/**
* Format an RDFS Class to an array to be interpreted by the client tree
* This is a closed array format.
*
* @access public
* @author Jerome Bogaerts, <*****@*****.**>
* @param core_kernel_classes_Class $clazz
* @param array $options
* @return array
*/
public function toTree(core_kernel_classes_Class $clazz, array $options = array())
{
// show instances yes/no
$instances = isset($options['instances']) ? $options['instances'] : true;
// cut of the class and only display the children?
$chunk = isset($options['chunk']) ? $options['chunk'] : false;
// probably which subtrees should be opened
$browse = isset($options['browse']) ? $options['browse'] : array();
// limit of instances shown by subclass if no search label is given
// if a search string is given, this is the total limit of results, independent of classes
$limit = isset($options['limit']) ? $options['limit'] : 0;
// offset for limit
$offset = isset($options['offset']) ? $options['offset'] : 0;
// A unique node URI to be returned from as a tree leaf.
$uniqueNode = isset($options['uniqueNode']) ? $options['uniqueNode'] : null;
if ($uniqueNode !== null) {
$instance = new \core_kernel_classes_Resource($uniqueNode);
$results[] = TreeHelper::buildResourceNode($instance, $clazz);
$returnValue = $results;
} else {
// Let's walk the tree with super walker! ~~~ p==[w]õ__
array_walk($browse, function (&$item) {
$item = tao_helpers_Uri::decode($item);
});
$openNodes = TreeHelper::getNodesToOpen($browse, $clazz);
if (!in_array($clazz->getUri(), $openNodes)) {
$openNodes[] = $clazz->getUri();
}
$factory = new GenerisTreeFactory($instances, $openNodes, $limit, $offset, $browse);
$tree = $factory->buildTree($clazz);
$returnValue = $chunk ? isset($tree['children']) ? $tree['children'] : array() : $tree;
}
return $returnValue;
}
/**
* Builds the content of a class node including it's content
*
* @param core_kernel_classes_Class $class
*
* @return array
*/
private function buildChildNodes(core_kernel_classes_Class $class)
{
$childs = array();
// subclasses
foreach ($class->getSubClasses(false) as $subclass) {
$childs[] = $this->classToNode($subclass, $class);
}
// resources
if ($this->showResources) {
$limit = $this->limit;
if (in_array($class->getUri(), $this->browsableTypes)) {
$limit = 0;
}
$searchResult = $class->searchInstances(array(), array('limit' => $limit, 'offset' => $this->offset, 'recursive' => false, 'order' => RDFS_LABEL));
foreach ($searchResult as $instance) {
$childs[] = TreeHelper::buildResourceNode($instance, $class);
}
}
return $childs;
}
