public function testAddTransition()
{
$places = range('a', 'b');
$transition = new Transition('name', $places[0], $places[1]);
$definition = new Definition($places, array($transition));
$this->assertCount(1, $definition->getTransitions());
$this->assertSame($transition, $definition->getTransitions()['name']);
}
public function provideSimpleWorkflowDefinition()
{
$definition = new Definition();
$definition->addPlaces(range('a', 'c'));
$definition->addTransition(new Transition('t1', 'a', 'b'));
$definition->addTransition(new Transition('t2', 'b', 'c'));
return $definition;
}
public function validate(Definition $definition, $name)
{
if (!$this->singlePlace) {
return;
}
foreach ($definition->getTransitions() as $transition) {
if (1 < count($transition->getTos())) {
throw new InvalidDefinitionException(sprintf('The marking store of workflow "%s" can not store many places. But the transition "%s" has too many output (%d). Only one is accepted.', $name, $transition->getName(), count($transition->getTos())));
}
}
}
/**
* @internal
*/
protected function findEdges(Definition $definition)
{
$edges = array();
foreach ($definition->getTransitions() as $transition) {
foreach ($transition->getFroms() as $from) {
foreach ($transition->getTos() as $to) {
$edges[$from][] = array('name' => $transition->getName(), 'to' => $to);
}
}
}
return $edges;
}
public function __construct(Definition $definition, MarkingStoreInterface $markingStore, EventDispatcherInterface $dispatcher = null, $name = 'unnamed')
{
$this->definition = $definition;
$this->markingStore = $markingStore;
$this->dispatcher = $dispatcher;
$this->name = $name;
// If the marking can contain only one place, we should control the definition
if ($markingStore instanceof UniqueTransitionOutputInterface) {
foreach ($definition->getTransitions() as $transition) {
if (1 < count($transition->getTos())) {
throw new LogicException(sprintf('The marking store (%s) of workflow "%s" can not store many places. But the transition "%s" has too many output (%d). Only one is accepted.', get_class($markingStore), $this->name, $transition->getName(), count($transition->getTos())));
}
}
}
}
public function validate(Definition $definition, $name)
{
$transitionFromNames = array();
foreach ($definition->getTransitions() as $transition) {
// Make sure that each transition has exactly one TO
if (1 !== count($transition->getTos())) {
throw new InvalidDefinitionException(sprintf('A transition in StateMachine can only have one output. But the transition "%s" in StateMachine "%s" has %d outputs.', $transition->getName(), $name, count($transition->getTos())));
}
// Make sure that each transition has exactly one FROM
$froms = $transition->getFroms();
if (1 !== count($froms)) {
throw new InvalidDefinitionException(sprintf('A transition in StateMachine can only have one input. But the transition "%s" in StateMachine "%s" has %d inputs.', $transition->getName(), $name, count($transition->getTos())));
}
// Enforcing uniqueness of the names of transitions starting at each node
$from = reset($froms);
if (isset($transitionFromNames[$from][$transition->getName()])) {
throw new InvalidDefinitionException(sprintf('A transition from a place/state must have an unique name. Multiple transitions named "%s" from place/state "%s" where found on StateMachine "%s". ', $transition->getName(), $from, $name));
}
$transitionFromNames[$from][$transition->getName()] = true;
}
}
private function createComplexWorkflow()
{
$definition = new Definition();
$definition->addPlaces(range('a', 'g'));
$definition->addTransition(new Transition('t1', 'a', array('b', 'c')));
$definition->addTransition(new Transition('t2', array('b', 'c'), 'd'));
$definition->addTransition(new Transition('t3', 'd', 'e'));
$definition->addTransition(new Transition('t4', 'd', 'f'));
$definition->addTransition(new Transition('t5', 'e', 'g'));
$definition->addTransition(new Transition('t6', 'f', 'g'));
return $definition;
// The graph looks like:
//
// +---+ +----+ +---+ +----+ +----+ +----+ +----+ +----+ +---+
// | a | --> | t1 | --> | c | --> | t2 | --> | d | --> | t4 | --> | f | --> | t6 | --> | g |
// +---+ +----+ +---+ +----+ +----+ +----+ +----+ +----+ +---+
// | ^ | ^
// | | | |
// v | v |
// +----+ | +----+ +----+ +----+ |
// | b | ----------------+ | t3 | --> | e | --> | t5 | -----------------+
// +----+ +----+ +----+ +----+
}
private function findEdges(Definition $definition)
{
$dotEdges = array();
foreach ($definition->getTransitions() as $transition) {
foreach ($transition->getFroms() as $from) {
$dotEdges[] = array('from' => $from, 'to' => $transition->getName(), 'direction' => 'from');
}
foreach ($transition->getTos() as $to) {
$dotEdges[] = array('from' => $transition->getName(), 'to' => $to, 'direction' => 'to');
}
}
return $dotEdges;
}