AbstractFactory::createClass() - Code Metrics - Inspection of "Resolver and map" - locomotivemtl/charcoal-factory - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 678c0d...3e10a5 )

by Mathieu

created 2016-05-26 04:13 UTC

AbstractFactory::createClass() A

↳ Parent: AbstractFactory

Complexity

Conditions	4
Paths	4

Size

Total Lines	16
Code Lines	10

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	16
rs	9.2
cc	4
eloc	10
nc	4
nop	2

<?php

namespace Charcoal\Factory;

// Dependencies from `PHP`
use \Exception;
use \InvalidArgumentException;

// Local namespace dependencies
use \Charcoal\Factory\FactoryInterface;
use \Charcoal\Factory\GenericResolver;

/**
 * Full implementation, as Abstract class, of the FactoryInterface.
 *
 * ## Class dependencies:
 *
 * | Name               | Type       | Description                            |
 * | ------------------ | ---------- | -------------------------------------- |
 * | `base_class`       | _string_   | Optional. A base class (or interface) to ensure a type of object.
 * | `default_class`    | _string_   | Optional. A default class, as fallback when the requested object is not resolvable.
 * | `arguments`        | _array_    | Optional. Constructor arguments that will be passed along to created instances.
 * | `callback`         | _Callable_ | Optional. A callback function that will be called upon object creation.
 * | `resolver`         | _Callable_ | Optional. A class resolver. If none is provided, a default will be used.
 * | `resolver_options` | _array_    | Optional. Resolver options (prefix, suffix, capitals and replacements). This is ignored / unused if `resolver` is provided.
 *
 */
abstract class AbstractFactory implements FactoryInterface
{
    /**
     * @var array $resolved
     */
    static protected $resolved = [];

    /**
     * If a base class is set, then it must be ensured that the
     * @var string $baseClass
     */
    private $baseClass = '';
    /**
     *
     * @var string $defaultClass
     */
    private $defaultClass = '';

    /**
     * @var array $arguments
     */
    private $arguments;

    /**
     * @var callable $callback
     */
    private $callback;

    /**
     * Keeps loaded instances in memory, in `[$type => $instance]` format.
     * Used with the `get()` method only.
     * @var array $instances
     */
    private $instances = [];

    /**
     * @var Callable $resolver
     */
    private $resolver;

    /**
     * The class map array holds available types, in `[$type => $className]` format.
     * @var string[] $map
     */
    private $map = [];

    /**
     * @param array $data Constructor dependencies.
     */
    public function __construct(array $data = null)
    {
        if (isset($data['base_class'])) {
            $this->setBaseClass($data['base_class']);
        }
        if (isset($data['default_class'])) {
            $this->setDefaultClass($data['default_class']);
        }
        if (isset($data['arguments'])) {
            $this->setArguments($data['arguments']);
        }
        if (isset($data['callback'])) {
            $this->setCallback($data['callback']);
        }

        if (!isset($data['resolver'])) {
            $opts = isset($data['resolver_options']) ? $data['resolver_options'] : null;
            $data['resolver'] = new GenericResolver($opts);
        }
        $this->setResolver($data['resolver']);

        if (isset($data['map'])) {
            $this->setMap($data['map']);
        }
    }

    /**
     * Create a new instance of a class, by type.
     *
     * Unlike `get()`, this method *always* return a new instance of the requested class.
     *
     * ## Object callback
     * It is possible to pass a callback method that will be executed upon object instanciation.
     * The callable should have a signature: `function($obj);` where $obj is the newly created object.
     *
     *
     * @param string   $type The type (class ident).
     * @param array    $args Optional. Constructor arguments (will override the arguments set on the class from constructor).
     * @param callable $cb   Optional. Object callback, called at creation. Leave blank to use `$callback` member.
     * @throws Exception If the base class is set and  the resulting instance is not of the base class.
     * @throws InvalidArgumentException If type argument is not a string or is not an available type.
     * @return mixed The instance / object
     */
    final public function create($type, array $args = null, callable $cb = null)
    {
        if (!is_string($type)) {
            throw new InvalidArgumentException(
                sprintf(
                    '%s: Type must be a string.',
                    get_called_class()
                )
            );
        }

        if (!isset($args)) {
            $args = $this->arguments();
        }

        if (!isset($cb)) {
            $cb = $this->callback();
        }

        $pool = get_called_class();
        if (isset(self::$resolved[$pool][$type])) {
            $classname = self::$resolved[$pool][$type];
        } else {
            if ($this->isResolvable($type) === false) {
                $defaultClass = $this->defaultClass();
                if ($defaultClass !== '') {
                    $obj = $this->createClass($defaultClass, $args);
$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}
                    $obj = new $defaultClass($args);
                    if (isset($cb)) {
                        $cb($obj);
                    }
                    return $obj;
                } else {
                    throw new InvalidArgumentException(
                        sprintf(
                            '%1$s: Type "%2$s" is not a valid type. (Using default class "%3$s")',
                            get_called_class(),
                            $type,
                            $defaultClass
                        )
                    );
                }
            }

            // Create the object from the type's class name.
            $classname = $this->resolve($type);
            self::$resolved[$pool][$type] = $classname;
        }

        $obj = $this->createClass($classname, $args);

        // Ensure base class is respected, if set.
        $baseClass = $this->baseClass();
        if ($baseClass !== '' && !($obj instanceof $baseClass)) {
            throw new Exception(
                sprintf(
                    '%1$s: Object is not a valid "%2$s" class',
                    get_called_class(),
                    $baseClass
                )
            );
        }

        if (isset($cb)) {
            $cb($obj);
        }

        return $obj;
    }

    /**
     * Create a class instance with given arguments.
     *
     * How the constructor arguments are passed depends on its type:
     *
     * - if null, no arguments are passed at all.
     * - if it's not an array, it's passed as a single argument.
     * - if it's an associative array, it's passed as a sing argument.
     * - if it's a sequential (numeric keys) array, it's
     *
     * @param string $classname The FQN of the class to instanciate.
     * @param mixed  $args      The constructor arguments.
     * @return mixed The created object.
     */
    protected function createClass($classname, $args)
    {
        if ($args === null) {
            return new $classname;
        }
        if (!is_array($args)) {
            return new $classname($args);
        }
        if (count(array_filter(array_keys($args), 'is_string')) > 0) {
            return new $classname($args);
        } else {
            // Use argument unpacking (`return new $classname(...$args);`) when minimum PHP requirement is bumped to 5.6.
            $reflection = new \ReflectionClass($classname);
            return $reflection->newInstanceArgs($args);
        }
    }

    /**
     * Get (load or create) an instance of a class, by type.
     *
     * Unlike `create()` (which always call a `new` instance), this function first tries to load / reuse
     * an already created object of this type, from memory.
     *
     * @param string $type The type (class ident).
     * @param array  $args The constructor arguments (optional).
     * @throws InvalidArgumentException If type argument is not a string.
     * @return mixed The instance / object
     */
    final public function get($type, array $args = null)
    {
        if (!is_string($type)) {
            throw new InvalidArgumentException(
                'Type must be a string.'
            );
        }
        if (!isset($this->instances[$type]) || $this->instances[$type] === null) {
            $this->instances[$type] = $this->create($type, $args);
        }
        return $this->instances[$type];
    }

    /**
     * @param callable $resolver The class resolver instance to use.
     * @return FactoryInterface Chainable
     */
    private function setResolver(callable $resolver)
    {
        $this->resolver = $resolver;
        return $this;
    }

    /**
     * @return callable
     */
    protected function resolver()
    {
        return $this->resolver;
    }

    /**
     * Add multiple types, in a an array of `type` => `className`.
     *
     * @param string[] $map The map (key=>classname) to use.
     * @return FactoryInterface Chainable
     */
    private function setMap(array $map)
    {
        // Resets (overwrites) map.
        $this->map = [];
        foreach ($map as $type => $className) {
            $this->addClassToMap($type, $className);
        }
        return $this;
    }

    /**
     * Get the map of all types in `[$type => $class]` format.
     *
     * @return string[]
     */
    protected function map()
    {
        return $this->map;
    }

    /**
     * Add a class name to the available types _map_.
     *
     * @param string $type      The type (class ident).
     * @param string $className The FQN of the class.
     * @throws InvalidArgumentException If the $type parameter is not a striing or the $className class does not exist.
     * @return FactoryInterface Chainable
     */
    protected function addClassToMap($type, $className)
    {
        if (!is_string($type)) {
            throw new InvalidArgumentException(
                'Type (class key) must be a string'
            );
        }

        $this->map[$type] = $className;
        return $this;
    }

    /**
     * If a base class is set, then it must be ensured that the created objects
     * are `instanceof` this base class.
     *
     * @param string $type The FQN of the class, or "type" of object, to set as base class.
     * @throws InvalidArgumentException If the class is not a string or is not an existing class / interface.
     * @return FactoryInterface Chainable
     */
    public function setBaseClass($type)
    {
        if (!is_string($type) || empty($type)) {
            throw new InvalidArgumentException(
                'Class name or type must be a non-empty string.'
            );
        }

        $exists = (class_exists($type) || interface_exists($type));
        if ($exists) {
            $classname = $type;
        } else {

            $classname = $this->resolve($type);

            $exists = (class_exists($classname) || interface_exists($classname));
            if (!$exists) {
                throw new InvalidArgumentException(
                    sprintf('Can not set "%s" as base class: Invalid class or interface name.', $classname)
                );
            }
        }

        $this->baseClass = $classname;

        return $this;
    }

    /**
     * @return string The FQN of the base class
     */
    public function baseClass()
    {
        return $this->baseClass;
    }

    /**
     * If a default class is set, then calling `get()` or `create()` an invalid type
     * should return an object of this class instead of throwing an error.
     *
     * @param string $type The FQN of the class, or "type" of object, to set as default class.
     * @throws InvalidArgumentException If the class name is not a string or not a valid class.
     * @return FactoryInterface Chainable
     */
    public function setDefaultClass($type)
    {
        if (!is_string($type) || empty($type)) {
            throw new InvalidArgumentException(
                'Class name or type must be a non-empty string.'
            );
        }

        if (class_exists($type)) {

            $classname = $type;
        } else {
            $classname = $this->resolve($type);

            if (!class_exists($classname)) {
                throw new InvalidArgumentException(
                    sprintf('Can not set "%s" as defaut class: Invalid class name.', $classname)
                );
            }
        }

        $this->defaultClass = $classname;

        return $this;
    }

    /**
     * @return string The FQN of the default class
     */
    public function defaultClass()
    {
        return $this->defaultClass;
    }

    /**
     * @param array $arguments The constructor arguments to be passed to the created object's initialization.
     * @return FactoryInterface Chainable
     */
    public function setArguments(array $arguments)
    {
        $this->arguments = $arguments;
        return $this;
    }

    /**
     * @return array
     */
    public function arguments()
    {
        return $this->arguments;
    }

    /**
     * @param callable $callback The object callback.
     * @return FactoryInterface Chainable
     */
    public function setCallback(callable $callback)
    {
        $this->callback = $callback;
        return $this;
    }

    /**
     * @return callable|null
     */
    public function callback()
    {
        return $this->callback;
    }

 /**
  * The Generic factory resolves the class name from an exact FQN.
  *
  * @param string $type The "type" of object to resolve (the object ident).
  * @throws InvalidArgumentException If the type parameter is not a string.
  * @return string The resolved class name (FQN).
  */
    public function resolve($type)
    {
        if (!is_string($type)) {
            throw new InvalidArgumentException(
                'Can not resolve class ident: type must be a string'
            );
        }

        $map = $this->map();
        if (isset($map[$type])) {
            $type = $map[$type];
        }

        if (class_exists($type)) {
            return $type;
        }

        $resolver = $this->resolver();
        $resolved = $resolver($type);
        return $resolved;
    }

    /**
     * Wether a `type` is resolvable. The Generic Factory simply checks if the _FQN_ `type` class exists.
     *
     * @param string $type The "type" of object to resolve (the object ident).
     * @throws InvalidArgumentException If the type parameter is not a string.
     * @return boolean
     */
    public function isResolvable($type)
    {
        if (!is_string($type)) {
            throw new InvalidArgumentException(
                'Can not check resolvable: type must be a string'
            );
        }

        $map = $this->map();
        if (isset($map[$type])) {
            $type = $map[$type];
        }

        if (class_exists($type)) {
            return true;
        }

        $resolver = $this->resolver();
        $resolved = $resolver($type);
        if (class_exists($resolved)) {
            return true;
        }

        return false;
    }
}


1		<?php
2
3		namespace Charcoal\Factory;
4
5		// Dependencies from `PHP`
6		use \Exception;
7		use \InvalidArgumentException;
8
9		// Local namespace dependencies
10		use \Charcoal\Factory\FactoryInterface;
11		use \Charcoal\Factory\GenericResolver;
12
13		/**
14		* Full implementation, as Abstract class, of the FactoryInterface.
15		*
16		* ## Class dependencies:
17		*
18		* \| Name \| Type \| Description \|
19		* \| ------------------ \| ---------- \| -------------------------------------- \|
20		* \| `base_class` \| _string_ \| Optional. A base class (or interface) to ensure a type of object.
21		* \| `default_class` \| _string_ \| Optional. A default class, as fallback when the requested object is not resolvable.
22		* \| `arguments` \| _array_ \| Optional. Constructor arguments that will be passed along to created instances.
23		* \| `callback` \| _Callable_ \| Optional. A callback function that will be called upon object creation.
24		* \| `resolver` \| _Callable_ \| Optional. A class resolver. If none is provided, a default will be used.
25		* \| `resolver_options` \| _array_ \| Optional. Resolver options (prefix, suffix, capitals and replacements). This is ignored / unused if `resolver` is provided.
26		*
27		*/
28		abstract class AbstractFactory implements FactoryInterface
29		{
30		/**
31		* @var array $resolved
32		*/
33		static protected $resolved = [];
34
35		/**
36		* If a base class is set, then it must be ensured that the
37		* @var string $baseClass
38		*/
39		private $baseClass = '';
40		/**
41		*
42		* @var string $defaultClass
43		*/
44		private $defaultClass = '';
45
46		/**
47		* @var array $arguments
48		*/
49		private $arguments;
50
51		/**
52		* @var callable $callback
53		*/
54		private $callback;
55
56		/**
57		* Keeps loaded instances in memory, in `[$type => $instance]` format.
58		* Used with the `get()` method only.
59		* @var array $instances
60		*/
61		private $instances = [];
62
63		/**
64		* @var Callable $resolver
65		*/
66		private $resolver;
67
68		/**
69		* The class map array holds available types, in `[$type => $className]` format.
70		* @var string[] $map
71		*/
72		private $map = [];
73
74		/**
75		* @param array $data Constructor dependencies.
76		*/
77		public function __construct(array $data = null)
78		{
79		if (isset($data['base_class'])) {
80		$this->setBaseClass($data['base_class']);
81		}
82		if (isset($data['default_class'])) {
83		$this->setDefaultClass($data['default_class']);
84		}
85		if (isset($data['arguments'])) {
86		$this->setArguments($data['arguments']);
87		}
88		if (isset($data['callback'])) {
89		$this->setCallback($data['callback']);
90		}
91
92		if (!isset($data['resolver'])) {
93		$opts = isset($data['resolver_options']) ? $data['resolver_options'] : null;
94		$data['resolver'] = new GenericResolver($opts);
95		}
96		$this->setResolver($data['resolver']);
97
98		if (isset($data['map'])) {
99		$this->setMap($data['map']);
100		}
101		}
102
103		/**
104		* Create a new instance of a class, by type.
105		*
106		* Unlike `get()`, this method always return a new instance of the requested class.
107		*
108		* ## Object callback
109		* It is possible to pass a callback method that will be executed upon object instanciation.
110		* The callable should have a signature: `function($obj);` where $obj is the newly created object.
111		*
112		*
113		* @param string $type The type (class ident).
114		* @param array $args Optional. Constructor arguments (will override the arguments set on the class from constructor).
115		* @param callable $cb Optional. Object callback, called at creation. Leave blank to use `$callback` member.
116		* @throws Exception If the base class is set and the resulting instance is not of the base class.
117		* @throws InvalidArgumentException If type argument is not a string or is not an available type.
118		* @return mixed The instance / object
119		*/
120		final public function create($type, array $args = null, callable $cb = null)
121		{
122		if (!is_string($type)) {
123		throw new InvalidArgumentException(
124		sprintf(
125		'%s: Type must be a string.',
126		get_called_class()
127		)
128		);
129		}
130
131		if (!isset($args)) {
132		$args = $this->arguments();
133		}
134
135		if (!isset($cb)) {
136		$cb = $this->callback();
137		}
138
139		$pool = get_called_class();
140		if (isset(self::$resolved[$pool][$type])) {
141		$classname = self::$resolved[$pool][$type];
142		} else {
143		if ($this->isResolvable($type) === false) {
144		$defaultClass = $this->defaultClass();
145		if ($defaultClass !== '') {
146		$obj = $this->createClass($defaultClass, $args);
		0 ignored issues – show Unused Code introduced 2016-05-18 11:53 UTC by Report Bug Copy Issue Report `$obj` is not used, you could remove the assignment. This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently. $myVar = 'Value'; $higher = false; if (rand(1, 6) > 3) { $higher = true; } else { $higher = false; } Both the `$myVar` assignment in line 1 and the `$higher` assignment in line 2 are dead. The first because `$myVar` is never used and the second because `$higher` is always overwritten for every possible time line. Loading history...
147		$obj = new $defaultClass($args);
148		if (isset($cb)) {
149		$cb($obj);
150		}
151		return $obj;
152		} else {
153		throw new InvalidArgumentException(
154		sprintf(
155		'%1$s: Type "%2$s" is not a valid type. (Using default class "%3$s")',
156		get_called_class(),
157		$type,
158		$defaultClass
159		)
160		);
161		}
162		}
163
164		// Create the object from the type's class name.
165		$classname = $this->resolve($type);
166		self::$resolved[$pool][$type] = $classname;
167		}
168
169		$obj = $this->createClass($classname, $args);
170
171		// Ensure base class is respected, if set.
172		$baseClass = $this->baseClass();
173		if ($baseClass !== '' && !($obj instanceof $baseClass)) {
174		throw new Exception(
175		sprintf(
176		'%1$s: Object is not a valid "%2$s" class',
177		get_called_class(),
178		$baseClass
179		)
180		);
181		}
182
183		if (isset($cb)) {
184		$cb($obj);
185		}
186
187		return $obj;
188		}
189
190		/**
191		* Create a class instance with given arguments.
192		*
193		* How the constructor arguments are passed depends on its type:
194		*
195		* - if null, no arguments are passed at all.
196		* - if it's not an array, it's passed as a single argument.
197		* - if it's an associative array, it's passed as a sing argument.
198		* - if it's a sequential (numeric keys) array, it's
199		*
200		* @param string $classname The FQN of the class to instanciate.
201		* @param mixed $args The constructor arguments.
202		* @return mixed The created object.
203		*/
204		protected function createClass($classname, $args)
205		{
206		if ($args === null) {
207		return new $classname;
208		}
209		if (!is_array($args)) {
210		return new $classname($args);
211		}
212		if (count(array_filter(array_keys($args), 'is_string')) > 0) {
213		return new $classname($args);
214		} else {
215		// Use argument unpacking (`return new $classname(...$args);`) when minimum PHP requirement is bumped to 5.6.
216		$reflection = new \ReflectionClass($classname);
217		return $reflection->newInstanceArgs($args);
218		}
219		}
220
221		/**
222		* Get (load or create) an instance of a class, by type.
223		*
224		* Unlike `create()` (which always call a `new` instance), this function first tries to load / reuse
225		* an already created object of this type, from memory.
226		*
227		* @param string $type The type (class ident).
228		* @param array $args The constructor arguments (optional).
229		* @throws InvalidArgumentException If type argument is not a string.
230		* @return mixed The instance / object
231		*/
232		final public function get($type, array $args = null)
233		{
234		if (!is_string($type)) {
235		throw new InvalidArgumentException(
236		'Type must be a string.'
237		);
238		}
239		if (!isset($this->instances[$type]) \|\| $this->instances[$type] === null) {
240		$this->instances[$type] = $this->create($type, $args);
241		}
242		return $this->instances[$type];
243		}
244
245		/**
246		* @param callable $resolver The class resolver instance to use.
247		* @return FactoryInterface Chainable
248		*/
249		private function setResolver(callable $resolver)
250		{
251		$this->resolver = $resolver;
252		return $this;
253		}
254
255		/**
256		* @return callable
257		*/
258		protected function resolver()
259		{
260		return $this->resolver;
261		}
262
263		/**
264		* Add multiple types, in a an array of `type` => `className`.
265		*
266		* @param string[] $map The map (key=>classname) to use.
267		* @return FactoryInterface Chainable
268		*/
269		private function setMap(array $map)
270		{
271		// Resets (overwrites) map.
272		$this->map = [];
273		foreach ($map as $type => $className) {
274		$this->addClassToMap($type, $className);
275		}
276		return $this;
277		}
278
279		/**
280		* Get the map of all types in `[$type => $class]` format.
281		*
282		* @return string[]
283		*/
284		protected function map()
285		{
286		return $this->map;
287		}
288
289		/**
290		* Add a class name to the available types _map_.
291		*
292		* @param string $type The type (class ident).
293		* @param string $className The FQN of the class.
294		* @throws InvalidArgumentException If the $type parameter is not a striing or the $className class does not exist.
295		* @return FactoryInterface Chainable
296		*/
297		protected function addClassToMap($type, $className)
298		{
299		if (!is_string($type)) {
300		throw new InvalidArgumentException(
301		'Type (class key) must be a string'
302		);
303		}
304
305		$this->map[$type] = $className;
306		return $this;
307		}
308
309		/**
310		* If a base class is set, then it must be ensured that the created objects
311		* are `instanceof` this base class.
312		*
313		* @param string $type The FQN of the class, or "type" of object, to set as base class.
314		* @throws InvalidArgumentException If the class is not a string or is not an existing class / interface.
315		* @return FactoryInterface Chainable
316		*/
317		public function setBaseClass($type)
318		{
319		if (!is_string($type) \|\| empty($type)) {
320		throw new InvalidArgumentException(
321		'Class name or type must be a non-empty string.'
322		);
323		}
324
325		$exists = (class_exists($type) \|\| interface_exists($type));
326		if ($exists) {
327		$classname = $type;
328	View Code Duplication	} else {
		0 ignored issues – show Duplication introduced 2015-12-08 18:26 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
329		$classname = $this->resolve($type);
330
331		$exists = (class_exists($classname) \|\| interface_exists($classname));
332		if (!$exists) {
333		throw new InvalidArgumentException(
334		sprintf('Can not set "%s" as base class: Invalid class or interface name.', $classname)
335		);
336		}
337		}
338
339		$this->baseClass = $classname;
340
341		return $this;
342		}
343
344		/**
345		* @return string The FQN of the base class
346		*/
347		public function baseClass()
348		{
349		return $this->baseClass;
350		}
351
352		/**
353		* If a default class is set, then calling `get()` or `create()` an invalid type
354		* should return an object of this class instead of throwing an error.
355		*
356		* @param string $type The FQN of the class, or "type" of object, to set as default class.
357		* @throws InvalidArgumentException If the class name is not a string or not a valid class.
358		* @return FactoryInterface Chainable
359		*/
360		public function setDefaultClass($type)
361		{
362		if (!is_string($type) \|\| empty($type)) {
363		throw new InvalidArgumentException(
364		'Class name or type must be a non-empty string.'
365		);
366		}
367
368	View Code Duplication	if (class_exists($type)) {
		0 ignored issues – show Duplication introduced 2015-12-08 18:26 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
369		$classname = $type;
370		} else {
371		$classname = $this->resolve($type);
372
373		if (!class_exists($classname)) {
374		throw new InvalidArgumentException(
375		sprintf('Can not set "%s" as defaut class: Invalid class name.', $classname)
376		);
377		}
378		}
379
380		$this->defaultClass = $classname;
381
382		return $this;
383		}
384
385		/**
386		* @return string The FQN of the default class
387		*/
388		public function defaultClass()
389		{
390		return $this->defaultClass;
391		}
392
393		/**
394		* @param array $arguments The constructor arguments to be passed to the created object's initialization.
395		* @return FactoryInterface Chainable
396		*/
397		public function setArguments(array $arguments)
398		{
399		$this->arguments = $arguments;
400		return $this;
401		}
402
403		/**
404		* @return array
405		*/
406		public function arguments()
407		{
408		return $this->arguments;
409		}
410
411		/**
412		* @param callable $callback The object callback.
413		* @return FactoryInterface Chainable
414		*/
415		public function setCallback(callable $callback)
416		{
417		$this->callback = $callback;
418		return $this;
419		}
420
421		/**
422		* @return callable\|null
423		*/
424		public function callback()
425		{
426		return $this->callback;
427		}
428
429		/**
430		* The Generic factory resolves the class name from an exact FQN.
431		*
432		* @param string $type The "type" of object to resolve (the object ident).
433		* @throws InvalidArgumentException If the type parameter is not a string.
434		* @return string The resolved class name (FQN).
435		*/
436		public function resolve($type)
437		{
438		if (!is_string($type)) {
439		throw new InvalidArgumentException(
440		'Can not resolve class ident: type must be a string'
441		);
442		}
443
444		$map = $this->map();
445		if (isset($map[$type])) {
446		$type = $map[$type];
447		}
448
449		if (class_exists($type)) {
450		return $type;
451		}
452
453		$resolver = $this->resolver();
454		$resolved = $resolver($type);
455		return $resolved;
456		}
457
458		/**
459		* Wether a `type` is resolvable. The Generic Factory simply checks if the _FQN_ `type` class exists.
460		*
461		* @param string $type The "type" of object to resolve (the object ident).
462		* @throws InvalidArgumentException If the type parameter is not a string.
463		* @return boolean
464		*/
465		public function isResolvable($type)
466		{
467		if (!is_string($type)) {
468		throw new InvalidArgumentException(
469		'Can not check resolvable: type must be a string'
470		);
471		}
472
473		$map = $this->map();
474		if (isset($map[$type])) {
475		$type = $map[$type];
476		}
477
478		if (class_exists($type)) {
479		return true;
480		}
481
482		$resolver = $this->resolver();
483		$resolved = $resolver($type);
484		if (class_exists($resolved)) {
485		return true;
486		}
487
488		return false;
489		}
490		}
491

locomotivemtl / charcoal-factory

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AbstractFactory::createClass() A

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