silverstripe-framework/src/ORM/Queries/SQLDelete.php
2016-11-29 12:31:16 +13:00

93 lines
2.7 KiB
PHP

<?php
namespace SilverStripe\ORM\Queries;
use SilverStripe\Core\Injector\Injector;
/**
* Object representing a SQL DELETE query.
* The various parts of the SQL query can be manipulated individually.
*/
class SQLDelete extends SQLConditionalExpression
{
/**
* List of tables to limit the delete to, if multiple tables
* are specified in the condition clause
*
* @see http://dev.mysql.com/doc/refman/5.0/en/delete.html
*
* @var array
*/
protected $delete = array();
/**
* Construct a new SQLDelete.
*
* @param array|string $from An array of Tables (FROM clauses). The first one should be just the table name.
* Each should be ANSI quoted.
* @param array $where An array of WHERE clauses.
* @param array|string $delete The table(s) to delete, if multiple tables are queried from
* @return static
*/
public static function create($from = array(), $where = array(), $delete = array())
{
return Injector::inst()->createWithArgs(__CLASS__, func_get_args());
}
/**
* Construct a new SQLDelete.
*
* @param array|string $from An array of Tables (FROM clauses). The first one should be just the table name.
* Each should be ANSI quoted.
* @param array $where An array of WHERE clauses.
* @param array|string $delete The table(s) to delete, if multiple tables are queried from
*/
function __construct($from = array(), $where = array(), $delete = array())
{
parent::__construct($from, $where);
$this->setDelete($delete);
}
/**
* List of tables to limit the delete to, if multiple tables
* are specified in the condition clause
*
* @return array
*/
public function getDelete()
{
return $this->delete;
}
/**
* Sets the list of tables to limit the delete to, if multiple tables
* are specified in the condition clause
*
* @param string|array $tables Escaped SQL statement, usually an unquoted table name
* @return $this Self reference
*/
public function setDelete($tables)
{
$this->delete = array();
return $this->addDelete($tables);
}
/**
* Sets the list of tables to limit the delete to, if multiple tables
* are specified in the condition clause
*
* @param string|array $tables Escaped SQL statement, usually an unquoted table name
* @return $this Self reference
*/
public function addDelete($tables)
{
if (is_array($tables)) {
$this->delete = array_merge($this->delete, $tables);
} elseif (!empty($tables)) {
$this->delete[str_replace(array('"','`'), '', $tables)] = $tables;
}
return $this;
}
}