Permalink
1692 lines (1486 sloc) 50.6 KB
<?php
/*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the MIT license. For more information, see
* <http://www.doctrine-project.org>.
*/
namespace Doctrine\DBAL;
use Doctrine\DBAL\Driver\ServerInfoAwareConnection;
use Doctrine\DBAL\Exception\InvalidArgumentException;
use PDO;
use Closure;
use Exception;
use Doctrine\DBAL\Types\Type;
use Doctrine\DBAL\Driver\Connection as DriverConnection;
use Doctrine\Common\EventManager;
use Doctrine\DBAL\Cache\ResultCacheStatement;
use Doctrine\DBAL\Cache\QueryCacheProfile;
use Doctrine\DBAL\Cache\ArrayStatement;
use Doctrine\DBAL\Cache\CacheException;
use Doctrine\DBAL\Driver\PingableConnection;
use Throwable;
/**
* A wrapper around a Doctrine\DBAL\Driver\Connection that adds features like
* events, transaction isolation levels, configuration, emulated transaction nesting,
* lazy connecting and more.
*
* @link www.doctrine-project.org
* @since 2.0
* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
* @author Jonathan Wage <jonwage@gmail.com>
* @author Roman Borschel <roman@code-factory.org>
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
* @author Lukas Smith <smith@pooteeweet.org> (MDB2 library)
* @author Benjamin Eberlei <kontakt@beberlei.de>
*/
class Connection implements DriverConnection
{
/**
* Constant for transaction isolation level READ UNCOMMITTED.
*/
const TRANSACTION_READ_UNCOMMITTED = 1;
/**
* Constant for transaction isolation level READ COMMITTED.
*/
const TRANSACTION_READ_COMMITTED = 2;
/**
* Constant for transaction isolation level REPEATABLE READ.
*/
const TRANSACTION_REPEATABLE_READ = 3;
/**
* Constant for transaction isolation level SERIALIZABLE.
*/
const TRANSACTION_SERIALIZABLE = 4;
/**
* Represents an array of ints to be expanded by Doctrine SQL parsing.
*
* @var integer
*/
const PARAM_INT_ARRAY = 101;
/**
* Represents an array of strings to be expanded by Doctrine SQL parsing.
*
* @var integer
*/
const PARAM_STR_ARRAY = 102;
/**
* Offset by which PARAM_* constants are detected as arrays of the param type.
*
* @var integer
*/
const ARRAY_PARAM_OFFSET = 100;
/**
* The wrapped driver connection.
*
* @var \Doctrine\DBAL\Driver\Connection
*/
protected $_conn;
/**
* @var \Doctrine\DBAL\Configuration
*/
protected $_config;
/**
* @var \Doctrine\Common\EventManager
*/
protected $_eventManager;
/**
* @var \Doctrine\DBAL\Query\Expression\ExpressionBuilder
*/
protected $_expr;
/**
* Whether or not a connection has been established.
*
* @var boolean
*/
private $_isConnected = false;
/**
* The current auto-commit mode of this connection.
*
* @var boolean
*/
private $autoCommit = true;
/**
* The transaction nesting level.
*
* @var integer
*/
private $_transactionNestingLevel = 0;
/**
* The currently active transaction isolation level.
*
* @var integer
*/
private $_transactionIsolationLevel;
/**
* If nested transactions should use savepoints.
*
* @var boolean
*/
private $_nestTransactionsWithSavepoints = false;
/**
* The parameters used during creation of the Connection instance.
*
* @var array
*/
private $_params = [];
/**
* The DatabasePlatform object that provides information about the
* database platform used by the connection.
*
* @var \Doctrine\DBAL\Platforms\AbstractPlatform
*/
private $platform;
/**
* The schema manager.
*
* @var \Doctrine\DBAL\Schema\AbstractSchemaManager
*/
protected $_schemaManager;
/**
* The used DBAL driver.
*
* @var \Doctrine\DBAL\Driver
*/
protected $_driver;
/**
* Flag that indicates whether the current transaction is marked for rollback only.
*
* @var boolean
*/
private $_isRollbackOnly = false;
/**
* @var integer
*/
protected $defaultFetchMode = PDO::FETCH_ASSOC;
/**
* Initializes a new instance of the Connection class.
*
* @param array $params The connection parameters.
* @param \Doctrine\DBAL\Driver $driver The driver to use.
* @param \Doctrine\DBAL\Configuration|null $config The configuration, optional.
* @param \Doctrine\Common\EventManager|null $eventManager The event manager, optional.
*
* @throws \Doctrine\DBAL\DBALException
*/
public function __construct(array $params, Driver $driver, Configuration $config = null,
EventManager $eventManager = null)
{
$this->_driver = $driver;
$this->_params = $params;
if (isset($params['pdo'])) {
$this->_conn = $params['pdo'];
$this->_isConnected = true;
unset($this->_params['pdo']);
}
if (isset($params["platform"])) {
if ( ! $params['platform'] instanceof Platforms\AbstractPlatform) {
throw DBALException::invalidPlatformType($params['platform']);
}
$this->platform = $params["platform"];
unset($this->_params["platform"]);
}
// Create default config and event manager if none given
if ( ! $config) {
$config = new Configuration();
}
if ( ! $eventManager) {
$eventManager = new EventManager();
}
$this->_config = $config;
$this->_eventManager = $eventManager;
$this->_expr = new Query\Expression\ExpressionBuilder($this);
$this->autoCommit = $config->getAutoCommit();
}
/**
* Gets the parameters used during instantiation.
*
* @return array
*/
public function getParams()
{
return $this->_params;
}
/**
* Gets the name of the database this Connection is connected to.
*
* @return string
*/
public function getDatabase()
{
return $this->_driver->getDatabase($this);
}
/**
* Gets the hostname of the currently connected database.
*
* @return string|null
*/
public function getHost()
{
return isset($this->_params['host']) ? $this->_params['host'] : null;
}
/**
* Gets the port of the currently connected database.
*
* @return mixed
*/
public function getPort()
{
return isset($this->_params['port']) ? $this->_params['port'] : null;
}
/**
* Gets the username used by this connection.
*
* @return string|null
*/
public function getUsername()
{
return isset($this->_params['user']) ? $this->_params['user'] : null;
}
/**
* Gets the password used by this connection.
*
* @return string|null
*/
public function getPassword()
{
return isset($this->_params['password']) ? $this->_params['password'] : null;
}
/**
* Gets the DBAL driver instance.
*
* @return \Doctrine\DBAL\Driver
*/
public function getDriver()
{
return $this->_driver;
}
/**
* Gets the Configuration used by the Connection.
*
* @return \Doctrine\DBAL\Configuration
*/
public function getConfiguration()
{
return $this->_config;
}
/**
* Gets the EventManager used by the Connection.
*
* @return \Doctrine\Common\EventManager
*/
public function getEventManager()
{
return $this->_eventManager;
}
/**
* Gets the DatabasePlatform for the connection.
*
* @return \Doctrine\DBAL\Platforms\AbstractPlatform
*
* @throws \Doctrine\DBAL\DBALException
*/
public function getDatabasePlatform()
{
if (null === $this->platform) {
$this->detectDatabasePlatform();
}
return $this->platform;
}
/**
* Gets the ExpressionBuilder for the connection.
*
* @return \Doctrine\DBAL\Query\Expression\ExpressionBuilder
*/
public function getExpressionBuilder()
{
return $this->_expr;
}
/**
* Establishes the connection with the database.
*
* @return boolean TRUE if the connection was successfully established, FALSE if
* the connection is already open.
*/
public function connect()
{
if ($this->_isConnected) {
return false;
}
$driverOptions = isset($this->_params['driverOptions']) ?
$this->_params['driverOptions'] : [];
$user = isset($this->_params['user']) ? $this->_params['user'] : null;
$password = isset($this->_params['password']) ?
$this->_params['password'] : null;
$this->_conn = $this->_driver->connect($this->_params, $user, $password, $driverOptions);
$this->_isConnected = true;
if (false === $this->autoCommit) {
$this->beginTransaction();
}
if ($this->_eventManager->hasListeners(Events::postConnect)) {
$eventArgs = new Event\ConnectionEventArgs($this);
$this->_eventManager->dispatchEvent(Events::postConnect, $eventArgs);
}
return true;
}
/**
* Detects and sets the database platform.
*
* Evaluates custom platform class and version in order to set the correct platform.
*
* @throws DBALException if an invalid platform was specified for this connection.
*/
private function detectDatabasePlatform()
{
$version = $this->getDatabasePlatformVersion();
if (null !== $version) {
$this->platform = $this->_driver->createDatabasePlatformForVersion($version);
} else {
$this->platform = $this->_driver->getDatabasePlatform();
}
$this->platform->setEventManager($this->_eventManager);
}
/**
* Returns the version of the related platform if applicable.
*
* Returns null if either the driver is not capable to create version
* specific platform instances, no explicit server version was specified
* or the underlying driver connection cannot determine the platform
* version without having to query it (performance reasons).
*
* @return string|null
*
* @throws Exception
*/
private function getDatabasePlatformVersion()
{
// Driver does not support version specific platforms.
if ( ! $this->_driver instanceof VersionAwarePlatformDriver) {
return null;
}
// Explicit platform version requested (supersedes auto-detection).
if (isset($this->_params['serverVersion'])) {
return $this->_params['serverVersion'];
}
// If not connected, we need to connect now to determine the platform version.
if (null === $this->_conn) {
try {
$this->connect();
} catch (\Exception $originalException) {
if (empty($this->_params['dbname'])) {
throw $originalException;
}
// The database to connect to might not yet exist.
// Retry detection without database name connection parameter.
$databaseName = $this->_params['dbname'];
$this->_params['dbname'] = null;
try {
$this->connect();
} catch (\Exception $fallbackException) {
// Either the platform does not support database-less connections
// or something else went wrong.
// Reset connection parameters and rethrow the original exception.
$this->_params['dbname'] = $databaseName;
throw $originalException;
}
// Reset connection parameters.
$this->_params['dbname'] = $databaseName;
$serverVersion = $this->getServerVersion();
// Close "temporary" connection to allow connecting to the real database again.
$this->close();
return $serverVersion;
}
}
return $this->getServerVersion();
}
/**
* Returns the database server version if the underlying driver supports it.
*
* @return string|null
*/
private function getServerVersion()
{
// Automatic platform version detection.
if ($this->_conn instanceof ServerInfoAwareConnection &&
! $this->_conn->requiresQueryForServerVersion()
) {
return $this->_conn->getServerVersion();
}
// Unable to detect platform version.
return null;
}
/**
* Returns the current auto-commit mode for this connection.
*
* @return boolean True if auto-commit mode is currently enabled for this connection, false otherwise.
*
* @see setAutoCommit
*/
public function isAutoCommit()
{
return true === $this->autoCommit;
}
/**
* Sets auto-commit mode for this connection.
*
* If a connection is in auto-commit mode, then all its SQL statements will be executed and committed as individual
* transactions. Otherwise, its SQL statements are grouped into transactions that are terminated by a call to either
* the method commit or the method rollback. By default, new connections are in auto-commit mode.
*
* NOTE: If this method is called during a transaction and the auto-commit mode is changed, the transaction is
* committed. If this method is called and the auto-commit mode is not changed, the call is a no-op.
*
* @param boolean $autoCommit True to enable auto-commit mode; false to disable it.
*
* @see isAutoCommit
*/
public function setAutoCommit($autoCommit)
{
$autoCommit = (boolean) $autoCommit;
// Mode not changed, no-op.
if ($autoCommit === $this->autoCommit) {
return;
}
$this->autoCommit = $autoCommit;
// Commit all currently active transactions if any when switching auto-commit mode.
if (true === $this->_isConnected && 0 !== $this->_transactionNestingLevel) {
$this->commitAll();
}
}
/**
* Sets the fetch mode.
*
* @param integer $fetchMode
*
* @return void
*/
public function setFetchMode($fetchMode)
{
$this->defaultFetchMode = $fetchMode;
}
/**
* Prepares and executes an SQL query and returns the first row of the result
* as an associative array.
*
* @param string $statement The SQL query.
* @param array $params The query parameters.
* @param array $types The query parameter types.
*
* @return array|bool False is returned if no rows are found.
*
* @throws \Doctrine\DBAL\DBALException
*/
public function fetchAssoc($statement, array $params = [], array $types = [])
{
return $this->executeQuery($statement, $params, $types)->fetch(PDO::FETCH_ASSOC);
}
/**
* Prepares and executes an SQL query and returns the first row of the result
* as a numerically indexed array.
*
* @param string $statement The SQL query to be executed.
* @param array $params The prepared statement params.
* @param array $types The query parameter types.
*
* @return array|bool False is returned if no rows are found.
*/
public function fetchArray($statement, array $params = [], array $types = [])
{
return $this->executeQuery($statement, $params, $types)->fetch(PDO::FETCH_NUM);
}
/**
* Prepares and executes an SQL query and returns the value of a single column
* of the first row of the result.
*
* @param string $statement The SQL query to be executed.
* @param array $params The prepared statement params.
* @param integer $column The 0-indexed column number to retrieve.
* @param array $types The query parameter types.
*
* @return mixed|bool False is returned if no rows are found.
*
* @throws \Doctrine\DBAL\DBALException
*/
public function fetchColumn($statement, array $params = [], $column = 0, array $types = [])
{
return $this->executeQuery($statement, $params, $types)->fetchColumn($column);
}
/**
* Whether an actual connection to the database is established.
*
* @return boolean
*/
public function isConnected()
{
return $this->_isConnected;
}
/**
* Checks whether a transaction is currently active.
*
* @return boolean TRUE if a transaction is currently active, FALSE otherwise.
*/
public function isTransactionActive()
{
return $this->_transactionNestingLevel > 0;
}
/**
* Gathers conditions for an update or delete call.
*
* @param array $identifiers Input array of columns to values
*
* @return string[][] a triplet with:
* - the first key being the columns
* - the second key being the values
* - the third key being the conditions
*/
private function gatherConditions(array $identifiers)
{
$columns = [];
$values = [];
$conditions = [];
foreach ($identifiers as $columnName => $value) {
if (null === $value) {
$conditions[] = $this->getDatabasePlatform()->getIsNullExpression($columnName);
continue;
}
$columns[] = $columnName;
$values[] = $value;
$conditions[] = $columnName . ' = ?';
}
return [$columns, $values, $conditions];
}
/**
* Executes an SQL DELETE statement on a table.
*
* Table expression and columns are not escaped and are not safe for user-input.
*
* @param string $tableExpression The expression of the table on which to delete.
* @param array $identifier The deletion criteria. An associative array containing column-value pairs.
* @param array $types The types of identifiers.
*
* @return integer The number of affected rows.
*
* @throws \Doctrine\DBAL\DBALException
* @throws InvalidArgumentException
*/
public function delete($tableExpression, array $identifier, array $types = [])
{
if (empty($identifier)) {
throw InvalidArgumentException::fromEmptyCriteria();
}
list($columns, $values, $conditions) = $this->gatherConditions($identifier);
return $this->executeUpdate(
'DELETE FROM ' . $tableExpression . ' WHERE ' . implode(' AND ', $conditions),
$values,
is_string(key($types)) ? $this->extractTypeValues($columns, $types) : $types
);
}
/**
* Closes the connection.
*
* @return void
*/
public function close()
{
$this->_conn = null;
$this->_isConnected = false;
}
/**
* Sets the transaction isolation level.
*
* @param integer $level The level to set.
*
* @return integer
*/
public function setTransactionIsolation($level)
{
$this->_transactionIsolationLevel = $level;
return $this->executeUpdate($this->getDatabasePlatform()->getSetTransactionIsolationSQL($level));
}
/**
* Gets the currently active transaction isolation level.
*
* @return integer The current transaction isolation level.
*/
public function getTransactionIsolation()
{
if (null === $this->_transactionIsolationLevel) {
$this->_transactionIsolationLevel = $this->getDatabasePlatform()->getDefaultTransactionIsolationLevel();
}
return $this->_transactionIsolationLevel;
}
/**
* Executes an SQL UPDATE statement on a table.
*
* Table expression and columns are not escaped and are not safe for user-input.
*
* @param string $tableExpression The expression of the table to update quoted or unquoted.
* @param array $data An associative array containing column-value pairs.
* @param array $identifier The update criteria. An associative array containing column-value pairs.
* @param array $types Types of the merged $data and $identifier arrays in that order.
*
* @return integer The number of affected rows.
*
* @throws \Doctrine\DBAL\DBALException
*/
public function update($tableExpression, array $data, array $identifier, array $types = [])
{
$setColumns = [];
$setValues = [];
$set = [];
foreach ($data as $columnName => $value) {
$setColumns[] = $columnName;
$setValues[] = $value;
$set[] = $columnName . ' = ?';
}
list($conditionColumns, $conditionValues, $conditions) = $this->gatherConditions($identifier);
$columns = array_merge($setColumns, $conditionColumns);
$values = array_merge($setValues, $conditionValues);
if (is_string(key($types))) {
$types = $this->extractTypeValues($columns, $types);
}
$sql = 'UPDATE ' . $tableExpression . ' SET ' . implode(', ', $set)
. ' WHERE ' . implode(' AND ', $conditions);
return $this->executeUpdate($sql, $values, $types);
}
/**
* Inserts a table row with specified data.
*
* Table expression and columns are not escaped and are not safe for user-input.
*
* @param string $tableExpression The expression of the table to insert data into, quoted or unquoted.
* @param array $data An associative array containing column-value pairs.
* @param array $types Types of the inserted data.
*
* @return integer The number of affected rows.
*
* @throws \Doctrine\DBAL\DBALException
*/
public function insert($tableExpression, array $data, array $types = [])
{
if (empty($data)) {
return $this->executeUpdate('INSERT INTO ' . $tableExpression . ' ()' . ' VALUES ()');
}
$columns = [];
$values = [];
$set = [];
foreach ($data as $columnName => $value) {
$columns[] = $columnName;
$values[] = $value;
$set[] = '?';
}
return $this->executeUpdate(
'INSERT INTO ' . $tableExpression . ' (' . implode(', ', $columns) . ')' .
' VALUES (' . implode(', ', $set) . ')',
$values,
is_string(key($types)) ? $this->extractTypeValues($columns, $types) : $types
);
}
/**
* Extract ordered type list from an ordered column list and type map.
*
* @param array $columnList
* @param array $types
*
* @return array
*/
private function extractTypeValues(array $columnList, array $types)
{
$typeValues = [];
foreach ($columnList as $columnIndex => $columnName) {
$typeValues[] = isset($types[$columnName])
? $types[$columnName]
: \PDO::PARAM_STR;
}
return $typeValues;
}
/**
* Quotes a string so it can be safely used as a table or column name, even if
* it is a reserved name.
*
* Delimiting style depends on the underlying database platform that is being used.
*
* NOTE: Just because you CAN use quoted identifiers does not mean
* you SHOULD use them. In general, they end up causing way more
* problems than they solve.
*
* @param string $str The name to be quoted.
*
* @return string The quoted name.
*/
public function quoteIdentifier($str)
{
return $this->getDatabasePlatform()->quoteIdentifier($str);
}
/**
* Quotes a given input parameter.
*
* @param mixed $input The parameter to be quoted.
* @param int|null $type The type of the parameter.
*
* @return string The quoted parameter.
*/
public function quote($input, $type = null)
{
$this->connect();
list($value, $bindingType) = $this->getBindingInfo($input, $type);
return $this->_conn->quote($value, $bindingType);
}
/**
* Prepares and executes an SQL query and returns the result as an associative array.
*
* @param string $sql The SQL query.
* @param array $params The query parameters.
* @param array $types The query parameter types.
*
* @return array
*/
public function fetchAll($sql, array $params = [], $types = [])
{
return $this->executeQuery($sql, $params, $types)->fetchAll();
}
/**
* Prepares an SQL statement.
*
* @param string $statement The SQL statement to prepare.
*
* @return \Doctrine\DBAL\Statement The prepared statement.
*
* @throws \Doctrine\DBAL\DBALException
*/
public function prepare($statement)
{
try {
$stmt = new Statement($statement, $this);
} catch (Exception $ex) {
throw DBALException::driverExceptionDuringQuery($this->_driver, $ex, $statement);
}
$stmt->setFetchMode($this->defaultFetchMode);
return $stmt;
}
/**
* Executes an, optionally parametrized, SQL query.
*
* If the query is parametrized, a prepared statement is used.
* If an SQLLogger is configured, the execution is logged.
*
* @param string $query The SQL query to execute.
* @param array $params The parameters to bind to the query, if any.
* @param array $types The types the previous parameters are in.
* @param \Doctrine\DBAL\Cache\QueryCacheProfile|null $qcp The query cache profile, optional.
*
* @return \Doctrine\DBAL\Driver\Statement The executed statement.
*
* @throws \Doctrine\DBAL\DBALException
*/
public function executeQuery($query, array $params = [], $types = [], QueryCacheProfile $qcp = null)
{
if ($qcp !== null) {
return $this->executeCacheQuery($query, $params, $types, $qcp);
}
$this->connect();
$logger = $this->_config->getSQLLogger();
if ($logger) {
$logger->startQuery($query, $params, $types);
}
try {
if ($params) {
list($query, $params, $types) = SQLParserUtils::expandListParameters($query, $params, $types);
$stmt = $this->_conn->prepare($query);
if ($types) {
$this->_bindTypedValues($stmt, $params, $types);
$stmt->execute();
} else {
$stmt->execute($params);
}
} else {
$stmt = $this->_conn->query($query);
}
} catch (Exception $ex) {
throw DBALException::driverExceptionDuringQuery($this->_driver, $ex, $query, $this->resolveParams($params, $types));
}
$stmt->setFetchMode($this->defaultFetchMode);
if ($logger) {
$logger->stopQuery();
}
return $stmt;
}
/**
* Executes a caching query.
*
* @param string $query The SQL query to execute.
* @param array $params The parameters to bind to the query, if any.
* @param array $types The types the previous parameters are in.
* @param \Doctrine\DBAL\Cache\QueryCacheProfile $qcp The query cache profile.
*
* @return \Doctrine\DBAL\Driver\ResultStatement
*
* @throws \Doctrine\DBAL\Cache\CacheException
*/
public function executeCacheQuery($query, $params, $types, QueryCacheProfile $qcp)
{
$resultCache = $qcp->getResultCacheDriver() ?: $this->_config->getResultCacheImpl();
if ( ! $resultCache) {
throw CacheException::noResultDriverConfigured();
}
list($cacheKey, $realKey) = $qcp->generateCacheKeys($query, $params, $types, $this->getParams());
// fetch the row pointers entry
if ($data = $resultCache->fetch($cacheKey)) {
// is the real key part of this row pointers map or is the cache only pointing to other cache keys?
if (isset($data[$realKey])) {
$stmt = new ArrayStatement($data[$realKey]);
} elseif (array_key_exists($realKey, $data)) {
$stmt = new ArrayStatement([]);
}
}
if (!isset($stmt)) {
$stmt = new ResultCacheStatement($this->executeQuery($query, $params, $types), $resultCache, $cacheKey, $realKey, $qcp->getLifetime());
}
$stmt->setFetchMode($this->defaultFetchMode);
return $stmt;
}
/**
* Executes an, optionally parametrized, SQL query and returns the result,
* applying a given projection/transformation function on each row of the result.
*
* @param string $query The SQL query to execute.
* @param array $params The parameters, if any.
* @param \Closure $function The transformation function that is applied on each row.
* The function receives a single parameter, an array, that
* represents a row of the result set.
*
* @return array The projected result of the query.
*/
public function project($query, array $params, Closure $function)
{
$result = [];
$stmt = $this->executeQuery($query, $params);
while ($row = $stmt->fetch()) {
$result[] = $function($row);
}
$stmt->closeCursor();
return $result;
}
/**
* Executes an SQL statement, returning a result set as a Statement object.
*
* @return \Doctrine\DBAL\Driver\Statement
*
* @throws \Doctrine\DBAL\DBALException
*/
public function query()
{
$this->connect();
$args = func_get_args();
$logger = $this->_config->getSQLLogger();
if ($logger) {
$logger->startQuery($args[0]);
}
try {
$statement = $this->_conn->query(...$args);
} catch (Exception $ex) {
throw DBALException::driverExceptionDuringQuery($this->_driver, $ex, $args[0]);
}
$statement->setFetchMode($this->defaultFetchMode);
if ($logger) {
$logger->stopQuery();
}
return $statement;
}
/**
* Executes an SQL INSERT/UPDATE/DELETE query with the given parameters
* and returns the number of affected rows.
*
* This method supports PDO binding types as well as DBAL mapping types.
*
* @param string $query The SQL query.
* @param array $params The query parameters.
* @param array $types The parameter types.
*
* @return integer The number of affected rows.
*
* @throws \Doctrine\DBAL\DBALException
*/
public function executeUpdate($query, array $params = [], array $types = [])
{
$this->connect();
$logger = $this->_config->getSQLLogger();
if ($logger) {
$logger->startQuery($query, $params, $types);
}
try {
if ($params) {
list($query, $params, $types) = SQLParserUtils::expandListParameters($query, $params, $types);
$stmt = $this->_conn->prepare($query);
if ($types) {
$this->_bindTypedValues($stmt, $params, $types);
$stmt->execute();
} else {
$stmt->execute($params);
}
$result = $stmt->rowCount();
} else {
$result = $this->_conn->exec($query);
}
} catch (Exception $ex) {
throw DBALException::driverExceptionDuringQuery($this->_driver, $ex, $query, $this->resolveParams($params, $types));
}
if ($logger) {
$logger->stopQuery();
}
return $result;
}
/**
* Executes an SQL statement and return the number of affected rows.
*
* @param string $statement
*
* @return integer The number of affected rows.
*
* @throws \Doctrine\DBAL\DBALException
*/
public function exec($statement)
{
$this->connect();
$logger = $this->_config->getSQLLogger();
if ($logger) {
$logger->startQuery($statement);
}
try {
$result = $this->_conn->exec($statement);
} catch (Exception $ex) {
throw DBALException::driverExceptionDuringQuery($this->_driver, $ex, $statement);
}
if ($logger) {
$logger->stopQuery();
}
return $result;
}
/**
* Returns the current transaction nesting level.
*
* @return integer The nesting level. A value of 0 means there's no active transaction.
*/
public function getTransactionNestingLevel()
{
return $this->_transactionNestingLevel;
}
/**
* Fetches the SQLSTATE associated with the last database operation.
*
* @return integer The last error code.
*/
public function errorCode()
{
$this->connect();
return $this->_conn->errorCode();
}
/**
* Fetches extended error information associated with the last database operation.
*
* @return array The last error information.
*/
public function errorInfo()
{
$this->connect();
return $this->_conn->errorInfo();
}
/**
* Returns the ID of the last inserted row, or the last value from a sequence object,
* depending on the underlying driver.
*
* Note: This method may not return a meaningful or consistent result across different drivers,
* because the underlying database may not even support the notion of AUTO_INCREMENT/IDENTITY
* columns or sequences.
*
* @param string|null $seqName Name of the sequence object from which the ID should be returned.
*
* @return string A string representation of the last inserted ID.
*/
public function lastInsertId($seqName = null)
{
$this->connect();
return $this->_conn->lastInsertId($seqName);
}
/**
* Executes a function in a transaction.
*
* The function gets passed this Connection instance as an (optional) parameter.
*
* If an exception occurs during execution of the function or transaction commit,
* the transaction is rolled back and the exception re-thrown.
*
* @param \Closure $func The function to execute transactionally.
*
* @return mixed The value returned by $func
*
* @throws Exception
* @throws Throwable
*/
public function transactional(Closure $func)
{
$this->beginTransaction();
try {
$res = $func($this);
$this->commit();
return $res;
} catch (Exception $e) {
$this->rollBack();
throw $e;
} catch (Throwable $e) {
$this->rollBack();
throw $e;
}
}
/**
* Sets if nested transactions should use savepoints.
*
* @param boolean $nestTransactionsWithSavepoints
*
* @return void
*
* @throws \Doctrine\DBAL\ConnectionException
*/
public function setNestTransactionsWithSavepoints($nestTransactionsWithSavepoints)
{
if ($this->_transactionNestingLevel > 0) {
throw ConnectionException::mayNotAlterNestedTransactionWithSavepointsInTransaction();
}
if ( ! $this->getDatabasePlatform()->supportsSavepoints()) {
throw ConnectionException::savepointsNotSupported();
}
$this->_nestTransactionsWithSavepoints = (bool) $nestTransactionsWithSavepoints;
}
/**
* Gets if nested transactions should use savepoints.
*
* @return boolean
*/
public function getNestTransactionsWithSavepoints()
{
return $this->_nestTransactionsWithSavepoints;
}
/**
* Returns the savepoint name to use for nested transactions are false if they are not supported
* "savepointFormat" parameter is not set
*
* @return mixed A string with the savepoint name or false.
*/
protected function _getNestedTransactionSavePointName()
{
return 'DOCTRINE2_SAVEPOINT_'.$this->_transactionNestingLevel;
}
/**
* Starts a transaction by suspending auto-commit mode.
*
* @return void
*/
public function beginTransaction()
{
$this->connect();
++$this->_transactionNestingLevel;
$logger = $this->_config->getSQLLogger();
if ($this->_transactionNestingLevel == 1) {
if ($logger) {
$logger->startQuery('"START TRANSACTION"');
}
$this->_conn->beginTransaction();
if ($logger) {
$logger->stopQuery();
}
} elseif ($this->_nestTransactionsWithSavepoints) {
if ($logger) {
$logger->startQuery('"SAVEPOINT"');
}
$this->createSavepoint($this->_getNestedTransactionSavePointName());
if ($logger) {
$logger->stopQuery();
}
}
}
/**
* Commits the current transaction.
*
* @return void
*
* @throws \Doctrine\DBAL\ConnectionException If the commit failed due to no active transaction or
* because the transaction was marked for rollback only.
*/
public function commit()
{
if ($this->_transactionNestingLevel == 0) {
throw ConnectionException::noActiveTransaction();
}
if ($this->_isRollbackOnly) {
throw ConnectionException::commitFailedRollbackOnly();
}
$this->connect();
$logger = $this->_config->getSQLLogger();
if ($this->_transactionNestingLevel == 1) {
if ($logger) {
$logger->startQuery('"COMMIT"');
}
$this->_conn->commit();
if ($logger) {
$logger->stopQuery();
}
} elseif ($this->_nestTransactionsWithSavepoints) {
if ($logger) {
$logger->startQuery('"RELEASE SAVEPOINT"');
}
$this->releaseSavepoint($this->_getNestedTransactionSavePointName());
if ($logger) {
$logger->stopQuery();
}
}
--$this->_transactionNestingLevel;
if (false === $this->autoCommit && 0 === $this->_transactionNestingLevel) {
$this->beginTransaction();
}
}
/**
* Commits all current nesting transactions.
*/
private function commitAll()
{
while (0 !== $this->_transactionNestingLevel) {
if (false === $this->autoCommit && 1 === $this->_transactionNestingLevel) {
// When in no auto-commit mode, the last nesting commit immediately starts a new transaction.
// Therefore we need to do the final commit here and then leave to avoid an infinite loop.
$this->commit();
return;
}
$this->commit();
}
}
/**
* Cancels any database changes done during the current transaction.
*
* @throws \Doctrine\DBAL\ConnectionException If the rollback operation failed.
*/
public function rollBack()
{
if ($this->_transactionNestingLevel == 0) {
throw ConnectionException::noActiveTransaction();
}
$this->connect();
$logger = $this->_config->getSQLLogger();
if ($this->_transactionNestingLevel == 1) {
if ($logger) {
$logger->startQuery('"ROLLBACK"');
}
$this->_transactionNestingLevel = 0;
$this->_conn->rollBack();
$this->_isRollbackOnly = false;
if ($logger) {
$logger->stopQuery();
}
if (false === $this->autoCommit) {
$this->beginTransaction();
}
} elseif ($this->_nestTransactionsWithSavepoints) {
if ($logger) {
$logger->startQuery('"ROLLBACK TO SAVEPOINT"');
}
$this->rollbackSavepoint($this->_getNestedTransactionSavePointName());
--$this->_transactionNestingLevel;
if ($logger) {
$logger->stopQuery();
}
} else {
$this->_isRollbackOnly = true;
--$this->_transactionNestingLevel;
}
}
/**
* Creates a new savepoint.
*
* @param string $savepoint The name of the savepoint to create.
*
* @return void
*
* @throws \Doctrine\DBAL\ConnectionException
*/
public function createSavepoint($savepoint)
{
if ( ! $this->getDatabasePlatform()->supportsSavepoints()) {
throw ConnectionException::savepointsNotSupported();
}
$this->_conn->exec($this->platform->createSavePoint($savepoint));
}
/**
* Releases the given savepoint.
*
* @param string $savepoint The name of the savepoint to release.
*
* @return void
*
* @throws \Doctrine\DBAL\ConnectionException
*/
public function releaseSavepoint($savepoint)
{
if ( ! $this->getDatabasePlatform()->supportsSavepoints()) {
throw ConnectionException::savepointsNotSupported();
}
if ($this->platform->supportsReleaseSavepoints()) {
$this->_conn->exec($this->platform->releaseSavePoint($savepoint));
}
}
/**
* Rolls back to the given savepoint.
*
* @param string $savepoint The name of the savepoint to rollback to.
*
* @return void
*
* @throws \Doctrine\DBAL\ConnectionException
*/
public function rollbackSavepoint($savepoint)
{
if ( ! $this->getDatabasePlatform()->supportsSavepoints()) {
throw ConnectionException::savepointsNotSupported();
}
$this->_conn->exec($this->platform->rollbackSavePoint($savepoint));
}
/**
* Gets the wrapped driver connection.
*
* @return \Doctrine\DBAL\Driver\Connection
*/
public function getWrappedConnection()
{
$this->connect();
return $this->_conn;
}
/**
* Gets the SchemaManager that can be used to inspect or change the
* database schema through the connection.
*
* @return \Doctrine\DBAL\Schema\AbstractSchemaManager
*/
public function getSchemaManager()
{
if ( ! $this->_schemaManager) {
$this->_schemaManager = $this->_driver->getSchemaManager($this);
}
return $this->_schemaManager;
}
/**
* Marks the current transaction so that the only possible
* outcome for the transaction to be rolled back.
*
* @return void
*
* @throws \Doctrine\DBAL\ConnectionException If no transaction is active.
*/
public function setRollbackOnly()
{
if ($this->_transactionNestingLevel == 0) {
throw ConnectionException::noActiveTransaction();
}
$this->_isRollbackOnly = true;
}
/**
* Checks whether the current transaction is marked for rollback only.
*
* @return boolean
*
* @throws \Doctrine\DBAL\ConnectionException If no transaction is active.
*/
public function isRollbackOnly()
{
if ($this->_transactionNestingLevel == 0) {
throw ConnectionException::noActiveTransaction();
}
return $this->_isRollbackOnly;
}
/**
* Converts a given value to its database representation according to the conversion
* rules of a specific DBAL mapping type.
*
* @param mixed $value The value to convert.
* @param string $type The name of the DBAL mapping type.
*
* @return mixed The converted value.
*/
public function convertToDatabaseValue($value, $type)
{
return Type::getType($type)->convertToDatabaseValue($value, $this->getDatabasePlatform());
}
/**
* Converts a given value to its PHP representation according to the conversion
* rules of a specific DBAL mapping type.
*
* @param mixed $value The value to convert.
* @param string $type The name of the DBAL mapping type.
*
* @return mixed The converted type.
*/
public function convertToPHPValue($value, $type)
{
return Type::getType($type)->convertToPHPValue($value, $this->getDatabasePlatform());
}
/**
* Binds a set of parameters, some or all of which are typed with a PDO binding type
* or DBAL mapping type, to a given statement.
*
* @param \Doctrine\DBAL\Driver\Statement $stmt The statement to bind the values to.
* @param array $params The map/list of named/positional parameters.
* @param array $types The parameter types (PDO binding types or DBAL mapping types).
*
* @return void
*
* @internal Duck-typing used on the $stmt parameter to support driver statements as well as
* raw PDOStatement instances.
*/
private function _bindTypedValues($stmt, array $params, array $types)
{
// Check whether parameters are positional or named. Mixing is not allowed, just like in PDO.
if (is_int(key($params))) {
// Positional parameters
$typeOffset = array_key_exists(0, $types) ? -1 : 0;
$bindIndex = 1;
foreach ($params as $value) {
$typeIndex = $bindIndex + $typeOffset;
if (isset($types[$typeIndex])) {
$type = $types[$typeIndex];
list($value, $bindingType) = $this->getBindingInfo($value, $type);
$stmt->bindValue($bindIndex, $value, $bindingType);
} else {
$stmt->bindValue($bindIndex, $value);
}
++$bindIndex;
}
} else {
// Named parameters
foreach ($params as $name => $value) {
if (isset($types[$name])) {
$type = $types[$name];
list($value, $bindingType) = $this->getBindingInfo($value, $type);
$stmt->bindValue($name, $value, $bindingType);
} else {
$stmt->bindValue($name, $value);
}
}
}
}
/**
* Gets the binding type of a given type. The given type can be a PDO or DBAL mapping type.
*
* @param mixed $value The value to bind.
* @param mixed $type The type to bind (PDO or DBAL).
*
* @return array [0] => the (escaped) value, [1] => the binding type.
*/
private function getBindingInfo($value, $type)
{
if (is_string($type)) {
$type = Type::getType($type);
}
if ($type instanceof Type) {
$value = $type->convertToDatabaseValue($value, $this->getDatabasePlatform());
$bindingType = $type->getBindingType();
} else {
$bindingType = $type; // PDO::PARAM_* constants
}
return [$value, $bindingType];
}
/**
* Resolves the parameters to a format which can be displayed.
*
* @internal This is a purely internal method. If you rely on this method, you are advised to
* copy/paste the code as this method may change, or be removed without prior notice.
*
* @param array $params
* @param array $types
*
* @return array
*/
public function resolveParams(array $params, array $types)
{
$resolvedParams = [];
// Check whether parameters are positional or named. Mixing is not allowed, just like in PDO.
if (is_int(key($params))) {
// Positional parameters
$typeOffset = array_key_exists(0, $types) ? -1 : 0;
$bindIndex = 1;
foreach ($params as $value) {
$typeIndex = $bindIndex + $typeOffset;
if (isset($types[$typeIndex])) {
$type = $types[$typeIndex];
list($value,) = $this->getBindingInfo($value, $type);
$resolvedParams[$bindIndex] = $value;
} else {
$resolvedParams[$bindIndex] = $value;
}
++$bindIndex;
}
} else {
// Named parameters
foreach ($params as $name => $value) {
if (isset($types[$name])) {
$type = $types[$name];
list($value,) = $this->getBindingInfo($value, $type);
$resolvedParams[$name] = $value;
} else {
$resolvedParams[$name] = $value;
}
}
}
return $resolvedParams;
}
/**
* Creates a new instance of a SQL query builder.
*
* @return \Doctrine\DBAL\Query\QueryBuilder
*/
public function createQueryBuilder()
{
return new Query\QueryBuilder($this);
}
/**
* Ping the server
*
* When the server is not available the method returns FALSE.
* It is responsibility of the developer to handle this case
* and abort the request or reconnect manually:
*
* @example
*
* if ($conn->ping() === false) {
* $conn->close();
* $conn->connect();
* }
*
* It is undefined if the underlying driver attempts to reconnect
* or disconnect when the connection is not available anymore
* as long it returns TRUE when a reconnect succeeded and
* FALSE when the connection was dropped.
*
* @return bool
*/
public function ping()
{
$this->connect();
if ($this->_conn instanceof PingableConnection) {
return $this->_conn->ping();
}
try {
$this->query($this->getDatabasePlatform()->getDummySelectSQL());
return true;
} catch (DBALException $e) {
return false;
}
}
}