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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Db\Driver\Pdo; |
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use PDO; |
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use PDOException; |
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use PDOStatement; |
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use Throwable; |
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use Yiisoft\Db\Command\Param; |
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use Yiisoft\Db\Command\ParamInterface; |
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use Yiisoft\Db\Exception\Exception; |
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use Yiisoft\Db\Exception\InvalidParamException; |
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use Yiisoft\Db\Query\Data\DataReader; |
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/** |
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* Represents a database command that can be executed using a PDO (PHP Data Object) database connection. |
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* |
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* It's an abstract class that provides a common interface for building and executing various types of statements |
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* such as {@see cancel()}, {@see execute()}, {@see insert()}, {@see update()}, {@see delete()}, etc., using a PDO |
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* connection. |
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* |
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* It also provides methods for binding parameter values and retrieving query results. |
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*/ |
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abstract class AbstractCommand extends \Yiisoft\Db\Command\AbstractCommand implements CommandInterface |
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{ |
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/** |
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* @var PDOStatement|null Represents a prepared statement and, after the statement is executed, an associated |
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* result set. |
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* |
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* @link https://www.php.net/manual/en/class.pdostatement.php |
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*/ |
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protected PDOStatement|null $pdoStatement = null; |
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public function __construct(protected ConnectionInterface $db) |
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{ |
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} |
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/** |
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* This method mainly sets {@see pdoStatement} to be `null`. |
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*/ |
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public function cancel(): void |
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{ |
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$this->pdoStatement = null; |
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} |
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public function getPdoStatement(): PDOStatement|null |
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{ |
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return $this->pdoStatement; |
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} |
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public function bindParam( |
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int|string $name, |
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mixed &$value, |
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int|null $dataType = null, |
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int|null $length = null, |
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mixed $driverOptions = null |
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): static { |
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$this->prepare(); |
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if ($dataType === null) { |
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$dataType = $this->db->getSchema()->getPdoType($value); |
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} |
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if ($length === null) { |
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$this->pdoStatement?->bindParam($name, $value, $dataType); |
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} elseif ($driverOptions === null) { |
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$this->pdoStatement?->bindParam($name, $value, $dataType, $length); |
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} else { |
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$this->pdoStatement?->bindParam($name, $value, $dataType, $length, $driverOptions); |
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} |
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return $this; |
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} |
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public function bindValue(int|string $name, mixed $value, int|null $dataType = null): static |
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{ |
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if ($dataType === null) { |
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$dataType = $this->db->getSchema()->getPdoType($value); |
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} |
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$this->params[$name] = new Param($value, $dataType); |
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return $this; |
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} |
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public function bindValues(array $values): static |
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{ |
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if (empty($values)) { |
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return $this; |
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} |
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/** |
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* @psalm-var array<string, int>|ParamInterface|int $value |
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*/ |
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foreach ($values as $name => $value) { |
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if ($value instanceof ParamInterface) { |
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$this->params[$name] = $value; |
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} else { |
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$type = $this->db->getSchema()->getPdoType($value); |
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$this->params[$name] = new Param($value, $type); |
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} |
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} |
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return $this; |
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} |
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public function prepare(bool|null $forRead = null): void |
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{ |
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if (isset($this->pdoStatement)) { |
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$this->bindPendingParams(); |
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return; |
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} |
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$sql = $this->getSql(); |
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/** |
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* If SQL is empty, there will be {@see \ValueError} on prepare pdoStatement. |
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* |
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* @link https://php.watch/versions/8.0/ValueError |
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*/ |
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if ($sql === '') { |
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return; |
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} |
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$pdo = $this->db->getActivePDO($sql, $forRead); |
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try { |
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$this->pdoStatement = $pdo?->prepare($sql); |
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$this->bindPendingParams(); |
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} catch (PDOException $e) { |
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$message = $e->getMessage() . "\nFailed to prepare SQL: $sql"; |
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/** @psalm-var array|null $errorInfo */ |
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$errorInfo = $e->errorInfo ?? null; |
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throw new Exception($message, $errorInfo, $e); |
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} |
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} |
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/** |
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* Binds pending parameters registered via {@see bindValue()} and {@see bindValues()}. |
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* |
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* Note that this method requires an active {@see pdoStatement}. |
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*/ |
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protected function bindPendingParams(): void |
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{ |
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foreach ($this->params as $name => $value) { |
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$this->pdoStatement?->bindValue($name, $value->getValue(), $value->getType()); |
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} |
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} |
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/** |
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* Executes a prepared statement. |
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* |
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* It's a wrapper around {@see PDOStatement::execute()} to support transactions and retry handlers. |
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* |
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* @param string|null $rawSql The rawSql if it has been created. |
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* |
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* @throws Exception |
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* @throws Throwable |
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*/ |
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abstract protected function internalExecute(string|null $rawSql): void; |
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/** |
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* @throws InvalidParamException |
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*/ |
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protected function internalGetQueryResult(int $queryMode): mixed |
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{ |
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if ($queryMode === self::QUERY_MODE_CURSOR) { |
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return new DataReader($this); |
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} |
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if ($queryMode === self::QUERY_MODE_EXECUTE) { |
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return $this->pdoStatement?->rowCount() ?? 0; |
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} |
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if ($this->is($queryMode, self::QUERY_MODE_ROW)) { |
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/** @psalm-var array|false $result */ |
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$result = $this->pdoStatement?->fetch(PDO::FETCH_ASSOC); |
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} elseif ($this->is($queryMode, self::QUERY_MODE_COLUMN)) { |
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/** @psalm-var mixed $result */ |
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$result = $this->pdoStatement?->fetchAll(PDO::FETCH_COLUMN); |
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} elseif ($this->is($queryMode, self::QUERY_MODE_ALL)) { |
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/** @psalm-var mixed $result */ |
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$result = $this->pdoStatement?->fetchAll(PDO::FETCH_ASSOC); |
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} else { |
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throw new InvalidParamException("Unknown query mode '$queryMode'"); |
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} |
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$this->pdoStatement?->closeCursor(); |
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return $result; |
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} |
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/** |
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* Refreshes table schema, which was marked by {@see requireTableSchemaRefresh()}. |
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*/ |
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protected function refreshTableSchema(): void |
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{ |
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if ($this->refreshTableName !== null) { |
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$this->db->getSchema()->refreshTableSchema($this->refreshTableName); |
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} |
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} |
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} |
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yiisoft /
db
