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C CakePHP 2.4 API

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  • TaskCollection
  1: <?php
  2: /**
  3:  * Task collection is used as a registry for loaded tasks and handles loading
  4:  * and constructing task class objects.
  5:  *
  6:  * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
  7:  * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
  8:  *
  9:  * Licensed under The MIT License
 10:  * For full copyright and license information, please see the LICENSE.txt
 11:  * Redistributions of files must retain the above copyright notice.
 12:  *
 13:  * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 14:  * @link          http://cakephp.org CakePHP(tm) Project
 15:  * @since         CakePHP(tm) v 2.0
 16:  * @license       http://www.opensource.org/licenses/mit-license.php MIT License
 17:  */
 18: 
 19: App::uses('ObjectCollection', 'Utility');
 20: 
 21: /**
 22:  * Collection object for Tasks. Provides features
 23:  * for lazily loading tasks, and firing callbacks on loaded tasks.
 24:  *
 25:  * @package       Cake.Console
 26:  */
 27: class TaskCollection extends ObjectCollection {
 28: 
 29: /**
 30:  * Shell to use to set params to tasks.
 31:  *
 32:  * @var Shell
 33:  */
 34:     protected $_Shell;
 35: 
 36: /**
 37:  * The directory inside each shell path that contains tasks.
 38:  *
 39:  * @var string
 40:  */
 41:     public $taskPathPrefix = 'tasks/';
 42: 
 43: /**
 44:  * Constructor
 45:  *
 46:  * @param Shell $Shell
 47:  */
 48:     public function __construct(Shell $Shell) {
 49:         $this->_Shell = $Shell;
 50:     }
 51: 
 52: /**
 53:  * Loads/constructs a task. Will return the instance in the registry if it already exists.
 54:  *
 55:  * You can alias your task as an existing task by setting the 'className' key, i.e.,
 56:  * {{{
 57:  * public $tasks = array(
 58:  * 'DbConfig' => array(
 59:  * 'className' => 'Bakeplus.DbConfigure'
 60:  * );
 61:  * );
 62:  * }}}
 63:  * All calls to the `DbConfig` task would use `DbConfigure` found in the `Bakeplus` plugin instead.
 64:  *
 65:  * @param string $task Task name to load
 66:  * @param array $settings Settings for the task.
 67:  * @return Task A task object, Either the existing loaded task or a new one.
 68:  * @throws MissingTaskException when the task could not be found
 69:  */
 70:     public function load($task, $settings = array()) {
 71:         if (is_array($settings) && isset($settings['className'])) {
 72:             $alias = $task;
 73:             $task = $settings['className'];
 74:         }
 75:         list($plugin, $name) = pluginSplit($task, true);
 76:         if (!isset($alias)) {
 77:             $alias = $name;
 78:         }
 79: 
 80:         if (isset($this->_loaded[$alias])) {
 81:             return $this->_loaded[$alias];
 82:         }
 83:         $taskClass = $name . 'Task';
 84:         App::uses($taskClass, $plugin . 'Console/Command/Task');
 85: 
 86:         $exists = class_exists($taskClass);
 87:         if (!$exists) {
 88:             throw new MissingTaskException(array(
 89:                 'class' => $taskClass,
 90:                 'plugin' => substr($plugin, 0, -1)
 91:             ));
 92:         }
 93: 
 94:         $this->_loaded[$alias] = new $taskClass(
 95:             $this->_Shell->stdout, $this->_Shell->stderr, $this->_Shell->stdin
 96:         );
 97:         return $this->_loaded[$alias];
 98:     }
 99: 
100: }
101: 
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