Adds an expression object.

Parameters

\Drupal\rules\Engine\ExpressionInterface $expression: The expression object.

Return value

$this

Overrides ExpressionContainerInterface::addExpressionObject

1 call to ActionExpressionContainer::addExpressionObject()

ActionExpressionContainer::addAction in src/Engine/ActionExpressionContainer.php

Creates an action expression and adds it to the container.

File

src/Engine/ActionExpressionContainer.php, line 51

Class

ActionExpressionContainer

Container for actions.

Namespace

Drupal\rules\Engine

Code

public function addExpressionObject(ExpressionInterface $expression) {
  if (!$expression instanceof ActionExpressionInterface) {
    throw new InvalidExpressionException('Only action expressions can be added to an action container.');
  }
  $uuid = $expression->getUuid();
  if ($this->getExpression($uuid)) {
    throw new InvalidExpressionException("An action with UUID {$uuid} already exists in the container.");
  }
  $this->actions[] = $expression;
  return $this;
}