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- 28.08.2024
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LazyLoadingGhostFactory.php
01 <?php
02
03 declare(strict_types=1);
04
05 namespace ProxyManager\Factory;
06
07 use Closure;
08 use ProxyManager\Proxy\GhostObjectInterface;
09 use ProxyManager\ProxyGenerator\LazyLoadingGhostGenerator;
10 use ProxyManager\ProxyGenerator\ProxyGeneratorInterface;
11 use ProxyManager\Signature\Exception\InvalidSignatureException;
12 use ProxyManager\Signature\Exception\MissingSignatureException;
13
14 /**
15 * Factory responsible of producing ghost instances
16 *
17 * @author Marco Pivetta <ocramius@gmail.com>
18 * @license MIT
19 */
20 class LazyLoadingGhostFactory extends AbstractBaseFactory
21 {
22 /**
23 * @var \ProxyManager\ProxyGenerator\LazyLoadingGhostGenerator|null
24 */
25 private $generator;
26
27 /**
28 * {@inheritDoc}
29 */
30 protected function getGenerator() : ProxyGeneratorInterface
31 {
32 return $this->generator ?: $this->generator = new LazyLoadingGhostGenerator();
33 }
34
35 /**
36 * Creates a new lazy proxy instance of the given class with
37 * the given initializer
38 *
39 * Please refer to the following documentation when using this method:
40 *
41 * @link https://github.com/Ocramius/ProxyManager/blob/master/docs/lazy-loading-ghost-object.md
42 *
43 * @param string $className name of the class to be proxied
44 * @param Closure $initializer initializer to be passed to the proxy. The initializer closure should have following
45 * signature:
46 *
47 * <code>
48 * $initializer = function (
49 * GhostObjectInterface $proxy,
50 * string $method,
51 * array $parameters,
52 * & $initializer,
53 * array $properties
54 * ) {};
55 * </code>
56 *
57 * Where:
58 * - $proxy is the proxy instance on which the initializer is acting
59 * - $method is the name of the method that triggered the lazy initialization
60 * - $parameters are the parameters that were passed to $method
61 * - $initializer by-ref initializer - should be assigned null in the initializer body
62 * - $properties a by-ref map of the properties of the object, indexed by PHP
63 * internal property name. Assign values to it to initialize the
64 * object state
65 *
66 * @param mixed[] $proxyOptions a set of options to be used when generating the proxy. Currently supports only
67 * key "skippedProperties", which allows to skip lazy-loading of some properties.
68 * "skippedProperties" is a string[], containing a list of properties referenced
69 * via PHP's internal property name (i.e. "\0ClassName\0propertyName")
70 *
71 * @throws MissingSignatureException
72 * @throws InvalidSignatureException
73 * @throws \OutOfBoundsException
74 */
75 public function createProxy(
76 string $className,
77 Closure $initializer,
78 array $proxyOptions = []
79 ) : GhostObjectInterface {
80 $proxyClassName = $this->generateProxy($className, $proxyOptions);
81
82 return $proxyClassName::staticProxyConstructor($initializer);
83 }
84 }
85