An internal NodeData should never produce a Node object.
| public isInternal ( ) : boolean | ||
| return | boolean | |
/**
* Creates a node from the given NodeData container.
*
* If this factory has previously created a Node for the given $node and it's dimensions,
* it will return the same node again.
*
* @param NodeData $nodeData
* @param Context $context
* @return NodeInterface
* @throws NodeConfigurationException if a configured 'class' for a Node does not exist or does not inherit NodeInterface
*/
public function createFromNodeData(NodeData $nodeData, Context $context)
{
if ($nodeData->isInternal()) {
return null;
}
$internalNodeIdentifier = $nodeData->getIdentifier() . spl_object_hash($context);
// In case there is a Node with an internal NodeData (because the NodeData was changed in the meantime) we need to flush it.
if (isset($this->nodes[$internalNodeIdentifier]) && $this->nodes[$internalNodeIdentifier]->getNodeData()->isInternal()) {
unset($this->nodes[$internalNodeIdentifier]);
}
if (!isset($this->nodes[$internalNodeIdentifier])) {
// Warning: Alternative node implementations are considered internal for now, feature can change or be removed anytime. We want to be sure it works well and makes sense before declaring it public.
$class = $nodeData->getNodeType()->getConfiguration('class') ?: $this->objectManager->getClassNameByObjectName(NodeInterface::class);
if (!in_array($class, static::getNodeInterfaceImplementations($this->objectManager))) {
throw new NodeConfigurationException('The configured implementation class name "' . $class . '" for NodeType "' . $nodeData->getNodeType() . '" does not inherit from ' . NodeInterface::class . '.', 1406884014);
}
$this->nodes[$internalNodeIdentifier] = new $class($nodeData, $context);
}
$node = $this->nodes[$internalNodeIdentifier];
return $this->filterNodeByContext($node, $context);
}