DB2Statement::columnCount() - Code Metrics - Inspection of "Add PHPStan 0.10, apply level 3" - Majkl578/doctrine-dbal - Measure and Improve Code Quality continuously with Scrutinizer

Failed Conditions

Push — phpstan ( 752f9f...1acc4a )

by Michael

created 2018-06-27 01:18 UTC

DB2Statement::columnCount() A

↳ Parent: DB2Statement

Complexity

Conditions	2
Paths	2

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	6

Importance

Changes

Metric	Value
dl	0
loc	7
rs	10
c	0
b	0
f	0
ccs	0
cts	6
cp	0
cc	2
nc	2
nop	0
crap	6

<?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\IBMDB2;

use Doctrine\DBAL\Driver\Statement;
use Doctrine\DBAL\Driver\StatementIterator;
use Doctrine\DBAL\FetchMode;
use Doctrine\DBAL\ParameterType;
use const DB2_CHAR;
use const DB2_LONG;
use const DB2_PARAM_IN;
use function array_change_key_case;
use function call_user_func_array;
use function db2_bind_param;
use function db2_execute;
use function db2_fetch_array;
use function db2_fetch_assoc;
use function db2_fetch_both;
use function db2_fetch_object;
use function db2_free_result;
use function db2_num_fields;
use function db2_num_rows;
use function db2_stmt_error;
use function db2_stmt_errormsg;
use function func_get_args;
use function func_num_args;
use function gettype;
use function is_object;
use function is_string;
use function ksort;
use function sprintf;
use function strtolower;

class DB2Statement implements \IteratorAggregate, Statement
{
    /**
     * @var resource
     */
    private $_stmt;

    /**
     * @var array
     */
    private $_bindParam = [];

    /**
     * @var string Name of the default class to instantiate when fetching class instances.
     */
    private $defaultFetchClass = '\stdClass';

    /**
     * @var mixed[] Constructor arguments for the default class to instantiate when fetching class instances.
     */
    private $defaultFetchClassCtorArgs = [];

    /**
     * @var int
     */
    private $_defaultFetchMode = FetchMode::MIXED;

    /**
     * Indicates whether the statement is in the state when fetching results is possible
     *
     * @var bool
     */
    private $result = false;

    /**
     * DB2_BINARY, DB2_CHAR, DB2_DOUBLE, or DB2_LONG
     *
     * @var array
     */
    static private $_typeMap = [
        ParameterType::INTEGER => DB2_LONG,
        ParameterType::STRING  => DB2_CHAR,
    ];

    /**
     * @param resource $stmt
     */
    public function __construct($stmt)
    {
        $this->_stmt = $stmt;
    }

    /**
     * {@inheritdoc}
     */
    public function bindValue($param, $value, $type = ParameterType::STRING)
    {
        return $this->bindParam($param, $value, $type);
    }

    /**
     * {@inheritdoc}
     */
    public function bindParam($column, &$variable, $type = ParameterType::STRING, $length = null)
    {
        $this->_bindParam[$column] =& $variable;

        if ($type && isset(self::$_typeMap[$type])) {
            $type = self::$_typeMap[$type];
        } else {
            $type = DB2_CHAR;
        }

        if (!db2_bind_param($this->_stmt, $column, "variable", DB2_PARAM_IN, $type)) {
            throw new DB2Exception(db2_stmt_errormsg());
        }

        return true;
    }

    /**
     * {@inheritdoc}
     */
    public function closeCursor()
    {
        if ( ! $this->_stmt) {
            return false;
        }

        $this->_bindParam = [];

        if (!db2_free_result($this->_stmt)) {
            return false;
        }

        $this->result = false;

        return true;
    }

    /**
     * {@inheritdoc}
     */
    public function columnCount()
    {
        if ( ! $this->_stmt) {
            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.
    }
}
        }

        return db2_num_fields($this->_stmt);
    }

    /**
     * {@inheritdoc}
     */
    public function errorCode()
    {
        return db2_stmt_error();
    }

    /**
     * {@inheritdoc}
     */
    public function errorInfo()
    {
        return [
            db2_stmt_errormsg(),
            db2_stmt_error(),
        ];
    }

    /**
     * {@inheritdoc}
     */
    public function execute($params = null)
    {
        if ( ! $this->_stmt) {
            return false;
        }

        if ($params === null) {
            ksort($this->_bindParam);

            $params = [];

            foreach ($this->_bindParam as $column => $value) {
                $params[] = $value;
            }
        }

        $retval = db2_execute($this->_stmt, $params);

        if ($retval === false) {
            throw new DB2Exception(db2_stmt_errormsg());
        }

        $this->result = true;

        return $retval;
    }

    /**
     * {@inheritdoc}
     */
    public function setFetchMode($fetchMode, $arg2 = null, $arg3 = null)
    {
        $this->_defaultFetchMode         = $fetchMode;
        $this->defaultFetchClass         = $arg2 ? $arg2 : $this->defaultFetchClass;
        $this->defaultFetchClassCtorArgs = $arg3 ? (array) $arg3 : $this->defaultFetchClassCtorArgs;

        return true;
    }

    /**
     * {@inheritdoc}
     */
    public function getIterator()
    {
        return new StatementIterator($this);
    }

    /**
     * {@inheritdoc}
     */
    public function fetch($fetchMode = null, $cursorOrientation = \PDO::FETCH_ORI_NEXT, $cursorOffset = 0)
    {
        // do not try fetching from the statement if it's not expected to contain result
        // in order to prevent exceptional situation
        if (!$this->result) {
            return false;
        }

        $fetchMode = $fetchMode ?: $this->_defaultFetchMode;
        switch ($fetchMode) {
            case FetchMode::COLUMN:
                return $this->fetchColumn();

            case FetchMode::MIXED:
                return db2_fetch_both($this->_stmt);

            case FetchMode::ASSOCIATIVE:
                return db2_fetch_assoc($this->_stmt);

            case FetchMode::CUSTOM_OBJECT:
                $className = $this->defaultFetchClass;
                $ctorArgs  = $this->defaultFetchClassCtorArgs;

                if (func_num_args() >= 2) {
                    $args      = func_get_args();
                    $className = $args[1];
                    $ctorArgs  = $args[2] ?? [];
                }

                $result = db2_fetch_object($this->_stmt);

                if ($result instanceof \stdClass) {
                    $result = $this->castObject($result, $className, $ctorArgs);
                }

                return $result;

            case FetchMode::NUMERIC:
                return db2_fetch_array($this->_stmt);

            case FetchMode::STANDARD_OBJECT:
                return db2_fetch_object($this->_stmt);

            default:
                throw new DB2Exception('Given Fetch-Style ' . $fetchMode . ' is not supported.');
        }
    }

    /**
     * {@inheritdoc}
     */
    public function fetchAll($fetchMode = null, $fetchArgument = null, $ctorArgs = null)
    {
        $rows = [];

        switch ($fetchMode) {
            case FetchMode::CUSTOM_OBJECT:
                while (($row = $this->fetch(...func_get_args())) !== false) {
                    $rows[] = $row;
                }
                break;
            case FetchMode::COLUMN:
                while (($row = $this->fetchColumn()) !== false) {
                    $rows[] = $row;
                }
                break;
            default:
                while (($row = $this->fetch($fetchMode)) !== false) {
                    $rows[] = $row;
                }
        }

        return $rows;
    }

    /**
     * {@inheritdoc}
     */
    public function fetchColumn($columnIndex = 0)
    {
        $row = $this->fetch(FetchMode::NUMERIC);

        if (false === $row) {
            return false;
        }

        return $row[$columnIndex] ?? null;
    }

    /**
     * {@inheritdoc}
     */
    public function rowCount()
    {
        return (@db2_num_rows($this->_stmt)) ? : 0;
    }

    /**
     * Casts a stdClass object to the given class name mapping its' properties.
     *
     * @param \stdClass     $sourceObject     Object to cast from.
     * @param string|object $destinationClass Name of the class or class instance to cast to.
     * @param array         $ctorArgs         Arguments to use for constructing the destination class instance.
     *
     * @return object
     *
     * @throws DB2Exception
     */
    private function castObject(\stdClass $sourceObject, $destinationClass, array $ctorArgs = [])
    {
        if ( ! is_string($destinationClass)) {
            if ( ! is_object($destinationClass)) {
                throw new DB2Exception(sprintf(
                    'Destination class has to be of type string or object, %s given.', gettype($destinationClass)
                ));
            }
        } else {
            $destinationClass = new \ReflectionClass($destinationClass);
            $destinationClass = $destinationClass->newInstanceArgs($ctorArgs);
        }

        $sourceReflection           = new \ReflectionObject($sourceObject);
        $destinationClassReflection = new \ReflectionObject($destinationClass);
        /** @var \ReflectionProperty[] $destinationProperties */
        $destinationProperties      = array_change_key_case($destinationClassReflection->getProperties(), \CASE_LOWER);

        foreach ($sourceReflection->getProperties() as $sourceProperty) {
            $sourceProperty->setAccessible(true);

            $name  = $sourceProperty->getName();
            $value = $sourceProperty->getValue($sourceObject);

            // Try to find a case-matching property.
            if ($destinationClassReflection->hasProperty($name)) {
                $destinationProperty = $destinationClassReflection->getProperty($name);

                $destinationProperty->setAccessible(true);
                $destinationProperty->setValue($destinationClass, $value);

                continue;
            }

            $name = strtolower($name);

            // Try to find a property without matching case.
            // Fallback for the driver returning either all uppercase or all lowercase column names.
            if (isset($destinationProperties[$name])) {
                $destinationProperty = $destinationProperties[$name];

                $destinationProperty->setAccessible(true);
                $destinationProperty->setValue($destinationClass, $value);

                continue;
            }

            $destinationClass->$name = $value;
        }

        return $destinationClass;
    }
}


1			<?php
2			/*
3			* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
4			* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
5			* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
6			* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
7			* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
8			* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
9			* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
10			* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
11			* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
12			* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
13			* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
14			*
15			* This software consists of voluntary contributions made by many individuals
16			* and is licensed under the MIT license. For more information, see
17			* <http://www.doctrine-project.org>.
18			*/
19
20			namespace Doctrine\DBAL\Driver\IBMDB2;
21
22			use Doctrine\DBAL\Driver\Statement;
23			use Doctrine\DBAL\Driver\StatementIterator;
24			use Doctrine\DBAL\FetchMode;
25			use Doctrine\DBAL\ParameterType;
26			use const DB2_CHAR;
27			use const DB2_LONG;
28			use const DB2_PARAM_IN;
29			use function array_change_key_case;
30			use function call_user_func_array;
31			use function db2_bind_param;
32			use function db2_execute;
33			use function db2_fetch_array;
34			use function db2_fetch_assoc;
35			use function db2_fetch_both;
36			use function db2_fetch_object;
37			use function db2_free_result;
38			use function db2_num_fields;
39			use function db2_num_rows;
40			use function db2_stmt_error;
41			use function db2_stmt_errormsg;
42			use function func_get_args;
43			use function func_num_args;
44			use function gettype;
45			use function is_object;
46			use function is_string;
47			use function ksort;
48			use function sprintf;
49			use function strtolower;
50
51			class DB2Statement implements \IteratorAggregate, Statement
52			{
53			/**
54			* @var resource
55			*/
56			private $_stmt;
57
58			/**
59			* @var array
60			*/
61			private $_bindParam = [];
62
63			/**
64			* @var string Name of the default class to instantiate when fetching class instances.
65			*/
66			private $defaultFetchClass = '\stdClass';
67
68			/**
69			* @var mixed[] Constructor arguments for the default class to instantiate when fetching class instances.
70			*/
71			private $defaultFetchClassCtorArgs = [];
72
73			/**
74			* @var int
75			*/
76			private $_defaultFetchMode = FetchMode::MIXED;
77
78			/**
79			* Indicates whether the statement is in the state when fetching results is possible
80			*
81			* @var bool
82			*/
83			private $result = false;
84
85			/**
86			* DB2_BINARY, DB2_CHAR, DB2_DOUBLE, or DB2_LONG
87			*
88			* @var array
89			*/
90			static private $_typeMap = [
91			ParameterType::INTEGER => DB2_LONG,
92			ParameterType::STRING => DB2_CHAR,
93			];
94
95			/**
96			* @param resource $stmt
97			*/
98			public function __construct($stmt)
99			{
100			$this->_stmt = $stmt;
101			}
102
103			/**
104			* {@inheritdoc}
105			*/
106			public function bindValue($param, $value, $type = ParameterType::STRING)
107			{
108			return $this->bindParam($param, $value, $type);
109			}
110
111			/**
112			* {@inheritdoc}
113			*/
114			public function bindParam($column, &$variable, $type = ParameterType::STRING, $length = null)
115			{
116			$this->_bindParam[$column] =& $variable;
117
118			if ($type && isset(self::$_typeMap[$type])) {
119			$type = self::$_typeMap[$type];
120			} else {
121			$type = DB2_CHAR;
122			}
123
124			if (!db2_bind_param($this->_stmt, $column, "variable", DB2_PARAM_IN, $type)) {
125			throw new DB2Exception(db2_stmt_errormsg());
126			}
127
128			return true;
129			}
130
131			/**
132			* {@inheritdoc}
133			*/
134			public function closeCursor()
135			{
136			if ( ! $this->_stmt) {
137			return false;
138			}
139
140			$this->_bindParam = [];
141
142			if (!db2_free_result($this->_stmt)) {
143			return false;
144			}
145
146			$this->result = false;
147
148			return true;
149			}
150
151			/**
152			* {@inheritdoc}
153			*/
154			public function columnCount()
155			{
156			if ( ! $this->_stmt) {
157			return false;
			0 ignored issues – show Bug Best Practice introduced 2018-04-06 07:38 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\Res...tatement::columnCount()` of `integer`. 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 $name; } class User implements HasName { /* @return string\|Name */ public function getName() { return new Name('foo'); // This is a violation of the ``HasName`` interface // which only allows a string value to be returned. } } Loading history...
158			}
159
160			return db2_num_fields($this->_stmt);
161			}
162
163			/**
164			* {@inheritdoc}
165			*/
166			public function errorCode()
167			{
168			return db2_stmt_error();
169			}
170
171			/**
172			* {@inheritdoc}
173			*/
174			public function errorInfo()
175			{
176			return [
177			db2_stmt_errormsg(),
178			db2_stmt_error(),
179			];
180			}
181
182			/**
183			* {@inheritdoc}
184			*/
185			public function execute($params = null)
186			{
187			if ( ! $this->_stmt) {
188			return false;
189			}
190
191			if ($params === null) {
192			ksort($this->_bindParam);
193
194			$params = [];
195
196			foreach ($this->_bindParam as $column => $value) {
197			$params[] = $value;
198			}
199			}
200
201			$retval = db2_execute($this->_stmt, $params);
202
203			if ($retval === false) {
204			throw new DB2Exception(db2_stmt_errormsg());
205			}
206
207			$this->result = true;
208
209			return $retval;
210			}
211
212			/**
213			* {@inheritdoc}
214			*/
215			public function setFetchMode($fetchMode, $arg2 = null, $arg3 = null)
216			{
217			$this->_defaultFetchMode = $fetchMode;
218			$this->defaultFetchClass = $arg2 ? $arg2 : $this->defaultFetchClass;
219			$this->defaultFetchClassCtorArgs = $arg3 ? (array) $arg3 : $this->defaultFetchClassCtorArgs;
220
221			return true;
222			}
223
224			/**
225			* {@inheritdoc}
226			*/
227			public function getIterator()
228			{
229			return new StatementIterator($this);
230			}
231
232			/**
233			* {@inheritdoc}
234			*/
235			public function fetch($fetchMode = null, $cursorOrientation = \PDO::FETCH_ORI_NEXT, $cursorOffset = 0)
236			{
237			// do not try fetching from the statement if it's not expected to contain result
238			// in order to prevent exceptional situation
239			if (!$this->result) {
240			return false;
241			}
242
243			$fetchMode = $fetchMode ?: $this->_defaultFetchMode;
244			switch ($fetchMode) {
245			case FetchMode::COLUMN:
246			return $this->fetchColumn();
247
248			case FetchMode::MIXED:
249			return db2_fetch_both($this->_stmt);
250
251			case FetchMode::ASSOCIATIVE:
252			return db2_fetch_assoc($this->_stmt);
253
254			case FetchMode::CUSTOM_OBJECT:
255			$className = $this->defaultFetchClass;
256			$ctorArgs = $this->defaultFetchClassCtorArgs;
257
258			if (func_num_args() >= 2) {
259			$args = func_get_args();
260			$className = $args[1];
261			$ctorArgs = $args[2] ?? [];
262			}
263
264			$result = db2_fetch_object($this->_stmt);
265
266			if ($result instanceof \stdClass) {
267			$result = $this->castObject($result, $className, $ctorArgs);
268			}
269
270			return $result;
271
272			case FetchMode::NUMERIC:
273			return db2_fetch_array($this->_stmt);
274
275			case FetchMode::STANDARD_OBJECT:
276			return db2_fetch_object($this->_stmt);
277
278			default:
279			throw new DB2Exception('Given Fetch-Style ' . $fetchMode . ' is not supported.');
280			}
281			}
282
283			/**
284			* {@inheritdoc}
285			*/
286			public function fetchAll($fetchMode = null, $fetchArgument = null, $ctorArgs = null)
287			{
288			$rows = [];
289
290			switch ($fetchMode) {
291			case FetchMode::CUSTOM_OBJECT:
292			while (($row = $this->fetch(...func_get_args())) !== false) {
293			$rows[] = $row;
294			}
295			break;
296			case FetchMode::COLUMN:
297			while (($row = $this->fetchColumn()) !== false) {
298			$rows[] = $row;
299			}
300			break;
301			default:
302			while (($row = $this->fetch($fetchMode)) !== false) {
303			$rows[] = $row;
304			}
305			}
306
307			return $rows;
308			}
309
310			/**
311			* {@inheritdoc}
312			*/
313			public function fetchColumn($columnIndex = 0)
314			{
315			$row = $this->fetch(FetchMode::NUMERIC);
316
317			if (false === $row) {
318			return false;
319			}
320
321			return $row[$columnIndex] ?? null;
322			}
323
324			/**
325			* {@inheritdoc}
326			*/
327			public function rowCount()
328			{
329			return (@db2_num_rows($this->_stmt)) ? : 0;
330			}
331
332			/**
333			* Casts a stdClass object to the given class name mapping its' properties.
334			*
335			* @param \stdClass $sourceObject Object to cast from.
336			* @param string\|object $destinationClass Name of the class or class instance to cast to.
337			* @param array $ctorArgs Arguments to use for constructing the destination class instance.
338			*
339			* @return object
340			*
341			* @throws DB2Exception
342			*/
343			private function castObject(\stdClass $sourceObject, $destinationClass, array $ctorArgs = [])
344			{
345			if ( ! is_string($destinationClass)) {
346			if ( ! is_object($destinationClass)) {
347			throw new DB2Exception(sprintf(
348			'Destination class has to be of type string or object, %s given.', gettype($destinationClass)
349			));
350			}
351			} else {
352			$destinationClass = new \ReflectionClass($destinationClass);
353			$destinationClass = $destinationClass->newInstanceArgs($ctorArgs);
354			}
355
356			$sourceReflection = new \ReflectionObject($sourceObject);
357			$destinationClassReflection = new \ReflectionObject($destinationClass);
358			/** @var \ReflectionProperty[] $destinationProperties */
359			$destinationProperties = array_change_key_case($destinationClassReflection->getProperties(), \CASE_LOWER);
360
361			foreach ($sourceReflection->getProperties() as $sourceProperty) {
362			$sourceProperty->setAccessible(true);
363
364			$name = $sourceProperty->getName();
365			$value = $sourceProperty->getValue($sourceObject);
366
367			// Try to find a case-matching property.
368			if ($destinationClassReflection->hasProperty($name)) {
369			$destinationProperty = $destinationClassReflection->getProperty($name);
370
371			$destinationProperty->setAccessible(true);
372			$destinationProperty->setValue($destinationClass, $value);
373
374			continue;
375			}
376
377			$name = strtolower($name);
378
379			// Try to find a property without matching case.
380			// Fallback for the driver returning either all uppercase or all lowercase column names.
381			if (isset($destinationProperties[$name])) {
382			$destinationProperty = $destinationProperties[$name];
383
384			$destinationProperty->setAccessible(true);
385			$destinationProperty->setValue($destinationClass, $value);
386
387			continue;
388			}
389
390			$destinationClass->$name = $value;
391			}
392
393			return $destinationClass;
394			}
395			}
396

Majkl578 / doctrine-dbal

Push — phpstan ( 752f9f...1acc4a )

DB2Statement::columnCount() A

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