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<?php |
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/* |
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* This file is part of Transfer. |
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* |
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* For the full copyright and license information, please view the LICENSE file located |
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* in the root directory. |
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*/ |
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namespace Transfer\Procedure; |
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/** |
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* Procedure model. |
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*/ |
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class Procedure |
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{ |
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/** |
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* @var Procedure Parent procedure |
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*/ |
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protected $parent = null; |
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/** |
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* @var array Children |
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*/ |
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protected $children = array(); |
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/** |
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* @var string Procedure name |
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*/ |
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protected $name; |
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/** |
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* @var array Source collection |
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*/ |
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protected $sources = array(); |
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/** |
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* @var array Worker collection |
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*/ |
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protected $workers = array(); |
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/** |
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* @var array Target collection |
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*/ |
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protected $targets = array(); |
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/** |
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* @param string $name Procedure name |
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* @param array $sources Source collection |
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* @param array $workers Worker collection |
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* @param array $targets Target collection |
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* @param Procedure $parent Parent procedure |
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*/ |
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public function __construct($name = null, $sources = array(), $workers = array(), $targets = array(), Procedure $parent = null) |
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{ |
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$this->name = $name; |
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$this->sources = $sources; |
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$this->workers = $workers; |
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$this->targets = $targets; |
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$this->parent = $parent; |
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} |
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/** |
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* Creates a procedure from a definition. |
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* |
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* Procedure definition must be an array consisting of following elements: |
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* * name : string |
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* * sources : array of source adapters |
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* * workers : array of workers |
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* * targets : array of target adapters |
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* |
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* @param array $definition Procedure definition (how a procedure should be built) |
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* @param Procedure $parent Parent procedure |
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* |
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* @return Procedure |
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*/ |
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public static function createFromDefinition(array $definition, Procedure $parent = null) |
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{ |
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$procedure = new self( |
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$definition['name'], |
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$definition['sources'], |
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$definition['workers'], |
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$definition['targets'], |
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$parent |
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); |
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foreach ($definition['children'] as $child) { |
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$procedure->addChild(self::createFromDefinition($child, $procedure)); |
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} |
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return $procedure; |
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} |
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/** |
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* Returns parent procedure. |
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* |
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* @return Procedure Parent procedure |
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*/ |
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public function getParent() |
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{ |
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return $this->parent; |
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} |
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/** |
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* Returns procedure name. |
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* |
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* @return string Procedure name |
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*/ |
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public function getName() |
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{ |
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return $this->name; |
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} |
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/** |
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* Returns children. |
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* |
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* @return array Children procedures |
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*/ |
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public function getChildren() |
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{ |
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return $this->children; |
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} |
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/** |
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* Tests, if the procedure has children (sub-procedures). |
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* |
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* @return bool True, if procedure has children |
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*/ |
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public function hasChildren() |
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{ |
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return !empty($this->children); |
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} |
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/** |
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* Adds child procedure. |
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* |
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* @param Procedure $child Child procedure |
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*/ |
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public function addChild(Procedure $child) |
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{ |
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$this->children[] = $child; |
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} |
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/** |
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* Tests, if a (sub-)procedure exists. |
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* |
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* @param string|array $name Procedure name |
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* @param Procedure $context Current context |
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* @param int $level Current level |
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* |
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* @return bool True, if procedure exists |
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*/ |
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public function procedureExists($name, $context = null, $level = 0) |
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{ |
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$context = $this->normalizeContext($context); |
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if (!is_array($name)) { |
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$name = array($name); |
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} |
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/** @var Procedure $procedure */ |
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foreach ($context->getChildren() as $procedure) { |
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if ($procedure->getName() == $name[$level]) { |
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return true; |
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} |
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return $this->procedureExists($name, $procedure, $level++); |
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} |
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return false; |
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} |
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/** |
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* Returns source collection. |
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* |
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* @return array Source collection |
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*/ |
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public function getSources() |
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{ |
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return array_merge($this->sources, $this->getParentSettings('input')); |
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} |
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/** |
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* Returns worker collection. |
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* |
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* @return array Worker collection |
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*/ |
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public function getWorkers() |
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{ |
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return array_merge($this->workers, $this->getParentSettings('worker')); |
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} |
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/** |
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* Returns target collection. |
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* |
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* @return array Target collection |
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*/ |
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public function getTargets() |
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{ |
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return array_merge($this->targets, $this->getParentSettings('target')); |
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} |
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/** |
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* Returns parent settings. |
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* |
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* @param string $type Setting type (source, worker or target) |
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* @param Procedure $context |
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* |
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* @return array Setting collection |
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* |
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* @internal |
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*/ |
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private function getParentSettings($type, $context = null) |
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{ |
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$context = $this->normalizeContext($context); |
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$methods = array( |
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'source' => 'getSources', |
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'worker' => 'getWorkers', |
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'target' => 'getTargets', |
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); |
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if (!array_key_exists($type, $methods) || $context->getParent() === null) { |
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return array(); |
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} |
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$settings = array_merge( |
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$this->getParentComponentSettings($context->getParent(), $methods[$type]), |
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$this->getParentSettings($type, $context->getParent()) |
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); |
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return $settings; |
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} |
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/** |
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* @param Procedure $context |
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* @param string $method |
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* |
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* @return array |
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* |
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* @internal |
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*/ |
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private function getParentComponentSettings($context, $method) |
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{ |
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$settings = array(); |
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foreach (call_user_func(array($context, $method)) as $setting) { |
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$settings[] = $setting; |
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} |
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return $settings; |
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} |
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/** |
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* @param Procedure|null $context |
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* |
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* @return Procedure |
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* |
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* @internal |
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*/ |
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private function normalizeContext($context = null) |
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{ |
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if ($context === null) { |
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$context = $this; |
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} |
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return $context; |
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} |
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} |
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