ObjectCache

The ObjectCache pattern is an extension to the CallbackCache pattern. It has the same methods, but instead caches output from any instance method calls or public properties.

Quick Start

use stdClass;
use Zend\Cache\PatternFactory;

$object      = new stdClass();
$objectCache = PatternFactory::factory('object', [
    'object'  => $object,
    'storage' => 'apc'
]);

Configuration Options

Available Methods

In addition to the methods defined in PatternInterface, this implementation defines the following methods.

namespace Zend\Cache\Pattern;

use Zend\Cache\Exception;

class ObjectCache extends CallbackCache
{
    /**
     * Call and cache a class method
     *
     * [@param](https://github.com/param)  string $method  Method name to call
     * [@param](https://github.com/param)  array  $args    Method arguments
     * [@return](https://github.com/return) mixed
     * [@throws](https://github.com/throws) Exception\RuntimeException
     * [@throws](https://github.com/throws) \Exception
     */
    public function call($method, array $args = []);

    /**
     * Method overloading: proxies to call().
     *
     * [@param](https://github.com/param)  string $method  Method name to call
     * [@param](https://github.com/param)  array  $args    Method arguments
     * [@return](https://github.com/return) mixed
     * [@throws](https://github.com/throws) Exception\RuntimeException
     * [@throws](https://github.com/throws) \Exception
     */
    public function __call($method, array $args);

    /**
     * Generate a unique key in base of a key representing the callback part
     * and a key representing the arguments part.
     *
     * [@param](https://github.com/param)  string     $method  The method
     * [@param](https://github.com/param)  array      $args    Callback arguments
     * [@return](https://github.com/return) string
     * [@throws](https://github.com/throws) Exception\RuntimeException
     */
    public function generateKey($method, array $args = []);

    /**
     * Property overloading: write data to a named property.
     *
     * NOTE:
     * Magic properties will be cached too if the option cacheMagicProperties
     * is enabled and the property doesn't exist in real. If so it calls __set
     * and removes cached data of previous __get and __isset calls.
     *
     * [@param](https://github.com/param)  string $name
     * [@param](https://github.com/param)  mixed  $value
     * [@return](https://github.com/return) void
     * [@see](https://github.com/see)    http://php.net/manual/language.oop5.overloading.php#language.oop5.overloading.members
     */
    public function __set($name, $value);

    /**
     * Property overloading: read data from a named property.
     *
     * NOTE:
     * Magic properties will be cached too if the option cacheMagicProperties
     * is enabled and the property doesn't exist in real. If so it calls __get.
     *
     * [@param](https://github.com/param)  string $name
     * [@return](https://github.com/return) mixed
     * [@see](https://github.com/see) http://php.net/manual/language.oop5.overloading.php#language.oop5.overloading.members
     */
    public function __get($name);

    /**
     * Property overloading: check if a named property exists.
     *
     * NOTE:
     * Magic properties will be cached too if the option cacheMagicProperties
     * is enabled and the property doesn't exist in real. If so it calls __get.
     *
     * [@param](https://github.com/param)  string $name
     * [@return](https://github.com/return) bool
     * [@see](https://github.com/see)    http://php.net/manual/language.oop5.overloading.php#language.oop5.overloading.members
     */
    public function __isset($name);

    /**
     * Property overloading: unset a named property.
     *
     * NOTE:
     * Magic properties will be cached too if the option cacheMagicProperties
     * is enabled and the property doesn't exist in real. If so it removes
     * previous cached __isset and __get calls.
     *
     * [@param](https://github.com/param)  string $name
     * [@return](https://github.com/return) void
     * [@see](https://github.com/see)    http://php.net/manual/language.oop5.overloading.php#language.oop5.overloading.members
     */
    public function __unset($name);

    /**
     * Handle casting to string
     *
     * [@return](https://github.com/return) string
     * [@see](https://github.com/see)    http://php.net/manual/language.oop5.magic.php#language.oop5.magic.tostring
     */
    public function __toString();

    /**
     * Intercept and cache invokable usage.
     *
     * [@return](https://github.com/return) mixed
     * [@see](https://github.com/see)    http://php.net/manual/language.oop5.magic.php#language.oop5.magic.invoke
     */
    public function __invoke();
}

Examples

Caching a Filter

$filter       = new Zend\Filter\RealPath();
$cachedFilter = Zend\Cache\PatternFactory::factory('object', [
    'object'     => $filter,
    'object_key' => 'RealpathFilter',
    'storage'    => 'apc',

    // The realpath filter doesn't output anything
    // so the output don't need to be caught and cached
    'cache_output' => false,
]);

$path = $cachedFilter->call("filter", ['/www/var/path/../../mypath']);

// OR
$path = $cachedFilter->filter('/www/var/path/../../mypath');