Indexable::buildCallback() - Code Metrics - Inspection of "Global flag to disable object indexing (for long i..." - FriendsOfSymfony/FOSElasticaBundle - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#1145)

unknown

created 2016-09-21 12:49 UTC

Indexable::buildCallback() C

↳ Parent: Indexable

Complexity

Conditions	7
Paths	5

Size

Total Lines	22
Code Lines	11

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	11
CRAP Score	7

Importance

Changes

Metric	Value
dl	0
loc	22
c	0
b	0
f	0
ccs	11
cts	11
cp	1
rs	6.9811
cc	7
eloc	11
nc	5
nop	2
crap	7

<?php

/**
 * This file is part of the FOSElasticaBundle project.
 *
 * (c) FriendsOfSymfony <https://github.com/FriendsOfSymfony/FOSElasticaBundle/graphs/contributors>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace FOS\ElasticaBundle\Provider;

use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\ExpressionLanguage\Expression;
use Symfony\Component\ExpressionLanguage\ExpressionLanguage;
use Symfony\Component\ExpressionLanguage\SyntaxError;
use Symfony\Component\PropertyAccess\PropertyAccess;
use Symfony\Component\PropertyAccess\PropertyAccessorInterface;

class Indexable implements IndexableInterface
{
    /**
     * An array of raw configured callbacks for all types.
     *
     * @var array
     */
    private $callbacks = array();

    /**
     * @var \Symfony\Component\DependencyInjection\ContainerInterface
     */
    private $container;

    /**
     * An instance of ExpressionLanguage.
     *
     * @var ExpressionLanguage
     */
    private $expressionLanguage;

    /**
     * An array of initialised callbacks.
     *
     * @var array
     */
    private $initialisedCallbacks = array();

    /**
     * PropertyAccessor instance.
     *
     * @var PropertyAccessorInterface
     */
    private $propertyAccessor;

    /**
     * @var bool
     */
    private $indexingEnabled = true;

    /**
     * @param array $callbacks
     * @param ContainerInterface $container
     */
    public function __construct(array $callbacks, ContainerInterface $container)
    {
        $this->callbacks = $callbacks;
        $this->container = $container;
        $this->propertyAccessor = PropertyAccess::createPropertyAccessor();
    }

    /**
     * Return whether the object is indexable with respect to the callback.
     *
     * @param string $indexName
     * @param string $typeName
     * @param mixed  $object
     *
     * @return bool
     */
    public function isObjectIndexable($indexName, $typeName, $object)
    {
        if(!$this->indexingEnabled) {
            return false;
        }

        $type = sprintf('%s/%s', $indexName, $typeName);
        $callback = $this->getCallback($type, $object);
        if (!$callback) {
            return true;
        }

        if ($callback instanceof Expression) {
            return (bool) $this->getExpressionLanguage()->evaluate($callback, array(
                'object' => $object,
                $this->getExpressionVar($object) => $object,
            ));
        }

        return is_string($callback)
            ? call_user_func(array($object, $callback))
            : call_user_func($callback, $object);
    }

    /**
     * Returns true if global indexing is enabled, false otherwise.
     * 
     * @return bool
     */
    public function isIndexingEnabled()
    {
        return $this->indexingEnabled;
    }

    /**
     * Sets global indexing.
     * 
     * @param bool $indexingEnabled
     */
    public function setIndexingEnabled($indexingEnabled)
    {
        $this->indexingEnabled = $indexingEnabled;
    }
    
    /**
     * Builds and initialises a callback.
     *
     * @param string $type
     * @param object $object
     *
     * @return mixed
     */
    private function buildCallback($type, $object)
    {
        if (!array_key_exists($type, $this->callbacks)) {
            return;
        }

        $callback = $this->callbacks[$type];

        if (is_callable($callback) or is_callable(array($object, $callback))) {
            return $callback;
        }

        if (is_array($callback) && !is_object($callback[0])) {
            return $this->processArrayToCallback($type, $callback);
        }

        if (is_string($callback)) {
            return $this->buildExpressionCallback($type, $object, $callback);
        }

        throw new \InvalidArgumentException(sprintf('Callback for type "%s" is not a valid callback.', $type));
    }

    /**
     * Processes a string expression into an Expression.
     *
     * @param string $type
     * @param mixed $object
     * @param string $callback
     *
     * @return Expression
     */
    private function buildExpressionCallback($type, $object, $callback)
    {
        $expression = $this->getExpressionLanguage();
        if (!$expression) {
            throw new \RuntimeException('Unable to process an expression without the ExpressionLanguage component.');
        }

        try {
            $callback = new Expression($callback);
            $expression->compile($callback, array(
                'object', $this->getExpressionVar($object)
            ));

            return $callback;
        } catch (SyntaxError $e) {
            throw new \InvalidArgumentException(sprintf(
                'Callback for type "%s" is an invalid expression',
                $type
            ), $e->getCode(), $e);
        }
    }

    /**
     * Retreives a cached callback, or creates a new callback if one is not found.
     *
     * @param string $type
     * @param object $object
     *
     * @return mixed
     */
    private function getCallback($type, $object)
    {
        if (!array_key_exists($type, $this->initialisedCallbacks)) {
            $this->initialisedCallbacks[$type] = $this->buildCallback($type, $object);
        }

        return $this->initialisedCallbacks[$type];
    }

    /**
     * Returns the ExpressionLanguage class if it is available.
     *
     * @return ExpressionLanguage|null
     */
    private function getExpressionLanguage()
    {
        if (null === $this->expressionLanguage && class_exists('Symfony\Component\ExpressionLanguage\ExpressionLanguage')) {
            $this->expressionLanguage = new ExpressionLanguage();
        }

        return $this->expressionLanguage;
    }

    /**
     * Returns the variable name to be used to access the object when using the ExpressionLanguage
     * component to parse and evaluate an expression.
     *
     * @param mixed $object
     *
     * @return string
     */
    private function getExpressionVar($object = null)
    {
        if (!is_object($object)) {
            return 'object';
        }

        $ref = new \ReflectionClass($object);

        return strtolower($ref->getShortName());
    }

    /**
     * Processes an array into a callback. Replaces the first element with a service if
     * it begins with an @.
     *
     * @param string $type
     * @param array $callback
     *
     * @return array
     */
    private function processArrayToCallback($type, array $callback)
    {
        list($class, $method) = $callback + array(null, '__invoke');

        if (strpos($class, '@') === 0) {
            $service = $this->container->get(substr($class, 1));
            $callback = array($service, $method);

            if (!is_callable($callback)) {
                throw new \InvalidArgumentException(sprintf(
                    'Method "%s" on service "%s" is not callable.',
                    $method,
                    substr($class, 1)
                ));
            }

            return $callback;
        }

        throw new \InvalidArgumentException(sprintf(
            'Unable to parse callback array for type "%s"',
            $type
        ));
    }
}


1		<?php
2
3		/**
4		* This file is part of the FOSElasticaBundle project.
5		*
6		* (c) FriendsOfSymfony <https://github.com/FriendsOfSymfony/FOSElasticaBundle/graphs/contributors>
7		*
8		* For the full copyright and license information, please view the LICENSE
9		* file that was distributed with this source code.
10		*/
11
12		namespace FOS\ElasticaBundle\Provider;
13
14		use Symfony\Component\DependencyInjection\ContainerInterface;
15		use Symfony\Component\ExpressionLanguage\Expression;
16		use Symfony\Component\ExpressionLanguage\ExpressionLanguage;
17		use Symfony\Component\ExpressionLanguage\SyntaxError;
18		use Symfony\Component\PropertyAccess\PropertyAccess;
19		use Symfony\Component\PropertyAccess\PropertyAccessorInterface;
20
21		class Indexable implements IndexableInterface
22		{
23		/**
24		* An array of raw configured callbacks for all types.
25		*
26		* @var array
27		*/
28		private $callbacks = array();
29
30		/**
31		* @var \Symfony\Component\DependencyInjection\ContainerInterface
32		*/
33		private $container;
34
35		/**
36		* An instance of ExpressionLanguage.
37		*
38		* @var ExpressionLanguage
39		*/
40		private $expressionLanguage;
41
42		/**
43		* An array of initialised callbacks.
44		*
45		* @var array
46		*/
47		private $initialisedCallbacks = array();
48
49		/**
50		* PropertyAccessor instance.
51		*
52		* @var PropertyAccessorInterface
53		*/
54		private $propertyAccessor;
55
56		/**
57		* @var bool
58		*/
59		private $indexingEnabled = true;
60
61		/**
62		* @param array $callbacks
63		* @param ContainerInterface $container
64		*/
65	25	public function __construct(array $callbacks, ContainerInterface $container)
66		{
67	25	$this->callbacks = $callbacks;
68	25	$this->container = $container;
69	25	$this->propertyAccessor = PropertyAccess::createPropertyAccessor();
70	25	}
71
72		/**
73		* Return whether the object is indexable with respect to the callback.
74		*
75		* @param string $indexName
76		* @param string $typeName
77		* @param mixed $object
78		*
79		* @return bool
80		*/
81	18	public function isObjectIndexable($indexName, $typeName, $object)
82		{
83	18	if(!$this->indexingEnabled) {
84	1	return false;
85		}
86
87	17	$type = sprintf('%s/%s', $indexName, $typeName);
88	17	$callback = $this->getCallback($type, $object);
89	12	if (!$callback) {
90	1	return true;
91		}
92
93	11	if ($callback instanceof Expression) {
94	6	return (bool) $this->getExpressionLanguage()->evaluate($callback, array(
95	6	'object' => $object,
96	6	$this->getExpressionVar($object) => $object,
97		));
98		}
99
100	6	return is_string($callback)
101	2	? call_user_func(array($object, $callback))
102	6	: call_user_func($callback, $object);
103		}
104
105		/**
106		* Returns true if global indexing is enabled, false otherwise.
107		*
108		* @return bool
109		*/
110		public function isIndexingEnabled()
111		{
112		return $this->indexingEnabled;
113		}
114
115		/**
116		* Sets global indexing.
117		*
118		* @param bool $indexingEnabled
119		*/
120	1	public function setIndexingEnabled($indexingEnabled)
121		{
122	1	$this->indexingEnabled = $indexingEnabled;
123	1	}
124
125		/**
126		* Builds and initialises a callback.
127		*
128		* @param string $type
129		* @param object $object
130		*
131		* @return mixed
132		*/
133	17	private function buildCallback($type, $object)
134		{
135	17	if (!array_key_exists($type, $this->callbacks)) {
136	1	return;
137		}
138
139	16	$callback = $this->callbacks[$type];
140
141	16	if (is_callable($callback) or is_callable(array($object, $callback))) {
142	4	return $callback;
143		}
144
145	13	if (is_array($callback) && !is_object($callback[0])) {
146	4	return $this->processArrayToCallback($type, $callback);
147		}
148
149	10	if (is_string($callback)) {
150	8	return $this->buildExpressionCallback($type, $object, $callback);
151		}
152
153	2	throw new \InvalidArgumentException(sprintf('Callback for type "%s" is not a valid callback.', $type));
154		}
155
156		/**
157		* Processes a string expression into an Expression.
158		*
159		* @param string $type
160		* @param mixed $object
161		* @param string $callback
162		*
163		* @return Expression
164		*/
165	8	private function buildExpressionCallback($type, $object, $callback)
166		{
167	8	$expression = $this->getExpressionLanguage();
168	8	if (!$expression) {
169		throw new \RuntimeException('Unable to process an expression without the ExpressionLanguage component.');
170		}
171
172		try {
173	8	$callback = new Expression($callback);
174	8	$expression->compile($callback, array(
175	8	'object', $this->getExpressionVar($object)
176		));
177
178	6	return $callback;
179	2	} catch (SyntaxError $e) {
180	2	throw new \InvalidArgumentException(sprintf(
181	2	'Callback for type "%s" is an invalid expression',
182		$type
183	2	), $e->getCode(), $e);
184		}
185		}
186
187		/**
188		* Retreives a cached callback, or creates a new callback if one is not found.
189		*
190		* @param string $type
191		* @param object $object
192		*
193		* @return mixed
194		*/
195	17	private function getCallback($type, $object)
196		{
197	17	if (!array_key_exists($type, $this->initialisedCallbacks)) {
198	17	$this->initialisedCallbacks[$type] = $this->buildCallback($type, $object);
199		}
200
201	12	return $this->initialisedCallbacks[$type];
202		}
203
204		/**
205		* Returns the ExpressionLanguage class if it is available.
206		*
207		* @return ExpressionLanguage\|null
208		*/
209	8	private function getExpressionLanguage()
210		{
211	8	if (null === $this->expressionLanguage && class_exists('Symfony\Component\ExpressionLanguage\ExpressionLanguage')) {
212	8	$this->expressionLanguage = new ExpressionLanguage();
213		}
214
215	8	return $this->expressionLanguage;
216		}
217
218		/**
219		* Returns the variable name to be used to access the object when using the ExpressionLanguage
220		* component to parse and evaluate an expression.
221		*
222		* @param mixed $object
223		*
224		* @return string
225		*/
226	8	private function getExpressionVar($object = null)
227		{
228	8	if (!is_object($object)) {
229		return 'object';
230		}
231
232	8	$ref = new \ReflectionClass($object);
233
234	8	return strtolower($ref->getShortName());
235		}
236
237		/**
238		* Processes an array into a callback. Replaces the first element with a service if
239		* it begins with an @.
240		*
241		* @param string $type
242		* @param array $callback
243		*
244		* @return array
245		*/
246	4	private function processArrayToCallback($type, array $callback)
247		{
248	4	list($class, $method) = $callback + array(null, '__invoke');
249
250	4	if (strpos($class, '@') === 0) {
251	4	$service = $this->container->get(substr($class, 1));
252	4	$callback = array($service, $method);
253
254	4	if (!is_callable($callback)) {
255	1	throw new \InvalidArgumentException(sprintf(
256	1	'Method "%s" on service "%s" is not callable.',
257		$method,
258	1	substr($class, 1)
259		));
260		}
261
262	3	return $callback;
263		}
264
265		throw new \InvalidArgumentException(sprintf(
266		'Unable to parse callback array for type "%s"',
267		$type
268		));
269		}
270		}
271

FriendsOfSymfony / FOSElasticaBundle

Pull Request — master (#1145)

Indexable::buildCallback() C

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