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<?php |
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namespace suda\database\struct; |
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use suda\database\exception\SQLException; |
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use suda\database\TableAccess; |
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class ReadStatement extends \suda\database\statement\ReadStatement |
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{ |
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/** |
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* 访问操作 |
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* |
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* @var TableAccess |
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*/ |
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protected $access; |
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public function __construct(TableAccess $access) |
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{ |
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$this->access = $access; |
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parent::__construct( |
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$access->getStruct()->getRealTableName($access->getSource()->write()), |
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$access->getStruct(), |
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$access->getMiddleware() |
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); |
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} |
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/** |
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* 取1 |
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* |
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* @param string|null $class |
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* @param array $args |
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* @return mixed |
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* @throws SQLException |
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*/ |
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public function one(?string $class = null, array $args = []) |
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{ |
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if ($this->isScroll() === false && $this->hasLimit() === false) { |
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$this->limit(0, 1); |
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} |
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return $this->access->run($this->wantOne($class, $args)); |
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} |
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/** |
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* 取一列 |
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* @param string $name |
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* @param mixed $default |
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* @return mixed |
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* @throws SQLException |
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*/ |
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public function field(string $name, $default = null) |
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{ |
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$row = $this->one(); |
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return $row[$name] ?? $default; |
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} |
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/** |
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* 取数组的一列 |
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* @param string $name |
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* @return array |
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* @throws SQLException |
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*/ |
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public function allField(string $name) |
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{ |
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$row = $this->all(); |
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return array_column($row, $name); |
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} |
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/** |
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* @return bool |
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*/ |
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private function hasLimit() |
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{ |
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return strlen($this->limit) > 0; |
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} |
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/** |
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* 取全部 |
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* |
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* @param string|null $class |
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* @param array $args |
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* @return array |
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* @throws SQLException |
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*/ |
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public function all(?string $class = null, array $args = []): array |
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{ |
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return $this->access->run($this->wantAll($class, $args)); |
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} |
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/** |
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* 取1 |
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* |
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* @param string|null $class |
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* @param array $args |
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* @return mixed |
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* @throws SQLException |
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*/ |
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public function fetch(?string $class = null, array $args = []) |
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{ |
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return $this->one($class, $args); |
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} |
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/** |
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* 取全部 |
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* |
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* @param string|null $class |
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* @param array $args |
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* @return array |
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* @throws SQLException |
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*/ |
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public function fetchAll(?string $class = null, array $args = []): array |
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{ |
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return $this->all($class, $args); |
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} |
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/** |
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* 统计 |
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* |
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* @return int |
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* @throws SQLException |
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*/ |
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public function count() { |
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$query = clone $this; |
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$query->orderBy = ''; |
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$query->limit = ''; |
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$fields = $this->struct->all(); |
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if (count($fields) > 0) { |
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$field = \array_shift($fields); |
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$query->read([$field->getName()]); |
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} |
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$totalQuery = new QueryStatement($this->getAccess(), sprintf("SELECT count(*) as count from (%s) as total", $query->getString()), |
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$this->getBinder()); |
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$totalQuery->wantType(null); |
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$data = $totalQuery->one(); |
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return intval($data['count']); |
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} |
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/** |
|
139
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|
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* Get 访问操作 |
|
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* |
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141
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* @return TableAccess |
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142
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|
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*/ |
|
143
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|
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public function getAccess(): TableAccess |
|
144
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|
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{ |
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145
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|
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return $this->access; |
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146
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} |
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147
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} |
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dxkite /
suda
