9e035a229e
This will allow to use them easier in JSON config files. Bug: T142809 Change-Id: I4053a87fe8e53c9b506604db6fad2f98f7dba150
153 lines
2.8 KiB
PHP
153 lines
2.8 KiB
PHP
<?php
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/**
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* Basic infrastructure of the field definition.
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*
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* Specific engines should extend this class and at at least,
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* override the getMapping method, but can reuse other parts.
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*
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* @since 1.28
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*/
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abstract class SearchIndexFieldDefinition implements SearchIndexField {
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/**
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* Name of the field
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*
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* @var string
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*/
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protected $name;
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/**
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* Type of the field, one of the constants above
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*
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* @var string
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*/
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protected $type;
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/**
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* Bit flags for the field.
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*
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* @var int
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*/
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protected $flags = 0;
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/**
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* Subfields
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* @var SearchIndexFieldDefinition[]
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*/
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protected $subfields = [];
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/**
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* @var callable
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*/
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private $mergeCallback;
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/**
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* @param string $name Field name
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* @param string $type Index type
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*/
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public function __construct( $name, $type ) {
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$this->name = $name;
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$this->type = $type;
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}
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/**
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* Get field name
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* @return string
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*/
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public function getName() {
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return $this->name;
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}
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/**
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* Get index type
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* @return int
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*/
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public function getIndexType() {
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return $this->type;
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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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if ( $unset ) {
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$this->flags &= ~$flag;
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} else {
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$this->flags |= $flag;
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}
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return $this;
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}
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/**
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* Check if flag is set.
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* @param int $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 $this->flags & $flag;
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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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if ( !empty( $this->mergeCallback ) ) {
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return call_user_func( $this->mergeCallback, $this, $that );
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}
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// TODO: which definitions may be compatible?
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if ( ( $that instanceof self ) && $this->type === $that->type &&
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$this->flags === $that->flags && $this->type !== self::INDEX_TYPE_NESTED
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) {
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return $that;
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}
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return false;
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}
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/**
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* Get subfields
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* @return SearchIndexFieldDefinition[]
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*/
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public function getSubfields() {
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return $this->subfields;
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}
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/**
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* Set subfields
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* @param SearchIndexFieldDefinition[] $subfields
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* @return $this
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*/
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public function setSubfields( array $subfields ) {
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$this->subfields = $subfields;
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return $this;
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}
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/**
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* @param SearchEngine $engine
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*
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* @return array
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*/
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abstract public function getMapping( SearchEngine $engine );
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/**
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* Set field-specific merge strategy.
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* @param callable $callback
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*/
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public function setMergeCallback( $callback ) {
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$this->mergeCallback = $callback;
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}
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/**
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* @inheritDoc
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*/
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public function getEngineHints( SearchEngine $engine ) {
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return [];
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}
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}
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