File "OrdersTableFieldQuery.php"
Full Path: /home/jlklyejr/public_html/wp-content/test/wp-content/plugins/woocommerce/src/Internal/DataStores/Orders/OrdersTableFieldQuery.php
File size: 8.51 KB
MIME-type: text/x-php
Charset: utf-8
<?php
namespace Automattic\WooCommerce\Internal\DataStores\Orders;
defined( 'ABSPATH' ) || exit;
/**
* Provides the implementation for `field_query` in {@see OrdersTableQuery} used to build
* complex queries against order fields in the database.
*
* @internal
*/
class OrdersTableFieldQuery {
/**
* List of valid SQL operators to use as field_query 'compare' values.
*
* @var array
*/
private const VALID_COMPARISON_OPERATORS = array(
'=',
'!=',
'LIKE',
'NOT LIKE',
'IN',
'NOT IN',
'EXISTS',
'NOT EXISTS',
'RLIKE',
'REGEXP',
'NOT REGEXP',
'>',
'>=',
'<',
'<=',
'BETWEEN',
'NOT BETWEEN',
);
/**
* The original query object.
*
* @var OrdersTableQuery
*/
private $query = null;
/**
* Determines whether the field query should produce no results due to an invalid argument.
*
* @var boolean
*/
private $force_no_results = false;
/**
* Holds a sanitized version of the `field_query`.
*
* @var array
*/
private $queries = array();
/**
* JOIN clauses to add to the main SQL query.
*
* @var array
*/
private $join = array();
/**
* WHERE clauses to add to the main SQL query.
*
* @var array
*/
private $where = array();
/**
* Table aliases in use by the field query. Used to keep track of JOINs and optimize when possible.
*
* @var array
*/
private $table_aliases = array();
/**
* Constructor.
*
* @param OrdersTableQuery $q The main query being performed.
*/
public function __construct( OrdersTableQuery $q ) {
$field_query = $q->get( 'field_query' );
if ( ! $field_query || ! is_array( $field_query ) ) {
return;
}
$this->query = $q;
$this->queries = $this->sanitize_query( $field_query );
$this->where = ( ! $this->force_no_results ) ? $this->process( $this->queries ) : '1=0';
}
/**
* Sanitizes the field_query argument.
*
* @param array $q A field_query array.
* @return array A sanitized field query array.
* @throws \Exception When field table info is missing.
*/
private function sanitize_query( array $q ) {
$sanitized = array();
foreach ( $q as $key => $arg ) {
if ( 'relation' === $key ) {
$relation = $arg;
} elseif ( ! is_array( $arg ) ) {
continue;
} elseif ( $this->is_atomic( $arg ) ) {
if ( isset( $arg['value'] ) && array() === $arg['value'] ) {
continue;
}
// Sanitize 'compare'.
$arg['compare'] = strtoupper( $arg['compare'] ?? '=' );
$arg['compare'] = in_array( $arg['compare'], self::VALID_COMPARISON_OPERATORS, true ) ? $arg['compare'] : '=';
if ( '=' === $arg['compare'] && isset( $arg['value'] ) && is_array( $arg['value'] ) ) {
$arg['compare'] = 'IN';
}
// Sanitize 'cast'.
$arg['cast'] = $this->sanitize_cast_type( $arg['type'] ?? '' );
$field_info = $this->query->get_field_mapping_info( $arg['field'] );
if ( ! $field_info ) {
$this->force_no_results = true;
continue;
}
$arg = array_merge( $arg, $field_info );
$sanitized[ $key ] = $arg;
} else {
$sanitized_arg = $this->sanitize_query( $arg );
if ( $sanitized_arg ) {
$sanitized[ $key ] = $sanitized_arg;
}
}
}
if ( $sanitized ) {
$sanitized['relation'] = 1 === count( $sanitized ) ? 'OR' : $this->sanitize_relation( $relation ?? 'AND' );
}
return $sanitized;
}
/**
* Makes sure we use an AND or OR relation. Defaults to AND.
*
* @param string $relation An unsanitized relation prop.
* @return string
*/
private function sanitize_relation( string $relation ): string {
if ( ! empty( $relation ) && 'OR' === strtoupper( $relation ) ) {
return 'OR';
}
return 'AND';
}
/**
* Processes field_query entries and generates the necessary table aliases, JOIN statements and WHERE conditions.
*
* @param array $q A field query.
* @return string An SQL WHERE statement.
*/
private function process( array $q ) {
$where = '';
if ( empty( $q ) ) {
return $where;
}
if ( $this->is_atomic( $q ) ) {
$q['alias'] = $this->find_or_create_table_alias_for_clause( $q );
$where = $this->generate_where_for_clause( $q );
} else {
$relation = $q['relation'];
unset( $q['relation'] );
$chunks = array();
foreach ( $q as $query ) {
$chunks[] = $this->process( $query );
}
if ( 1 === count( $chunks ) ) {
$where = $chunks[0];
} else {
$where = '(' . implode( " {$relation} ", $chunks ) . ')';
}
}
return $where;
}
/**
* Checks whether a given field_query clause is atomic or not (i.e. not nested).
*
* @param array $q The field_query clause.
* @return boolean TRUE if atomic, FALSE otherwise.
*/
private function is_atomic( $q ) {
return isset( $q['field'] );
}
/**
* Finds a common table alias that the field_query clause can use, or creates one.
*
* @param array $q An atomic field_query clause.
* @return string A table alias for use in an SQL JOIN clause.
* @throws \Exception When table info for clause is missing.
*/
private function find_or_create_table_alias_for_clause( $q ) {
global $wpdb;
if ( ! empty( $q['alias'] ) ) {
return $q['alias'];
}
if ( empty( $q['table'] ) || empty( $q['column'] ) ) {
throw new \Exception( __( 'Missing table info for query arg.', 'woocommerce' ) );
}
$join = '';
if ( isset( $q['mapping_id'] ) ) {
// Re-use JOINs and aliases from OrdersTableQuery for core tables.
$alias = $this->query->get_core_mapping_alias( $q['mapping_id'] );
$join = $this->query->get_core_mapping_join( $q['mapping_id'] );
} else {
$alias = $q['table'];
$join = '';
}
if ( in_array( $alias, $this->table_aliases, true ) ) {
return $alias;
}
$this->table_aliases[] = $alias;
if ( $join ) {
$this->join[ $alias ] = $join;
}
return $alias;
}
/**
* Returns the correct type for a given clause 'type'.
*
* @param string $type MySQL type.
* @return string MySQL type.
*/
private function sanitize_cast_type( $type ) {
$clause_type = strtoupper( $type );
if ( ! $clause_type || ! preg_match( '/^(?:BINARY|CHAR|DATE|DATETIME|SIGNED|UNSIGNED|TIME|NUMERIC(?:\(\d+(?:,\s?\d+)?\))?|DECIMAL(?:\(\d+(?:,\s?\d+)?\))?)$/', $clause_type ) ) {
return 'CHAR';
}
if ( 'NUMERIC' === $clause_type ) {
$clause_type = 'SIGNED';
}
return $clause_type;
}
/**
* Generates an SQL WHERE clause for a given field_query atomic clause.
*
* @param array $clause An atomic field_query clause.
* @return string An SQL WHERE clause or an empty string if $clause is invalid.
*/
private function generate_where_for_clause( $clause ): string {
global $wpdb;
$clause_value = $clause['value'] ?? '';
if ( in_array( $clause['compare'], array( 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN' ), true ) ) {
if ( ! is_array( $clause_value ) ) {
$clause_value = preg_split( '/[,\s]+/', $clause_value );
}
} elseif ( is_string( $clause_value ) ) {
$clause_value = trim( $clause_value );
}
$clause_compare = $clause['compare'];
switch ( $clause_compare ) {
case 'IN':
case 'NOT IN':
$where = $wpdb->prepare( '(' . substr( str_repeat( ',%s', count( (array) $clause_value ) ), 1 ) . ')', $clause_value ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
break;
case 'BETWEEN':
case 'NOT BETWEEN':
$where = $wpdb->prepare( '%s AND %s', $clause_value[0], $clause_value[1] ?? $clause_value[0] );
break;
case 'LIKE':
case 'NOT LIKE':
$where = $wpdb->prepare( '%s', '%' . $wpdb->esc_like( $clause_value ) . '%' );
break;
case 'EXISTS':
// EXISTS with a value is interpreted as '='.
if ( $clause_value ) {
$clause_compare = '=';
$where = $wpdb->prepare( '%s', $clause_value );
} else {
$clause_compare = 'IS NOT';
$where = 'NULL';
}
break;
case 'NOT EXISTS':
// 'value' is ignored for NOT EXISTS.
$clause_compare = 'IS';
$where = 'NULL';
break;
default:
$where = $wpdb->prepare( '%s', $clause_value );
break;
}
if ( ! empty( $where ) ) {
if ( 'CHAR' === $clause['cast'] ) {
return "`{$clause['alias']}`.`{$clause['column']}` {$clause_compare} {$where}";
} else {
return "CAST(`{$clause['alias']}`.`{$clause['column']}` AS {$clause['cast']}) {$clause_compare} {$where}";
}
}
return '';
}
/**
* Returns JOIN and WHERE clauses to be appended to the main SQL query.
*
* @return array {
* @type string $join JOIN clause.
* @type string $where WHERE clause.
* }
*/
public function get_sql_clauses() {
return array(
'join' => $this->join,
'where' => $this->where ? array( $this->where ) : array(),
);
}
}