_SCORING = 2;
|
|
|
|
/**
|
|
* This field does not need highlight handling.
|
|
*/
|
|
const FLAG_NO_HIGHLIGHT = 4;
|
|
|
|
/**
|
|
* Do not index this field, just store it.
|
|
*/
|
|
const FLAG_NO_INDEX = 8;
|
|
|
|
/**
|
|
* Get mapping for specific search engine
|
|
* @param SearchEngine $engine
|
|
* @return array|null Null means this field does not map to anything
|
|
*/
|
|
public function getMapping( SearchEngine $engine );
|
|
|
|
/**
|
|
* Set global flag for this field.
|
|
*
|
|
* @param int $flag Bit flag to set/unset
|
|
* @param bool $unset True if flag should be unset, false by default
|
|
* @return $this
|
|
*/
|
|
public function setFlag( $flag, $unset = false );
|
|
|
|
/**
|
|
* Check if flag is set.
|
|
* @param int $flag
|
|
* @return int 0 if unset, !=0 if set
|
|
*/
|
|
public function checkFlag( $flag );
|
|
|
|
/**
|
|
* Merge two field definitions if possible.
|
|
*
|
|
* @param SearchIndexField $that
|
|
* @return SearchIndexField|false New definition or false if not mergeable.
|
|
*/
|
|
public function merge( SearchIndexField $that );
|
|
|
|
/**
|
|
* 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.
|
|
*
|
|
* @param SearchEngine $engine
|
|
* @return array an array of hints generally indexed by hint name. The type of
|
|
* values is search engine specific
|
|
* @since 1.30
|
|
*/
|
|
public function getEngineHints( SearchEngine $engine );
|
|
}
|