From 88e3ebe05b94d62a7bcc5da604387b3ad961dc98 Mon Sep 17 00:00:00 2001 From: Andrew Nacin Date: Sat, 29 Mar 2014 06:03:15 +0000 Subject: [PATCH] Revert the conversion of adjacent post queries to WP_Query. Explanation on the ticket. Reverts [27285], [27286], [27287], [27288], [27291], [27292], [27293], [27296], [27633], [27634], [27635], and [27692]. see #26937. Built from https://develop.svn.wordpress.org/trunk@27836 git-svn-id: http://core.svn.wordpress.org/trunk@27670 1a063a9b-81f0-0310-95a4-ce76da25c4cd --- wp-includes/link-template.php | 451 +++++----------------------------- wp-includes/load.php | 2 +- wp-includes/query.php | 3 - 3 files changed, 56 insertions(+), 400 deletions(-) diff --git a/wp-includes/link-template.php b/wp-includes/link-template.php index 9fb017b5b1..3f17612a54 100644 --- a/wp-includes/link-template.php +++ b/wp-includes/link-template.php @@ -1133,423 +1133,82 @@ function get_next_post( $in_same_term = false, $excluded_terms = '', $taxonomy = * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. * @param bool $previous Optional. Whether to retrieve previous post. * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. - * @return mixed Post object if successful. Null if current post doesn't exist. Empty string if no corresponding adjacent post exists. + * @return mixed Post object if successful. Null if global $post is not set. Empty string if no corresponding post exists. */ function get_adjacent_post( $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) { - if ( is_string( $excluded_terms ) && false !== strpos( $excluded_terms, ' and ' ) ) { - // back-compat: $excluded_terms used to be IDs separated by " and " - _deprecated_argument( __FUNCTION__, '3.3', sprintf( __( 'Use commas instead of %s to separate excluded terms.' ), "'and'" ) ); - $excluded_terms = explode( ' and ', $excluded_terms ); - } - if ( $excluded_terms ) { - $excluded_terms = wp_parse_id_list( $excluded_terms ); - } else { - $excluded_terms = array(); - } + global $wpdb; - $adjacent = new WP_Adjacent_Post( array( - 'post' => get_post(), - 'previous' => $previous, - 'taxonomy' => $taxonomy, - 'in_same_term' => $in_same_term, - 'excluded_terms' => $excluded_terms, - ) ); + if ( ( ! $post = get_post() ) || ! taxonomy_exists( $taxonomy ) ) + return null; - return $adjacent->adjacent_post; -} + $current_post_date = $post->post_date; -/** - * WordPress Adjacent Post API - * - * Based on the current or specified post, determines either the previous or - * next post based on the criteria specified. Supports retrieving posts with - * the same taxonomy terms and posts that lack specific terms. - * - * @since 3.9.0 - * - * @package WordPress - * @subpackage Template - */ -class WP_Adjacent_Post { + $join = ''; + $posts_in_ex_terms_sql = ''; + if ( $in_same_term || ! empty( $excluded_terms ) ) { + $join = " INNER JOIN $wpdb->term_relationships AS tr ON p.ID = tr.object_id INNER JOIN $wpdb->term_taxonomy tt ON tr.term_taxonomy_id = tt.term_taxonomy_id"; - /** - * Adjacent post object. - * - * @since 3.9.0 - * @access public - * @var null|WP_Adjacent_Post - */ - public $adjacent_post = null; - - /** - * Current post object. - * - * @since 3.9.0 - * @access protected - * @var bool|WP_Post - */ - protected $current_post = false; - - /** - * 'previous' or 'next' type of adjacent post. - * - * @since 3.9.0 - * @access protected - * @var string - */ - protected $adjacent = 'previous'; - - /** - * Post taxonomy. - * - * @since 3.9.0 - * @access protected - * @var string - */ - protected $taxonomy = 'category'; - - /** - * Whether the post should be in a same taxonomy term. - * - * @since 3.9.0 - * @access protected - * @var string - */ - protected $in_same_term = false; - - /** - * Excluded term IDs. - * - * @since 3.9.0 - * @access protected - * @var string|array - */ - protected $excluded_terms = ''; - - /** - * Class constructor. - * - * The post is queried is run if arguments are passed to the constructor. - * Otherwise, the get_post() method will need to be called. - * - * @param array $args Optional. See the get_post() method for $args. - */ - public function __construct( $args = array() ) { - if ( empty( $args ) ) { - return; + if ( $in_same_term ) { + if ( ! is_object_in_taxonomy( $post->post_type, $taxonomy ) ) + return ''; + $term_array = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'ids' ) ); + if ( ! $term_array || is_wp_error( $term_array ) ) + return ''; + $join .= $wpdb->prepare( " AND tt.taxonomy = %s AND tt.term_id IN (" . implode( ',', array_map( 'intval', $term_array ) ) . ")", $taxonomy ); } - $this->get_post( $args ); - } - - /** - * Allow direct access to adjacent post from the class instance itself. - * - * @param string $property Property to get. - * @return mixed String when adjacent post is found and post property exists. Null when no adjacent post is found. - */ - public function __get( $property ) { - if ( is_object( $this->adjacent_post ) && property_exists( $this->adjacent_post, $property ) ) { - return $this->adjacent_post->{$property}; - } else { - return null; - } - } - - /** - * Determine adjacent post for specified post and adjacency. - * - * @since 3.9.0 - * - * @param array $args { - * Arguments for querying the adjacent post. - * - * @type mixed $post Optional. Post object or ID to find adjacent post for. - * @type bool $previous Optional. Whether to retrieve previous post. - * @type string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. - * @type bool $in_same_term Optional. Whether post should be in a same taxonomy term. - * @type array $excluded_terms Optional. Array of excluded term IDs. - * } - * @return mixed Post object on success. False if no adjacent post exists. Null on failure. - */ - protected function get_post( $args ) { - $this->current_post = get_post( $args['post'] ); - $this->excluded_terms = array_map( 'intval', $args['excluded_terms'] ); - $this->adjacent = $args['previous'] ? 'previous' : 'next'; - $this->taxonomy = $args['taxonomy']; - $this->in_same_term = (bool) $args['in_same_term']; - - // Return null when either the post or taxonomy doesn't exist. - if ( ! $this->current_post ) { - return; - } - if ( $this->in_same_term || $this->excluded_terms ) { - if ( ! taxonomy_exists( $args['taxonomy'] ) ) { - return; - } - } - - // Build our arguments for WP_Query. - $query_args = array( - 'posts_per_page' => 1, - 'post_status' => 'publish', - 'post_type' => $this->current_post->post_type, - 'orderby' => 'date', - 'order' => 'previous' === $this->adjacent ? 'DESC' : 'ASC', - 'ignore_sticky_posts' => true, - 'date_query' => array(), - - // Performance considerations: - 'no_found_rows' => true, - 'cache_results' => true, - 'update_post_term_cache' => false, - 'update_post_meta_cache' => false, - 'split_the_query' => wp_using_ext_object_cache(), - ); - - $tax_query = array(); - - // Set up for requests limited to posts that share terms. - if ( $this->in_same_term ) { - $terms = get_the_terms( $this->current_post->ID, $args['taxonomy'] ); - - if ( is_array( $terms ) && ! empty( $terms ) ) { - $terms = wp_list_pluck( $terms, 'term_id' ); - $terms = array_values( $terms ); - $terms = array_map( 'intval', $terms ); - } else { - unset( $terms ); - } - } - - // Handle excluded terms. - if ( $this->excluded_terms ) { - $tax_query[] = array( - 'taxonomy' => $args['taxonomy'], - 'slugs' => $this->excluded_terms, - 'compare' => 'NOT IN', - ); - } - - // If requesting same term, ensure excluded terms don't appear in term list. - if ( isset( $terms ) ) { - if ( isset( $this->excluded_terms ) && is_array( $this->excluded_terms ) ) { - $terms = array_diff( $terms, $this->excluded_terms ); + $posts_in_ex_terms_sql = $wpdb->prepare( "AND tt.taxonomy = %s", $taxonomy ); + if ( ! empty( $excluded_terms ) ) { + if ( ! is_array( $excluded_terms ) ) { + // back-compat, $excluded_terms used to be $excluded_terms with IDs separated by " and " + if ( false !== strpos( $excluded_terms, ' and ' ) ) { + _deprecated_argument( __FUNCTION__, '3.3', sprintf( __( 'Use commas instead of %s to separate excluded terms.' ), "'and'" ) ); + $excluded_terms = explode( ' and ', $excluded_terms ); + } else { + $excluded_terms = explode( ',', $excluded_terms ); + } } - if ( ! empty( $terms ) ) { - $tax_query[] = array( - 'taxonomy' => $args['taxonomy'], - 'terms' => $terms, - ); + $excluded_terms = array_map( 'intval', $excluded_terms ); + + if ( ! empty( $term_array ) ) { + $excluded_terms = array_diff( $excluded_terms, $term_array ); + $posts_in_ex_terms_sql = ''; + } + + if ( ! empty( $excluded_terms ) ) { + $posts_in_ex_terms_sql = $wpdb->prepare( " AND tt.taxonomy = %s AND tt.term_id NOT IN (" . implode( $excluded_terms, ',' ) . ')', $taxonomy ); } } - - // If we have a tax query, add it to our query args. - if ( $tax_query ) { - $query_args['tax_query'] = $tax_query; - } - - // And now, the date constraint. - $date_query_key = 'previous' === $this->adjacent ? 'before' : 'after'; - - $query_args['date_query'][] = array( - $date_query_key => $this->current_post->post_date, - 'inclusive' => true, - ); - - // Ensure the current post isn't returned, since we're using an inclusive date query. - $query_args['post__not_in'] = array( $this->current_post->ID ); - - /** - * Filter the arguments passed to WP_Query when finding an adjacent post. - * - * @since 3.9.0 - * - * @param array $query_args WP_Query arguments. - * @param array $args Arguments passed to WP_Adjacent_Post. - */ - $query_args = apply_filters( 'get_adjacent_post_query_args', $query_args, $args ); - - add_filter( 'posts_clauses', array( $this, 'filter' ) ); - $query = new WP_Query( $query_args ); - - if ( $query->posts ) { - $this->adjacent_post = $query->post; - } else { - $this->adjacent_post = false; - } } - /** - * Apply the deprecated filters to WP_Query's clauses. - * - * @param array $clauses - * @return array - */ - public function filter( $clauses ) { - /* - * Immediately deregister these legacy filters to avoid modifying - * any calls to WP_Query from filter callbacks hooked to WP_Query filters. - */ - remove_filter( 'posts_clauses', array( $this, 'filter' ) ); + $adjacent = $previous ? 'previous' : 'next'; + $op = $previous ? '<' : '>'; + $order = $previous ? 'DESC' : 'ASC'; - /** - * If no legacy filter callbacks are registered, proceed no further. - */ - if ( ! has_filter( 'get_' . $this->adjacent . '_post_join' ) && ! has_filter( 'get_' . $this->adjacent . '_post_where' ) && ! has_filter( 'get_' . $this->adjacent . '_post_sort' ) ) { - return $clauses; - } + $join = apply_filters( "get_{$adjacent}_post_join", $join, $in_same_term, $excluded_terms ); + $where = apply_filters( "get_{$adjacent}_post_where", $wpdb->prepare( "WHERE p.post_date $op %s AND p.post_type = %s AND p.post_status = 'publish' $posts_in_ex_terms_sql", $current_post_date, $post->post_type), $in_same_term, $excluded_terms ); + $sort = apply_filters( "get_{$adjacent}_post_sort", "ORDER BY p.post_date $order LIMIT 1" ); - /** - * Posts table must be aliased as `p` for backwards compatibility with query previously generated by `get_adjacent_post()`. - */ - $clauses = array_map( array( $this, 'alias_posts_table' ), $clauses ); - - /** - * Apply the legacy `join` filter. - */ - if ( has_filter( 'get_' . $this->adjacent . '_post_join' ) ) { - $clauses['join'] = $this->filter_join( $clauses['join'] ); - } - - /** - * Posts table must be aliased as `p` for backwards compatibility with query previously generated by `get_adjacent_post()`. - * No filter on the table name exists, so we have to leverage the next applied filter, that for the `join` clause. - * We wait to apply this until after the legacy filter is applied so that the legacy filter doesn't remove the alias. - */ - $clauses['join'] = 'AS p ' . $clauses['join']; - - /** - * Apply the legacy `where` filter. - */ - if ( has_filter( 'get_' . $this->adjacent . '_post_where' ) ) { - $clauses['where'] = $this->filter_where( $clauses['where'] ); - } - - /* - * The legacy `sort` filter combined the ORDER BY and LIMIT clauses, - * while `WP_Query` does not, which requires special handling. - */ - if ( has_filter( 'get_' . $this->adjacent . '_post_sort' ) ) { - $sort_clauses = $this->filter_sort( $clauses['orderby'], $clauses['limits'] ); - $clauses = array_merge( $clauses, $sort_clauses ); - } - - return $clauses; + $query = "SELECT p.ID FROM $wpdb->posts AS p $join $where $sort"; + $query_key = 'adjacent_post_' . md5( $query ); + $result = wp_cache_get( $query_key, 'counts' ); + if ( false !== $result ) { + if ( $result ) + $result = get_post( $result ); + return $result; } - /** - * Alias posts table as `p` to match query previously built by `get_adjacent_post()`. - * - * @global $wpdb - * @param string Clause to alias - * @return string - */ - protected function alias_posts_table( $clause ) { - global $wpdb; + $result = $wpdb->get_var( $query ); + if ( null === $result ) + $result = ''; - return str_replace( $wpdb->posts, 'p', $clause ); - } + wp_cache_set( $query_key, $result, 'counts' ); - /** - * Apply the deprecated `join` clause filter to the clause built by WP_Query. - * - * @param string $join - * @return string - */ - protected function filter_join( $join ) { - /** - * @deprecated 3.9.0 - */ - return apply_filters( 'get_' . $this->adjacent . '_post_join', $join, $this->in_same_term, $this->excluded_terms ); - } + if ( $result ) + $result = get_post( $result ); - /** - * Apply the deprecated `where` clause filter to the clause built by WP_Query. - * - * @param string $join - * @return string - */ - protected function filter_where( $where ) { - $where = trim( $where ); - - // The legacy filter passed the entire clause, including the `WHERE`, while WP_Query's filter does not. - // We prepend the `WHERE` for the benefit of legacy callbacks that look for it. - if ( 0 !== stripos( $where, 'where' ) ) { - $where = 'WHERE 1=1 ' . $where; - } - - /** - * @deprecated 3.9.0 - */ - $where = apply_filters( 'get_' . $this->adjacent . '_post_where', $where, $this->in_same_term, $this->excluded_terms ); - - $where = trim( $where ); - - // The legacy filter passed the entire clause, including the `WHERE`, while WP_Query's filter does not. - // Removing the `WHERE` is necessary as we've added it above, and the legacy filter could include it in the returned string. - if ( 0 === stripos( $where, 'where 1=1' ) ) { - $where = substr( $where, 9 ); - } elseif ( 0 === stripos( $where, 'where' ) ) { - $where = substr( $where, 5 ); - } - - $where = trim( $where ); - - // WP_Query expects that the string returned begins with `AND`, as it is prepended with "1=1" when the clauses are joined - if ( 0 !== stripos( $where, 'and' ) ) { - $where = 'AND ' . $where; - } - - return $where; - } - - /** - * Apply deprecated `sort` filter, which applies to both the ORDER BY and LIMIT clauses. - * - * @param string $orderby - * @param string $limits - * @return array - */ - protected function filter_sort( $orderby, $limits ) { - /** - * @deprecated 3.9.0 - */ - $sort = apply_filters( 'get_' . $this->adjacent . '_post_sort', 'ORDER BY ' . $orderby . ' ' . $limits ); - - if ( empty( $sort ) ) { - return compact( 'orderby', 'limits' ); - } - - // The legacy filter could allow either clause to be removed, or their order inverted, so we need to know what we have and where. - $has_order_by = stripos( $sort, 'order by' ); - $has_limit = stripos( $sort, 'limit' ); - - // Split the string of one or two clauses into their respective array keys - if ( false !== $has_order_by && false !== $has_limit ) { - /* - * The LIMIT clause cannot appear before the ORDER BY clause in a valid query - * However, since the legacy filter would allow a user to invert the order, - * we maintain that handling so the same errors are triggered. - */ - if ( $has_order_by < $has_limit ) { - $orderby = trim( str_ireplace( 'order by', '', substr( $sort, 0, $has_limit ) ) ); - $limits = trim( substr( $sort, $has_limit ) ); - } else { - $orderby = trim( str_ireplace( 'order by', '', substr( $sort, $has_order_by ) ) ); - $limits = trim( substr( $sort, 0, $has_order_by ) ); - } - } elseif ( false !== $has_order_by ) { - $orderby = trim( str_ireplace( 'order by', '', $sort ) ); - $limits = ''; - } elseif ( false !== $has_limit ) { - $orderby = ''; - $limits = trim( $sort ); - } - - return compact( 'orderby', 'limits' ); - } + return $result; } /** diff --git a/wp-includes/load.php b/wp-includes/load.php index ffafea79da..f46572e3cc 100644 --- a/wp-includes/load.php +++ b/wp-includes/load.php @@ -377,7 +377,7 @@ function wp_using_ext_object_cache( $using = null ) { $current_using = $_wp_using_ext_object_cache; if ( null !== $using ) $_wp_using_ext_object_cache = $using; - return (bool) $current_using; + return $current_using; } /** diff --git a/wp-includes/query.php b/wp-includes/query.php index 05d4979d4f..fcaac1008f 100644 --- a/wp-includes/query.php +++ b/wp-includes/query.php @@ -3221,9 +3221,6 @@ class WP_Query { } $split_the_query = ( $old_request == $this->request && "$wpdb->posts.*" == $fields && !empty( $limits ) && $q['posts_per_page'] < 500 ); - if ( $split_the_query && isset( $q['split_the_query'] ) && empty( $q['split_the_query'] ) ) { - $split_the_query = false; - } /** * Filter whether to split the query.