Make get_meta_sql() a standalone function. See #15032
git-svn-id: http://svn.automattic.com/wordpress/trunk@16266 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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scribu
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@ -71,99 +71,6 @@ class WP_Object_Query {
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$qv['meta_query'] = $meta_query;
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}
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/*
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* Used internally to generate an SQL string for searching across multiple meta key = value pairs
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*
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* @access protected
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* @since 3.1.0
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*
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* @param array $meta_query List of metadata queries. A single query is an associative array:
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* - 'key' string The meta key
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* - 'value' string|array The meta value
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* - 'compare' (optional) string How to compare the key to the value.
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* Possible values: '=', '!=', '>', '>=', '<', '<=', 'LIKE', 'NOT LIKE', 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN'.
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* Default: '='
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* - 'type' string (optional) The type of the value.
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* Possible values: 'NUMERIC', 'BINARY', 'CHAR', 'DATE', 'DATETIME', 'DECIMAL', 'SIGNED', 'TIME', 'UNSIGNED'.
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* Default: 'CHAR'
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*
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* @param string $meta_type
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* @param string $primary_table
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* @param string $primary_id_column
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* @return array( $join_sql, $where_sql )
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*/
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function get_meta_sql( $meta_query, $meta_type, $primary_table, $primary_id_column ) {
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global $wpdb;
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if ( ! $meta_table = _get_meta_table( $meta_type ) )
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return false;
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$meta_id_column = esc_sql( $meta_type . '_id' );
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$clauses = array();
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$join = '';
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$where = '';
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$i = 0;
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foreach ( $meta_query as $q ) {
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$meta_key = isset( $q['key'] ) ? trim( $q['key'] ) : '';
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$meta_value = isset( $q['value'] ) ? $q['value'] : '';
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$meta_compare = isset( $q['compare'] ) ? strtoupper( $q['compare'] ) : '=';
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$meta_type = isset( $q['type'] ) ? strtoupper( $q['type'] ) : 'CHAR';
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if ( ! in_array( $meta_compare, array( '=', '!=', '>', '>=', '<', '<=', 'LIKE', 'NOT LIKE', 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN' ) ) )
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$meta_compare = '=';
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if ( 'NUMERIC' == $meta_type )
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$meta_type = 'SIGNED';
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elseif ( ! in_array( $meta_type, array( 'BINARY', 'CHAR', 'DATE', 'DATETIME', 'DECIMAL', 'SIGNED', 'TIME', 'UNSIGNED' ) ) )
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$meta_type = 'CHAR';
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if ( empty( $meta_key ) && empty( $meta_value ) )
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continue;
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$alias = $i ? 'mt' . $i : $meta_table;
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$join .= "\nINNER JOIN $meta_table";
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$join .= $i ? " AS $alias" : '';
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$join .= " ON ($primary_table.$primary_id_column = $alias.$meta_id_column)";
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$i++;
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if ( !empty( $meta_key ) )
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$where .= $wpdb->prepare( " AND $alias.meta_key = %s", $meta_key );
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if ( in_array( $meta_compare, array( 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN' ) ) ) {
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if ( ! is_array( $meta_value ) )
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$meta_value = preg_split( '/[,\s]+/', $meta_value );
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} else {
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$meta_value = trim( $meta_value );
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}
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if ( empty( $meta_value ) )
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continue;
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if ( 'IN' == substr( $meta_compare, -2) ) {
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$meta_field_types = substr( str_repeat( ',%s', count( $meta_value ) ), 1 );
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$meta_compare_string = "($meta_field_types)";
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unset( $meta_field_types );
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} elseif ( 'BETWEEN' == substr( $meta_compare, -7) ) {
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$meta_value = array_slice( $meta_value, 0, 2 );
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$meta_compare_string = '%s AND %s';
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} elseif ( 'LIKE' == substr( $meta_compare, -4 ) ) {
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$meta_value = '%' . like_escape( $meta_value ) . '%';
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$meta_compare_string = '%s';
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} else {
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$meta_compare_string = '%s';
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}
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$where .= $wpdb->prepare( " AND CAST($alias.meta_value AS {$meta_type}) {$meta_compare} {$meta_compare_string}", $meta_value );
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unset( $meta_compare_string );
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}
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return apply_filters( 'get_meta_sql', compact( 'join', 'where' ), $meta_query, $meta_type, $primary_table, $primary_id_column );
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}
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/*
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* Used internally to generate an SQL string for searching across multiple taxonomies
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*
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@ -351,6 +351,98 @@ function update_meta_cache($meta_type, $object_ids) {
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return $cache;
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}
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/*
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* Given a meta query, generates SQL clauses to be appended to a main query
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*
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* @since 3.1.0
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*
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* @param array $meta_query List of metadata queries. A single query is an associative array:
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* - 'key' string The meta key
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* - 'value' string|array The meta value
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* - 'compare' (optional) string How to compare the key to the value.
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* Possible values: '=', '!=', '>', '>=', '<', '<=', 'LIKE', 'NOT LIKE', 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN'.
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* Default: '='
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* - 'type' string (optional) The type of the value.
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* Possible values: 'NUMERIC', 'BINARY', 'CHAR', 'DATE', 'DATETIME', 'DECIMAL', 'SIGNED', 'TIME', 'UNSIGNED'.
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* Default: 'CHAR'
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*
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* @param string $meta_type
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* @param string $primary_table
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* @param string $primary_id_column
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* @return array( 'join' => $join_sql, 'where' => $where_sql )
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*/
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function get_meta_sql( $meta_query, $meta_type, $primary_table, $primary_id_column ) {
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global $wpdb;
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if ( ! $meta_table = _get_meta_table( $meta_type ) )
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return false;
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$meta_id_column = esc_sql( $meta_type . '_id' );
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$clauses = array();
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$join = '';
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$where = '';
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$i = 0;
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foreach ( $meta_query as $q ) {
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$meta_key = isset( $q['key'] ) ? trim( $q['key'] ) : '';
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$meta_value = isset( $q['value'] ) ? $q['value'] : '';
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$meta_compare = isset( $q['compare'] ) ? strtoupper( $q['compare'] ) : '=';
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$meta_type = isset( $q['type'] ) ? strtoupper( $q['type'] ) : 'CHAR';
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if ( ! in_array( $meta_compare, array( '=', '!=', '>', '>=', '<', '<=', 'LIKE', 'NOT LIKE', 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN' ) ) )
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$meta_compare = '=';
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if ( 'NUMERIC' == $meta_type )
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$meta_type = 'SIGNED';
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elseif ( ! in_array( $meta_type, array( 'BINARY', 'CHAR', 'DATE', 'DATETIME', 'DECIMAL', 'SIGNED', 'TIME', 'UNSIGNED' ) ) )
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$meta_type = 'CHAR';
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if ( empty( $meta_key ) && empty( $meta_value ) )
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continue;
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$alias = $i ? 'mt' . $i : $meta_table;
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$join .= "\nINNER JOIN $meta_table";
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$join .= $i ? " AS $alias" : '';
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$join .= " ON ($primary_table.$primary_id_column = $alias.$meta_id_column)";
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$i++;
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if ( !empty( $meta_key ) )
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$where .= $wpdb->prepare( " AND $alias.meta_key = %s", $meta_key );
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if ( in_array( $meta_compare, array( 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN' ) ) ) {
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if ( ! is_array( $meta_value ) )
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$meta_value = preg_split( '/[,\s]+/', $meta_value );
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} else {
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$meta_value = trim( $meta_value );
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}
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if ( empty( $meta_value ) )
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continue;
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if ( 'IN' == substr( $meta_compare, -2) ) {
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$meta_field_types = substr( str_repeat( ',%s', count( $meta_value ) ), 1 );
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$meta_compare_string = "($meta_field_types)";
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unset( $meta_field_types );
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} elseif ( 'BETWEEN' == substr( $meta_compare, -7) ) {
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$meta_value = array_slice( $meta_value, 0, 2 );
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$meta_compare_string = '%s AND %s';
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} elseif ( 'LIKE' == substr( $meta_compare, -4 ) ) {
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$meta_value = '%' . like_escape( $meta_value ) . '%';
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$meta_compare_string = '%s';
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} else {
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$meta_compare_string = '%s';
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}
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$where .= $wpdb->prepare( " AND CAST($alias.meta_value AS {$meta_type}) {$meta_compare} {$meta_compare_string}", $meta_value );
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unset( $meta_compare_string );
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}
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return apply_filters( 'get_meta_sql', compact( 'join', 'where' ), $meta_query, $meta_type, $primary_table, $primary_id_column );
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}
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/**
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* Retrieve the name of the metadata table for the specified object type.
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*
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@ -2147,7 +2147,7 @@ class WP_Query extends WP_Object_Query {
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}
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if ( !empty( $q['meta_query'] ) ) {
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$clauses = $this->get_meta_sql( $q['meta_query'], 'post', $wpdb->posts, 'ID' );
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$clauses = get_meta_sql( $q['meta_query'], 'post', $wpdb->posts, 'ID' );
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$join .= $clauses['join'];
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$where .= $clauses['where'];
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}
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@ -481,7 +481,7 @@ class WP_User_Query extends WP_Object_Query {
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}
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if ( !empty( $qv['meta_query'] ) ) {
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$clauses = $this->get_meta_sql( $qv['meta_query'], 'user', $wpdb->users, 'ID' );
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$clauses = get_meta_sql( $qv['meta_query'], 'user', $wpdb->users, 'ID' );
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$this->query_from .= $clauses['join'];
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$this->query_where .= $clauses['where'];
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}
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