/**
* 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 Class clazz
* @param array options
* @return array
*/
public function toTree(core_kernel_classes_Class $clazz, $options)
{
$returnValue = array();
// show subclasses yes/no, not implemented
$subclasses = isset($options['subclasses']) ? $options['subclasses'] : true;
// show instances yes/no
$instances = isset($options['instances']) ? $options['instances'] : true;
// @todo describe how this option influences the behaviour
$highlightUri = isset($options['highlightUri']) ? $options['highlightUri'] : '';
// filter results by label, and don't show them as a tree at all, but a flat list
$labelFilter = isset($options['labelFilter']) ? $options['labelFilter'] : '';
// @todo describe how this option influences the behaviour
$recursive = isset($options['recursive']) ? $options['recursive'] : false;
// 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, independant of classes
$limit = isset($options['limit']) ? $options['limit'] : 0;
// offset for limit
$offset = isset($options['offset']) ? $options['offset'] : 0;
//an array used to filter properties; use the format by core_kernel_classes_Class::searchInstances
$propertyFilter = isset($options['propertyFilter']) ? $options['propertyFilter'] : array();
// A unique node URI to be returned from as a tree leaf.
$uniqueNode = isset($options['uniqueNode']) ? $options['uniqueNode'] : null;
$factory = new tao_models_classes_GenerisTreeFactory();
if (!empty($labelFilter) && $labelFilter != '*') {
// The result must be a set of filtered nodes.
$props = array(RDFS_LABEL => $labelFilter);
$opts = array('like' => true, 'limit' => $limit, 'offset' => $offset, 'recursive' => true);
$searchResult = $clazz->searchInstances($props, $opts);
$results = array();
foreach ($searchResult as $instance) {
$results[] = $factory->buildResourceNode($instance, $clazz);
}
if ($offset > 0) {
$returnValue = $results;
} else {
if (count($results) > 0) {
$returnValue = $factory->buildClassNode($clazz);
$returnValue['count'] = $clazz->countInstances($props, $opts);
$returnValue['children'] = $results;
}
}
} elseif ($uniqueNode !== null) {
$instance = new \core_kernel_classes_Resource($uniqueNode);
$results[] = $factory->buildResourceNode($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);
});
$openNodes = tao_models_classes_GenerisTreeFactory::getNodesToOpen($browse, $clazz);
if (!in_array($clazz->getUri(), $openNodes)) {
$openNodes[] = $clazz->getUri();
}
$tree = $factory->buildTree($clazz, $instances, $openNodes, $limit, $offset, $propertyFilter);
$returnValue = $chunk ? $tree['children'] : $tree;
}
return $returnValue;
}
