, to both defaults and request arrays. * * This method is used to expose the private query_vars array to hooks, * allowing them to manipulate query vars just-in-time. * * @since 1.0.0 * * @param string $key * @param string $value */ public function set_query_var( $key = '', $value = '' ) { $this->query_var_defaults[ $key ] = $value; $this->query_vars[ $key ] = $value; } /** * Check whether a query variable strictly equals the unique default * starting value. * * @since 1.1.0 * @param string $key * @return bool */ public function is_query_var_default( $key = '' ) { return (bool) ( $this->query_vars[ $key ] === $this->query_var_default_value ); } /** Private Getters *******************************************************/ /** * Pass-through method to return a new Meta object. * * @since 1.0.0 * * @param array $args See Queries\Meta * * @return Queries\Meta */ private function get_meta_query( $args = array() ) { return new Queries\Meta( $args ); } /** * Pass-through method to return a new Compare object. * * @since 1.0.0 * * @param array $args See Queries\Compare * * @return Queries\Compare */ private function get_compare_query( $args = array() ) { return new Queries\Compare( $args ); } /** * Pass-through method to return a new Queries\Date object. * * @since 1.0.0 * * @param array $args See Queries\Date * * @return Queries\Date */ private function get_date_query( $args = array() ) { return new Queries\Date( $args ); } /** * Return the current time as a UTC timestamp. * * This is used by add_item() and update_item() * * @since 1.0.0 * * @return string */ private function get_current_time() { return gmdate( "Y-m-d\TH:i:s\Z" ); } /** * Return the literal table name (with prefix) from the database interface. * * @since 1.0.0 * * @return string */ private function get_table_name() { return $this->get_db()->{$this->table_name}; } /** * Return array of column names. * * @since 1.0.0 * * @return array */ private function get_column_names() { return array_flip( $this->get_columns( array(), 'and', 'name' ) ); } /** * Return the primary database column name. * * @since 1.0.0 * * @return string Default "id", Primary column name if not empty */ private function get_primary_column_name() { return $this->get_column_field( array( 'primary' => true ), 'name', 'id' ); } /** * Get a column from an array of arguments. * * @since 1.0.0 * * @return mixed Column object, or false */ private function get_column_field( $args = array(), $field = '', $default = false ) { // Get the column $column = $this->get_column_by( $args ); // Return field, or default return isset( $column->{$field} ) ? $column->{$field} : $default; } /** * Get a column from an array of arguments. * * @since 1.0.0 * * @return mixed Column object, or false */ private function get_column_by( $args = array() ) { // Filter columns $filter = $this->get_columns( $args ); // Return column or false return ! empty( $filter ) ? reset( $filter ) : false; } /** * Get columns from an array of arguments. * * @since 1.0.0 */ private function get_columns( $args = array(), $operator = 'and', $field = false ) { // Filter columns $filter = wp_filter_object_list( $this->columns, $args, $operator, $field ); // Return column or false return ! empty( $filter ) ? array_values( $filter ) : array(); } /** * Get a single database row by any column and value, skipping cache. * * @since 1.0.0 * * @param string $column_name Name of database column * @param string $column_value Value to query for * @return object|false False if empty/error, Object if successful */ private function get_item_raw( $column_name = '', $column_value = '' ) { // Bail if no name or value if ( empty( $column_name ) || empty( $column_value ) ) { return false; } // Bail if values aren't query'able if ( ! is_string( $column_name ) || ! is_scalar( $column_value ) ) { return false; } // Get query parts $table = $this->get_table_name(); $pattern = $this->get_column_field( array( 'name' => $column_name ), 'pattern', '%s' ); // Query database $query = "SELECT * FROM {$table} WHERE {$column_name} = {$pattern} LIMIT 1"; $select = $this->get_db()->prepare( $query, $column_value ); $result = $this->get_db()->get_row( $select ); // Bail on failure if ( ! $this->is_success( $result ) ) { return false; } // Return row return $result; } /** * Retrieves a list of items matching the query vars. * * @since 1.0.0 * * @return array|int List of items, or number of items when 'count' is passed as a query var. */ private function get_items() { /** * Fires before object items are retrieved. * * @since 1.0.0 * * @param Query &$this Current instance of Query, passed by reference. */ do_action_ref_array( $this->apply_prefix( "pre_get_{$this->item_name_plural}" ), array( &$this ) ); // Never limit, never update item/meta caches when counting if ( ! empty( $this->query_vars['count'] ) ) { $this->query_vars['number'] = false; $this->query_vars['no_found_rows'] = true; $this->query_vars['update_item_cache'] = false; $this->query_vars['update_meta_cache'] = false; } // Check the cache $cache_key = $this->get_cache_key(); $cache_value = $this->cache_get( $cache_key, $this->cache_group ); // No cache value if ( false === $cache_value ) { $item_ids = $this->get_item_ids(); // Set the number of found items $this->set_found_items( $item_ids ); // Format the cached value $cache_value = array( 'item_ids' => $item_ids, 'found_items' => intval( $this->found_items ), ); // Add value to the cache $this->cache_add( $cache_key, $cache_value, $this->cache_group ); // Value exists in cache } else { $item_ids = $cache_value['item_ids']; $this->found_items = intval( $cache_value['found_items'] ); } // Pagination if ( ! empty( $this->found_items ) && ! empty( $this->query_vars['number'] ) ) { $this->max_num_pages = ceil( $this->found_items / $this->query_vars['number'] ); } // Cast to int if not grouping counts if ( ! empty( $this->query_vars['count'] ) && empty( $this->query_vars['groupby'] ) ) { $item_ids = intval( $item_ids ); } // Set items from IDs $this->set_items( $item_ids ); // Return array of items return $this->items; } /** * Used internally to get a list of item IDs matching the query vars. * * @since 1.0.0 * * @return int|array A single count of item IDs if a count query. An array * of item IDs if a full query. */ private function get_item_ids() { // Setup primary column, and parse the where clause $this->parse_where(); // Order & Order By $order = $this->parse_order( $this->query_vars['order'] ); $orderby = $this->get_order_by( $order ); // Limit & Offset $limit = absint( $this->query_vars['number'] ); $offset = absint( $this->query_vars['offset'] ); // Limits if ( ! empty( $limit ) ) { $limits = ! empty( $offset ) ? "LIMIT {$offset}, {$limit}" : "LIMIT {$limit}"; } else { $limits = ''; } // Where & Join $where = implode( ' AND ', $this->query_clauses['where'] ); $join = implode( ', ', $this->query_clauses['join'] ); // Group by $groupby = $this->parse_groupby( $this->query_vars['groupby'] ); // Fields $fields = $this->parse_fields( $this->query_vars['fields'] ); // Setup the query array (compact() is too opaque here) $query = array( 'fields' => $fields, 'join' => $join, 'where' => $where, 'orderby' => $orderby, 'limits' => $limits, 'groupby' => $groupby ); /** * Filters the item query clauses. * * @since 1.0.0 * * @param array $pieces A compacted array of item query clauses. * @param Query &$this Current instance passed by reference. */ $clauses = (array) apply_filters_ref_array( $this->apply_prefix( "{$this->item_name_plural}_query_clauses" ), array( $query, &$this ) ); // Setup request $this->set_request_clauses( $clauses ); $this->set_request(); // Return count if ( ! empty( $this->query_vars['count'] ) ) { // Get vars or results $retval = empty( $this->query_vars['groupby'] ) ? $this->get_db()->get_var( $this->request ) : $this->get_db()->get_results( $this->request, ARRAY_A ); // Return vars or results return $retval; } // Get IDs $item_ids = $this->get_db()->get_col( $this->request ); // Return parsed IDs return wp_parse_id_list( $item_ids ); } /** * Get the ORDERBY clause. * * @since 1.0.0 * * @param string $order * @return string */ private function get_order_by( $order = '' ) { // Default orderby primary column $parsed = $this->parse_orderby(); $orderby = "{$parsed} {$order}"; // Disable ORDER BY if counting, or: 'none', an empty array, or false. if ( ! empty( $this->query_vars['count'] ) || in_array( $this->query_vars['orderby'], array( 'none', array(), false ), true ) ) { $orderby = ''; // Ordering by something, so figure it out } elseif ( ! empty( $this->query_vars['orderby'] ) ) { // Array of keys, or comma separated $ordersby = is_array( $this->query_vars['orderby'] ) ? $this->query_vars['orderby'] : preg_split( '/[,\s]/', $this->query_vars['orderby'] ); $orderby_array = array(); $possible_ins = $this->get_columns( array( 'in' => true ), 'and', 'name' ); $sortables = $this->get_columns( array( 'sortable' => true ), 'and', 'name' ); // Loop through possible order by's foreach ( $ordersby as $_key => $_value ) { // Skip if empty if ( empty( $_value ) ) { continue; } // Key is numeric if ( is_int( $_key ) ) { $_orderby = $_value; $_item = $order; // Key is string } else { $_orderby = $_key; $_item = $_value; } // Skip if not sortable if ( ! in_array( $_value, $sortables, true ) ) { continue; } // Parse orderby $parsed = $this->parse_orderby( $_orderby ); // Skip if empty if ( empty( $parsed ) ) { continue; } // Set if __in if ( in_array( $_orderby, $possible_ins, true ) ) { $orderby_array[] = "{$parsed} {$order}"; continue; } // Append parsed orderby to array $orderby_array[] = $parsed . ' ' . $this->parse_order( $_item ); } // Only set if valid orderby if ( ! empty( $orderby_array ) ) { $orderby = implode( ', ', $orderby_array ); } } // Return parsed orderby return $orderby; } /** * Used internally to generate an SQL string for searching across multiple * columns. * * @since 1.0.0 * * @param string $string Search string. * @param array $columns Columns to search. * @return string Search SQL. */ private function get_search_sql( $string = '', $columns = array() ) { // Array or String $like = ( false !== strpos( $string, '*' ) ) ? '%' . implode( '%', array_map( array( $this->get_db(), 'esc_like' ), explode( '*', $string ) ) ) . '%' : '%' . $this->get_db()->esc_like( $string ) . '%'; // Default array $searches = array(); // Build search SQL foreach ( $columns as $column ) { $searches[] = $this->get_db()->prepare( "{$column} LIKE %s", $like ); } // Return the clause return '(' . implode( ' OR ', $searches ) . ')'; } /** Private Parsers *******************************************************/ /** * Parses arguments passed to the item query with default query parameters. * * @since 1.0.0 * * @see Query::__construct() * * @param string|array $query Array or string of Query arguments. */ private function parse_query( $query = array() ) { // Setup the query_vars_original var $this->query_var_originals = wp_parse_args( $query ); // Setup the query_vars parsed var $this->query_vars = wp_parse_args( $this->query_var_originals, $this->query_var_defaults ); /** * Fires after the item query vars have been parsed. * * @since 1.0.0 * * @param Query &$this The Query instance (passed by reference). */ do_action_ref_array( $this->apply_prefix( "parse_{$this->item_name_plural}_query" ), array( &$this ) ); } /** * Parse the where clauses for all known columns. * * @todo split this method into smaller parts * * @since 1.0.0 */ private function parse_where() { // Defaults $where = $join = $searchable = $date_query = array(); // Loop through columns foreach ( $this->columns as $column ) { // Maybe add name to searchable array if ( true === $column->searchable ) { $searchable[] = $column->name; } // Literal column comparison if ( ! $this->is_query_var_default( $column->name ) ) { // Array (unprepared) if ( is_array( $this->query_vars[ $column->name ] ) ) { $where_id = "'" . implode( "', '", $this->get_db()->_escape( $this->query_vars[ $column->name ] ) ) . "'"; $statement = "{$this->table_alias}.{$column->name} IN ({$where_id})"; // Add to where array $where[ $column->name ] = $statement; // Numeric/String/Float (prepared) } else { $pattern = $this->get_column_field( array( 'name' => $column->name ), 'pattern', '%s' ); $where_id = $this->query_vars[ $column->name ]; $statement = "{$this->table_alias}.{$column->name} = {$pattern}"; // Add to where array $where[ $column->name ] = $this->get_db()->prepare( $statement, $where_id ); } } // __in if ( true === $column->in ) { $where_id = "{$column->name}__in"; // Parse item for an IN clause. if ( isset( $this->query_vars[ $where_id ] ) && is_array( $this->query_vars[ $where_id ] ) ) { // Convert single item arrays to literal column comparisons if ( 1 === count( $this->query_vars[ $where_id ] ) ) { $column_value = reset( $this->query_vars[ $where_id ] ); $statement = "{$this->table_alias}.{$column->name} = %s"; $where[ $column->name ] = $this->get_db()->prepare( $statement, $column_value ); // Implode } else { $where[ $where_id ] = "{$this->table_alias}.{$column->name} IN ( '" . implode( "', '", $this->get_db()->_escape( $this->query_vars[ $where_id ] ) ) . "' )"; } } } // __not_in if ( true === $column->not_in ) { $where_id = "{$column->name}__not_in"; // Parse item for a NOT IN clause. if ( isset( $this->query_vars[ $where_id ] ) && is_array( $this->query_vars[ $where_id ] ) ) { // Convert single item arrays to literal column comparisons if ( 1 === count( $this->query_vars[ $where_id ] ) ) { $column_value = reset( $this->query_vars[ $where_id ] ); $statement = "{$this->table_alias}.{$column->name} != %s"; $where[ $column->name ] = $this->get_db()->prepare( $statement, $column_value ); // Implode } else { $where[ $where_id ] = "{$this->table_alias}.{$column->name} NOT IN ( '" . implode( "', '", $this->get_db()->_escape( $this->query_vars[ $where_id ] ) ) . "' )"; } } } // date_query if ( true === $column->date_query ) { $where_id = "{$column->name}_query"; $column_date = $this->query_vars[ $where_id ]; // Parse item if ( ! empty( $column_date ) ) { // Default arguments $defaults = array( 'column' => "{$this->table_alias}.{$column->name}", 'before' => $column_date, 'inclusive' => true ); // Default date query if ( is_string( $column_date ) ) { $date_query[] = $defaults; // Array query var } elseif ( is_array( $column_date ) ) { // Auto-fill column if empty if ( empty( $column_date['column'] ) ) { $column_date['column'] = $defaults['column']; } // Add clause to date query $date_query[] = $column_date; } } } } // Maybe search if columns are searchable. if ( ! empty( $searchable ) && strlen( $this->query_vars['search'] ) ) { $search_columns = array(); // Intersect against known searchable columns if ( ! empty( $this->query_vars['search_columns'] ) ) { $search_columns = array_intersect( $this->query_vars['search_columns'], $searchable ); } // Default to all searchable columns if ( empty( $search_columns ) ) { $search_columns = $searchable; } /** * Filters the columns to search in a Query search. * * @since 1.0.0 * * @param array $search_columns Array of column names to be searched. * @param string $search Text being searched. * @param object $this The current Query instance. */ $search_columns = (array) apply_filters( $this->apply_prefix( "{$this->item_name_plural}_search_columns" ), $search_columns, $this->query_vars['search'], $this ); // Add search query clause $where['search'] = $this->get_search_sql( $this->query_vars['search'], $search_columns ); } /** Query Classes *****************************************************/ // Get the primary column name & meta table $primary = $this->get_primary_column_name(); $table = $this->get_meta_type(); $and = '/^\s*AND\s*/'; // Maybe perform a meta query. $meta_query = $this->query_vars['meta_query']; if ( ! empty( $meta_query ) && is_array( $meta_query ) ) { $this->meta_query = $this->get_meta_query( $meta_query ); $clauses = $this->meta_query->get_sql( $table, $this->table_alias, $primary, $this ); // Not all objects have meta, so make sure this one exists if ( false !== $clauses ) { // Set join if ( ! empty( $clauses['join'] ) ) { $join['meta_query'] = $clauses['join']; } // Remove " AND " from meta_query query where clause $where['meta_query'] = preg_replace( $and, '', $clauses['where'] ); } } // Maybe perform a compare query. $compare_query = $this->query_vars['compare_query']; if ( ! empty( $compare_query ) && is_array( $compare_query ) ) { $this->compare_query = $this->get_compare_query( $compare_query ); $clauses = $this->compare_query->get_sql( $table, $this->table_alias, $primary, $this ); // Not all objects can compare, so make sure this one exists if ( false !== $clauses ) { // Set join if ( ! empty( $clauses['join'] ) ) { $join['compare_query'] = $clauses['join']; } // Remove " AND " from query where clause. $where['compare_query'] = preg_replace( $and, '', $clauses['where'] ); } } // Only do a date query with an array $date_query = ! empty( $date_query ) ? $date_query : $this->query_vars['date_query']; // Maybe perform a date query if ( ! empty( $date_query ) && is_array( $date_query ) ) { $this->date_query = $this->get_date_query( $date_query ); $clauses = $this->date_query->get_sql( $this->table_name, $this->table_alias, $primary, $this ); // Not all objects are dates, so make sure this one exists if ( false !== $clauses ) { // Set join if ( ! empty( $clauses['join'] ) ) { $join['date_query'] = $clauses['join']; } // Remove " AND " from query where clause. $where['date_query'] = preg_replace( $and, '', $clauses['where'] ); } } // Set where and join clauses $this->query_clauses['where'] = $where; $this->query_clauses['join'] = $join; } /** * Parse which fields to query for. * * @since 1.0.0 * * @param string $fields * @param bool $alias * @return string */ private function parse_fields( $fields = '', $alias = true ) { // Default return value $primary = $this->get_primary_column_name(); $retval = ( true === $alias ) ? "{$this->table_alias}.{$primary}" : $primary; // No fields if ( empty( $fields ) && ! empty( $this->query_vars['count'] ) ) { // Possible fields to group by $groupby_names = $this->parse_groupby( $this->query_vars['groupby'], false ); $groupby_names = ! empty( $groupby_names ) ? "{$groupby_names}" : ''; // Group by or total count $retval = ! empty( $groupby_names ) ? "{$groupby_names}, COUNT(*) as count" : 'COUNT(*)'; } // Return fields (or COUNT) return $retval; } /** * Parses and sanitizes the 'groupby' keys passed into the item query. * * @since 1.0.0 * * @param string $groupby * @param bool $alias * @return string */ private function parse_groupby( $groupby = '', $alias = true ) { // Bail if empty if ( empty( $groupby ) ) { return ''; } // Sanitize groupby columns $groupby = (array) array_map( 'sanitize_key', (array) $groupby ); // Re'flip column names back around $columns = array_flip( $this->get_column_names() ); // Get the intersection of allowed column names to groupby columns $intersect = array_intersect( $columns, $groupby ); // Bail if invalid column if ( empty( $intersect ) ) { return ''; } // Default return value $retval = array(); // Maybe prepend table alias to key foreach ( $intersect as $key ) { $retval[] = ( true === $alias ) ? "{$this->table_alias}.{$key}" : $key; } // Separate sanitized columns return implode( ',', array_values( $retval ) ); } /** * Parses and sanitizes 'orderby' keys passed to the item query. * * @since 1.0.0 * * @param string $orderby Field for the items to be ordered by. * @return string|false Value to used in the ORDER clause. False otherwise. */ private function parse_orderby( $orderby = 'id' ) { // Default value $primary = $this->get_primary_column_name(); $parsed = "{$this->table_alias}.{$primary}"; // __in if ( false !== strstr( $orderby, '__in' ) ) { $column_name = str_replace( '__in', '', $orderby ); $column = $this->get_column_by( array( 'name' => $column_name ) ); $item_in = $column->is_numeric() ? implode( ',', array_map( 'absint', $this->query_vars[ $orderby ] ) ) : implode( ',', $this->query_vars[ $orderby ] ); $parsed = "FIELD( {$this->table_alias}.{$column->name}, {$item_in} )"; // Specific column } else { // Orderby is a literal, sortable column name $sortables = $this->get_columns( array( 'sortable' => true ), 'and', 'name' ); if ( in_array( $orderby, $sortables, true ) ) { $parsed = "{$this->table_alias}.{$orderby}"; } } // Return parsed value return $parsed; } /** * Parses an 'order' query variable and cast it to 'ASC' or 'DESC' as * necessary. * * @since 1.0.0 * * @param string $order The 'order' query variable. * @return string The sanitized 'order' query variable. */ private function parse_order( $order = '' ) { // Bail if malformed if ( empty( $order ) || ! is_string( $order ) ) { return 'DESC'; } // Ascending or Descending return ( 'ASC' === strtoupper( $order ) ) ? 'ASC' : 'DESC'; } /** Private Shapers *******************************************************/ /** * Shape items into their most relevant objects. * * This will try to use item_shape, but will fallback to a private * method for querying and caching items. * * If using the `fields` parameter, results will have unique shapes based on * exactly what was requested. * * @since 1.0.0 * * @param array $items * @return array */ private function shape_items( $items = array() ) { // Force to stdClass if querying for fields if ( ! empty( $this->query_vars['fields'] ) ) { $this->item_shape = 'stdClass'; } // Default return value $retval = array(); // Use foreach because it's faster than array_map() if ( ! empty( $items ) ) { foreach ( $items as $item ) { $retval[] = $this->get_item( $item ); } } /** * Filters the object query results. * * Looks like `edd_get_customers` * * @since 1.0.0 * * @param array $retval An array of items. * @param object &$this Current instance of Query, passed by reference. */ $retval = (array) apply_filters_ref_array( $this->apply_prefix( "the_{$this->item_name_plural}" ), array( $retval, &$this ) ); // Return filtered results return ! empty( $this->query_vars['fields'] ) ? $this->get_item_fields( $retval ) : $retval; } /** * Get specific item fields based on query_vars['fields']. * * @since 1.0.0 * * @param array $items * @return array */ private function get_item_fields( $items = array() ) { // Get the primary column name $primary = $this->get_primary_column_name(); $fields = $this->query_vars['fields']; // Strings need to be single columns if ( is_string( $fields ) ) { $field = sanitize_key( $fields ); $items = ( 'ids' === $fields ) ? wp_list_pluck( $items, $primary ) : wp_list_pluck( $items, $field, $primary ); // Arrays could be anything } elseif ( is_array( $fields ) ) { $new_items = array(); $fields = array_flip( $fields ); // Loop through items and pluck out the fields foreach ( $items as $item_id => $item ) { $new_items[ $item_id ] = (object) array_intersect_key( (array) $item, $fields ); } // Set the items and unset the new items $items = $new_items; unset( $new_items ); } // Return the item, possibly reduced return $items; } /** * Shape an item ID from an object, array, or numeric value. * * @since 1.0.0 * * @param mixed $item * @return int */ private function shape_item_id( $item = 0 ) { // Default return value $retval = 0; // Get the primary column name $primary = $this->get_primary_column_name(); // Numeric item ID if ( is_numeric( $item ) ) { $retval = $item; // Object item } elseif ( is_object( $item ) && isset( $item->{$primary} ) ) { $retval = $item->{$primary}; // Array item } elseif ( is_array( $item ) && isset( $item[ $primary ] ) ) { $retval = $item[ $primary ]; } // Return the item ID return absint( $retval ); } /** Queries ***************************************************************/ /** * Get a single database row by the primary column ID, possibly from cache. * * Accepts an integer, object, or array, and attempts to get the ID from it, * then attempts to retrieve that item fresh from the database or cache. * * @since 1.0.0 * * @param int|array|object $item_id The ID of the item * @return object|false False if empty/error, Object if successful */ public function get_item( $item_id = 0 ) { // Shape the item ID $item_id = $this->shape_item_id( $item_id ); // Bail if no item to get by if ( empty( $item_id ) ) { return false; } // Get the primary column name $primary = $this->get_primary_column_name(); // Get item by ID return $this->get_item_by( $primary, $item_id ); } /** * Get a single database row by any column and value, possibly from cache. * * Take care to only use this method on columns with unique values, * preferably with a cache group for that column. See: get_item(). * * @since 1.0.0 * * @param string $column_name Name of database column * @param int|string $column_value Value to query for * @return object|false False if empty/error, Object if successful */ public function get_item_by( $column_name = '', $column_value = '' ) { // Default return value $retval = false; // Bail if no key or value if ( empty( $column_name ) || empty( $column_value ) ) { return $retval; } // Bail if name is not a string if ( ! is_string( $column_name ) ) { return $retval; } // Bail if value is not scalar (null values also not allowed) if ( ! is_scalar( $column_value ) ) { return $retval; } // Get the column names $columns = $this->get_column_names(); // Bail if column does not exist if ( ! isset( $columns[ $column_name ] ) ) { return $retval; } // Cache groups $groups = $this->get_cache_groups(); // Check cache if ( ! empty( $groups[ $column_name ] ) ) { $retval = $this->cache_get( $column_value, $groups[ $column_name ] ); } // Item not cached if ( false === $retval ) { // Try to get item directly from DB $retval = $this->get_item_raw( $column_name, $column_value ); // Bail on failure if ( ! $this->is_success( $retval ) ) { return false; } // Cache $this->update_item_cache( $retval ); } // Reduce the item $retval = $this->reduce_item( 'select', $retval ); // Return result return $this->shape_item( $retval ); } /** * Add an item to the database. * * @since 1.0.0 * * @param array $data * @return bool */ public function add_item( $data = array() ) { // Get the primary column name $primary = $this->get_primary_column_name(); // If data includes primary column, check if item already exists if ( ! empty( $data[ $primary ] ) ) { // Shape the primary item ID $item_id = $this->shape_item_id( $data[ $primary ] ); // Get item by ID (from database, not cache) $item = $this->get_item_raw( $primary, $item_id ); // Bail if item already exists if ( ! empty( $item ) ) { return false; } // Set data primary ID to newly shaped ID $data[ $primary ] = $item_id; } // Get default values for item (from columns) $item = $this->default_item(); // Unset the primary key if not part of data array (auto-incremented) if ( empty( $data[ $primary ] ) ) { unset( $item[ $primary ] ); } // Cut out non-keys for meta $columns = $this->get_column_names(); $data = array_merge( $item, $data ); $meta = array_diff_key( $data, $columns ); $save = array_intersect_key( $data, $columns ); // Get the current time (maybe used by created/modified) $time = $this->get_current_time(); // If date-created exists, but is empty or default, use the current time $created = $this->get_column_by( array( 'created' => true ) ); if ( ! empty( $created ) && ( empty( $save[ $created->name ] ) || ( $save[ $created->name ] === $created->default ) ) ) { $save[ $created->name ] = $time; } // If date-modified exists, but is empty or default, use the current time $modified = $this->get_column_by( array( 'modified' => true ) ); if ( ! empty( $modified ) && ( empty( $save[ $modified->name ] ) || ( $save[ $modified->name ] === $modified->default ) ) ) { $save[ $modified->name ] = $time; } // Try to add $table = $this->get_table_name(); $reduce = $this->reduce_item( 'insert', $save ); $save = $this->validate_item( $reduce ); $result = ! empty( $save ) ? $this->get_db()->insert( $table, $save ) : false; // Bail on failure if ( ! $this->is_success( $result ) ) { return false; } // Get the new item ID $item_id = $this->get_db()->insert_id; // Maybe save meta keys if ( ! empty( $meta ) ) { $this->save_extra_item_meta( $item_id, $meta ); } // Use get item to prime caches $this->update_item_cache( $item_id ); // Transition item data $this->transition_item( $save, $item_id ); // Return result return $item_id; } /** * Copy an item in the database to a new item. * * @since 1.1.0 * * @param int $item_id * @param array $data * @return bool */ public function copy_item( $item_id = 0, $data = array() ) { // Get the primary column name $primary = $this->get_primary_column_name(); // Get item by ID (from database, not cache) $item = $this->get_item_raw( $primary, $item_id ); // Bail if item does not exist if ( empty( $item ) ) { return false; } // Cast object to array $save = (array) $item; // Maybe merge data with original item if ( ! empty( $data ) && is_array( $data ) ) { $save = array_merge( $save, $data ); } // Unset the primary key unset( $save[ $primary ] ); // Return result return $this->add_item( $save ); } /** * Update an item in the database. * * @since 1.0.0 * * @param int $item_id * @param array $data * @return bool */ public function update_item( $item_id = 0, $data = array() ) { // Bail if no item ID $item_id = $this->shape_item_id( $item_id ); if ( empty( $item_id ) ) { return false; } // Get the primary column name $primary = $this->get_primary_column_name(); // Get item to update (from database, not cache) $item = $this->get_item_raw( $primary, $item_id ); // Bail if item does not exist to update if ( empty( $item ) ) { return false; } // Cast as an array for easier manipulation $item = (array) $item; // Unset the primary key from data to parse unset( $data[ $primary ] ); // Splice new data into item, and cut out non-keys for meta $columns = $this->get_column_names(); $data = array_merge( $item, $data ); $meta = array_diff_key( $data, $columns ); $save = array_intersect_key( $data, $columns ); // Maybe save meta keys if ( ! empty( $meta ) ) { $this->save_extra_item_meta( $item_id, $meta ); } // Bail if no change if ( (array) $save === (array) $item ) { return true; } // Unset the primary key from data to save unset( $save[ $primary ] ); // If date-modified is empty, use the current time $modified = $this->get_column_by( array( 'modified' => true ) ); if ( ! empty( $modified ) ) { $save[ $modified->name ] = $this->get_current_time(); } // Try to update $table = $this->get_table_name(); $reduce = $this->reduce_item( 'update', $save ); $save = $this->validate_item( $reduce ); $where = array( $primary => $item_id ); $result = ! empty( $save ) ? $this->get_db()->update( $table, $save, $where ) : false; // Bail on failure if ( ! $this->is_success( $result ) ) { return false; } // Use get item to prime caches $this->update_item_cache( $item_id ); // Transition item data $this->transition_item( $save, $item ); // Return result return $result; } /** * Delete an item from the database. * * @since 1.0.0 * * @param int $item_id * @return bool */ public function delete_item( $item_id = 0 ) { // Bail if no item ID $item_id = $this->shape_item_id( $item_id ); if ( empty( $item_id ) ) { return false; } // Get the primary column name $primary = $this->get_primary_column_name(); // Get item (before it's deleted) $item = $this->get_item_raw( $primary, $item_id ); // Bail if item does not exist to delete if ( empty( $item ) ) { return false; } // Attempt to reduce this item $item = $this->reduce_item( 'delete', $item ); // Bail if item was reduced to nothing if ( empty( $item ) ) { return false; } // Try to delete $table = $this->get_table_name(); $where = array( $primary => $item_id ); $result = $this->get_db()->delete( $table, $where ); // Bail on failure if ( ! $this->is_success( $result ) ) { return false; } // Clean caches on successful delete $this->delete_all_item_meta( $item_id ); $this->clean_item_cache( $item ); // Return result return $result; } /** * Filter an item before it is inserted of updated in the database. * * This method is public to allow subclasses to perform JIT manipulation * of the parameters passed into it. * * @since 1.0.0 * * @param array $item * @return array */ public function filter_item( $item = array() ) { return (array) apply_filters_ref_array( $this->apply_prefix( "filter_{$this->item_name}_item" ), array( $item, &$this ) ); } /** * Shape an item from the database into the type of object it always wanted * to be when it grew up. * * @since 1.0.0 * * @param mixed ID of item, or row from database * @return mixed False on error, Object of single-object class type on success */ private function shape_item( $item = 0 ) { // Get the item from an ID if ( is_numeric( $item ) ) { $item = $this->get_item( $item ); } // Return the item if it's already shaped if ( $item instanceof $this->item_shape ) { return $item; } // Shape the item as needed $item = ! empty( $this->item_shape ) ? new $this->item_shape( $item ) : (object) $item; // Return the item object return $item; } /** * Validate an item before it is updated in or added to the database. * * @since 1.0.0 * * @param array $item * @return array|false False on error, Array of validated values on success */ private function validate_item( $item = array() ) { // Bail if item is empty or not an array if ( empty( $item ) || ! is_array( $item ) ) { return $item; } // Loop through item attributes foreach ( $item as $key => $value ) { // Strip slashes from all strings /*if ( is_string( $value ) ) { $value = stripslashes( $value );// We removed this line at PR #3847 to solve if the content has backslash. }*/ // Get the column $column = $this->get_column_by( array( 'name' => $key ) ); // Null value is special for all item keys if ( is_null( $value ) ) { // Bail if null is not allowed if ( false === $column->allow_null ) { return false; } // Attempt to validate } elseif ( ! empty( $column->validate ) && is_callable( $column->validate ) ) { $validated = call_user_func( $column->validate, $value ); // Bail if error if ( is_wp_error( $validated ) ) { return false; } // Update the value $item[ $key ] = $validated; /** * Fallback to using the raw value. * * Note: This may change at a later date, so do not rely on this. * Please always validate all data. */ } else { $item[ $key ] = $value; } } // Return the validated item return $this->filter_item( $item ); } /** * Reduce an item down to the keys and values the current user has the * appropriate capabilities to select|insert|update|delete. * * Note that internally, this method works with both arrays and objects of * any type, and also resets the key values. It looks weird, but is * currently by design to protect the integrity of the return value. * * @since 1.0.0 * * @param string $method select|insert|update|delete * @param mixed $item Object|Array of keys/values to reduce * * @return mixed Object|Array without keys the current user does not have caps for */ private function reduce_item( $method = 'update', $item = array() ) { // Bail if item is empty if ( empty( $item ) ) { return $item; } // Loop through item attributes foreach ( $item as $key => $value ) { // Get capabilities for this column $caps = $this->get_column_field( array( 'name' => $key ), 'caps' ); // Unset if not explicitly allowed if ( empty( $caps[ $method ] ) || ! current_user_can( $caps[ $method ] ) ) { if ( is_array( $item ) ) { unset( $item[ $key ] ); } elseif ( is_object( $item ) ) { $item->{$key} = null; } // Set if explicitly allowed } elseif ( is_array( $item ) ) { $item[ $key ] = $value; } elseif ( is_object( $item ) ) { $item->{$key} = $value; } } // Return the reduced item return $item; } /** * Return an item comprised of all default values. * * This is used by `add_item()` to populate known default values, to ensure * new item data is always what we expect it to be. * * @since 1.0.0 * * @return array */ private function default_item() { // Default return value $retval = array(); // Get the column names and their defaults $names = $this->get_columns( array(), 'and', 'name' ); $defaults = $this->get_columns( array(), 'and', 'default' ); // Put together an item using default values foreach ( $names as $key => $name ) { $retval[ $name ] = $defaults[ $key ]; } // Return return $retval; } /** * Transition an item when adding or updating. * * This method takes the data being saved, looks for any columns that are * known to transition between values, and fires actions on them. * * @since 1.0.0 * * @param array $item * @return array */ private function transition_item( $new_data = array(), $old_data = array() ) { // Look for transition columns $columns = $this->get_columns( array( 'transition' => true ), 'and', 'name' ); // Bail if no columns to transition if ( empty( $columns ) ) { return; } // Get the item ID $item_id = $this->shape_item_id( $old_data ); // Bail if item ID cannot be retrieved if ( empty( $item_id ) ) { return; } // If no old value(s), it's new if ( ! is_array( $old_data ) ) { $old_data = $new_data; // Set all old values to "new" foreach ( $old_data as $key => $value ) { $value = 'new'; $old_data[ $key ] = $value; } } // Compare $keys = array_flip( $columns ); $new = array_intersect_key( $new_data, $keys ); $old = array_intersect_key( $old_data, $keys ); // Get the difference $diff = array_diff( $new, $old ); // Bail if nothing is changing if ( empty( $diff ) ) { return; } // Do the actions foreach ( $diff as $key => $value ) { $old_value = $old_data[ $key ]; $new_value = $new_data[ $key ]; $key_action = $this->apply_prefix( "transition_{$this->item_name}_{$key}" ); /** * Fires after an object value has transitioned. * * @since 1.0.0 * * @param mixed $old_value The value being transitioned FROM. * @param mixed $new_value The value being transitioned TO. * @param int $item_id The ID of the item that is transitioning. */ do_action( $key_action, $old_value, $new_value, $item_id ); } } /** Meta ******************************************************************/ /** * Add meta data to an item. * * @since 1.0.0 * * @param int $item_id * @param string $meta_key * @param string $meta_value * @param string $unique * @return int|false The meta ID on success, false on failure. */ protected function add_item_meta( $item_id = 0, $meta_key = '', $meta_value = '', $unique = false ) { // Bail if no meta was returned $item_id = $this->shape_item_id( $item_id ); if ( empty( $item_id ) || empty( $meta_key ) ) { return false; } // Bail if no meta table exists if ( false === $this->get_meta_table_name() ) { return false; } // Get the meta type $meta_type = $this->get_meta_type(); // Return results of adding meta data return add_metadata( $meta_type, $item_id, $meta_key, $meta_value, $unique ); } /** * Get meta data for an item. * * @since 1.0.0 * * @param int $item_id * @param string $meta_key * @param bool $single * @return mixed Single metadata value, or array of values */ protected function get_item_meta( $item_id = 0, $meta_key = '', $single = false ) { // Bail if no meta was returned $item_id = $this->shape_item_id( $item_id ); if ( empty( $item_id ) || empty( $meta_key ) ) { return false; } // Bail if no meta table exists if ( false === $this->get_meta_table_name() ) { return false; } // Get the meta type $meta_type = $this->get_meta_type(); // Return results of getting meta data return get_metadata( $meta_type, $item_id, $meta_key, $single ); } /** * Update meta data for an item. * * @since 1.0.0 * * @param int $item_id * @param string $meta_key * @param string $meta_value * @param string $prev_value * @return bool True on successful update, false on failure. */ protected function update_item_meta( $item_id = 0, $meta_key = '', $meta_value = '', $prev_value = '' ) { // Bail if no meta was returned $item_id = $this->shape_item_id( $item_id ); if ( empty( $item_id ) || empty( $meta_key ) ) { return false; } // Bail if no meta table exists if ( false === $this->get_meta_table_name() ) { return false; } // Get the meta type $meta_type = $this->get_meta_type(); // Return results of updating meta data return update_metadata( $meta_type, $item_id, $meta_key, $meta_value, $prev_value ); } /** * Delete meta data for an item. * * @since 1.0.0 * * @param int $item_id * @param string $meta_key * @param string $meta_value * @param string $delete_all * @return bool True on successful delete, false on failure. */ protected function delete_item_meta( $item_id = 0, $meta_key = '', $meta_value = '', $delete_all = false ) { // Bail if no meta was returned $item_id = $this->shape_item_id( $item_id ); if ( empty( $item_id ) || empty( $meta_key ) ) { return false; } // Bail if no meta table exists if ( false === $this->get_meta_table_name() ) { return false; } // Get the meta type $meta_type = $this->get_meta_type(); // Return results of deleting meta data return delete_metadata( $meta_type, $item_id, $meta_key, $meta_value, $delete_all ); } /** * Get registered meta data keys. * * @since 1.0.0 * * @param string $object_subtype The sub-type of meta keys * * @return array */ private function get_registered_meta_keys( $object_subtype = '' ) { // Get the object type $object_type = $this->get_meta_type(); // Return the keys return get_registered_meta_keys( $object_type, $object_subtype ); } /** * Maybe update meta values on item update/save. * * @since 1.0.0 * * @param array $meta */ private function save_extra_item_meta( $item_id = 0, $meta = array() ) { // Bail if there is no bulk meta to save $item_id = $this->shape_item_id( $item_id ); if ( empty( $item_id ) || empty( $meta ) ) { return; } // Bail if no meta table exists if ( false === $this->get_meta_table_name() ) { return; } // Only save registered keys $keys = $this->get_registered_meta_keys(); $meta = array_intersect_key( $meta, $keys ); // Bail if no registered meta keys if ( empty( $meta ) ) { return; } // Save or delete meta data foreach ( $meta as $key => $value ) { ! empty( $value ) ? $this->update_item_meta( $item_id, $key, $value ) : $this->delete_item_meta( $item_id, $key ); } } /** * Delete all meta data for an item. * * @since 1.0.0 * * @param int $item_id */ private function delete_all_item_meta( $item_id = 0 ) { // Bail if no meta was returned $item_id = $this->shape_item_id( $item_id ); if ( empty( $item_id ) ) { return; } // Get the meta table name $table = $this->get_meta_table_name(); // Bail if no meta table exists if ( empty( $table ) ) { return; } // Guess the item ID column for the meta table $primary_id = $this->get_primary_column_name(); $item_id_column = $this->apply_prefix( "{$this->item_name}_{$primary_id}" ); // Get meta IDs $query = "SELECT meta_id FROM {$table} WHERE {$item_id_column} = %d"; $prepared = $this->get_db()->prepare( $query, $item_id ); $meta_ids = $this->get_db()->get_col( $prepared ); // Bail if no meta IDs to delete if ( empty( $meta_ids ) ) { return; } // Get the meta type $meta_type = $this->get_meta_type(); // Delete all meta data for this item ID foreach ( $meta_ids as $mid ) { delete_metadata_by_mid( $meta_type, $mid ); } } /** * Get the meta table for this query. * * Forked from WordPress\_get_meta_table() so it can be more accurately * predicted in a future iteration and default to returning false. * * @since 1.0.0 * * @return mixed Table name if exists, False if not */ private function get_meta_table_name() { // Get the meta-type $type = $this->get_meta_type(); // Append "meta" to end of meta-type $table_name = "{$type}meta"; // Variable'ize the database interface, to use inside empty() $db = $this->get_db(); // If not empty, return table name if ( ! empty( $db->{$table_name} ) ) { return $table_name; } // Default return false return false; } /** * Get the meta type for this query. * * This method exists to reduce some duplication for now. Future iterations * will likely use Column::relationships to * * @since 1.1.0 * * @return string */ private function get_meta_type() { return $this->apply_prefix( $this->item_name ); } /** Cache *****************************************************************/ /** * Get cache key from query_vars and query_var_defaults. * * @since 1.0.0 * * @return string */ private function get_cache_key( $group = '' ) { // Slice query vars $slice = wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) ); // Unset `fields` so it does not effect the cache key unset( $slice['fields'] ); // Setup key & last_changed $key = md5( serialize( $slice ) ); $last_changed = $this->get_last_changed_cache( $group ); // Concatenate and return cache key return "get_{$this->item_name_plural}:{$key}:{$last_changed}"; } /** * Get the cache group, or fallback to the primary one. * * @since 1.0.0 * * @param string $group * @return string */ private function get_cache_group( $group = '' ) { // Get the primary column $primary = $this->get_primary_column_name(); // Default return value $retval = $this->cache_group; // Only allow non-primary groups if ( ! empty( $group ) && ( $group !== $primary ) ) { $retval = $group; } // Return the group return $retval; } /** * Get array of which database columns have uniquely cached groups. * * @since 1.0.0 * * @return array */ private function get_cache_groups() { // Return value $cache_groups = array(); // Get the cache groups $groups = $this->get_columns( array( 'cache_key' => true ), 'and', 'name' ); if ( ! empty( $groups ) ) { // Get the primary column name $primary = $this->get_primary_column_name(); // Setup return values foreach ( $groups as $name ) { if ( $primary !== $name ) { $cache_groups[ $name ] = "{$this->cache_group}-by-{$name}"; } else { $cache_groups[ $name ] = $this->cache_group; } } } // Return cache groups array return $cache_groups; } /** * Maybe prime item & item-meta caches by querying 1 time for all un-cached * items. * * Accepts a single ID, or an array of IDs. * * The reason this accepts only IDs is because it gets called immediately * after an item is inserted in the database, but before items have been * "shaped" into proper objects, so object properties may not be set yet. * * @since 1.0.0 * * @param array $item_ids * @param bool $force * * @return bool False if empty */ private function prime_item_caches( $item_ids = array(), $force = false ) { // Bail if no items to cache if ( empty( $item_ids ) ) { return false; } // Accepts single values, so cast to array $item_ids = (array) $item_ids; // Update item caches if ( ! empty( $force ) || ! empty( $this->query_vars['update_item_cache'] ) ) { // Look for non-cached IDs $ids = $this->get_non_cached_ids( $item_ids, $this->cache_group ); // Bail if IDs are cached if ( empty( $ids ) ) { return false; } // Get query parts $table = $this->get_table_name(); $primary = $this->get_primary_column_name(); // Query database $query = "SELECT * FROM {$table} WHERE {$primary} IN (%s)"; $ids = implode( ',', array_map( 'absint', $ids ) ); $prepare = sprintf( $query, $ids ); $results = $this->get_db()->get_results( $prepare ); // Update item caches $this->update_item_cache( $results ); } // Update meta data caches if ( ! empty( $this->query_vars['update_meta_cache'] ) ) { $singular = rtrim( $this->table_name, 's' ); // sic update_meta_cache( $singular, $item_ids ); } } /** * Update the cache for an item. Does not update item-meta cache. * * Accepts a single object, or an array of objects. * * The reason this does not accept ID's is because this gets called * after an item is already updated in the database, so we want to avoid * querying for it again. It's just safer this way. * * @since 1.0.0 * * @param array $items */ private function update_item_cache( $items = array() ) { // Maybe query for single item if ( is_numeric( $items ) ) { $primary = $this->get_primary_column_name(); $items = $this->get_item_raw( $primary, $items ); } // Bail if no items to cache if ( empty( $items ) ) { return false; } // Make sure items are an array (without casting objects to arrays) if ( ! is_array( $items ) ) { $items = array( $items ); } // Get the cache groups $groups = $this->get_cache_groups(); // Loop through all items and cache them foreach ( $items as $item ) { // Skip if item is not an object if ( ! is_object( $item ) ) { continue; } // Loop through groups and set cache if ( ! empty( $groups ) ) { foreach ( $groups as $key => $group ) { $this->cache_set( $item->{$key}, $item, $group ); } } } // Update last changed $this->update_last_changed_cache(); } /** * Clean the cache for an item. Does not clean item-meta. * * Accepts a single object, or an array of objects. * * The reason this does not accept ID's is because this gets called * after an item is already deleted from the database, so it cannot be * queried and may not exist in the cache. It's just safer this way. * * @since 1.0.0 * * @param mixed $items Single object item, or Array of object items * * @return bool */ private function clean_item_cache( $items = array() ) { // Bail if no items to clean if ( empty( $items ) ) { return false; } // Make sure items are an array if ( ! is_array( $items ) ) { $items = array( $items ); } // Get the cache groups $groups = $this->get_cache_groups(); // Loop through all items and clean them foreach ( $items as $item ) { // Skip if item is not an object if ( ! is_object( $item ) ) { continue; } // Loop through groups and delete cache if ( ! empty( $groups ) ) { foreach ( $groups as $key => $group ) { $this->cache_delete( $item->{$key}, $group ); } } } // Update last changed $this->update_last_changed_cache(); } /** * Update the last_changed key for the cache group. * * @since 1.0.0 * * @return string The last time a cache group was changed. */ private function update_last_changed_cache( $group = '' ) { // Fallback to microtime if ( empty( $this->last_changed ) ) { $this->set_last_changed(); } // Set the last changed time for this cache group $this->cache_set( 'last_changed', $this->last_changed, $group ); // Return the last changed time return $this->last_changed; } /** * Get the last_changed key for a cache group. * * @since 1.0.0 * * @param string $group Cache group. Defaults to $this->cache_group * * @return string The last time a cache group was changed. */ private function get_last_changed_cache( $group = '' ) { // Get the last changed cache value $last_changed = $this->cache_get( 'last_changed', $group ); // Maybe update the last changed value if ( false === $last_changed ) { $last_changed = $this->update_last_changed_cache( $group ); } // Return the last changed value for the cache group return $last_changed; } /** * Get array of non-cached item IDs. * * @since 1.0.0 * * @param array $item_ids Array of item IDs * @param string $group Cache group. Defaults to $this->cache_group * * @return array */ private function get_non_cached_ids( $item_ids = array(), $group = '' ) { $retval = array(); // Bail if no item IDs if ( empty( $item_ids ) ) { return $retval; } // Loop through item IDs foreach ( $item_ids as $id ) { $id = $this->shape_item_id( $id ); if ( false === $this->cache_get( $id, $group ) ) { $retval[] = $id; } } // Return array of IDs return $retval; } /** * Add a cache value for a key and group. * * @since 1.0.0 * * @param string $key Cache key. * @param mixed $value Cache value. * @param string $group Cache group. Defaults to $this->cache_group * @param int $expire Expiration. */ private function cache_add( $key = '', $value = '', $group = '', $expire = 0 ) { // Bail if cache invalidation is suspended if ( wp_suspend_cache_addition() ) { return; } // Bail if no cache key if ( empty( $key ) ) { return; } // Get the cache group $group = $this->get_cache_group( $group ); // Add to the cache wp_cache_add( $key, $value, $group, $expire ); } /** * Get a cache value for a key and group. * * @since 1.0.0 * * @param string $key Cache key. * @param string $group Cache group. Defaults to $this->cache_group * @param bool $force */ private function cache_get( $key = '', $group = '', $force = false ) { // Bail if no cache key if ( empty( $key ) ) { return; } // Get the cache group $group = $this->get_cache_group( $group ); // Return from the cache return wp_cache_get( $key, $group, $force ); } /** * Set a cache value for a key and group. * * @since 1.0.0 * * @param string $key Cache key. * @param mixed $value Cache value. * @param string $group Cache group. Defaults to $this->cache_group * @param int $expire Expiration. */ private function cache_set( $key = '', $value = '', $group = '', $expire = 0 ) { // Bail if cache invalidation is suspended if ( wp_suspend_cache_addition() ) { return; } // Bail if no cache key if ( empty( $key ) ) { return; } // Get the cache group $group = $this->get_cache_group( $group ); // Update the cache wp_cache_set( $key, $value, $group, $expire ); } /** * Delete a cache key for a group. * * @since 1.0.0 * * @global bool $_wp_suspend_cache_invalidation * * @param string $key Cache key. * @param string $group Cache group. Defaults to $this->cache_group */ private function cache_delete( $key = '', $group = '' ) { global $_wp_suspend_cache_invalidation; // Bail if cache invalidation is suspended if ( ! empty( $_wp_suspend_cache_invalidation ) ) { return; } // Bail if no cache key if ( empty( $key ) ) { return; } // Get the cache group $group = $this->get_cache_group( $group ); // Delete the cache wp_cache_delete( $key, $group ); } /** * Fetch raw results directly from the database. * * @since 1.0.0 * * @param array $cols Columns for `SELECT`. * @param array $where_cols Where clauses. Each key-value pair in the array * represents a column and a comparison. * @param int $limit Optional. LIMIT value. Default 25. * @param null $offset Optional. OFFSET value. Default null. * @param string $output Optional. Any of ARRAY_A | ARRAY_N | OBJECT | OBJECT_K constants. * Default OBJECT. * With one of the first three, return an array of * rows indexed from 0 by SQL result row number. * Each row is an associative array (column => value, ...), * a numerically indexed array (0 => value, ...), * or an object. ( ->column = value ), respectively. * With OBJECT_K, return an associative array of * row objects keyed by the value of each row's * first column's value. * * @return array|object|null Database query results. */ public function get_results( $cols = array(), $where_cols = array(), $limit = 25, $offset = null, $output = OBJECT ) { // Bail if no columns have been passed if ( empty( $cols ) ) { return null; } // Fetch all the columns for the table being queried $column_names = $this->get_column_names(); // Ensure valid column names have been passed for the `SELECT` clause foreach ( $cols as $index => $column ) { if ( ! array_key_exists( $column, $column_names ) ) { unset( $cols[ $index ] ); } } // Columns to retrieve $columns = implode( ',', $cols ); // Get the table name $table = $this->get_table_name(); // Setup base query $query = implode( ' ', array( "SELECT", $columns, "FROM {$table} {$this->table_alias}", "WHERE 1=1" ) ); // Ensure valid columns have been passed for the `WHERE` clause if ( ! empty( $where_cols ) ) { // Get keys from where columns $columns = array_keys( $where_cols ); // Loop through columns and unset any invalid names foreach ( $columns as $index => $column ) { if ( ! array_key_exists( $column, $column_names ) ) { unset( $where_cols[ $index ] ); } } // Parse WHERE clauses foreach ( $where_cols as $column => $compare ) { // Basic WHERE clause if ( ! is_array( $compare ) ) { $pattern = $this->get_column_field( array( 'name' => $column ), 'pattern', '%s' ); $statement = " AND {$this->table_alias}.{$column} = {$pattern} "; $query .= $this->get_db()->prepare( $statement, $compare ); // More complex WHERE clause } else { $value = isset( $compare['value'] ) ? $compare['value'] : false; // Skip if a value was not provided if ( false === $value ) { continue; } // Default compare clause to equals $compare_clause = isset( $compare['compare_query'] ) ? trim( strtoupper( $compare['compare_query'] ) ) : '='; // Array (unprepared) if ( is_array( $compare['value'] ) ) { // Default to IN if clause not specified if ( ! in_array( $compare_clause, array( 'IN', 'NOT IN', 'BETWEEN' ), true ) ) { $compare_clause = 'IN'; } // Parse & escape for IN and NOT IN if ( 'IN' === $compare_clause || 'NOT IN' === $compare_clause ) { $value = "('" . implode( "','", $this->get_db()->_escape( $compare['value'] ) ) . "')"; // Parse & escape for BETWEEN } elseif ( is_array( $value ) && 2 === count( $value ) && 'BETWEEN' === $compare_clause ) { $_this = $this->get_db()->_escape( $value[0] ); $_that = $this->get_db()->_escape( $value[1] ); $value = " {$_this} AND {$_that} "; } } // Add WHERE clause $query .= " AND {$this->table_alias}.{$column} {$compare_clause} {$value} "; } } } // Maybe set an offset if ( ! empty( $offset ) ) { $values = explode( ',', $offset ); $values = array_filter( $values, 'intval' ); $offset = implode( ',', $values ); $query .= " OFFSET {$offset} "; } // Maybe set a limit if ( ! empty( $limit ) && ( $limit > 0 ) ) { $limit = intval( $limit ); $query .= " LIMIT {$limit} "; } // Execute query $results = $this->get_db()->get_results( $query, $output ); // Return results return $results; } }