Added dependency plugins
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Moris Zen
203
wordpress/wp-content/plugins/wp-graphql/src/Data/Config.php
Executable file
203
wordpress/wp-content/plugins/wp-graphql/src/Data/Config.php
Executable file
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<?php
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namespace WPGraphQL\Data;
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/**
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* Class Config
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*
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* This class contains configurations for various data-related things, such as query filters for cursor pagination.
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*
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* @package WPGraphQL\Data
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*/
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class Config {
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/**
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* Config constructor.
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*/
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public function __construct() {
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/**
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* Filter the term_clauses in the WP_Term_Query to allow for cursor pagination support where a Term ID
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* can be used as a point of comparison when slicing the results to return.
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*/
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add_filter( 'comments_clauses', [ $this, 'graphql_wp_comments_query_cursor_pagination_support' ], 10, 2 );
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/**
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* Filter the WP_Query to support cursor based pagination where a post ID can be used
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* as a point of comparison when slicing the results to return.
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*/
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add_filter( 'posts_where', [ $this, 'graphql_wp_query_cursor_pagination_support' ], 10, 2 );
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/**
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* Filter the term_clauses in the WP_Term_Query to allow for cursor pagination support where a Term ID
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* can be used as a point of comparison when slicing the results to return.
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*/
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add_filter( 'terms_clauses', [ $this, 'graphql_wp_term_query_cursor_pagination_support' ], 10, 3 );
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}
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/**
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* This filters the WPQuery 'where' $args, enforcing the query to return results before or
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* after the referenced cursor
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*
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* @param string $where The WHERE clause of the query.
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* @param \WP_Query $query The WP_Query instance (passed by reference).
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*
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* @return string
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*/
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public function graphql_wp_query_cursor_pagination_support( $where, \WP_Query $query ) {
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/**
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* Access the global $wpdb object
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*/
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global $wpdb;
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/**
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* If there's a graphql_cursor_offset in the query, we should check to see if
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* it should be applied to the query
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*/
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if ( defined( 'GRAPHQL_REQUEST' ) && GRAPHQL_REQUEST ) {
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$cursor_offset = ! empty( $query->query_vars['graphql_cursor_offset'] ) ? $query->query_vars['graphql_cursor_offset'] : 0;
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/**
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* Ensure the cursor_offset is a positive integer
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*/
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if ( is_integer( $cursor_offset ) && 0 < $cursor_offset ) {
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$compare = ! empty( $query->get( 'graphql_cursor_compare' ) ) ? $query->get( 'graphql_cursor_compare' ) : '>';
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$compare = in_array( $compare, [ '>', '<' ], true ) ? $compare : '>';
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$compare_opposite = ( '<' === $compare ) ? '>' : '<';
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// Get the $cursor_post
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$cursor_post = get_post( $cursor_offset );
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/**
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* If the $cursor_post exists (hasn't been deleted), modify the query to compare based on the ID and post_date values
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* But if the $cursor_post no longer exists, we're forced to just compare with the ID
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*
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*/
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if ( ! empty( $cursor_post ) && ! empty( $cursor_post->post_date ) ) {
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$orderby = $query->get( 'orderby' );
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if ( ! empty( $orderby ) && is_array( $orderby ) ) {
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foreach ( $orderby as $by => $order ) {
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$order_compare = ( 'ASC' === $order ) ? '>' : '<';
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$value = $cursor_post->{$by};
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if ( ! empty( $by ) && ! empty( $value ) ) {
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$where .= $wpdb->prepare( " AND {$wpdb->posts}.{$by} {$order_compare} %s", $value );
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}
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}
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} else {
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$where .= $wpdb->prepare( " AND {$wpdb->posts}.post_date {$compare}= %s AND {$wpdb->posts}.ID != %d", esc_sql( $cursor_post->post_date ), absint( $cursor_offset ) );
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}
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} else {
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$where .= $wpdb->prepare( " AND {$wpdb->posts}.ID {$compare} %d", $cursor_offset );
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}
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}
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}
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return $where;
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}
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/**
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* This filters the term_clauses in the WP_Term_Query to support cursor based pagination, where we can
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* move forward or backward from a particular record, instead of typical offset pagination which can be
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* much more expensive and less accurate.
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*
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* @param array $pieces Terms query SQL clauses.
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* @param array $taxonomies An array of taxonomies.
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* @param array $args An array of terms query arguments.
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*
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* @return array $pieces
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*/
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public function graphql_wp_term_query_cursor_pagination_support( array $pieces, $taxonomies, $args ) {
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/**
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* Access the global $wpdb object
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*/
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global $wpdb;
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if ( defined( 'GRAPHQL_REQUEST' ) && GRAPHQL_REQUEST && ! empty( $args['graphql_cursor_offset'] ) ) {
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$cursor_offset = $args['graphql_cursor_offset'];
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/**
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* Ensure the cursor_offset is a positive integer
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*/
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if ( is_integer( $cursor_offset ) && 0 < $cursor_offset ) {
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$compare = ! empty( $args['graphql_cursor_compare'] ) ? $args['graphql_cursor_compare'] : '>';
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$compare = in_array( $compare, [ '>', '<' ], true ) ? $compare : '>';
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$order_by = ! empty( $args['orderby'] ) ? $args['orderby'] : 'comment_date';
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$order = ! empty( $args['order'] ) ? $args['order'] : 'DESC';
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$order_compare = ( 'ASC' === $order ) ? '>' : '<';
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// Get the $cursor_post
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$cursor_term = get_term( $cursor_offset );
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if ( ! empty( $cursor_term ) && ! empty( $cursor_term->name ) ) {
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$pieces['where'] .= $wpdb->prepare( " AND t.{$order_by} {$order_compare} %s", $cursor_term->{$order_by} );
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} else {
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$pieces['where'] .= $wpdb->prepare( ' AND t.term_id %1$s %2$d', $compare, $cursor_offset );
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}
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}
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}
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return $pieces;
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}
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/**
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* This returns a modified version of the $pieces of the comment query clauses if the request
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* is a GRAPHQL_REQUEST and the query has a graphql_cursor_offset defined
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*
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* @param array $pieces A compacted array of comment query clauses.
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* @param \WP_Comment_Query $query Current instance of WP_Comment_Query, passed by reference.
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*
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* @return array $pieces
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*/
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public function graphql_wp_comments_query_cursor_pagination_support( array $pieces, \WP_Comment_Query $query ) {
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/**
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* Access the global $wpdb object
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*/
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global $wpdb;
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if (
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defined( 'GRAPHQL_REQUEST' ) && GRAPHQL_REQUEST &&
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( is_array( $query->query_vars ) && array_key_exists( 'graphql_cursor_offset', $query->query_vars ) )
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) {
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$cursor_offset = $query->query_vars['graphql_cursor_offset'];
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/**
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* Ensure the cursor_offset is a positive integer
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*/
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if ( is_integer( $cursor_offset ) && 0 < $cursor_offset ) {
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$compare = ! empty( $query->get( 'graphql_cursor_compare' ) ) ? $query->get( 'graphql_cursor_compare' ) : '>';
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$compare = in_array( $compare, [ '>', '<' ], true ) ? $compare : '>';
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$order_by = ! empty( $query->query_vars['order_by'] ) ? $query->query_vars['order_by'] : 'comment_date';
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$order = ! empty( $query->query_vars['order'] ) ? $query->query_vars['order'] : 'DESC';
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$order_compare = ( 'ASC' === $order ) ? '>' : '<';
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// Get the $cursor_post
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$cursor_comment = get_comment( $cursor_offset );
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if ( ! empty( $cursor_comment ) ) {
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$pieces['where'] .= $wpdb->prepare( " AND {$order_by} {$order_compare} %s", $cursor_comment->{$order_by} );
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} else {
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$pieces['where'] .= $wpdb->prepare( ' AND comment_ID %1$s %2$d', $compare, $cursor_offset );
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}
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}
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}
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return $pieces;
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}
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}
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