/**
*
* Determine the title of the entity to be created, following this logic:
*
* 1. is there a getTitle method with a value set
* 2. is there a property containing "title" in rdf definition
* 3. take the first property defined in rdf and take first 50 characters
* 4. give up
*
* @param EntityInterface $entity
* @throws \RuntimeException
* @return mixed|string
*/
private function determineEntityTitle(EntityInterface $entity)
{
$object = $entity->getObject();
//is there a getTitle method?
if (method_exists($object, 'getTitle') && $object->getTitle()) {
return $object->getTitle();
} else {
//try to get a property containing title in the rdf description
foreach ($entity->getChildDefinitions() as $node) {
if (!$node instanceof \Midgard\CreatePHP\Entity\PropertyInterface || strpos($node->getProperty(), "title") === false) {
continue;
}
return $entity->getMapper()->getPropertyValue($object, $node);
}
//try to get the first property to create a guessed title of max 50 characters
foreach ($entity->getChildDefinitions() as $node) {
if (!$node instanceof \Midgard\CreatePHP\Entity\PropertyInterface) {
continue;
}
return substr($entity->getMapper()->getPropertyValue($object, $node), 0, 49);
}
//give up
throw new RuntimeException('No title could be found four your new node.');
}
}
/**
* Never call this method directly, but use createWithParent on your CollectionDefinition
* to get a collection tied to concrete data.
*
* @private
*
* @param EntityInterface $parent
*/
public function loadFromParent(EntityInterface $parent)
{
$this->_children = array();
$object = $parent->getObject();
$parentMapper = $parent->getMapper();
$children = $parentMapper->getChildren($object, $this);
// create entities for children
foreach ($children as $child) {
if (count($this->_typenames) === 1) {
$type = $this->_typeFactory->getTypeByRdf(current($this->_typenames));
} else {
$type = $this->_typeFactory->getTypeByObject($child);
}
foreach ($type->getVocabularies() as $prefix => $uri) {
$this->setAttribute('xmlns:' . $prefix, $uri);
}
$this->_children[] = $type->createWithObject($child);
}
if ($this->_parent->isEditable($object) && sizeof($this->_children) == 0 && count($this->_typenames) == 1) {
// create an empty element to allow adding new elements to an empty editable collection
$type = $this->_typeFactory->getTypeByRdf(reset($this->_typenames));
$mapper = $type->getMapper();
$object = $mapper->prepareObject($type, $object);
$entity = $type->createWithObject($object);
if ($entity instanceof NodeInterface) {
/** @var $entity NodeInterface */
$entity->setAttribute('style', 'display:none');
}
$this->_children[] = $entity;
}
}
