diff options
Diffstat (limited to 'plugins/jetpack/_inc/lib/jetpack-wpes-query-builder/jetpack-wpes-query-builder.php')
| -rw-r--r-- | plugins/jetpack/_inc/lib/jetpack-wpes-query-builder/jetpack-wpes-query-builder.php | 341 |
1 files changed, 0 insertions, 341 deletions
diff --git a/plugins/jetpack/_inc/lib/jetpack-wpes-query-builder/jetpack-wpes-query-builder.php b/plugins/jetpack/_inc/lib/jetpack-wpes-query-builder/jetpack-wpes-query-builder.php deleted file mode 100644 index d3481ce5..00000000 --- a/plugins/jetpack/_inc/lib/jetpack-wpes-query-builder/jetpack-wpes-query-builder.php +++ /dev/null @@ -1,341 +0,0 @@ -<?php - - -/** - * Provides an interface for easily building a complex search query that - * combines multiple ranking signals. - * - * - * $bldr = new Jetpack_WPES_Query_Builder(); - * $bldr->add_filter( ... ); - * $bldr->add_filter( ... ); - * $bldr->add_query( ... ); - * $es_query = $bldr->build_query(); - * - * - * All ES queries take a standard form with main query (with some filters), - * wrapped in a function_score - * - * Bucketed queries use an aggregation to diversify results. eg a bunch - * of separate filters where to get different sets of results. - * - */ - -class Jetpack_WPES_Query_Builder { - - protected $es_filters = array(); - - // Custom boosting with function_score - protected $functions = array(); - protected $decays = array(); - protected $scripts = array(); - protected $functions_max_boost = 2.0; - protected $functions_score_mode = 'multiply'; - protected $query_bool_boost = null; - - // General aggregations for buckets and metrics - protected $aggs_query = false; - protected $aggs = array(); - - // The set of top level text queries to combine - protected $must_queries = array(); - protected $should_queries = array(); - protected $dis_max_queries = array(); - - protected $diverse_buckets_query = false; - protected $bucket_filters = array(); - protected $bucket_sub_aggs = array(); - - //////////////////////////////////// - // Methods for building a query - - public function add_filter( $filter ) { - $this->es_filters[] = $filter; - } - - public function add_query( $query, $type = 'must' ) { - switch ( $type ) { - case 'dis_max': - $this->dis_max_queries[] = $query; - break; - - case 'should': - $this->should_queries[] = $query; - break; - - case 'must': - default: - $this->must_queries[] = $query; - break; - } - } - - /** - * Add a scoring function to the query - * - * NOTE: For decays (linear, exp, or gauss), use Jetpack_WPES_Query_Builder::add_decay() instead - * - * @see https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-function-score-query.html - * - * @param $function string name of the function - * @param $params array functions parameters - * - * @return void - */ - public function add_function( $function, $params ) { - $this->functions[ $function ][] = $params; - } - - /** - * Add a decay function to score results - * - * This method should be used instead of Jetpack_WPES_Query_Builder::add_function() for decays, as the internal ES structure - * is slightly different for them. - * - * @see https://www.elastic.co/guide/en/elasticsearch/guide/current/decay-functions.html - * - * @param $function string name of the decay function - linear, exp, or gauss - * @param $params array The decay functions parameters, passed to ES directly - * - * @return void - */ - public function add_decay( $function, $params ) { - $this->decays[ $function ][] = $params; - } - - /** - * Add a scoring mode to the query - * - * @see https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-function-score-query.html - * - * @param $mode string name of how to score - * - * @return void - */ - public function add_score_mode_to_functions( $mode='multiply' ) { - $this->functions_score_mode = $mode; - } - - public function add_max_boost_to_functions( $boost ) { - $this->functions_max_boost = $boost; - } - - public function add_boost_to_query_bool( $boost ) { - $this->query_bool_boost = $boost; - } - - public function add_aggs( $aggs_name, $aggs ) { - $this->aggs_query = true; - $this->aggs[$aggs_name] = $aggs; - } - - public function add_aggs_sub_aggs( $aggs_name, $sub_aggs ) { - if ( ! array_key_exists( 'aggs', $this->aggs[$aggs_name] ) ) { - $this->aggs[$aggs_name]['aggs'] = array(); - } - $this->aggs[$aggs_name]['aggs'] = $sub_aggs; - } - - public function add_bucketed_query( $name, $query ) { - $this->_add_bucket_filter( $name, $query ); - - $this->add_query( $query, 'dis_max' ); - } - - public function add_bucketed_terms( $name, $field, $terms, $boost = 1 ) { - if ( ! is_array( $terms ) ) { - $terms = array( $terms ); - } - - $this->_add_bucket_filter( $name, array( - 'terms' => array( - $field => $terms, - ), - )); - - $this->add_query( array( - 'constant_score' => array( - 'filter' => array( - 'terms' => array( - $field => $terms, - ), - ), - 'boost' => $boost, - ), - ), 'dis_max' ); - } - - public function add_bucket_sub_aggs( $agg ) { - $this->bucket_sub_aggs = array_merge( $this->bucket_sub_aggs, $agg ); - } - - protected function _add_bucket_filter( $name, $filter ) { - $this->diverse_buckets_query = true; - $this->bucket_filters[ $name ] = $filter; - } - - //////////////////////////////////// - // Building Final Query - - /** - * Combine all the queries, functions, decays, scripts, and max_boost into an ES query - * - * @return array Array representation of the built ES query - */ - public function build_query() { - $query = array(); - - //dis_max queries just become a single must query - if ( ! empty( $this->dis_max_queries ) ) { - $this->must_queries[] = array( - 'dis_max' => array( - 'queries' => $this->dis_max_queries, - ), - ); - } - - if ( empty( $this->must_queries ) ) { - $this->must_queries = array( - array( - 'match_all' => array(), - ), - ); - } - - if ( empty( $this->should_queries ) ) { - if ( 1 == count( $this->must_queries ) ) { - $query = $this->must_queries[0]; - } else { - $query = array( - 'bool' => array( - 'must' => $this->must_queries, - ), - ); - } - } else { - $query = array( - 'bool' => array( - 'must' => $this->must_queries, - 'should' => $this->should_queries, - ), - ); - } - - if ( ! is_null( $this->query_bool_boost ) && isset( $query['bool'] ) ) { - $query['bool']['boost'] = $this->query_bool_boost; - } - - // If there are any function score adjustments, then combine those - if ( $this->functions || $this->decays || $this->scripts ) { - $weighting_functions = array(); - - if ( $this->functions ) { - foreach ( $this->functions as $function_type => $configs ) { - foreach ( $configs as $config ) { - foreach ( $config as $field => $params ) { - $func_arr = $params; - - $func_arr['field'] = $field; - - $weighting_functions[] = array( - $function_type => $func_arr, - ); - } - } - } - } - - if ( $this->decays ) { - foreach ( $this->decays as $decay_type => $configs ) { - foreach ( $configs as $config ) { - foreach ( $config as $field => $params ) { - $weighting_functions[] = array( - $decay_type => array( - $field => $params, - ), - ); - } - } - } - } - - if ( $this->scripts ) { - foreach ( $this->scripts as $script ) { - $weighting_functions[] = array( - 'script_score' => array( - 'script' => $script, - ), - ); - } - } - - $query = array( - 'function_score' => array( - 'query' => $query, - 'functions' => $weighting_functions, - 'max_boost' => $this->functions_max_boost, - 'score_mode' => $this->functions_score_mode, - ), - ); - } // End if(). - - return $query; - } - - /** - * Assemble the 'filter' portion of an ES query, from all registered filters - * - * @return array|null Combined ES filters, or null if none have been defined - */ - public function build_filter() { - if ( empty( $this->es_filters ) ) { - $filter = null; - } elseif ( 1 == count( $this->es_filters ) ) { - $filter = $this->es_filters[0]; - } else { - $filter = array( - 'and' => $this->es_filters, - ); - } - - return $filter; - } - - /** - * Assemble the 'aggregation' portion of an ES query, from all general aggregations. - * - * @return array An aggregation query as an array of topics, filters, and bucket names - */ - public function build_aggregation() { - if ( empty( $this->bucket_sub_aggs ) && empty( $this->aggs_query ) ) { - return array(); - } - - if ( ! $this->diverse_buckets_query && empty( $this->aggs_query ) ) { - return $this->bucket_sub_aggs; - } - - $aggregations = array( - 'topics' => array( - 'filters' => array( - 'filters' => array(), - ), - ), - ); - - if ( ! empty( $this->bucket_sub_aggs ) ) { - $aggregations['topics']['aggs'] = $this->bucket_sub_aggs; - } - - foreach ( $this->bucket_filters as $bucket_name => $filter ) { - $aggregations['topics']['filters']['filters'][ $bucket_name ] = $filter; - } - - if ( ! empty( $this->aggs_query ) ) { - $aggregations = $this->aggs; - } - - return $aggregations; - } - -} |