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class-edd-db.php
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class-edd-db.php
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<?php
// Exit if accessed directly
defined( 'ABSPATH' ) || exit;
/**
* EDD DB base class
*
* @package EDD
* @subpackage Classes/EDD DB
* @copyright Copyright (c) 2018, Easy Digital Downloads, LLC
* @license http://opensource.org/licenses/gpl-2.0.php GNU Public License
* @since 2.1
*/
abstract class EDD_DB {
/**
* The name of our database table
*
* @since 2.1
*/
public $table_name;
/**
* The version of our database table
*
* @since 2.1
*/
public $version;
/**
* The name of the primary column
*
* @since 2.1
*/
public $primary_key;
/**
* Get things started
*
* @since 2.1
*/
public function __construct() {}
/**
* Whitelist of columns
*
* @since 2.1
* @return array
*/
public function get_columns() {
return array();
}
/**
* Default column values
*
* @since 2.1
* @return array
*/
public function get_column_defaults() {
return array();
}
/**
* Retrieve a row by the primary key
*
* @since 2.1
* @return object
*/
public function get( $row_id ) {
global $wpdb;
return $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $this->table_name WHERE $this->primary_key = %s LIMIT 1;", $row_id ) );
}
/**
* Retrieve a row by a specific column / value
*
* @since 2.1
* @return object
*/
public function get_by( $column, $row_id ) {
global $wpdb;
$column = esc_sql( $column );
return $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $this->table_name WHERE $column = %s LIMIT 1;", $row_id ) );
}
/**
* Retrieve a specific column's value by the primary key
*
* @since 2.1
* @return string
*/
public function get_column( $column, $row_id ) {
global $wpdb;
$column = esc_sql( $column );
return $wpdb->get_var( $wpdb->prepare( "SELECT $column FROM $this->table_name WHERE $this->primary_key = %s LIMIT 1;", $row_id ) );
}
/**
* Retrieve a specific column's value by the the specified column / value
*
* @since 2.1
* @return string
*/
public function get_column_by( $column, $column_where, $column_value ) {
global $wpdb;
$column_where = esc_sql( $column_where );
$column = esc_sql( $column );
return $wpdb->get_var( $wpdb->prepare( "SELECT $column FROM $this->table_name WHERE $column_where = %s LIMIT 1;", $column_value ) );
}
/**
* Insert a new row
*
* @since 2.1
* @return int
*/
public function insert( $data, $type = '' ) {
global $wpdb;
// Set default values
$data = wp_parse_args( $data, $this->get_column_defaults() );
do_action( 'edd_pre_insert_' . $type, $data );
// Initialise column format array
$column_formats = $this->get_columns();
// Force fields to lower case
$data = array_change_key_case( $data );
// White list columns
$data = array_intersect_key( $data, $column_formats );
// Reorder $column_formats to match the order of columns given in $data
$data_keys = array_keys( $data );
$column_formats = array_merge( array_flip( $data_keys ), $column_formats );
$wpdb->insert( $this->table_name, $data, $column_formats );
$wpdb_insert_id = $wpdb->insert_id;
do_action( 'edd_post_insert_' . $type, $wpdb_insert_id, $data );
return $wpdb_insert_id;
}
/**
* Update a row
*
* @since 2.1
* @return bool
*/
public function update( $row_id, $data = array(), $where = '' ) {
global $wpdb;
// Row ID must be positive integer
$row_id = absint( $row_id );
if( empty( $row_id ) ) {
return false;
}
if( empty( $where ) ) {
$where = $this->primary_key;
}
// Initialise column format array
$column_formats = $this->get_columns();
// Force fields to lower case
$data = array_change_key_case( $data );
// White list columns
$data = array_intersect_key( $data, $column_formats );
// Reorder $column_formats to match the order of columns given in $data
$data_keys = array_keys( $data );
$column_formats = array_merge( array_flip( $data_keys ), $column_formats );
if ( false === $wpdb->update( $this->table_name, $data, array( $where => $row_id ), $column_formats ) ) {
return false;
}
return true;
}
/**
* Delete a row identified by the primary key
*
* @since 2.1
* @return bool
*/
public function delete( $row_id = 0 ) {
global $wpdb;
// Row ID must be positive integer
$row_id = absint( $row_id );
if( empty( $row_id ) ) {
return false;
}
if ( false === $wpdb->query( $wpdb->prepare( "DELETE FROM $this->table_name WHERE $this->primary_key = %d", $row_id ) ) ) {
return false;
}
return true;
}
/**
* Check if the given table exists
*
* @since 2.4
* @param string $table The table name
* @return bool If the table name exists
*/
public function table_exists( $table ) {
global $wpdb;
$table = sanitize_text_field( $table );
return $wpdb->get_var( $wpdb->prepare( "SHOW TABLES LIKE '%s'", $table ) ) === $table;
}
/**
* Check if the table was ever installed
*
* @since 2.4
* @return bool Returns if the customers table was installed and upgrade routine run
*/
public function installed() {
return $this->table_exists( $this->table_name );
}
}