DB2Statement::bindValue() - Code Metrics - Inspection of "Merge pull request #3738 from ModelTech/hotfix/oci..." - doctrine/dbal - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — 2.10 ( 39b76b...400f60 )

by Sergei

created 2019-12-21 08:15 UTC

DB2Statement::bindValue() A

↳ Parent: DB2Statement

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1.037

Importance

Changes

Metric	Value
dl	0
loc	3
ccs	2
cts	3
cp	0.6667
rs	10
c	0
b	0
f	0
cc	1
eloc	1
nc	1
nop	3
crap	1.037

<?php

namespace Doctrine\DBAL\Driver\IBMDB2;

use Doctrine\DBAL\Driver\Statement;
use Doctrine\DBAL\Driver\StatementIterator;
use Doctrine\DBAL\FetchMode;
use Doctrine\DBAL\ParameterType;
use IteratorAggregate;
use PDO;
use ReflectionClass;
use ReflectionObject;
use ReflectionProperty;
use stdClass;
use const CASE_LOWER;
use const DB2_BINARY;
use const DB2_CHAR;
use const DB2_LONG;
use const DB2_PARAM_FILE;
use const DB2_PARAM_IN;
use function array_change_key_case;
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 error_get_last;
use function fclose;
use function func_get_args;
use function func_num_args;
use function fwrite;
use function gettype;
use function is_object;
use function is_resource;
use function is_string;
use function ksort;
use function sprintf;
use function stream_copy_to_stream;
use function stream_get_meta_data;
use function strtolower;
use function tmpfile;

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

    /** @var mixed[] */
    private $bindParam = [];

    /**
     * Map of LOB parameter positions to the tuples containing reference to the variable bound to the driver statement
     * and the temporary file handle bound to the underlying statement
     *
     * @var mixed[][]
     */
    private $lobs = [];

    /** @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;

    /**
     * @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, $length = null)
    {
        switch ($type) {
            case ParameterType::INTEGER:
                $this->bind($column, $variable, DB2_PARAM_IN, DB2_LONG);
                break;

            case ParameterType::LARGE_OBJECT:
                if (isset($this->lobs[$column])) {
                    [, $handle] = $this->lobs[$column];
                    fclose($handle);
                }

                $handle = $this->createTemporaryFile();
                $path   = stream_get_meta_data($handle)['uri'];

                $this->bind($column, $path, DB2_PARAM_FILE, DB2_BINARY);

                $this->lobs[$column] = [&$variable, $handle];
                break;

            default:
                $this->bind($column, $variable, DB2_PARAM_IN, DB2_CHAR);
                break;
        }

        return true;
    }

    /**
     * @param int   $position Parameter position
     * @param mixed $variable
     *
     * @throws DB2Exception
     */
    private function bind($position, &$variable, int $parameterType, int $dataType) : void
    {
        $this->bindParam[$position] =& $variable;

        if (! db2_bind_param($this->stmt, $position, 'variable', $parameterType, $dataType)) {
            throw new DB2Exception(db2_stmt_errormsg());
        }
    }

    /**
     * {@inheritdoc}
     */
    public function closeCursor()
    {
        $this->bindParam = [];

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

        $this->result = false;

        return true;
    }

    /**
     * {@inheritdoc}
     */
    public function columnCount()
    {
        return db2_num_fields($this->stmt) ?: 0;
    }

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

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

    /**
     * {@inheritdoc}
     */
    public function execute($params = null)
    {
        if ($params === null) {
            ksort($this->bindParam);

            $params = [];

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

        foreach ($this->lobs as [$source, $target]) {
            if (is_resource($source)) {
                $this->copyStreamToStream($source, $target);

                continue;
            }

            $this->writeStringToStream($source, $target);
        }

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

        foreach ($this->lobs as [, $handle]) {
            fclose($handle);
        }

        $this->lobs = [];

        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 ?: $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 ($row === false) {
            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 mixed[]       $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;
    }

    /**
     * @return resource
     *
     * @throws DB2Exception
     */
    private function createTemporaryFile()
    {
        $handle = @tmpfile();

        if ($handle === false) {
            throw new DB2Exception('Could not create temporary file: ' . error_get_last()['message']);
        }

        return $handle;
    }

    /**
     * @param resource $source
     * @param resource $target
     *
     * @throws DB2Exception
     */
    private function copyStreamToStream($source, $target) : void
    {
        if (@stream_copy_to_stream($source, $target) === false) {
            throw new DB2Exception('Could not copy source stream to temporary file: ' . error_get_last()['message']);
        }
    }

    /**
     * @param resource $target
     *
     * @throws DB2Exception
     */
    private function writeStringToStream(string $string, $target) : void
    {
        if (@fwrite($target, $string) === false) {
            throw new DB2Exception('Could not write string to temporary file: ' . error_get_last()['message']);
        }
    }
}


1		<?php
2
3		namespace Doctrine\DBAL\Driver\IBMDB2;
4
5		use Doctrine\DBAL\Driver\Statement;
6		use Doctrine\DBAL\Driver\StatementIterator;
7		use Doctrine\DBAL\FetchMode;
8		use Doctrine\DBAL\ParameterType;
9		use IteratorAggregate;
10		use PDO;
11		use ReflectionClass;
12		use ReflectionObject;
13		use ReflectionProperty;
14		use stdClass;
15		use const CASE_LOWER;
16		use const DB2_BINARY;
17		use const DB2_CHAR;
18		use const DB2_LONG;
19		use const DB2_PARAM_FILE;
20		use const DB2_PARAM_IN;
21		use function array_change_key_case;
22		use function db2_bind_param;
23		use function db2_execute;
24		use function db2_fetch_array;
25		use function db2_fetch_assoc;
26		use function db2_fetch_both;
27		use function db2_fetch_object;
28		use function db2_free_result;
29		use function db2_num_fields;
30		use function db2_num_rows;
31		use function db2_stmt_error;
32		use function db2_stmt_errormsg;
33		use function error_get_last;
34		use function fclose;
35		use function func_get_args;
36		use function func_num_args;
37		use function fwrite;
38		use function gettype;
39		use function is_object;
40		use function is_resource;
41		use function is_string;
42		use function ksort;
43		use function sprintf;
44		use function stream_copy_to_stream;
45		use function stream_get_meta_data;
46		use function strtolower;
47		use function tmpfile;
48
49		class DB2Statement implements IteratorAggregate, Statement
50		{
51		/** @var resource */
52		private $stmt;
53
54		/** @var mixed[] */
55		private $bindParam = [];
56
57		/**
58		* Map of LOB parameter positions to the tuples containing reference to the variable bound to the driver statement
59		* and the temporary file handle bound to the underlying statement
60		*
61		* @var mixed[][]
62		*/
63		private $lobs = [];
64
65		/** @var string Name of the default class to instantiate when fetching class instances. */
66		private $defaultFetchClass = '\stdClass';
67
68		/** @var mixed[] Constructor arguments for the default class to instantiate when fetching class instances. */
69		private $defaultFetchClassCtorArgs = [];
70
71		/** @var int */
72		private $defaultFetchMode = FetchMode::MIXED;
73
74		/**
75		* Indicates whether the statement is in the state when fetching results is possible
76		*
77		* @var bool
78		*/
79		private $result = false;
80
81		/**
82		* @param resource $stmt
83		*/
84	220	public function __construct($stmt)
85		{
86	220	$this->stmt = $stmt;
87	220	}
88
89		/**
90		* {@inheritdoc}
91		*/
92	218	public function bindValue($param, $value, $type = ParameterType::STRING)
93		{
94	218	return $this->bindParam($param, $value, $type);
95		}
96
97		/**
98		* {@inheritdoc}
99		*/
100	218	public function bindParam($column, &$variable, $type = ParameterType::STRING, $length = null)
101		{
102	218	switch ($type) {
103		case ParameterType::INTEGER:
104	218	$this->bind($column, $variable, DB2_PARAM_IN, DB2_LONG);
105	218	break;
106
107		case ParameterType::LARGE_OBJECT:
108	218	if (isset($this->lobs[$column])) {
109		[, $handle] = $this->lobs[$column];
110		fclose($handle);
111		}
112
113	218	$handle = $this->createTemporaryFile();
114	218	$path = stream_get_meta_data($handle)['uri'];
115
116	218	$this->bind($column, $path, DB2_PARAM_FILE, DB2_BINARY);
117
118	218	$this->lobs[$column] = [&$variable, $handle];
119	218	break;
120
121		default:
122	218	$this->bind($column, $variable, DB2_PARAM_IN, DB2_CHAR);
123	218	break;
124		}
125
126	218	return true;
127		}
128
129		/**
130		* @param int $position Parameter position
131		* @param mixed $variable
132		*
133		* @throws DB2Exception
134		*/
135	218	private function bind($position, &$variable, int $parameterType, int $dataType) : void
136		{
137	218	$this->bindParam[$position] =& $variable;
138
139	218	if (! db2_bind_param($this->stmt, $position, 'variable', $parameterType, $dataType)) {
140		throw new DB2Exception(db2_stmt_errormsg());
141		}
142	218	}
143
144		/**
145		* {@inheritdoc}
146		*/
147	122	public function closeCursor()
148		{
149	122	$this->bindParam = [];
150
151	122	if (! db2_free_result($this->stmt)) {
152		return false;
153		}
154
155	122	$this->result = false;
156
157	122	return true;
158		}
159
160		/**
161		* {@inheritdoc}
162		*/
163	122	public function columnCount()
164		{
165	122	return db2_num_fields($this->stmt) ?: 0;
166		}
167
168		/**
169		* {@inheritdoc}
170		*/
171		public function errorCode()
172		{
173		return db2_stmt_error();
174		}
175
176		/**
177		* {@inheritdoc}
178		*/
179		public function errorInfo()
180		{
181		return [
182		db2_stmt_errormsg(),
183		db2_stmt_error(),
184		];
185		}
186
187		/**
188		* {@inheritdoc}
189		*/
190	220	public function execute($params = null)
191		{
192	220	if ($params === null) {
193	220	ksort($this->bindParam);
194
195	220	$params = [];
196
197	220	foreach ($this->bindParam as $column => $value) {
198	218	$params[] = $value;
199		}
200		}
201
202	220	foreach ($this->lobs as [$source, $target]) {
203	218	if (is_resource($source)) {
204	217	$this->copyStreamToStream($source, $target);
205
206	217	continue;
207		}
208
209	218	$this->writeStringToStream($source, $target);
210		}
211
212	220	$retval = db2_execute($this->stmt, $params);
213
214	220	foreach ($this->lobs as [, $handle]) {
215	218	fclose($handle);
216		}
217
218	220	$this->lobs = [];
219
220	220	if ($retval === false) {
221		throw new DB2Exception(db2_stmt_errormsg());
222		}
223
224	220	$this->result = true;
225
226	220	return $retval;
227		}
228
229		/**
230		* {@inheritdoc}
231		*/
232	220	public function setFetchMode($fetchMode, $arg2 = null, $arg3 = null)
233		{
234	220	$this->defaultFetchMode = $fetchMode;
235	220	$this->defaultFetchClass = $arg2 ?: $this->defaultFetchClass;
236	220	$this->defaultFetchClassCtorArgs = $arg3 ? (array) $arg3 : $this->defaultFetchClassCtorArgs;
237
238	220	return true;
239		}
240
241		/**
242		* {@inheritdoc}
243		*/
244	220	public function getIterator()
245		{
246	220	return new StatementIterator($this);
247		}
248
249		/**
250		* {@inheritdoc}
251		*/
252	220	public function fetch($fetchMode = null, $cursorOrientation = PDO::FETCH_ORI_NEXT, $cursorOffset = 0)
253		{
254		// do not try fetching from the statement if it's not expected to contain result
255		// in order to prevent exceptional situation
256	220	if (! $this->result) {
257	47	return false;
258		}
259
260	220	$fetchMode = $fetchMode ?: $this->defaultFetchMode;
261	220	switch ($fetchMode) {
262		case FetchMode::COLUMN:
263	36	return $this->fetchColumn();
264
265		case FetchMode::MIXED:
266	205	return db2_fetch_both($this->stmt);
267
268		case FetchMode::ASSOCIATIVE:
269	220	return db2_fetch_assoc($this->stmt);
270
271		case FetchMode::CUSTOM_OBJECT:
272	160	$className = $this->defaultFetchClass;
273	160	$ctorArgs = $this->defaultFetchClassCtorArgs;
274
275	160	if (func_num_args() >= 2) {
276	160	$args = func_get_args();
277	160	$className = $args[1];
278	160	$ctorArgs = $args[2] ?? [];
279		}
280
281	160	$result = db2_fetch_object($this->stmt);
282
283	160	if ($result instanceof stdClass) {
284	160	$result = $this->castObject($result, $className, $ctorArgs);
285		}
286
287	160	return $result;
288
289		case FetchMode::NUMERIC:
290	217	return db2_fetch_array($this->stmt);
291
292		case FetchMode::STANDARD_OBJECT:
293	161	return db2_fetch_object($this->stmt);
294
295		default:
296		throw new DB2Exception('Given Fetch-Style ' . $fetchMode . ' is not supported.');
297		}
298		}
299
300		/**
301		* {@inheritdoc}
302		*/
303	220	public function fetchAll($fetchMode = null, $fetchArgument = null, $ctorArgs = null)
304		{
305	220	$rows = [];
306
307	220	switch ($fetchMode) {
308		case FetchMode::CUSTOM_OBJECT:
309	160	while (($row = $this->fetch(...func_get_args())) !== false) {
310	160	$rows[] = $row;
311		}
312	160	break;
313		case FetchMode::COLUMN:
314	217	while (($row = $this->fetchColumn()) !== false) {
315	217	$rows[] = $row;
316		}
317	217	break;
318		default:
319	220	while (($row = $this->fetch($fetchMode)) !== false) {
320	206	$rows[] = $row;
321		}
322		}
323
324	220	return $rows;
325		}
326
327		/**
328		* {@inheritdoc}
329		*/
330	217	public function fetchColumn($columnIndex = 0)
331		{
332	217	$row = $this->fetch(FetchMode::NUMERIC);
333
334	217	if ($row === false) {
335	217	return false;
336		}
337
338	217	return $row[$columnIndex] ?? null;
339		}
340
341		/**
342		* {@inheritdoc}
343		*/
344	218	public function rowCount()
345		{
346	218	return @db2_num_rows($this->stmt) ? : 0;
347		}
348
349		/**
350		* Casts a stdClass object to the given class name mapping its' properties.
351		*
352		* @param stdClass $sourceObject Object to cast from.
353		* @param string\|object $destinationClass Name of the class or class instance to cast to.
354		* @param mixed[] $ctorArgs Arguments to use for constructing the destination class instance.
355		*
356		* @return object
357		*
358		* @throws DB2Exception
359		*/
360	160	private function castObject(stdClass $sourceObject, $destinationClass, array $ctorArgs = [])
361		{
362	160	if (! is_string($destinationClass)) {
363		if (! is_object($destinationClass)) {
364		throw new DB2Exception(sprintf(
365		'Destination class has to be of type string or object, %s given.',
366		gettype($destinationClass)
367		));
368		}
369		} else {
370	160	$destinationClass = new ReflectionClass($destinationClass);
371	160	$destinationClass = $destinationClass->newInstanceArgs($ctorArgs);
372		}
373
374	160	$sourceReflection = new ReflectionObject($sourceObject);
375	160	$destinationClassReflection = new ReflectionObject($destinationClass);
376		/** @var ReflectionProperty[] $destinationProperties */
377	160	$destinationProperties = array_change_key_case($destinationClassReflection->getProperties(), CASE_LOWER);
378
379	160	foreach ($sourceReflection->getProperties() as $sourceProperty) {
380	160	$sourceProperty->setAccessible(true);
381
382	160	$name = $sourceProperty->getName();
383	160	$value = $sourceProperty->getValue($sourceObject);
384
385		// Try to find a case-matching property.
386	160	if ($destinationClassReflection->hasProperty($name)) {
387		$destinationProperty = $destinationClassReflection->getProperty($name);
388
389		$destinationProperty->setAccessible(true);
390		$destinationProperty->setValue($destinationClass, $value);
391
392		continue;
393		}
394
395	160	$name = strtolower($name);
396
397		// Try to find a property without matching case.
398		// Fallback for the driver returning either all uppercase or all lowercase column names.
399	160	if (isset($destinationProperties[$name])) {
400		$destinationProperty = $destinationProperties[$name];
401
402		$destinationProperty->setAccessible(true);
403		$destinationProperty->setValue($destinationClass, $value);
404
405		continue;
406		}
407
408	160	$destinationClass->$name = $value;
409		}
410
411	160	return $destinationClass;
412		}
413
414		/**
415		* @return resource
416		*
417		* @throws DB2Exception
418		*/
419	218	private function createTemporaryFile()
420		{
421	218	$handle = @tmpfile();
422
423	218	if ($handle === false) {
424		throw new DB2Exception('Could not create temporary file: ' . error_get_last()['message']);
425		}
426
427	218	return $handle;
428		}
429
430		/**
431		* @param resource $source
432		* @param resource $target
433		*
434		* @throws DB2Exception
435		*/
436	217	private function copyStreamToStream($source, $target) : void
437		{
438	217	if (@stream_copy_to_stream($source, $target) === false) {
439		throw new DB2Exception('Could not copy source stream to temporary file: ' . error_get_last()['message']);
440		}
441	217	}
442
443		/**
444		* @param resource $target
445		*
446		* @throws DB2Exception
447		*/
448	218	private function writeStringToStream(string $string, $target) : void
449		{
450	218	if (@fwrite($target, $string) === false) {
451		throw new DB2Exception('Could not write string to temporary file: ' . error_get_last()['message']);
452		}
453	218	}
454		}
455

doctrine / dbal

Push — 2.10 ( 39b76b...400f60 )

DB2Statement::bindValue() A

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