PDOConnection::__construct() - Code Metrics - Inspection of "Fix last insert ID consistency across drivers" - doctrine/dbal - Measure and Improve Code Quality continuously with Scrutinizer

Failed Conditions
Pull Request — master (#3074)

by Sergei
created 2018-04-17 16:30 UTC
PDOConnection::__construct() A

↳ Parent: PDOConnection
Complexity

Conditions	2
Paths	4
Size

Total Lines	11
Code Lines	7
Duplication

Lines	0
Ratio	0 %
Code Coverage

Tests	6
CRAP Score	2
Importance

Changes
Metric	Value
dl	0
loc	11
ccs	6
cts	6
cp	1
rs	9.4285
c	0
b	0
f	0
cc	2
eloc	7
nc	4
nop	4
crap	2
<?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\Driver;

use Doctrine\DBAL\ParameterType;
use PDO;
use function func_get_args;

/**
 * PDO implementation of the Connection interface.
 * Used by all PDO-based drivers.
 *
 * @since 2.0
 */
class PDOConnection extends PDO implements Connection, ServerInfoAwareConnection
{
    /** @var LastInsertId */
    private $lastInsertId;

    /**
     * @param string      $dsn
     * @param string|null $user
     * @param string|null $password
     * @param array|null  $options
     *
     * @throws PDOException in case of an error.
     */
    public function __construct($dsn, $user = null, $password = null, array $options = null)
    {
        try {
            parent::__construct($dsn, $user, $password, $options);
            $this->setAttribute(PDO::ATTR_STATEMENT_CLASS, ['Doctrine\DBAL\Driver\PDOStatement', [$this]]);
            $this->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
        } catch (\PDOException $exception) {
            throw new PDOException($exception);
        }

        $this->lastInsertId = new LastInsertId();
    }

    /**
     * {@inheritdoc}
     */
    public function exec($statement)
    {
        try {
            $result = parent::exec($statement);
        } catch (\PDOException $exception) {
            throw new PDOException($exception);
        }

        $this->trackLastInsertId();

        return $result;
    }

    /**
     * {@inheritdoc}
     */
    public function getServerVersion()
    {
        return PDO::getAttribute(PDO::ATTR_SERVER_VERSION);
        return PDO::/** @scrutinizer ignore-call */ getAttribute(PDO::ATTR_SERVER_VERSION);
    }

    /**
     * {@inheritdoc}
     */
    public function prepare($prepareString, $driverOptions = [])
    {
        try {
            return parent::prepare($prepareString, $driverOptions);
interface HasName {
    /** @return string */
    public function getName();
}

class Name {
    public $name;
}

class User implements HasName {
    /** @return string|Name */
    public function getName() {
        return new Name('foo'); // This is a violation of the ``HasName`` interface
                                // which only allows a string value to be returned.
    }
}
        } catch (\PDOException $exception) {
            throw new PDOException($exception);
        }
    }

    /**
     * {@inheritdoc}
     */
    public function query()
    {
        try {
            /** @var PDOStatement $stmt */
            $stmt = parent::query(...func_get_args());
            $stmt = parent::query(/** @scrutinizer ignore-type */ ...func_get_args());

            $this->trackLastInsertId();

            return $stmt;
        } catch (\PDOException $exception) {
            throw new PDOException($exception);
        }
    }

    /**
     * {@inheritdoc}
     */
    public function quote($input, $type = ParameterType::STRING)
    {
        return parent::quote($input, $type);
    }

    /**
     * {@inheritdoc}
     */
    public function lastInsertId($name = null)
    {
        if ($name === null) {
            return $this->lastInsertId->get();
        }

        try {
            return $this->fetchLastInsertId($name);
        } catch (\PDOException $exception) {
            return 0;
        }
    }

    /**
     * {@inheritdoc}
     */
    public function requiresQueryForServerVersion()
    {
        return false;
    }

    /**
     * Tracks the last insert ID at the current state.
     *
     * If this PDO driver is not able to fetch the last insert ID for identity columns
     * without influencing connection state or transaction state, this is a noop method.
     *
     * @internal this method is only supposed to be used in DBAL internals
     *
     * @throws \PDOException
     */
    public function trackLastInsertId() : void
    {
        // We need to avoid unnecessary exception generation for drivers not supporting this feature,
        // by temporarily disabling exception mode.
        $originalErrorMode = $this->getAttribute(\PDO::ATTR_ERRMODE);

        $this->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_SILENT);

        try {
            $lastInsertId = $this->fetchLastInsertId(null);
        } finally {
            // Reactivate exception mode.
            $this->setAttribute(\PDO::ATTR_ERRMODE, $originalErrorMode);
        }

        if ($lastInsertId === null) {

            // In case this driver implementation does not support this feature
            // or an error occurred while retrieving the last insert ID, there is nothing to track here.
            return;
        }

        $this->lastInsertId->register($lastInsertId);
    }

    /**
     * Fetches the last insert ID generated by this connection.
     *
     * This method queries the database connection for the last insert ID.
     *
     * @param string|null $sequenceName The name of the sequence to retrieve the last insert ID from,
     *                                  if not given the overall last insert ID is returned.
     *
     * @return int The last insert ID or 0 in case the last insert ID generated on this connection is unknown.
     *
     * @throws \PDOException
     */
    protected function fetchLastInsertId(?string $sequenceName) : int
    {
        return (int) parent::lastInsertId($sequenceName);
    }
}

doctrine / dbal

Pull Request — master (#3074)

PDOConnection::__construct() A

Complexity

Size

Duplication

Code Coverage

Importance

Duplication Side-by-Side

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