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<?php |
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/** |
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* Workflow library. |
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* |
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* @package workflow |
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* @author David Molineus <[email protected]> |
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* @copyright 2014-2017 netzmacht David Molineus |
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* @license LGPL 3.0 https://github.com/netzmacht/workflow |
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* @filesource |
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*/ |
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declare(strict_types=1); |
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namespace Netzmacht\Workflow\Flow; |
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use Netzmacht\Workflow\Data\ErrorCollection; |
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use Netzmacht\Workflow\Security\Permission; |
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use Netzmacht\Workflow\Base; |
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use Netzmacht\Workflow\Flow\Condition\Transition\AndCondition; |
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use Netzmacht\Workflow\Flow\Condition\Transition\Condition; |
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use Netzmacht\Workflow\Flow\Exception\ActionFailedException; |
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/** |
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* Class Transition handles the transition from a step to another. |
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* |
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* @package Netzmacht\Workflow\Flow |
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* @SuppressWarnings(PHPMD.TooManyPublicMethods) |
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*/ |
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class Transition extends Base |
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{ |
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/** |
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* Actions which will be executed during the transition. |
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* |
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* @var Action[] |
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*/ |
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private $actions = array(); |
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/** |
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* Post actions which will be executed when new step is reached. |
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* |
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* @var Action[] |
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*/ |
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private $postActions = array(); |
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/** |
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* The step the transition is moving to. |
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* |
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* @var Step |
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*/ |
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private $stepTo; |
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/** |
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* A pre condition which has to be passed to execute transition. |
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* |
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* @var AndCondition |
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*/ |
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private $preCondition; |
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/** |
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* A condition which has to be passed to execute the transition. |
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* |
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* @var AndCondition |
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*/ |
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private $condition; |
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/** |
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* A set of permission being assigned to the transition. |
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* |
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* @var Permission|null |
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*/ |
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private $permission; |
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/** |
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* The corresponding workflow. |
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* |
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* @var Workflow |
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*/ |
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private $workflow; |
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/** |
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* Transition constructor. |
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* |
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* @param string $name Name of the element. |
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* @param Workflow $workflow The workflow to which the transition belongs. |
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* @param Step $stepTo The target step. |
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* @param string $label Label of the element. |
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* @param array $config Configuration values. |
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*/ |
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public function __construct($name, Workflow $workflow, Step $stepTo, $label = null, array $config = []) |
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{ |
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parent::__construct($name, $label, $config); |
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$workflow->addTransition($this); |
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$this->workflow = $workflow; |
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$this->stepTo = $stepTo; |
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} |
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/** |
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* Get the workflow. |
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* |
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* @return Workflow |
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*/ |
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public function getWorkflow(): Workflow |
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{ |
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return $this->workflow; |
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} |
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/** |
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* Add an action to the transition. |
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* |
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* @param Action $action The added action. |
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* |
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* @return $this |
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*/ |
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public function addAction(Action $action): self |
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{ |
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$this->actions[] = $action; |
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return $this; |
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} |
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/** |
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* Get all actions. |
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* |
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* @return Action[]|iterable |
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*/ |
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public function getActions(): iterable |
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{ |
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return $this->actions; |
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} |
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/** |
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* Add an post action to the transition. |
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* |
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* @param Action $action The added action. |
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* |
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* @return $this |
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*/ |
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public function addPostAction(Action $action): self |
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{ |
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$this->postActions[] = $action; |
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return $this; |
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} |
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/** |
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* Get all post actions. |
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* |
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* @return Action[]|iterable |
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*/ |
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public function getPostActions(): iterable |
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{ |
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return $this->postActions; |
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} |
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/** |
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* Get the target step. |
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* |
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* @return Step |
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*/ |
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public function getStepTo():? Step |
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{ |
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return $this->stepTo; |
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} |
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/** |
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* Get the condition. |
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* |
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* @return Condition|null |
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*/ |
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public function getCondition():? Condition |
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{ |
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return $this->condition; |
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} |
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/** |
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* Add a condition. |
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* |
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* @param Condition $condition The new condition. |
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* |
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* @return $this |
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*/ |
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public function addCondition(Condition $condition) |
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{ |
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if (!$this->condition) { |
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$this->condition = new AndCondition(); |
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} |
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$this->condition->addCondition($condition); |
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return $this; |
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} |
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/** |
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* Get the precondition. |
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* |
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* @return Condition |
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*/ |
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public function getPreCondition():? Condition |
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{ |
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return $this->preCondition; |
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} |
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/** |
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* Add a precondition precondition. |
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* |
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* @param Condition $preCondition The new precondition. |
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* |
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* @return $this |
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*/ |
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public function addPreCondition(Condition $preCondition): self |
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{ |
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if (!$this->preCondition) { |
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$this->preCondition = new AndCondition(); |
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} |
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$this->preCondition->addCondition($preCondition); |
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return $this; |
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} |
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/** |
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* Consider if user input is required. |
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* |
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* @param Item $item Workflow item. |
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* |
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* @return array |
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*/ |
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public function getRequiredPayloadProperties(Item $item): array |
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{ |
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return array_merge( |
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... array_map( |
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function (Action $action) use ($item) { |
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return $action->getRequiredPayloadProperties($item); |
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}, |
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$this->actions |
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) |
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); |
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} |
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/** |
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* Consider if transition is allowed. |
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* |
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* @param Item $item The Item. |
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* @param Context $context The transition context. |
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* @param ErrorCollection $errorCollection The error collection. |
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* |
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* @return bool |
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*/ |
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public function isAllowed(Item $item, Context $context, ErrorCollection $errorCollection): bool |
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{ |
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if ($this->checkPreCondition($item, $context, $errorCollection)) { |
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return $this->checkCondition($item, $context, $errorCollection); |
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} |
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return false; |
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} |
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/** |
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* Consider if transition is available. |
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* |
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* If a transition can be available but it is not allowed depending on the user input. |
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* |
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* @param Item $item The Item. |
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* @param Context $context The transition context. |
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* @param ErrorCollection $errorCollection The error collection. |
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* |
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* @return bool |
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*/ |
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public function isAvailable(Item $item, Context $context, ErrorCollection $errorCollection): bool |
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{ |
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if ($this->getRequiredPayloadProperties($item)) { |
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return $this->checkPreCondition($item, $context, $errorCollection); |
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} |
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return $this->isAllowed($item, $context, $errorCollection); |
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} |
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/** |
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* Check the precondition. |
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* |
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* @param Item $item The Item. |
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* @param Context $context The transition context. |
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* @param ErrorCollection $errorCollection The error collection. |
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* |
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* @return bool |
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*/ |
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public function checkPreCondition(Item $item, Context $context, ErrorCollection $errorCollection) |
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{ |
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return $this->performConditionCheck($this->preCondition, $item, $context, $errorCollection); |
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} |
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/** |
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* Check the condition. |
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* |
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* @param Item $item The Item. |
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* @param Context $context The transition context. |
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* @param ErrorCollection $errorCollection The error collection. |
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* |
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* @return bool |
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*/ |
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public function checkCondition(Item $item, Context $context, ErrorCollection $errorCollection) |
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{ |
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return $this->performConditionCheck($this->condition, $item, $context, $errorCollection); |
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} |
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/** |
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* Set a permission to the transition. |
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* |
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* @param Permission $permission Permission being assigned. |
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* |
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* @return $this |
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*/ |
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public function setPermission(Permission $permission) |
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{ |
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$this->permission = $permission; |
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return $this; |
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} |
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/** |
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* Consider if permission is assigned to transition. |
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* |
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* @param Permission $permission Permission being check. |
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* |
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* @return bool |
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*/ |
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public function hasPermission(Permission $permission) |
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{ |
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if ($this->permission) { |
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return $this->permission->equals($permission); |
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} |
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return false; |
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} |
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/** |
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* Get assigned permission. Returns null if no transition is set. |
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* |
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* @return Permission|null |
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*/ |
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public function getPermission() |
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{ |
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return $this->permission; |
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} |
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/** |
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* Execute all actions. |
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* |
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* @param Item $item The workflow item. |
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* @param Context $context The transition context. |
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* @param ErrorCollection $errorCollection The error collection. |
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* |
355
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* @return bool |
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*/ |
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public function executeActions(Item $item, Context $context, ErrorCollection $errorCollection) |
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{ |
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return $this->doExecuteActions($item, $context, $errorCollection, $this->actions); |
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} |
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/** |
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* Execute all actions. |
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* |
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* @param Item $item The workflow item. |
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* @param Context $context The transition context. |
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* @param ErrorCollection $errorCollection The error collection. |
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* |
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* @return bool |
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*/ |
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public function executePostActions(Item $item, Context $context, ErrorCollection $errorCollection) |
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{ |
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return $this->doExecuteActions($item, $context, $errorCollection, $this->postActions); |
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} |
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/** |
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* Perform condition check. |
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* |
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* @param Condition|null $condition Condition to be checked. |
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* @param Item $item Workflow item. |
381
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* @param Context $context Condition context. |
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* @param ErrorCollection $errorCollection Error collection. |
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* |
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* @return bool |
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*/ |
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private function performConditionCheck($condition, $item, $context, ErrorCollection $errorCollection) |
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{ |
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if (!$condition) { |
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return true; |
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} |
391
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return $condition->match($this, $item, $context, $errorCollection); |
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} |
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|
395
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/** |
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* Execute the actions. |
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* |
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* @param Item $item Workflow item. |
399
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* @param Context $context Condition context. |
400
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* @param ErrorCollection $errorCollection Error collection. |
401
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* @param Action[] $actions Action to execute. |
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* |
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* @return bool |
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*/ |
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private function doExecuteActions(Item $item, Context $context, ErrorCollection $errorCollection, $actions) |
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{ |
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$success = $this->isAllowed($item, $context, $errorCollection); |
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|
409
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if ($success) { |
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try { |
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foreach ($actions as $action) { |
412
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|
|
$action->transit($this, $item, $context); |
413
|
|
|
} |
414
|
|
|
} catch (ActionFailedException $e) { |
415
|
|
|
$params = array('exception' => $e->getMessage()); |
416
|
|
|
$errorCollection->addError('transition.action.failed', $params); |
417
|
|
|
|
418
|
|
|
return false; |
419
|
|
|
} |
420
|
|
|
} |
421
|
|
|
|
422
|
|
|
return $success; |
423
|
|
|
} |
424
|
|
|
} |
425
|
|
|
|