/**
* {@inheritdoc}
*/
public function addExpressionObject(ExpressionInterface $expression)
{
if (!$expression instanceof ActionExpressionInterface) {
throw new InvalidExpressionException('Only action expressions can be added to an action container.');
}
if ($this->getExpression($expression->getUuid())) {
throw new InvalidExpressionException('An action with the same UUID already exists in the container.');
}
$this->actions[] = $expression;
return $this;
}
/**
* {@inheritdoc}
*/
public function prepareExecutionMetadataState(ExecutionMetadataStateInterface $metadata_state, ExpressionInterface $until = NULL, $apply_assertions = TRUE)
{
if ($until && $this->getUuid() === $until->getUuid()) {
return TRUE;
}
$this->prepareExecutionMetadataStateBeforeTraversal($metadata_state);
$apply_assertions = $apply_assertions && $this->allowsMetadataAssertions();
foreach ($this as $child_expression) {
$found = $child_expression->prepareExecutionMetadataState($metadata_state, $until, $apply_assertions);
// If the expression was found, we need to stop.
if ($found) {
return TRUE;
}
}
$this->prepareExecutionMetadataStateAfterTraversal($metadata_state);
}
/**
* {@inheritdoc}
*/
public function prepareExecutionMetadataState(ExecutionMetadataStateInterface $metadata_state, ExpressionInterface $until = NULL, $apply_assertions = TRUE)
{
if ($until && $this->getUuid() === $until->getUuid()) {
return TRUE;
}
$action = $this->actionManager->createInstance($this->configuration['action_id']);
// Make sure to refine context first, such that possibly refined definitions
// of provided context are respected.
$this->prepareContextWithMetadata($action, $metadata_state);
$this->addProvidedContextDefinitions($action, $metadata_state);
if ($apply_assertions) {
$this->assertMetadata($action, $metadata_state);
}
}