Connection::errorInfo() - Code Metrics - Inspection of "Merge pull request #24948 from nextcloud/dependabo..." - nextcloud/server - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( aeb32e...81302f )

by Christoph

created 2021-01-08 13:58 UTC

Connection::errorInfo() A

↳ Parent: Connection

Complexity

Conditions	1
Paths	1

Size

Total Lines	2
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	1
eloc	1
nc	1
nop	0
dl	0
loc	2
rs	10
c	0
b	0
f	0

<?php

declare(strict_types=1);

/**
 * @copyright Copyright (c) 2016, ownCloud, Inc.
 *
 * @author Bart Visscher <[email protected]>
 * @author Christoph Wurst <[email protected]>
 * @author Joas Schilling <[email protected]>
 * @author Julius Härtl <[email protected]>
 * @author Morris Jobke <[email protected]>
 * @author Ole Ostergaard <[email protected]>
 * @author Ole Ostergaard <[email protected]>
 * @author Philipp Schaffrath <[email protected]>
 * @author Robin Appelman <[email protected]>
 * @author Robin McCorkell <[email protected]>
 * @author Roeland Jago Douma <[email protected]>
 * @author Thomas Müller <[email protected]>
 *
 * @license AGPL-3.0
 *
 * This code is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License, version 3,
 * along with this program. If not, see <http://www.gnu.org/licenses/>
 *
 */

namespace OC\DB;

use Doctrine\Common\EventManager;
use Doctrine\DBAL\Cache\QueryCacheProfile;
use Doctrine\DBAL\Configuration;
use Doctrine\DBAL\Driver;
use Doctrine\DBAL\Exception;
use Doctrine\DBAL\Exception\ConstraintViolationException;
use Doctrine\DBAL\Exception\NotNullConstraintViolationException;
use Doctrine\DBAL\Platforms\MySQLPlatform;
use Doctrine\DBAL\Result;
use Doctrine\DBAL\Schema\Schema;
use Doctrine\DBAL\Statement;
use OC\DB\QueryBuilder\QueryBuilder;
use OC\SystemConfig;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\ILogger;
use OCP\PreConditionNotMetException;

class Connection extends ReconnectWrapper {
	/** @var string */
	protected $tablePrefix;

	/** @var \OC\DB\Adapter $adapter */
	protected $adapter;

	/** @var SystemConfig */
	private $systemConfig;

	/** @var ILogger */
	private $logger;

	protected $lockedTable = null;

	/** @var int */
	protected $queriesBuilt = 0;

	/** @var int */
	protected $queriesExecuted = 0;

	public function connect() {
		try {
			return parent::connect();
		} catch (Exception $e) {
			// throw a new exception to prevent leaking info from the stacktrace
			throw new Exception('Failed to connect to the database: ' . $e->getMessage(), $e->getCode());
		}
	}

	public function getStats(): array {
		return [
			'built' => $this->queriesBuilt,
			'executed' => $this->queriesExecuted,
		];
	}

	/**
	 * Returns a QueryBuilder for the connection.
	 */
	public function getQueryBuilder(): IQueryBuilder {
		$this->queriesBuilt++;
		return new QueryBuilder(
			new ConnectionAdapter($this),
			$this->systemConfig,
			$this->logger
		);
	}

	/**
	 * Gets the QueryBuilder for the connection.
	 *
	 * @return \Doctrine\DBAL\Query\QueryBuilder
	 * @deprecated please use $this->getQueryBuilder() instead
	 */
	public function createQueryBuilder() {
		$backtrace = $this->getCallerBacktrace();
		\OC::$server->getLogger()->debug('Doctrine QueryBuilder retrieved in {backtrace}', ['app' => 'core', 'backtrace' => $backtrace]);
		$this->queriesBuilt++;
		return parent::createQueryBuilder();
	}

	/**
	 * Gets the ExpressionBuilder for the connection.
	 *
	 * @return \Doctrine\DBAL\Query\Expression\ExpressionBuilder
	 * @deprecated please use $this->getQueryBuilder()->expr() instead
	 */
	public function getExpressionBuilder() {
		$backtrace = $this->getCallerBacktrace();
		\OC::$server->getLogger()->debug('Doctrine ExpressionBuilder retrieved in {backtrace}', ['app' => 'core', 'backtrace' => $backtrace]);
		$this->queriesBuilt++;
		return parent::getExpressionBuilder();
	}

	/**
	 * Get the file and line that called the method where `getCallerBacktrace()` was used
	 *
	 * @return string
	 */
	protected function getCallerBacktrace() {
		$traces = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 2);

		// 0 is the method where we use `getCallerBacktrace`
		// 1 is the target method which uses the method we want to log
		if (isset($traces[1])) {
			return $traces[1]['file'] . ':' . $traces[1]['line'];
		}

		return '';
	}

	/**
	 * @return string
	 */
	public function getPrefix() {
		return $this->tablePrefix;
	}

	/**
	 * Initializes a new instance of the Connection class.
	 *
	 * @param array $params  The connection parameters.
	 * @param \Doctrine\DBAL\Driver $driver
	 * @param \Doctrine\DBAL\Configuration $config
	 * @param \Doctrine\Common\EventManager $eventManager
	 * @throws \Exception
	 */
	public function __construct(array $params, Driver $driver, Configuration $config = null,
		EventManager $eventManager = null) {
		if (!isset($params['adapter'])) {
			throw new \Exception('adapter not set');
		}
		if (!isset($params['tablePrefix'])) {
			throw new \Exception('tablePrefix not set');
		}
		parent::__construct($params, $driver, $config, $eventManager);
		$this->adapter = new $params['adapter']($this);
		$this->tablePrefix = $params['tablePrefix'];

		$this->systemConfig = \OC::$server->getSystemConfig();
		$this->logger = \OC::$server->getLogger();
	}

	/**
	 * Prepares an SQL statement.
	 *
	 * @param string $statement The SQL statement to prepare.
	 * @param int $limit
	 * @param int $offset
	 * @return Statement The prepared statement.
	 */
	public function prepare($statement, $limit = null, $offset = null): Statement {
		if ($limit === -1) {
			$limit = null;
		}
		if (!is_null($limit)) {
			$platform = $this->getDatabasePlatform();
			$statement = $platform->modifyLimitQuery($statement, $limit, $offset);
		}
		$statement = $this->replaceTablePrefix($statement);
		$statement = $this->adapter->fixupStatement($statement);

		return parent::prepare($statement);
	}

	/**
	 * 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                                      $sql  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 Result The executed statement.
	 *
	 * @throws \Doctrine\DBAL\Exception
	 */
	public function executeQuery(string $sql, array $params = [], $types = [], QueryCacheProfile $qcp = null): Result {
		$sql = $this->replaceTablePrefix($sql);
		$sql = $this->adapter->fixupStatement($sql);
		$this->queriesExecuted++;
		return parent::executeQuery($sql, $params, $types, $qcp);
	}

	public function executeUpdate(string $sql, array $params = [], array $types = []): int {
		$sql = $this->replaceTablePrefix($sql);
		$sql = $this->adapter->fixupStatement($sql);
		$this->queriesExecuted++;
		return parent::executeUpdate($sql, $params, $types);
	}

	/**
	 * 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 $sql  The SQL query.
	 * @param array  $params The query parameters.
	 * @param array  $types  The parameter types.
	 *
	 * @return int The number of affected rows.
	 *
	 * @throws \Doctrine\DBAL\Exception
	 */
	public function executeStatement($sql, array $params = [], array $types = []): int {
		$sql = $this->replaceTablePrefix($sql);
		$sql = $this->adapter->fixupStatement($sql);
		$this->queriesExecuted++;
		return parent::executeStatement($sql, $params, $types);
	}

	/**
	 * 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 $seqName Name of the sequence object from which the ID should be returned.
	 * @return string the last inserted ID.
	 */
	public function lastInsertId($seqName = null) {
		if ($seqName) {
			$seqName = $this->replaceTablePrefix($seqName);
		}
		return $this->adapter->lastInsertId($seqName);
	}

	// internal use
	public function realLastInsertId($seqName = null) {
		return parent::lastInsertId($seqName);
	}

	/**
	 * Insert a row if the matching row does not exists. To accomplish proper race condition avoidance
	 * it is needed that there is also a unique constraint on the values. Then this method will
	 * catch the exception and return 0.
	 *
	 * @param string $table The table name (will replace *PREFIX* with the actual prefix)
	 * @param array $input data that should be inserted into the table  (column name => value)
	 * @param array|null $compare List of values that should be checked for "if not exists"
	 *				If this is null or an empty array, all keys of $input will be compared
	 *				Please note: text fields (clob) must not be used in the compare array
	 * @return int number of inserted rows
	 * @throws \Doctrine\DBAL\Exception
	 * @deprecated 15.0.0 - use unique index and "try { $db->insert() } catch (UniqueConstraintViolationException $e) {}" instead, because it is more reliable and does not have the risk for deadlocks - see https://github.com/nextcloud/server/pull/12371
	 */
	public function insertIfNotExist($table, $input, array $compare = null) {
		return $this->adapter->insertIfNotExist($table, $input, $compare);
	}

	public function insertIgnoreConflict(string $table, array $values) : int {
		return $this->adapter->insertIgnoreConflict($table, $values);
	}

	private function getType($value) {
		if (is_bool($value)) {
			return IQueryBuilder::PARAM_BOOL;
		} elseif (is_int($value)) {
			return IQueryBuilder::PARAM_INT;
		} else {
			return IQueryBuilder::PARAM_STR;
		}
	}

	/**
	 * Insert or update a row value
	 *
	 * @param string $table
	 * @param array $keys (column name => value)
	 * @param array $values (column name => value)
	 * @param array $updatePreconditionValues ensure values match preconditions (column name => value)
	 * @return int number of new rows
	 * @throws \Doctrine\DBAL\Exception
	 * @throws PreConditionNotMetException
	 */
	public function setValues($table, array $keys, array $values, array $updatePreconditionValues = []) {
		try {
			$insertQb = $this->getQueryBuilder();
			$insertQb->insert($table)
				->values(
					array_map(function ($value) use ($insertQb) {
						return $insertQb->createNamedParameter($value, $this->getType($value));
					}, array_merge($keys, $values))
				);
			return $insertQb->execute();

		} catch (NotNullConstraintViolationException $e) {
			throw $e;
		} catch (ConstraintViolationException $e) {
			// value already exists, try update
			$updateQb = $this->getQueryBuilder();
			$updateQb->update($table);
			foreach ($values as $name => $value) {
				$updateQb->set($name, $updateQb->createNamedParameter($value, $this->getType($value)));
			}
			$where = $updateQb->expr()->andX();
			$whereValues = array_merge($keys, $updatePreconditionValues);
			foreach ($whereValues as $name => $value) {
				if ($value === '') {
					$where->add($updateQb->expr()->emptyString(
						$name
					));
				} else {
					$where->add($updateQb->expr()->eq(
						$name,
						$updateQb->createNamedParameter($value, $this->getType($value)),
						$this->getType($value)
					));
				}
			}
			$updateQb->where($where);
			$affected = $updateQb->execute();

			if ($affected === 0 && !empty($updatePreconditionValues)) {

				throw new PreConditionNotMetException();
			}

			return 0;
		}
	}

	/**
	 * Create an exclusive read+write lock on a table
	 *
	 * @param string $tableName
	 * @throws \BadMethodCallException When trying to acquire a second lock
	 * @since 9.1.0
	 */
	public function lockTable($tableName) {
		if ($this->lockedTable !== null) {
			throw new \BadMethodCallException('Can not lock a new table until the previous lock is released.');
		}

		$tableName = $this->tablePrefix . $tableName;
		$this->lockedTable = $tableName;
		$this->adapter->lockTable($tableName);
	}

	/**
	 * Release a previous acquired lock again
	 *
	 * @since 9.1.0
	 */
	public function unlockTable() {
		$this->adapter->unlockTable();
		$this->lockedTable = null;
	}

	/**
	 * returns the error code and message as a string for logging
	 * works with DoctrineException
	 * @return string
	 */
	public function getError() {
		$msg = $this->errorCode() . ': ';
		$errorInfo = $this->errorInfo();
		if (!empty($errorInfo)) {
			$msg .= 'SQLSTATE = '.$errorInfo[0] . ', ';
			$msg .= 'Driver Code = '.$errorInfo[1] . ', ';
			$msg .= 'Driver Message = '.$errorInfo[2];
		}
		return $msg;
	}

	public function errorCode() {
		return -1;
	}

	public function errorInfo() {
		return [];
	}

	/**
	 * Drop a table from the database if it exists
	 *
	 * @param string $table table name without the prefix
	 */
	public function dropTable($table) {
		$table = $this->tablePrefix . trim($table);
		$schema = $this->getSchemaManager();
		if ($schema->tablesExist([$table])) {
			$schema->dropTable($table);
		}
	}

	/**
	 * Check if a table exists
	 *
	 * @param string $table table name without the prefix
	 * @return bool
	 */
	public function tableExists($table) {
		$table = $this->tablePrefix . trim($table);
		$schema = $this->getSchemaManager();
		return $schema->tablesExist([$table]);
	}

	// internal use
	/**
	 * @param string $statement
	 * @return string
	 */
	protected function replaceTablePrefix($statement) {
		return str_replace('*PREFIX*', $this->tablePrefix, $statement);
	}

	/**
	 * Check if a transaction is active
	 *
	 * @return bool
	 * @since 8.2.0
	 */
	public function inTransaction() {
		return $this->getTransactionNestingLevel() > 0;
	}

	/**
	 * Escape a parameter to be used in a LIKE query
	 *
	 * @param string $param
	 * @return string
	 */
	public function escapeLikeParameter($param) {
		return addcslashes($param, '\\_%');
	}

	/**
	 * Check whether or not the current database support 4byte wide unicode
	 *
	 * @return bool
	 * @since 11.0.0
	 */
	public function supports4ByteText() {
		if (!$this->getDatabasePlatform() instanceof MySQLPlatform) {
			return true;
		}
		return $this->getParams()['charset'] === 'utf8mb4';
	}


	/**
	 * Create the schema of the connected database
	 *
	 * @return Schema
	 */
	public function createSchema() {
		$schemaManager = new MDB2SchemaManager($this);
		$migrator = $schemaManager->getMigrator();
		return $migrator->createSchema();
	}

	/**
	 * Migrate the database to the given schema
	 *
	 * @param Schema $toSchema
	 */
	public function migrateToSchema(Schema $toSchema) {
		$schemaManager = new MDB2SchemaManager($this);
		$migrator = $schemaManager->getMigrator();
		$migrator->migrate($toSchema);
	}
}


1			<?php
2
3			declare(strict_types=1);
4
5			/**
6			* @copyright Copyright (c) 2016, ownCloud, Inc.
7			*
8			* @author Bart Visscher <[email protected]>
9			* @author Christoph Wurst <[email protected]>
10			* @author Joas Schilling <[email protected]>
11			* @author Julius Härtl <[email protected]>
12			* @author Morris Jobke <[email protected]>
13			* @author Ole Ostergaard <[email protected]>
14			* @author Ole Ostergaard <[email protected]>
15			* @author Philipp Schaffrath <[email protected]>
16			* @author Robin Appelman <[email protected]>
17			* @author Robin McCorkell <[email protected]>
18			* @author Roeland Jago Douma <[email protected]>
19			* @author Thomas Müller <[email protected]>
20			*
21			* @license AGPL-3.0
22			*
23			* This code is free software: you can redistribute it and/or modify
24			* it under the terms of the GNU Affero General Public License, version 3,
25			* as published by the Free Software Foundation.
26			*
27			* This program is distributed in the hope that it will be useful,
28			* but WITHOUT ANY WARRANTY; without even the implied warranty of
29			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30			* GNU Affero General Public License for more details.
31			*
32			* You should have received a copy of the GNU Affero General Public License, version 3,
33			* along with this program. If not, see <http://www.gnu.org/licenses/>
34			*
35			*/
36
37			namespace OC\DB;
38
39			use Doctrine\Common\EventManager;
40			use Doctrine\DBAL\Cache\QueryCacheProfile;
41			use Doctrine\DBAL\Configuration;
42			use Doctrine\DBAL\Driver;
43			use Doctrine\DBAL\Exception;
44			use Doctrine\DBAL\Exception\ConstraintViolationException;
45			use Doctrine\DBAL\Exception\NotNullConstraintViolationException;
46			use Doctrine\DBAL\Platforms\MySQLPlatform;
47			use Doctrine\DBAL\Result;
48			use Doctrine\DBAL\Schema\Schema;
49			use Doctrine\DBAL\Statement;
50			use OC\DB\QueryBuilder\QueryBuilder;
51			use OC\SystemConfig;
52			use OCP\DB\QueryBuilder\IQueryBuilder;
53			use OCP\ILogger;
54			use OCP\PreConditionNotMetException;
55
56			class Connection extends ReconnectWrapper {
57			/** @var string */
58			protected $tablePrefix;
59
60			/** @var \OC\DB\Adapter $adapter */
61			protected $adapter;
62
63			/** @var SystemConfig */
64			private $systemConfig;
65
66			/** @var ILogger */
67			private $logger;
68
69			protected $lockedTable = null;
70
71			/** @var int */
72			protected $queriesBuilt = 0;
73
74			/** @var int */
75			protected $queriesExecuted = 0;
76
77			public function connect() {
78			try {
79			return parent::connect();
80			} catch (Exception $e) {
81			// throw a new exception to prevent leaking info from the stacktrace
82			throw new Exception('Failed to connect to the database: ' . $e->getMessage(), $e->getCode());
83			}
84			}
85
86			public function getStats(): array {
87			return [
88			'built' => $this->queriesBuilt,
89			'executed' => $this->queriesExecuted,
90			];
91			}
92
93			/**
94			* Returns a QueryBuilder for the connection.
95			*/
96			public function getQueryBuilder(): IQueryBuilder {
97			$this->queriesBuilt++;
98			return new QueryBuilder(
99			new ConnectionAdapter($this),
100			$this->systemConfig,
101			$this->logger
102			);
103			}
104
105			/**
106			* Gets the QueryBuilder for the connection.
107			*
108			* @return \Doctrine\DBAL\Query\QueryBuilder
109			* @deprecated please use $this->getQueryBuilder() instead
110			*/
111			public function createQueryBuilder() {
112			$backtrace = $this->getCallerBacktrace();
113			\OC::$server->getLogger()->debug('Doctrine QueryBuilder retrieved in {backtrace}', ['app' => 'core', 'backtrace' => $backtrace]);
114			$this->queriesBuilt++;
115			return parent::createQueryBuilder();
116			}
117
118			/**
119			* Gets the ExpressionBuilder for the connection.
120			*
121			* @return \Doctrine\DBAL\Query\Expression\ExpressionBuilder
122			* @deprecated please use $this->getQueryBuilder()->expr() instead
123			*/
124			public function getExpressionBuilder() {
125			$backtrace = $this->getCallerBacktrace();
126			\OC::$server->getLogger()->debug('Doctrine ExpressionBuilder retrieved in {backtrace}', ['app' => 'core', 'backtrace' => $backtrace]);
127			$this->queriesBuilt++;
128			return parent::getExpressionBuilder();
129			}
130
131			/**
132			* Get the file and line that called the method where `getCallerBacktrace()` was used
133			*
134			* @return string
135			*/
136			protected function getCallerBacktrace() {
137			$traces = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 2);
138
139			// 0 is the method where we use `getCallerBacktrace`
140			// 1 is the target method which uses the method we want to log
141			if (isset($traces[1])) {
142			return $traces[1]['file'] . ':' . $traces[1]['line'];
143			}
144
145			return '';
146			}
147
148			/**
149			* @return string
150			*/
151			public function getPrefix() {
152			return $this->tablePrefix;
153			}
154
155			/**
156			* Initializes a new instance of the Connection class.
157			*
158			* @param array $params The connection parameters.
159			* @param \Doctrine\DBAL\Driver $driver
160			* @param \Doctrine\DBAL\Configuration $config
161			* @param \Doctrine\Common\EventManager $eventManager
162			* @throws \Exception
163			*/
164			public function __construct(array $params, Driver $driver, Configuration $config = null,
165			EventManager $eventManager = null) {
166			if (!isset($params['adapter'])) {
167			throw new \Exception('adapter not set');
168			}
169			if (!isset($params['tablePrefix'])) {
170			throw new \Exception('tablePrefix not set');
171			}
172			parent::__construct($params, $driver, $config, $eventManager);
173			$this->adapter = new $params['adapter']($this);
174			$this->tablePrefix = $params['tablePrefix'];
175
176			$this->systemConfig = \OC::$server->getSystemConfig();
177			$this->logger = \OC::$server->getLogger();
178			}
179
180			/**
181			* Prepares an SQL statement.
182			*
183			* @param string $statement The SQL statement to prepare.
184			* @param int $limit
185			* @param int $offset
186			* @return Statement The prepared statement.
187			*/
188			public function prepare($statement, $limit = null, $offset = null): Statement {
189			if ($limit === -1) {
190			$limit = null;
191			}
192			if (!is_null($limit)) {
193			$platform = $this->getDatabasePlatform();
194			$statement = $platform->modifyLimitQuery($statement, $limit, $offset);
195			}
196			$statement = $this->replaceTablePrefix($statement);
197			$statement = $this->adapter->fixupStatement($statement);
198
199			return parent::prepare($statement);
200			}
201
202			/**
203			* Executes an, optionally parametrized, SQL query.
204			*
205			* If the query is parametrized, a prepared statement is used.
206			* If an SQLLogger is configured, the execution is logged.
207			*
208			* @param string $sql The SQL query to execute.
209			* @param array $params The parameters to bind to the query, if any.
210			* @param array $types The types the previous parameters are in.
211			* @param \Doctrine\DBAL\Cache\QueryCacheProfile\|null $qcp The query cache profile, optional.
212			*
213			* @return Result The executed statement.
214			*
215			* @throws \Doctrine\DBAL\Exception
216			*/
217			public function executeQuery(string $sql, array $params = [], $types = [], QueryCacheProfile $qcp = null): Result {
218			$sql = $this->replaceTablePrefix($sql);
219			$sql = $this->adapter->fixupStatement($sql);
220			$this->queriesExecuted++;
221			return parent::executeQuery($sql, $params, $types, $qcp);
222			}
223
224			public function executeUpdate(string $sql, array $params = [], array $types = []): int {
225			$sql = $this->replaceTablePrefix($sql);
226			$sql = $this->adapter->fixupStatement($sql);
227			$this->queriesExecuted++;
228			return parent::executeUpdate($sql, $params, $types);
229			}
230
231			/**
232			* Executes an SQL INSERT/UPDATE/DELETE query with the given parameters
233			* and returns the number of affected rows.
234			*
235			* This method supports PDO binding types as well as DBAL mapping types.
236			*
237			* @param string $sql The SQL query.
238			* @param array $params The query parameters.
239			* @param array $types The parameter types.
240			*
241			* @return int The number of affected rows.
242			*
243			* @throws \Doctrine\DBAL\Exception
244			*/
245			public function executeStatement($sql, array $params = [], array $types = []): int {
246			$sql = $this->replaceTablePrefix($sql);
247			$sql = $this->adapter->fixupStatement($sql);
248			$this->queriesExecuted++;
249			return parent::executeStatement($sql, $params, $types);
250			}
251
252			/**
253			* Returns the ID of the last inserted row, or the last value from a sequence object,
254			* depending on the underlying driver.
255			*
256			* Note: This method may not return a meaningful or consistent result across different drivers,
257			* because the underlying database may not even support the notion of AUTO_INCREMENT/IDENTITY
258			* columns or sequences.
259			*
260			* @param string $seqName Name of the sequence object from which the ID should be returned.
261			* @return string the last inserted ID.
262			*/
263			public function lastInsertId($seqName = null) {
264			if ($seqName) {
265			$seqName = $this->replaceTablePrefix($seqName);
266			}
267			return $this->adapter->lastInsertId($seqName);
268			}
269
270			// internal use
271			public function realLastInsertId($seqName = null) {
272			return parent::lastInsertId($seqName);
273			}
274
275			/**
276			* Insert a row if the matching row does not exists. To accomplish proper race condition avoidance
277			* it is needed that there is also a unique constraint on the values. Then this method will
278			* catch the exception and return 0.
279			*
280			* @param string $table The table name (will replace PREFIX with the actual prefix)
281			* @param array $input data that should be inserted into the table (column name => value)
282			* @param array\|null $compare List of values that should be checked for "if not exists"
283			* If this is null or an empty array, all keys of $input will be compared
284			* Please note: text fields (clob) must not be used in the compare array
285			* @return int number of inserted rows
286			* @throws \Doctrine\DBAL\Exception
287			* @deprecated 15.0.0 - use unique index and "try { $db->insert() } catch (UniqueConstraintViolationException $e) {}" instead, because it is more reliable and does not have the risk for deadlocks - see https://github.com/nextcloud/server/pull/12371
288			*/
289			public function insertIfNotExist($table, $input, array $compare = null) {
290			return $this->adapter->insertIfNotExist($table, $input, $compare);
291			}
292
293			public function insertIgnoreConflict(string $table, array $values) : int {
294			return $this->adapter->insertIgnoreConflict($table, $values);
295			}
296
297			private function getType($value) {
298			if (is_bool($value)) {
299			return IQueryBuilder::PARAM_BOOL;
300			} elseif (is_int($value)) {
301			return IQueryBuilder::PARAM_INT;
302			} else {
303			return IQueryBuilder::PARAM_STR;
304			}
305			}
306
307			/**
308			* Insert or update a row value
309			*
310			* @param string $table
311			* @param array $keys (column name => value)
312			* @param array $values (column name => value)
313			* @param array $updatePreconditionValues ensure values match preconditions (column name => value)
314			* @return int number of new rows
315			* @throws \Doctrine\DBAL\Exception
316			* @throws PreConditionNotMetException
317			*/
318			public function setValues($table, array $keys, array $values, array $updatePreconditionValues = []) {
319			try {
320			$insertQb = $this->getQueryBuilder();
321			$insertQb->insert($table)
322			->values(
323			array_map(function ($value) use ($insertQb) {
324			return $insertQb->createNamedParameter($value, $this->getType($value));
325			}, array_merge($keys, $values))
326			);
327			return $insertQb->execute();
			0 ignored issues – show Bug Best Practice introduced 2021-01-08 14:13 UTC by Report Bug Copy Issue Report The expression `return $insertQb->execute()` returns the type `OC\DB\ResultAdapter` which is incompatible with the documented return type `integer`. Loading history...
328			} catch (NotNullConstraintViolationException $e) {
329			throw $e;
330			} catch (ConstraintViolationException $e) {
331			// value already exists, try update
332			$updateQb = $this->getQueryBuilder();
333			$updateQb->update($table);
334			foreach ($values as $name => $value) {
335			$updateQb->set($name, $updateQb->createNamedParameter($value, $this->getType($value)));
336			}
337			$where = $updateQb->expr()->andX();
338			$whereValues = array_merge($keys, $updatePreconditionValues);
339			foreach ($whereValues as $name => $value) {
340			if ($value === '') {
341			$where->add($updateQb->expr()->emptyString(
342			$name
343			));
344			} else {
345			$where->add($updateQb->expr()->eq(
346			$name,
347			$updateQb->createNamedParameter($value, $this->getType($value)),
348			$this->getType($value)
349			));
350			}
351			}
352			$updateQb->where($where);
353			$affected = $updateQb->execute();
354
355			if ($affected === 0 && !empty($updatePreconditionValues)) {
			0 ignored issues – show introduced 2020-06-09 09:22 UTC by Report Bug Copy Issue Report The condition `$affected === 0` is always `false`. Loading history...
356			throw new PreConditionNotMetException();
357			}
358
359			return 0;
360			}
361			}
362
363			/**
364			* Create an exclusive read+write lock on a table
365			*
366			* @param string $tableName
367			* @throws \BadMethodCallException When trying to acquire a second lock
368			* @since 9.1.0
369			*/
370			public function lockTable($tableName) {
371			if ($this->lockedTable !== null) {
372			throw new \BadMethodCallException('Can not lock a new table until the previous lock is released.');
373			}
374
375			$tableName = $this->tablePrefix . $tableName;
376			$this->lockedTable = $tableName;
377			$this->adapter->lockTable($tableName);
378			}
379
380			/**
381			* Release a previous acquired lock again
382			*
383			* @since 9.1.0
384			*/
385			public function unlockTable() {
386			$this->adapter->unlockTable();
387			$this->lockedTable = null;
388			}
389
390			/**
391			* returns the error code and message as a string for logging
392			* works with DoctrineException
393			* @return string
394			*/
395			public function getError() {
396			$msg = $this->errorCode() . ': ';
397			$errorInfo = $this->errorInfo();
398			if (!empty($errorInfo)) {
399			$msg .= 'SQLSTATE = '.$errorInfo[0] . ', ';
400			$msg .= 'Driver Code = '.$errorInfo[1] . ', ';
401			$msg .= 'Driver Message = '.$errorInfo[2];
402			}
403			return $msg;
404			}
405
406			public function errorCode() {
407			return -1;
408			}
409
410			public function errorInfo() {
411			return [];
412			}
413
414			/**
415			* Drop a table from the database if it exists
416			*
417			* @param string $table table name without the prefix
418			*/
419			public function dropTable($table) {
420			$table = $this->tablePrefix . trim($table);
421			$schema = $this->getSchemaManager();
422			if ($schema->tablesExist([$table])) {
423			$schema->dropTable($table);
424			}
425			}
426
427			/**
428			* Check if a table exists
429			*
430			* @param string $table table name without the prefix
431			* @return bool
432			*/
433			public function tableExists($table) {
434			$table = $this->tablePrefix . trim($table);
435			$schema = $this->getSchemaManager();
436			return $schema->tablesExist([$table]);
437			}
438
439			// internal use
440			/**
441			* @param string $statement
442			* @return string
443			*/
444			protected function replaceTablePrefix($statement) {
445			return str_replace('PREFIX', $this->tablePrefix, $statement);
446			}
447
448			/**
449			* Check if a transaction is active
450			*
451			* @return bool
452			* @since 8.2.0
453			*/
454			public function inTransaction() {
455			return $this->getTransactionNestingLevel() > 0;
456			}
457
458			/**
459			* Escape a parameter to be used in a LIKE query
460			*
461			* @param string $param
462			* @return string
463			*/
464			public function escapeLikeParameter($param) {
465			return addcslashes($param, '\\_%');
466			}
467
468			/**
469			* Check whether or not the current database support 4byte wide unicode
470			*
471			* @return bool
472			* @since 11.0.0
473			*/
474			public function supports4ByteText() {
475			if (!$this->getDatabasePlatform() instanceof MySQLPlatform) {
476			return true;
477			}
478			return $this->getParams()['charset'] === 'utf8mb4';
479			}
480
481
482			/**
483			* Create the schema of the connected database
484			*
485			* @return Schema
486			*/
487			public function createSchema() {
488			$schemaManager = new MDB2SchemaManager($this);
489			$migrator = $schemaManager->getMigrator();
490			return $migrator->createSchema();
491			}
492
493			/**
494			* Migrate the database to the given schema
495			*
496			* @param Schema $toSchema
497			*/
498			public function migrateToSchema(Schema $toSchema) {
499			$schemaManager = new MDB2SchemaManager($this);
500			$migrator = $schemaManager->getMigrator();
501			$migrator->migrate($toSchema);
502			}
503			}
504

nextcloud / server

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