InMemoryAdapter::getDataSet() - Code Metrics - Inspection of "Add InMemoryAdapter + unit test; add PDOAdapter un..." - Gixx/WebHemi - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 54b2f0...ccd642 )

by Gabor

created 2016-06-24 10:55 UTC

InMemoryAdapter::getDataSet() C

↳ Parent: InMemoryAdapter

Complexity

Conditions	7
Paths	3

Size

Total Lines	25
Code Lines	14

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	14
CRAP Score	7

Importance

Changes	2
Bugs	0	Features	1

Metric	Value
c	2
b	0
f	1
dl	0
loc	25
ccs	14
cts	14
cp	1
rs	6.7272
cc	7
eloc	14
nc	3
nop	3
crap	7

<?php
/**
 * WebHemi.
 *
 * PHP version 5.6
 *
 * @copyright 2012 - 2016 Gixx-web (http://www.gixx-web.com)
 * @license   https://opensource.org/licenses/MIT The MIT License (MIT)
 *
 * @link      http://www.gixx-web.com
 */
namespace WebHemi\Adapter\Data\InMemory;

use WebHemi\Adapter\Data\DataAdapterInterface;
use WebHemi\Adapter\Exception\InitException;
use WebHemi\Adapter\Exception\InvalidArgumentException;

/**
 * Class InMemoryAdapter.
 */
class InMemoryAdapter implements DataAdapterInterface
{
    const EXPRESSION_IN_ARRAY = 'in';
    const EXPRESSION_WILDCARD = 'like';

    /** @var array */
    private $dataStorage;
    /** @var string */
    private $dataGroup = 'default';
    /** @var string */
    private $idKey = 'id';

    /**
     * PDOAdapter constructor.
     *
     * @param mixed $dataStorage
     *
     * @throws InvalidArgumentException
     */
    public function __construct($dataStorage = null)
    {
        if (empty($dataStorage)) {
            $dataStorage = [];
        }

        if (!is_array($dataStorage)) {
            throw new InvalidArgumentException('The constructor parameter must be empty or an array.');
        }

        foreach ($dataStorage as $rowData) {
            if (!is_array($rowData)) {
                throw new InvalidArgumentException('The constructor parameter if present must be an array of arrays.');
            }
        }

        $this->dataStorage[$this->dataGroup] = $dataStorage;
    }

    /**
     * Returns the Data Storage instance.
     *
     * @return array
     */
    public function getDataStorage()
    {
        return $this->dataStorage;
    }

    /**
     * Set adapter data group.
     *
     * @param string $dataGroup
     *
     * @throws InitException
     *
     * @return InMemoryAdapter
     */
    public function setDataGroup($dataGroup)
    {
        // Allow to change only once.
        if ($this->dataGroup !== 'default') {
            throw new InitException('Can\'t re-initialize dataGroup property. Property is already set.');
        }

        $this->dataGroup = $dataGroup;

        // Copy all previous init data.
        $this->dataStorage[$dataGroup] = $this->dataStorage['default'];
        unset($this->dataStorage['default']);

        return $this;
    }

    /**
     * Set adapter ID key. For Databases this can be the Primary key. Only simple key is allowed.
     *
     * @param string $idKey
     *
     * @throws InitException
     *
     * @return $this
     */
    public function setIdKey($idKey)
    {
        // Allow to change only once.
        if ($this->idKey !== 'id') {
            throw new InitException('Can\'t re-initialize idKey property. Property is already set.');
        }

        $this->idKey = $idKey;

        return $this;
    }

    /**
     * Get exactly one "row" of data according to the expression.
     *
     * @param mixed $identifier
     *
     * @return array
     */
    public function getData($identifier)
    {
        $result = [];

        $dataStorage = $this->getDataStorage()[$this->dataGroup];

        if (isset($dataStorage[$identifier])) {
            $result = $dataStorage[$identifier];
        }

        return $result;
    }

    /**
     * Get a set of data according to the expression and the chunk.
     *
     * @param array $expression
     * @param int   $limit
     * @param int   $offset
     *
     * @return array
     */
    public function getDataSet(array $expression, $limit = null, $offset = null)
    {
        $result = [];

        $dataStorage = $this->getDataStorage()[$this->dataGroup];
        $limitCounter = 0;
        $offsetCounter = 0;

        foreach ($dataStorage as $data) {
            if ($this->isExpressionMatch($expression, $data)) {
                if (!is_null($limit) && $limitCounter >= $limit) {
                    break;
                }

                if (!is_null($offset) && $offsetCounter++ < $offset) {
                    continue;
                }

                $limitCounter++;
                $result[] = $data;
            }
        }

        return $result;
    }

    /**
     * Checks the data (row) array against the expressions.
     *
     * @param array $expression
     * @param array $data
     *
     * @return bool
     */
    private function isExpressionMatch(array $expression, array $data)
    {
        $match = true;

        foreach ($expression as $pattern => $subject) {
            $dataKey = '';

            switch ($this->getExpressionType($pattern, $dataKey)) {
                case self::EXPRESSION_WILDCARD:
                    $subject = str_replace('%', '.*', $subject);
                    $match = preg_match('/^' . $subject . '$/', $data[$dataKey]);
                    break;

                case self::EXPRESSION_IN_ARRAY:
                    $match = in_array($data[$dataKey], (array)$subject);
                    break;

                case '<':
                    $match = $data[$dataKey] < $subject;
                    break;

                case '<=':
                    $match = $data[$dataKey] <= $subject;
                    break;

                case '>':
                    $match = $data[$dataKey] > $subject;
                    break;

                case '>=':
                    $match = $data[$dataKey] >= $subject;
                    break;

                case '<>':
                    $match = $data[$dataKey] != $subject;
                    break;

                default:
                    $match = $data[$dataKey] == $subject;
            }

            // First false means some expression is failing for the data row, so the whole expression set is failing.
            if (!$match) {
                break;
            }
        }

        return (bool)$match;
    }

    /**
     * Gets expression type and also sets the expression subject.
     *
     * @param string $pattern
     * @param string $subject
     *
     * @return string
     */
    private function getExpressionType($pattern, &$subject)
    {
        $type = '=';
        $subject = $pattern;
        $matches = [];

        if (preg_match('/^(?P<subject>[^\s]+)\s+(?P<relation>(\<\>|\<=|\>=|=|\<|\>))\s+\?$/', $pattern, $matches)) {
            $type = $matches['relation'];
            $subject = $matches['subject'];
        } elseif (preg_match('/^(?P<subject>[^\s]+)\s+(?P<relation>LIKE)\s+\?$/', $pattern, $matches)) {
            $type = self::EXPRESSION_WILDCARD;
            $subject = $matches['subject'];
        } elseif (preg_match('/^(?P<subject>[^\s]+)\s+(?P<relation>IN)\s?\(?\?\)?$/', $pattern, $matches)) {
            $type = self::EXPRESSION_IN_ARRAY;
            $subject = $matches['subject'];
        }

        return $type;
    }



    /**
     * Get the number of matched data in the set according to the expression.
     *
     * @param array $expression
     *
     * @return int
     */
    public function getDataCardinality(array $expression)
    {
        $list = $this->getDataSet($expression);

        return count($list);
    }

    /**
     * Insert or update entity in the storage.
     *
     * @param mixed $identifier
     * @param array $data
     *
     * @return mixed The ID of the saved entity in the storage
     */
    public function saveData($identifier, array $data)
    {
        $dataStorage = $this->getDataStorage()[$this->dataGroup];

        if (empty($dataStorage) && empty($identifier)) {
            $identifier = 1;
        }

        if (empty($identifier)) {
            $keys = array_keys($dataStorage);
            $maxKey = array_pop($keys);

            if (is_numeric($maxKey)) {
                $identifier = (int) $maxKey + 1;
            } else {
                $identifier = $maxKey . '_1';
            }
        }

        // To make it sure, we always apply changes on the exact property.
        $this->dataStorage[$this->dataGroup][$identifier] = $data;

        return $identifier;
    }

    /**
     * Removes an entity from the storage.
     *
     * @param mixed $identifier
     *
     * @return bool
     */
    public function deleteData($identifier)
    {
        $result = false;
        $dataFound = $this->getData($identifier);
        if (!empty($dataFound)) {
            unset($this->dataStorage[$this->dataGroup][$identifier]);
            $result = true;
        }

        return $result;
    }
}


1		<?php
2		/**
3		* WebHemi.
4		*
5		* PHP version 5.6
6		*
7		* @copyright 2012 - 2016 Gixx-web (http://www.gixx-web.com)
8		* @license https://opensource.org/licenses/MIT The MIT License (MIT)
9		*
10		* @link http://www.gixx-web.com
11		*/
12		namespace WebHemi\Adapter\Data\InMemory;
13
14		use WebHemi\Adapter\Data\DataAdapterInterface;
15		use WebHemi\Adapter\Exception\InitException;
16		use WebHemi\Adapter\Exception\InvalidArgumentException;
17
18		/**
19		* Class InMemoryAdapter.
20		*/
21		class InMemoryAdapter implements DataAdapterInterface
22		{
23		const EXPRESSION_IN_ARRAY = 'in';
24		const EXPRESSION_WILDCARD = 'like';
25
26		/** @var array */
27		private $dataStorage;
28		/** @var string */
29		private $dataGroup = 'default';
30		/** @var string */
31		private $idKey = 'id';
32
33		/**
34		* PDOAdapter constructor.
35		*
36		* @param mixed $dataStorage
37		*
38		* @throws InvalidArgumentException
39		*/
40	12	public function __construct($dataStorage = null)
41		{
42	12	if (empty($dataStorage)) {
43	8	$dataStorage = [];
44		}
45
46	12	if (!is_array($dataStorage)) {
47	1	throw new InvalidArgumentException('The constructor parameter must be empty or an array.');
48		}
49
50	11	foreach ($dataStorage as $rowData) {
51	3	if (!is_array($rowData)) {
52	3	throw new InvalidArgumentException('The constructor parameter if present must be an array of arrays.');
53		}
54		}
55
56	10	$this->dataStorage[$this->dataGroup] = $dataStorage;
57	10	}
58
59		/**
60		* Returns the Data Storage instance.
61		*
62		* @return array
63		*/
64	9	public function getDataStorage()
65		{
66	9	return $this->dataStorage;
67		}
68
69		/**
70		* Set adapter data group.
71		*
72		* @param string $dataGroup
73		*
74		* @throws InitException
75		*
76		* @return InMemoryAdapter
77		*/
78	6	public function setDataGroup($dataGroup)
79		{
80		// Allow to change only once.
81	6	if ($this->dataGroup !== 'default') {
82	1	throw new InitException('Can\'t re-initialize dataGroup property. Property is already set.');
83		}
84
85	6	$this->dataGroup = $dataGroup;
86
87		// Copy all previous init data.
88	6	$this->dataStorage[$dataGroup] = $this->dataStorage['default'];
89	6	unset($this->dataStorage['default']);
90
91	6	return $this;
92		}
93
94		/**
95		* Set adapter ID key. For Databases this can be the Primary key. Only simple key is allowed.
96		*
97		* @param string $idKey
98		*
99		* @throws InitException
100		*
101		* @return $this
102		*/
103	6	public function setIdKey($idKey)
104		{
105		// Allow to change only once.
106	6	if ($this->idKey !== 'id') {
107	1	throw new InitException('Can\'t re-initialize idKey property. Property is already set.');
108		}
109
110	6	$this->idKey = $idKey;
111
112	6	return $this;
113		}
114
115		/**
116		* Get exactly one "row" of data according to the expression.
117		*
118		* @param mixed $identifier
119		*
120		* @return array
121		*/
122	2	public function getData($identifier)
123		{
124	2	$result = [];
125
126	2	$dataStorage = $this->getDataStorage()[$this->dataGroup];
127
128	2	if (isset($dataStorage[$identifier])) {
129	2	$result = $dataStorage[$identifier];
130		}
131
132	2	return $result;
133		}
134
135		/**
136		* Get a set of data according to the expression and the chunk.
137		*
138		* @param array $expression
139		* @param int $limit
140		* @param int $offset
141		*
142		* @return array
143		*/
144	2	public function getDataSet(array $expression, $limit = null, $offset = null)
145		{
146	2	$result = [];
147
148	2	$dataStorage = $this->getDataStorage()[$this->dataGroup];
149	2	$limitCounter = 0;
150	2	$offsetCounter = 0;
151
152	2	foreach ($dataStorage as $data) {
153	2	if ($this->isExpressionMatch($expression, $data)) {
154	2	if (!is_null($limit) && $limitCounter >= $limit) {
155	1	break;
156		}
157
158	2	if (!is_null($offset) && $offsetCounter++ < $offset) {
159	2	continue;
160		}
161
162	2	$limitCounter++;
163	2	$result[] = $data;
164		}
165		}
166
167	2	return $result;
168		}
169
170		/**
171		* Checks the data (row) array against the expressions.
172		*
173		* @param array $expression
174		* @param array $data
175		*
176		* @return bool
177		*/
178	2	private function isExpressionMatch(array $expression, array $data)
179		{
180	2	$match = true;
181
182	2	foreach ($expression as $pattern => $subject) {
183	1	$dataKey = '';
184
185	1	switch ($this->getExpressionType($pattern, $dataKey)) {
186	1	case self::EXPRESSION_WILDCARD:
187	1	$subject = str_replace('%', '.*', $subject);
188	1	$match = preg_match('/^' . $subject . '$/', $data[$dataKey]);
189	1	break;
190
191	1	case self::EXPRESSION_IN_ARRAY:
192	1	$match = in_array($data[$dataKey], (array)$subject);
193	1	break;
194
195	1	case '<':
196	1	$match = $data[$dataKey] < $subject;
197	1	break;
198
199	1	case '<=':
200	1	$match = $data[$dataKey] <= $subject;
201	1	break;
202
203	1	case '>':
204	1	$match = $data[$dataKey] > $subject;
205	1	break;
206
207	1	case '>=':
208	1	$match = $data[$dataKey] >= $subject;
209	1	break;
210
211	1	case '<>':
212	1	$match = $data[$dataKey] != $subject;
213	1	break;
214
215		default:
216	1	$match = $data[$dataKey] == $subject;
217		}
218
219		// First false means some expression is failing for the data row, so the whole expression set is failing.
220	1	if (!$match) {
221	1	break;
222		}
223		}
224
225	2	return (bool)$match;
226		}
227
228		/**
229		* Gets expression type and also sets the expression subject.
230		*
231		* @param string $pattern
232		* @param string $subject
233		*
234		* @return string
235		*/
236	1	private function getExpressionType($pattern, &$subject)
237		{
238	1	$type = '=';
239	1	$subject = $pattern;
240	1	$matches = [];
241
242	1	if (preg_match('/^(?P<subject>[^\s]+)\s+(?P<relation>(\<\>\|\<=\|\>=\|=\|\<\|\>))\s+\?$/', $pattern, $matches)) {
243	1	$type = $matches['relation'];
244	1	$subject = $matches['subject'];
245	1	} elseif (preg_match('/^(?P<subject>[^\s]+)\s+(?P<relation>LIKE)\s+\?$/', $pattern, $matches)) {
246	1	$type = self::EXPRESSION_WILDCARD;
247	1	$subject = $matches['subject'];
248	1	} elseif (preg_match('/^(?P<subject>[^\s]+)\s+(?P<relation>IN)\s?\(?\?\)?$/', $pattern, $matches)) {
249	1	$type = self::EXPRESSION_IN_ARRAY;
250	1	$subject = $matches['subject'];
251		}
252
253	1	return $type;
254		}
255
256
257
258		/**
259		* Get the number of matched data in the set according to the expression.
260		*
261		* @param array $expression
262		*
263		* @return int
264		*/
265	1	public function getDataCardinality(array $expression)
266		{
267	1	$list = $this->getDataSet($expression);
268
269	1	return count($list);
270		}
271
272		/**
273		* Insert or update entity in the storage.
274		*
275		* @param mixed $identifier
276		* @param array $data
277		*
278		* @return mixed The ID of the saved entity in the storage
279		*/
280	5	public function saveData($identifier, array $data)
281		{
282	5	$dataStorage = $this->getDataStorage()[$this->dataGroup];
283
284	5	if (empty($dataStorage) && empty($identifier)) {
285	5	$identifier = 1;
286		}
287
288	5	if (empty($identifier)) {
289	5	$keys = array_keys($dataStorage);
290	5	$maxKey = array_pop($keys);
291
292	5	if (is_numeric($maxKey)) {
293	5	$identifier = (int) $maxKey + 1;
294		} else {
295	1	$identifier = $maxKey . '_1';
296		}
297		}
298
299		// To make it sure, we always apply changes on the exact property.
300	5	$this->dataStorage[$this->dataGroup][$identifier] = $data;
301
302	5	return $identifier;
303		}
304
305		/**
306		* Removes an entity from the storage.
307		*
308		* @param mixed $identifier
309		*
310		* @return bool
311		*/
312	1	public function deleteData($identifier)
313		{
314	1	$result = false;
315	1	$dataFound = $this->getData($identifier);
316	1	if (!empty($dataFound)) {
317	1	unset($this->dataStorage[$this->dataGroup][$identifier]);
318	1	$result = true;
319		}
320
321	1	return $result;
322		}
323		}
324

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InMemoryAdapter::getDataSet() C

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