SQLSrvConnection::getSequenceNumber() - Code Metrics - Inspection of "[WIP] [3.0] Extract getSequenceNumber() from lastI..." - doctrine/dbal - Measure and Improve Code Quality continuously with Scrutinizer

Failed Conditions

Pull Request — develop (#3368)

by Benjamin

created 2018-11-30 12:56 UTC

SQLSrvConnection::getSequenceNumber() A

↳ Parent: SQLSrvConnection

Complexity

Conditions	2
Paths	2

Size

Total Lines	12
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	7
CRAP Score	2.0438

Importance

Changes

Metric	Value
eloc	6
dl	0
loc	12
ccs	7
cts	9
cp	0.7778
rs	10
c	0
b	0
f	0
cc	2
nc	2
nop	1
crap	2.0438

<?php

namespace Doctrine\DBAL\Driver\SQLSrv;

use Doctrine\DBAL\Driver\Connection;
use Doctrine\DBAL\Driver\DriverException;
use Doctrine\DBAL\Driver\ResultStatement;
use Doctrine\DBAL\Driver\ServerInfoAwareConnection;
use Doctrine\DBAL\Driver\Statement as DriverStatement;
use const SQLSRV_ERR_ERRORS;
use function rtrim;
use function sqlsrv_begin_transaction;
use function sqlsrv_commit;
use function sqlsrv_configure;
use function sqlsrv_connect;
use function sqlsrv_errors;
use function sqlsrv_query;
use function sqlsrv_rollback;
use function sqlsrv_rows_affected;
use function sqlsrv_server_info;
use function str_replace;

/**
 * SQL Server implementation for the Connection interface.
 */
class SQLSrvConnection implements Connection, ServerInfoAwareConnection
{
    /** @var resource */
    protected $conn;

    /** @var LastInsertId */
    protected $lastInsertId;

    /**
     * @param string  $serverName
     * @param mixed[] $connectionOptions
     *
     * @throws DriverException
     */
    public function __construct($serverName, $connectionOptions)
    {
        if (! sqlsrv_configure('WarningsReturnAsErrors', 0)) {
            throw self::exceptionFromSqlSrvErrors();
        }

        $this->conn = sqlsrv_connect($serverName, $connectionOptions);
class Id
{
    public $id;

    public function __construct($id)
    {
        $this->id = $id;
    }

}

class Account
{
    /** @var  Id $id */
    public $id;
}

$account_id = false;

if (starsAreRight()) {
    $account_id = new Id(42);
}

$account = new Account();
if ($account instanceof Id)
{
    $account->id = $account_id;
}
        if (! $this->conn) {
            throw self::exceptionFromSqlSrvErrors();
        }
        $this->lastInsertId = new LastInsertId();
    }

    /**
     * {@inheritdoc}
     */
    public function getServerVersion()
    {
        $serverInfo = sqlsrv_server_info($this->conn);

        return $serverInfo['SQLServerVersion'];
    }

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

    /**
     * {@inheritDoc}
     */
    public function prepare(string $sql) : DriverStatement
    {
        return new SQLSrvStatement($this->conn, $sql, $this->lastInsertId);
    }

    /**
     * {@inheritDoc}
     */
    public function query(string $sql) : ResultStatement
    {
        $stmt = $this->prepare($sql);
        $stmt->execute();

        return $stmt;
    }

    /**
     * {@inheritDoc}
     */
    public function quote(string $value) : string
    {
        return "'" . str_replace("'", "''", $value) . "'";
    }

    /**
     * {@inheritDoc}
     */
    public function exec(string $statement) : int
    {
        $stmt = sqlsrv_query($this->conn, $statement);

        if ($stmt === false) {
            throw self::exceptionFromSqlSrvErrors();
        }

        return sqlsrv_rows_affected($stmt);
    }

    /**
     * {@inheritDoc}
     */
    public function lastInsertId() : string
    {
        $stmt = $this->query('SELECT @@IDENTITY');

        $result = $stmt->fetchColumn();

        if ($result === null) {
            throw DriverException::noInsertId();
        }

        return (string) $result;
    }

    /**
     * {@inheritDoc}
     */
    public function getSequenceNumber(string $name) : string
    {
        $stmt = $this->prepare('SELECT CONVERT(VARCHAR(MAX), current_value) FROM sys.sequences WHERE name = ?');
        $stmt->execute([$name]);

        $result = $stmt->fetchColumn();

        if ($result === false) {
            throw DriverException::noSuchSequence($name);
        }

        return (string) $result;
    }

    /**
     * {@inheritDoc}
     */
    public function beginTransaction() : void
    {
        if (! sqlsrv_begin_transaction($this->conn)) {
            throw self::exceptionFromSqlSrvErrors();
        }
    }

    /**
     * {@inheritDoc}
     */
    public function commit() : void
    {
        if (! sqlsrv_commit($this->conn)) {
            throw self::exceptionFromSqlSrvErrors();
        }
    }

    /**
     * {@inheritDoc}
     */
    public function rollBack() : void
    {
        if (! sqlsrv_rollback($this->conn)) {
            throw self::exceptionFromSqlSrvErrors();
        }
    }

    /**
     * {@inheritDoc}
     */
    public function errorCode()
    {
        $errors = sqlsrv_errors(SQLSRV_ERR_ERRORS);
        if ($errors) {
            return $errors[0]['code'];
        }

        return false;
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.
    }
}
    }

    /**
     * {@inheritDoc}
     */
    public function errorInfo()
    {
        return sqlsrv_errors(SQLSRV_ERR_ERRORS);
    }

    /**
     * Helper method to turn sql server errors into exception.
     */
    public static function exceptionFromSqlSrvErrors() : DriverException
    {
        $errors    = sqlsrv_errors(SQLSRV_ERR_ERRORS);
        $message   = '';
        $sqlState  = null;
        $errorCode = null;

        foreach ($errors as $error) {
            $message .= 'SQLSTATE [' . $error['SQLSTATE'] . ', ' . $error['code'] . ']: ' . $error['message'] . "\n";

            if ($sqlState === null) {
                $sqlState = $error['SQLSTATE'];
            }

            if ($errorCode !== null) {
                continue;
            }

            $errorCode = $error['code'];
        }
        if (! $message) {
            $message = 'SQL Server error occurred but no error message was retrieved from driver.';
        }

        return new DriverException(rtrim($message), $sqlState, $errorCode);
    }
}


1		<?php
2
3		namespace Doctrine\DBAL\Driver\SQLSrv;
4
5		use Doctrine\DBAL\Driver\Connection;
6		use Doctrine\DBAL\Driver\DriverException;
7		use Doctrine\DBAL\Driver\ResultStatement;
8		use Doctrine\DBAL\Driver\ServerInfoAwareConnection;
9		use Doctrine\DBAL\Driver\Statement as DriverStatement;
10		use const SQLSRV_ERR_ERRORS;
11		use function rtrim;
12		use function sqlsrv_begin_transaction;
13		use function sqlsrv_commit;
14		use function sqlsrv_configure;
15		use function sqlsrv_connect;
16		use function sqlsrv_errors;
17		use function sqlsrv_query;
18		use function sqlsrv_rollback;
19		use function sqlsrv_rows_affected;
20		use function sqlsrv_server_info;
21		use function str_replace;
22
23		/**
24		* SQL Server implementation for the Connection interface.
25		*/
26		class SQLSrvConnection implements Connection, ServerInfoAwareConnection
27		{
28		/** @var resource */
29		protected $conn;
30
31		/** @var LastInsertId */
32		protected $lastInsertId;
33
34		/**
35		* @param string $serverName
36		* @param mixed[] $connectionOptions
37		*
38		* @throws DriverException
39		*/
40	26	public function __construct($serverName, $connectionOptions)
41		{
42	26	if (! sqlsrv_configure('WarningsReturnAsErrors', 0)) {
43		throw self::exceptionFromSqlSrvErrors();
44		}
45
46	26	$this->conn = sqlsrv_connect($serverName, $connectionOptions);
		0 ignored issues – show Documentation Bug introduced 2017-11-30 20:31 UTC by Report Bug Copy Issue Report It seems like `sqlsrv_connect($serverName, $connectionOptions)` can also be of type `false`. However, the property `$conn` is declared as type `resource`. Maybe add an additional type check? Our type inference engine has found a suspicous assignment of a value to a property. This check raises an issue when a value that can be of a mixed type is assigned to a property that is type hinted more strictly. For example, imagine you have a variable `$accountId` that can either hold an Id object or false (if there is no account id yet). Your code now assigns that value to the `id` property of an instance of the `Account` class. This class holds a proper account, so the id value must no longer be false. Either this assignment is in error or a type check should be added for that assignment. class Id { public $id; public function __construct($id) { $this->id = $id; } } class Account { /** @var Id $id */ public $id; } $account_id = false; if (starsAreRight()) { $account_id = new Id(42); } $account = new Account(); if ($account instanceof Id) { $account->id = $account_id; } Loading history...
47	26	if (! $this->conn) {
48	1	throw self::exceptionFromSqlSrvErrors();
49		}
50	26	$this->lastInsertId = new LastInsertId();
51	26	}
52
53		/**
54		* {@inheritdoc}
55		*/
56	23	public function getServerVersion()
57		{
58	23	$serverInfo = sqlsrv_server_info($this->conn);
59
60	23	return $serverInfo['SQLServerVersion'];
61		}
62
63		/**
64		* {@inheritdoc}
65		*/
66	24	public function requiresQueryForServerVersion()
67		{
68	24	return false;
69		}
70
71		/**
72		* {@inheritDoc}
73		*/
74	244	public function prepare(string $sql) : DriverStatement
75		{
76	244	return new SQLSrvStatement($this->conn, $sql, $this->lastInsertId);
77		}
78
79		/**
80		* {@inheritDoc}
81		*/
82	180	public function query(string $sql) : ResultStatement
83		{
84	180	$stmt = $this->prepare($sql);
85	180	$stmt->execute();
86
87	180	return $stmt;
88		}
89
90		/**
91		* {@inheritDoc}
92		*/
93	7	public function quote(string $value) : string
94		{
95	7	return "'" . str_replace("'", "''", $value) . "'";
96		}
97
98		/**
99		* {@inheritDoc}
100		*/
101	162	public function exec(string $statement) : int
102		{
103	162	$stmt = sqlsrv_query($this->conn, $statement);
104
105	162	if ($stmt === false) {
106	103	throw self::exceptionFromSqlSrvErrors();
107		}
108
109	137	return sqlsrv_rows_affected($stmt);
110		}
111
112		/**
113		* {@inheritDoc}
114		*/
115	3	public function lastInsertId() : string
116		{
117	3	$stmt = $this->query('SELECT @@IDENTITY');
118
119	3	$result = $stmt->fetchColumn();
120
121	3	if ($result === null) {
122	1	throw DriverException::noInsertId();
123		}
124
125	2	return (string) $result;
126		}
127
128		/**
129		* {@inheritDoc}
130		*/
131	2	public function getSequenceNumber(string $name) : string
132		{
133	2	$stmt = $this->prepare('SELECT CONVERT(VARCHAR(MAX), current_value) FROM sys.sequences WHERE name = ?');
134	2	$stmt->execute([$name]);
135
136	2	$result = $stmt->fetchColumn();
137
138	2	if ($result === false) {
139	1	throw DriverException::noSuchSequence($name);
140		}
141
142	1	return (string) $result;
143		}
144
145		/**
146		* {@inheritDoc}
147		*/
148	15	public function beginTransaction() : void
149		{
150	15	if (! sqlsrv_begin_transaction($this->conn)) {
151		throw self::exceptionFromSqlSrvErrors();
152		}
153	15	}
154
155		/**
156		* {@inheritDoc}
157		*/
158	6	public function commit() : void
159		{
160	6	if (! sqlsrv_commit($this->conn)) {
161		throw self::exceptionFromSqlSrvErrors();
162		}
163	6	}
164
165		/**
166		* {@inheritDoc}
167		*/
168	10	public function rollBack() : void
169		{
170	10	if (! sqlsrv_rollback($this->conn)) {
171		throw self::exceptionFromSqlSrvErrors();
172		}
173	10	}
174
175		/**
176		* {@inheritDoc}
177		*/
178		public function errorCode()
179		{
180		$errors = sqlsrv_errors(SQLSRV_ERR_ERRORS);
181		if ($errors) {
182		return $errors[0]['code'];
183		}
184
185		return false;
		0 ignored issues – show Bug Best Practice introduced 2017-11-18 19:58 UTC by Report Bug Copy Issue Report The expression `return false` returns the type `false` which is incompatible with the return type mandated by `Doctrine\DBAL\Driver\Connection::errorCode()` of `null\|string`. In the issue above, the returned value is violating the contract defined by the mentioned interface. Let's take a look at an example: 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. } } Loading history...
186		}
187
188		/**
189		* {@inheritDoc}
190		*/
191		public function errorInfo()
192		{
193		return sqlsrv_errors(SQLSRV_ERR_ERRORS);
194		}
195
196		/**
197		* Helper method to turn sql server errors into exception.
198		*/
199	105	public static function exceptionFromSqlSrvErrors() : DriverException
200		{
201	105	$errors = sqlsrv_errors(SQLSRV_ERR_ERRORS);
202	105	$message = '';
203	105	$sqlState = null;
204	105	$errorCode = null;
205
206	105	foreach ($errors as $error) {
207	105	$message .= 'SQLSTATE [' . $error['SQLSTATE'] . ', ' . $error['code'] . ']: ' . $error['message'] . "\n";
208
209	105	if ($sqlState === null) {
210	105	$sqlState = $error['SQLSTATE'];
211		}
212
213	105	if ($errorCode !== null) {
214	1	continue;
215		}
216
217	105	$errorCode = $error['code'];
218		}
219	105	if (! $message) {
220		$message = 'SQL Server error occurred but no error message was retrieved from driver.';
221		}
222
223	105	return new DriverException(rtrim($message), $sqlState, $errorCode);
224		}
225		}
226

doctrine / dbal

Pull Request — develop (#3368)

SQLSrvConnection::getSequenceNumber() A

Complexity

Size

Duplication

Code Coverage

Importance

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