45 lines
994 B
PHP
45 lines
994 B
PHP
<?php
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/**
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* Null index field - means search engine does not implement this field.
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*/
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class NullIndexField implements SearchIndexField {
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/**
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* Get mapping for specific search engine
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* @param SearchEngine $engine
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* @return array|null Null means this field does not map to anything
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*/
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public function getMapping( SearchEngine $engine ) {
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return null;
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}
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/**
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* Set global flag for this field.
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*
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* @param int $flag Bit flag to set/unset
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* @param bool $unset True if flag should be unset, false by default
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* @return $this
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*/
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public function setFlag( $flag, $unset = false ) {
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}
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/**
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* Check if flag is set.
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* @param $flag
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* @return int 0 if unset, !=0 if set
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*/
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public function checkFlag( $flag ) {
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return 0;
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}
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/**
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* Merge two field definitions if possible.
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*
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* @param SearchIndexField $that
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* @return SearchIndexField|false New definition or false if not mergeable.
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*/
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public function merge( SearchIndexField $that ) {
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return $that;
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}
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}
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