Connection::getDatabaseVersionString() - Code Metrics - Inspection of "Fix import of federated shares" - owncloud/core - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#29676)

by Tom

created 2017-11-24 11:44 UTC

Connection::getDatabaseVersionString() A

↳ Parent: Connection

Complexity

Conditions	3
Paths	2

Size

Total Lines	12
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	3
eloc	5
nc	2
nop	0
dl	0
loc	12
rs	9.4285
c	0
b	0
f	0

<?php
/**
 * @author Bart Visscher <[email protected]>
 * @author Joas Schilling <[email protected]>
 * @author Morris Jobke <[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]>
 *
 * @copyright Copyright (c) 2017, ownCloud GmbH
 * @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\DBAL\DBALException;
use Doctrine\DBAL\Driver;
use Doctrine\DBAL\Configuration;
use Doctrine\DBAL\Cache\QueryCacheProfile;
use Doctrine\Common\EventManager;
use Doctrine\DBAL\Driver\ServerInfoAwareConnection;
use Doctrine\DBAL\Exception\ConstraintViolationException;
use Doctrine\DBAL\Platforms\MySqlPlatform;
use Doctrine\DBAL\Schema\Schema;
use OC\DB\QueryBuilder\QueryBuilder;
use OCP\DB\QueryBuilder\IQueryBuilder;
use OCP\IDBConnection;
use OCP\PreConditionNotMetException;
use OCP\Util;

class Connection extends \Doctrine\DBAL\Connection implements IDBConnection {
	/**
	 * @var string $tablePrefix
	 */
	protected $tablePrefix;

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

	protected $lockedTable = null;

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

	/**
	 * Returns a QueryBuilder for the connection.
	 *
	 * @return \OCP\DB\QueryBuilder\IQueryBuilder
	 */
	public function getQueryBuilder() {
		return new QueryBuilder($this);
	}

	/**
	 * 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]);
		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]);
		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'];

		parent::setTransactionIsolation(parent::TRANSACTION_READ_COMMITTED);
class Daddy
{
    protected function getFirstName()
    {
        return "Eidur";
    }

    protected function getSurName()
    {
        return "Gudjohnsen";
    }
}

class Son
{
    public function getFirstName()
    {
        return parent::getSurname();
    }
}
	}

	/**
	 * Prepares an SQL statement.
	 *
	 * @param string $statement The SQL statement to prepare.
	 * @param int $limit
	 * @param int $offset
	 * @return \Doctrine\DBAL\Driver\Statement The prepared statement.
	 */
	public function prepare( $statement, $limit=null, $offset=null ) {
		if ($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                                      $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)
	{
		$query = $this->replaceTablePrefix($query);
		$query = $this->adapter->fixupStatement($query);
		return parent::executeQuery($query, $params, $types, $qcp);
	}

	/**
	 * 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 = [])
	{
		$query = $this->replaceTablePrefix($query);
		$query = $this->adapter->fixupStatement($query);
		return parent::executeUpdate($query, $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 $seqName Name of the sequence object from which the ID should be returned.
	 * @return string A string representation of the last inserted ID.
	 */
	public function lastInsertId($seqName = null) {
		if ($seqName) {
''   == false // true
''   == null  // true
'ab' == false // false
'ab' == null  // false

// It is often better to use strict comparison
'' === false // false
'' === null  // false
			$seqName = $this->replaceTablePrefix($seqName);
		}
		return $this->adapter->lastInsertId($seqName);
	}

	// internal use
	public function realLastInsertId($seqName = null) {
		return parent::lastInsertId($seqName);
class Daddy
{
    protected function getFirstName()
    {
        return "Eidur";
    }

    protected function getSurName()
    {
        return "Gudjohnsen";
    }
}

class Son
{
    public function getFirstName()
    {
        return parent::getSurname();
    }
}
	}

	/**
	 * Insert a row if the matching row does not exists.
	 *
	 * @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 $input will be compared
	 *				Please note: text fields (clob) must not be used in the compare array
	 * @return int number of inserted rows
	 * @throws \Doctrine\DBAL\DBALException
	 */
	public function insertIfNotExist($table, $input, array $compare = null) {
		return $this->adapter->insertIfNotExist($table, $input, $compare);
	}

	/**
	 * Attempt to update a row, else insert a new one
	 *
	 * @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 $input will be compared
	 *				Please note: text fields (clob) must not be used in the compare array
	 * @return int number of affected rows
	 * @throws \Doctrine\DBAL\DBALException
	 */
	public function upsert($table, $input, array $compare = null) {
		return $this->adapter->upsert($table, $input, $compare);

	}

	private function getType($value) {
		if (is_bool($value)) {
			return IQueryBuilder::PARAM_BOOL;
		} else if (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 $updatePreconditionValues ensure values match preconditions (column name => value)
	 * @return int number of new rows
	 * @throws \Doctrine\DBAL\DBALException
	 * @throws PreConditionNotMetException
	 */
	public function setValues($table, array $keys, array $values, array $updatePreconditionValues = []) {
		// Try to insert whole record into the table ($toInsert) if predicate NOT EXISTS ($compare) is satisfied
		$toInsert = array_merge($keys, $values);
		$compare = array_keys($keys);
		$tableName = $this->tablePrefix . $table;
		$affected = $this->adapter->insertIfNotExist($tableName, $toInsert, $compare);

		if ($affected === 0) {
			// 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) {
				$where->add($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 $affected;
	}

	/**
	 * 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 = $this->errorInfo();
		if (is_array($errorInfo)) {
			$msg .= 'SQLSTATE = '.$errorInfo[0] . ', ';
			$msg .= 'Driver Code = '.$errorInfo[1] . ', ';
			$msg .= 'Driver Message = '.$errorInfo[2];
		}
		return $msg;
	}

	/**
	 * 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;
	}

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

	/**
	 * 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);
	}

	/**
	 * Are 4-byte characters allowed or only 3-byte
	 *
	 * @return bool
	 * @since 10.0
	 */
	public function allows4ByteCharacters() {
		if (!$this->getDatabasePlatform() instanceof MySqlPlatform) {
			return true;
		}
		if ($this->getParams()['charset'] === 'utf8mb4') {
			return true;
		}
		return false;
	}

	/**
	 * 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 null|string
	 */
	public function getDatabaseVersionString()
	{
		// Automatic platform version detection.
		if ($this->_conn instanceof ServerInfoAwareConnection &&
			! $this->_conn->requiresQueryForServerVersion()
		) {
			return $this->_conn->getServerVersion();
		}

		// Unable to detect platform version.
		return null;
	}
}


1		<?php
2		/**
3		* @author Bart Visscher <[email protected]>
4		* @author Joas Schilling <[email protected]>
5		* @author Morris Jobke <[email protected]>
6		* @author Philipp Schaffrath <[email protected]>
7		* @author Robin Appelman <[email protected]>
8		* @author Robin McCorkell <[email protected]>
9		* @author Roeland Jago Douma <[email protected]>
10		* @author Thomas Müller <[email protected]>
11		*
12		* @copyright Copyright (c) 2017, ownCloud GmbH
13		* @license AGPL-3.0
14		*
15		* This code is free software: you can redistribute it and/or modify
16		* it under the terms of the GNU Affero General Public License, version 3,
17		* as published by the Free Software Foundation.
18		*
19		* This program is distributed in the hope that it will be useful,
20		* but WITHOUT ANY WARRANTY; without even the implied warranty of
21		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22		* GNU Affero General Public License for more details.
23		*
24		* You should have received a copy of the GNU Affero General Public License, version 3,
25		* along with this program. If not, see <http://www.gnu.org/licenses/>
26		*
27		*/
28
29		namespace OC\DB;
30
31		use Doctrine\DBAL\DBALException;
32		use Doctrine\DBAL\Driver;
33		use Doctrine\DBAL\Configuration;
34		use Doctrine\DBAL\Cache\QueryCacheProfile;
35		use Doctrine\Common\EventManager;
36		use Doctrine\DBAL\Driver\ServerInfoAwareConnection;
37		use Doctrine\DBAL\Exception\ConstraintViolationException;
38		use Doctrine\DBAL\Platforms\MySqlPlatform;
39		use Doctrine\DBAL\Schema\Schema;
40		use OC\DB\QueryBuilder\QueryBuilder;
41		use OCP\DB\QueryBuilder\IQueryBuilder;
42		use OCP\IDBConnection;
43		use OCP\PreConditionNotMetException;
44		use OCP\Util;
45
46		class Connection extends \Doctrine\DBAL\Connection implements IDBConnection {
47		/**
48		* @var string $tablePrefix
49		*/
50		protected $tablePrefix;
51
52		/**
53		* @var \OC\DB\Adapter $adapter
54		*/
55		protected $adapter;
56
57		protected $lockedTable = null;
58
59		public function connect() {
60		try {
61		return parent::connect();
62		} catch (DBALException $e) {
63		// throw a new exception to prevent leaking info from the stacktrace
64		throw new DBALException('Failed to connect to the database: ' . $e->getMessage(), $e->getCode());
65		}
66		}
67
68		/**
69		* Returns a QueryBuilder for the connection.
70		*
71		* @return \OCP\DB\QueryBuilder\IQueryBuilder
72		*/
73		public function getQueryBuilder() {
74		return new QueryBuilder($this);
75		}
76
77		/**
78		* Gets the QueryBuilder for the connection.
79		*
80		* @return \Doctrine\DBAL\Query\QueryBuilder
81		* @deprecated please use $this->getQueryBuilder() instead
82		*/
83		public function createQueryBuilder() {
84		$backtrace = $this->getCallerBacktrace();
85		\OC::$server->getLogger()->debug('Doctrine QueryBuilder retrieved in {backtrace}', ['app' => 'core', 'backtrace' => $backtrace]);
86		return parent::createQueryBuilder();
87		}
88
89		/**
90		* Gets the ExpressionBuilder for the connection.
91		*
92		* @return \Doctrine\DBAL\Query\Expression\ExpressionBuilder
93		* @deprecated please use $this->getQueryBuilder()->expr() instead
94		*/
95		public function getExpressionBuilder() {
96		$backtrace = $this->getCallerBacktrace();
97		\OC::$server->getLogger()->debug('Doctrine ExpressionBuilder retrieved in {backtrace}', ['app' => 'core', 'backtrace' => $backtrace]);
98		return parent::getExpressionBuilder();
99		}
100
101		/**
102		* Get the file and line that called the method where `getCallerBacktrace()` was used
103		*
104		* @return string
105		*/
106		protected function getCallerBacktrace() {
107		$traces = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 2);
108
109		// 0 is the method where we use `getCallerBacktrace`
110		// 1 is the target method which uses the method we want to log
111		if (isset($traces[1])) {
112		return $traces[1]['file'] . ':' . $traces[1]['line'];
113		}
114
115		return '';
116		}
117
118		/**
119		* @return string
120		*/
121		public function getPrefix() {
122		return $this->tablePrefix;
123		}
124
125		/**
126		* Initializes a new instance of the Connection class.
127		*
128		* @param array $params The connection parameters.
129		* @param \Doctrine\DBAL\Driver $driver
130		* @param \Doctrine\DBAL\Configuration $config
131		* @param \Doctrine\Common\EventManager $eventManager
132		* @throws \Exception
133		*/
134		public function __construct(array $params, Driver $driver, Configuration $config = null,
135		EventManager $eventManager = null)
136		{
137		if (!isset($params['adapter'])) {
138		throw new \Exception('adapter not set');
139		}
140		if (!isset($params['tablePrefix'])) {
141		throw new \Exception('tablePrefix not set');
142		}
143		parent::__construct($params, $driver, $config, $eventManager);
144		$this->adapter = new $params['adapter']($this);
145		$this->tablePrefix = $params['tablePrefix'];
146
147		parent::setTransactionIsolation(parent::TRANSACTION_READ_COMMITTED);
		0 ignored issues – show Comprehensibility Bug introduced 2015-11-21 07:38 UTC by Report Bug Copy Issue Report It seems like you call parent on a different method (`setTransactionIsolation()` instead of `__construct()`). Are you sure this is correct? If so, you might want to change this to `$this->setTransactionIsolation()`. This check looks for a call to a parent method whose name is different than the method from which it is called. Consider the following code: class Daddy { protected function getFirstName() { return "Eidur"; } protected function getSurName() { return "Gudjohnsen"; } } class Son { public function getFirstName() { return parent::getSurname(); } } The `getFirstName()` method in the `Son` calls the wrong method in the parent class. Loading history...
148		}
149
150		/**
151		* Prepares an SQL statement.
152		*
153		* @param string $statement The SQL statement to prepare.
154		* @param int $limit
155		* @param int $offset
156		* @return \Doctrine\DBAL\Driver\Statement The prepared statement.
157		*/
158		public function prepare( $statement, $limit=null, $offset=null ) {
159		if ($limit === -1) {
160		$limit = null;
161		}
162		if (!is_null($limit)) {
163		$platform = $this->getDatabasePlatform();
164		$statement = $platform->modifyLimitQuery($statement, $limit, $offset);
165		}
166		$statement = $this->replaceTablePrefix($statement);
167		$statement = $this->adapter->fixupStatement($statement);
168
169		return parent::prepare($statement);
170		}
171
172		/**
173		* Executes an, optionally parametrized, SQL query.
174		*
175		* If the query is parametrized, a prepared statement is used.
176		* If an SQLLogger is configured, the execution is logged.
177		*
178		* @param string $query The SQL query to execute.
179		* @param array $params The parameters to bind to the query, if any.
180		* @param array $types The types the previous parameters are in.
181		* @param \Doctrine\DBAL\Cache\QueryCacheProfile\|null $qcp The query cache profile, optional.
182		*
183		* @return \Doctrine\DBAL\Driver\Statement The executed statement.
184		*
185		* @throws \Doctrine\DBAL\DBALException
186		*/
187		public function executeQuery($query, array $params = [], $types = [], QueryCacheProfile $qcp = null)
188		{
189		$query = $this->replaceTablePrefix($query);
190		$query = $this->adapter->fixupStatement($query);
191		return parent::executeQuery($query, $params, $types, $qcp);
192		}
193
194		/**
195		* Executes an SQL INSERT/UPDATE/DELETE query with the given parameters
196		* and returns the number of affected rows.
197		*
198		* This method supports PDO binding types as well as DBAL mapping types.
199		*
200		* @param string $query The SQL query.
201		* @param array $params The query parameters.
202		* @param array $types The parameter types.
203		*
204		* @return integer The number of affected rows.
205		*
206		* @throws \Doctrine\DBAL\DBALException
207		*/
208		public function executeUpdate($query, array $params = [], array $types = [])
209		{
210		$query = $this->replaceTablePrefix($query);
211		$query = $this->adapter->fixupStatement($query);
212		return parent::executeUpdate($query, $params, $types);
213		}
214
215		/**
216		* Returns the ID of the last inserted row, or the last value from a sequence object,
217		* depending on the underlying driver.
218		*
219		* Note: This method may not return a meaningful or consistent result across different drivers,
220		* because the underlying database may not even support the notion of AUTO_INCREMENT/IDENTITY
221		* columns or sequences.
222		*
223		* @param string $seqName Name of the sequence object from which the ID should be returned.
224		* @return string A string representation of the last inserted ID.
225		*/
226		public function lastInsertId($seqName = null) {
227		if ($seqName) {
		0 ignored issues – show Bug Best Practice introduced 2016-04-15 18:08 UTC by Report Bug Copy Issue Report The expression `$seqName` of type `string\|null` is loosely compared to `true`; this is ambiguous if the string can be empty. You might want to explicitly use `!== null` instead. In PHP, under loose comparison (like `==`, or `!=`, or `switch` conditions), values of different types might be equal. For `string` values, the empty string `''` is a special case, in particular the following results might be unexpected: '' == false // true '' == null // true 'ab' == false // false 'ab' == null // false // It is often better to use strict comparison '' === false // false '' === null // false Loading history...
228		$seqName = $this->replaceTablePrefix($seqName);
229		}
230		return $this->adapter->lastInsertId($seqName);
231		}
232
233		// internal use
234		public function realLastInsertId($seqName = null) {
235		return parent::lastInsertId($seqName);
		0 ignored issues – show Comprehensibility Bug introduced 2016-04-15 18:08 UTC by Report Bug Copy Issue Report It seems like you call parent on a different method (`lastInsertId()` instead of `realLastInsertId()`). Are you sure this is correct? If so, you might want to change this to `$this->lastInsertId()`. This check looks for a call to a parent method whose name is different than the method from which it is called. Consider the following code: class Daddy { protected function getFirstName() { return "Eidur"; } protected function getSurName() { return "Gudjohnsen"; } } class Son { public function getFirstName() { return parent::getSurname(); } } The `getFirstName()` method in the `Son` calls the wrong method in the parent class. Loading history...
236		}
237
238		/**
239		* Insert a row if the matching row does not exists.
240		*
241		* @param string $table The table name (will replace PREFIX with the actual prefix)
242		* @param array $input data that should be inserted into the table (column name => value)
243		* @param array\|null $compare List of values that should be checked for "if not exists"
244		* If this is null or an empty array, all keys of $input will be compared
245		* Please note: text fields (clob) must not be used in the compare array
246		* @return int number of inserted rows
247		* @throws \Doctrine\DBAL\DBALException
248		*/
249		public function insertIfNotExist($table, $input, array $compare = null) {
250		return $this->adapter->insertIfNotExist($table, $input, $compare);
251		}
252
253		/**
254		* Attempt to update a row, else insert a new one
255		*
256		* @param string $table The table name (will replace PREFIX with the actual prefix)
257		* @param array $input data that should be inserted into the table (column name => value)
258		* @param array\|null $compare List of values that should be checked for "if not exists"
259		* If this is null or an empty array, all keys of $input will be compared
260		* Please note: text fields (clob) must not be used in the compare array
261		* @return int number of affected rows
262		* @throws \Doctrine\DBAL\DBALException
263		*/
264		public function upsert($table, $input, array $compare = null) {
265		return $this->adapter->upsert($table, $input, $compare);
		0 ignored issues – show Bug Compatibility introduced 2017-10-17 09:23 UTC by Report Bug Copy Issue Report The expression `$this->adapter->upsert($table, $input, $compare);` of type `Doctrine\DBAL\Driver\Statement\|integer` adds the type `Doctrine\DBAL\Driver\Statement` to the return on line 265 which is incompatible with the return type declared by the interface `OCP\IDBConnection::upsert` of type `integer`. Loading history...
266		}
267
268		private function getType($value) {
269		if (is_bool($value)) {
270		return IQueryBuilder::PARAM_BOOL;
271		} else if (is_int($value)) {
272		return IQueryBuilder::PARAM_INT;
273		} else {
274		return IQueryBuilder::PARAM_STR;
275		}
276		}
277
278		/**
279		* Insert or update a row value.
280		*
281		* @param string $table
282		* @param array $keys (column name => value)
283		* @param array $values (column name => value)
284		* @param array $updatePreconditionValues ensure values match preconditions (column name => value)
285		* @return int number of new rows
286		* @throws \Doctrine\DBAL\DBALException
287		* @throws PreConditionNotMetException
288		*/
289		public function setValues($table, array $keys, array $values, array $updatePreconditionValues = []) {
290		// Try to insert whole record into the table ($toInsert) if predicate NOT EXISTS ($compare) is satisfied
291		$toInsert = array_merge($keys, $values);
292		$compare = array_keys($keys);
293		$tableName = $this->tablePrefix . $table;
294		$affected = $this->adapter->insertIfNotExist($tableName, $toInsert, $compare);
295
296		if ($affected === 0) {
297		// value already exists, try update
298		$updateQb = $this->getQueryBuilder();
299		$updateQb->update($table);
300		foreach ($values as $name => $value) {
301		$updateQb->set($name, $updateQb->createNamedParameter($value, $this->getType($value)));
302		}
303		$where = $updateQb->expr()->andX();
304		$whereValues = array_merge($keys, $updatePreconditionValues);
305		foreach ($whereValues as $name => $value) {
306		$where->add($updateQb->expr()->eq(
307		$name,
308		$updateQb->createNamedParameter($value, $this->getType($value)),
309		$this->getType($value)
310		));
311		}
312		$updateQb->where($where);
313		$affected = $updateQb->execute();
		0 ignored issues – show Bug Compatibility introduced 2017-04-06 12:06 UTC by Report Bug Copy Issue Report The expression `$updateQb->execute();` of type `Doctrine\DBAL\Driver\Statement\|integer` adds the type `Doctrine\DBAL\Driver\Statement` to the return on line 321 which is incompatible with the return type declared by the interface `OCP\IDBConnection::setValues` of type `integer`. Loading history...
314
315		if ($affected === 0 && !empty($updatePreconditionValues)) {
316		throw new PreConditionNotMetException();
317		}
318
319		}
320
321		return $affected;
322		}
323
324		/**
325		* Create an exclusive read+write lock on a table
326		*
327		* @param string $tableName
328		* @throws \BadMethodCallException When trying to acquire a second lock
329		* @since 9.1.0
330		*/
331		public function lockTable($tableName) {
332		if ($this->lockedTable !== null) {
333		throw new \BadMethodCallException('Can not lock a new table until the previous lock is released.');
334		}
335
336		$tableName = $this->tablePrefix . $tableName;
337		$this->lockedTable = $tableName;
338		$this->adapter->lockTable($tableName);
339		}
340
341		/**
342		* Release a previous acquired lock again
343		*
344		* @since 9.1.0
345		*/
346		public function unlockTable() {
347		$this->adapter->unlockTable();
348		$this->lockedTable = null;
349		}
350
351		/**
352		* returns the error code and message as a string for logging
353		* works with DoctrineException
354		* @return string
355		*/
356		public function getError() {
357		$msg = $this->errorCode() . ': ';
358		$errorInfo = $this->errorInfo();
359		if (is_array($errorInfo)) {
360		$msg .= 'SQLSTATE = '.$errorInfo[0] . ', ';
361		$msg .= 'Driver Code = '.$errorInfo[1] . ', ';
362		$msg .= 'Driver Message = '.$errorInfo[2];
363		}
364		return $msg;
365		}
366
367		/**
368		* Drop a table from the database if it exists
369		*
370		* @param string $table table name without the prefix
371		*/
372	View Code Duplication	public function dropTable($table) {
373		$table = $this->tablePrefix . trim($table);
374		$schema = $this->getSchemaManager();
375		if($schema->tablesExist([$table])) {
376		$schema->dropTable($table);
377		}
378		}
379
380		/**
381		* Check if a table exists
382		*
383		* @param string $table table name without the prefix
384		* @return bool
385		*/
386		public function tableExists($table){
387		$table = $this->tablePrefix . trim($table);
388		$schema = $this->getSchemaManager();
389		return $schema->tablesExist([$table]);
390		}
391
392		// internal use
393		/**
394		* @param string $statement
395		* @return string
396		*/
397		protected function replaceTablePrefix($statement) {
398		return str_replace( 'PREFIX', $this->tablePrefix, $statement );
399		}
400
401		/**
402		* Check if a transaction is active
403		*
404		* @return bool
405		* @since 8.2.0
406		*/
407		public function inTransaction() {
408		return $this->getTransactionNestingLevel() > 0;
409		}
410
411		/**
412		* Espace a parameter to be used in a LIKE query
413		*
414		* @param string $param
415		* @return string
416		*/
417		public function escapeLikeParameter($param) {
418		return addcslashes($param, '\\_%');
419		}
420
421		/**
422		* Create the schema of the connected database
423		*
424		* @return Schema
425		*/
426		public function createSchema() {
427		$schemaManager = new MDB2SchemaManager($this);
428		$migrator = $schemaManager->getMigrator();
429		return $migrator->createSchema();
430		}
431
432		/**
433		* Migrate the database to the given schema
434		*
435		* @param Schema $toSchema
436		*/
437		public function migrateToSchema(Schema $toSchema) {
438		$schemaManager = new MDB2SchemaManager($this);
439		$migrator = $schemaManager->getMigrator();
440		$migrator->migrate($toSchema);
441		}
442
443		/**
444		* Are 4-byte characters allowed or only 3-byte
445		*
446		* @return bool
447		* @since 10.0
448		*/
449		public function allows4ByteCharacters() {
450		if (!$this->getDatabasePlatform() instanceof MySqlPlatform) {
451		return true;
452		}
453		if ($this->getParams()['charset'] === 'utf8mb4') {
454		return true;
455		}
456		return false;
457		}
458
459		/**
460		* Returns the version of the related platform if applicable.
461		*
462		* Returns null if either the driver is not capable to create version
463		* specific platform instances, no explicit server version was specified
464		* or the underlying driver connection cannot determine the platform
465		* version without having to query it (performance reasons).
466		*
467		* @return null\|string
468		*/
469		public function getDatabaseVersionString()
470		{
471		// Automatic platform version detection.
472		if ($this->_conn instanceof ServerInfoAwareConnection &&
473		! $this->_conn->requiresQueryForServerVersion()
474		) {
475		return $this->_conn->getServerVersion();
476		}
477
478		// Unable to detect platform version.
479		return null;
480		}
481		}
482

owncloud / core

Pull Request — master (#29676)

Connection::getDatabaseVersionString() A

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