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<?php
namespace Laminas\Db\Sql;
use Closure;
use Laminas\Db\Adapter\Driver\DriverInterface;
use Laminas\Db\Adapter\ParameterContainer;
use Laminas\Db\Adapter\Platform\PlatformInterface;
use Laminas\Db\Sql\Predicate\PredicateInterface;
use function array_key_exists;
use function sprintf;
use function strtolower;
/**
* @property Where $where
*/
class Delete extends AbstractPreparableSql
{
/**@#+
* @const
*/
public const SPECIFICATION_DELETE = 'delete';
public const SPECIFICATION_WHERE = 'where';
/**@#-*/
/**
* {@inheritDoc}
*/
protected $specifications = [
self::SPECIFICATION_DELETE => 'DELETE FROM %1$s',
self::SPECIFICATION_WHERE => 'WHERE %1$s',
];
/** @var string|TableIdentifier */
protected $table = '';
/** @var bool */
protected $emptyWhereProtection = true;
/** @var array */
protected $set = [];
/** @var null|string|Where */
protected $where;
/**
* Constructor
*
* @param null|string|TableIdentifier $table
*/
public function __construct($table = null)
{
if ($table) {
$this->from($table);
}
$this->where = new Where();
}
/**
* Create from statement
*
* @param string|TableIdentifier $table
* @return $this Provides a fluent interface
*/
public function from($table)
{
$this->table = $table;
return $this;
}
/**
* @param null $key
* @return mixed
*/
public function getRawState($key = null)
{
$rawState = [
'emptyWhereProtection' => $this->emptyWhereProtection,
'table' => $this->table,
'set' => $this->set,
'where' => $this->where,
];
return isset($key) && array_key_exists($key, $rawState) ? $rawState[$key] : $rawState;
}
/**
* Create where clause
*
* @param Where|Closure|string|array|PredicateInterface $predicate
* @param string $combination One of the OP_* constants from Predicate\PredicateSet
* @return $this Provides a fluent interface
*/
public function where($predicate, $combination = Predicate\PredicateSet::OP_AND)
{
if ($predicate instanceof Where) {
$this->where = $predicate;
} else {
$this->where->addPredicates($predicate, $combination);
}
return $this;
}
/**
* @return string
*/
protected function processDelete(
PlatformInterface $platform,
?DriverInterface $driver = null,
?ParameterContainer $parameterContainer = null
) {
return sprintf(
$this->specifications[static::SPECIFICATION_DELETE],
$this->resolveTable($this->table, $platform, $driver, $parameterContainer)
);
}
/**
* @return null|string
*/
protected function processWhere(
PlatformInterface $platform,
?DriverInterface $driver = null,
?ParameterContainer $parameterContainer = null
) {
if ($this->where->count() === 0) {
return;
}
return sprintf(
$this->specifications[static::SPECIFICATION_WHERE],
$this->processExpression($this->where, $platform, $driver, $parameterContainer, 'where')
);
}
/**
* Property overloading
*
* Overloads "where" only.
*
* @param string $name
* @return Where|null
*/
public function __get($name)
{
switch (strtolower($name)) {
case 'where':
return $this->where;
}
}
}