public function retrieve()
{
$sm = MwRdf::StoredModel();
$model = MwRdf::Model();
$context = $this->Agent->getContextNode($this->getName());
$stream = librdf_model_context_as_stream($sm->getModel(), $context->getNode());
librdf_model_add_statements($model->getModel(), $stream);
librdf_free_stream($stream);
$sm->rewind();
return $model;
}
public function retrieveModel($par)
{
if (gettype($par) == 'string') {
$par = array($par);
}
if (!gettype($par) == 'array') {
throw new Exception('retrieveModel takes either a model ' . 'name string or an array of modelnames');
}
$model = MwRdf::Model();
foreach ($par as $name) {
$mm = $this->ModelMakers[$name];
### TODO Retrieve from Cache if it's there
$sub_model = $mm->retrieve($name);
### TODO Cache the sub_model
$stream = librdf_model_as_stream($sub_model->getModel());
librdf_model_add_statements($model->getModel(), $stream);
librdf_free_stream($stream);
$sub_model->rewind();
}
return $model;
}
function CONSTRUCT($query, $base_uri = null)
{
if (is_null($base_uri)) {
$base_uri = $this->_base_uri;
}
timings($query);
$q = librdf_new_query($this->_world, 'sparql', null, $query, $base_uri);
$r = librdf_model_query_execute($this->_model, $q);
$r_stream = librdf_query_results_as_stream($r);
$r_store = librdf_new_storage($this->_world, 'memory', '', null);
$r_model = librdf_new_model($this->_world, $r_store, null);
librdf_model_add_statements($r_model, $r_stream);
librdf_free_stream($r_stream);
$serializer = librdf_new_serializer($this->_world, 'json', null, null);
$r = librdf_serializer_serialize_model_to_string($serializer, null, $r_model);
librdf_free_serializer($serializer);
$r = json_decode($r, 1);
if (is_null($r)) {
$r = array();
}
librdf_free_model($r_model);
librdf_free_storage($r_store);
librdf_free_query($q);
timings();
return $r;
}
