Maslosoft Embedi API

Namespaces

• Maslosoft
  • EmbeDi
    • Adapters
    • Interfaces
    • Managers
    • Storage
    • Traits

Traits

• FlyTrait

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<?php

/**
 * This software package is licensed under `AGPL, Commercial` license[s].
 *
 * @package maslosoft/embedi
 * @license AGPL, Commercial
 *
 * @copyright Copyright (c) Peter Maselkowski <pmaselkowski@gmail.com>
 *
 */

namespace Maslosoft\EmbeDi\Traits;

use Exception;

trait FlyTrait
{

    private static $instances = [];

    /**
     * Get flyweight instance of component
     * @param string $instanceId
     * @return static
     * @throws Exception
     */
    public static function fly($instanceId = null)
    {
        if (null === $instanceId)
        {
            if (!defined(sprintf('%s::%s', static::class, 'DefaultInstanceId')))
            {
                throw new Exception(sprintf('Class `%s` must define constant `%s` (%1$s::%2$s)', static::class, 'DefaultInstanceId'));
            }
            $instanceId = static::DefaultInstanceId;
        }
        if (!isset(self::$instances[static::class][$instanceId]))
        {
            self::$instances[static::class][$instanceId] = new static($instanceId);
        }
        return self::$instances[static::class][$instanceId];
    }

}