public function install_model(NameResolverInterface $app_name_resolver)
{
$result = '';
$exface = $this->get_workbench();
$model_source = $this->get_app_absolute_path($app_name_resolver) . DIRECTORY_SEPARATOR . PackageManagerApp::FOLDER_NAME_MODEL;
if (is_dir($model_source)) {
$transaction = $this->get_workbench()->data()->start_transaction();
foreach (scandir($model_source) as $file) {
if ($file == '.' || $file == '..') {
continue;
}
$data_sheet = DataSheetFactory::create_from_uxon($exface, UxonObject::from_json(file_get_contents($model_source . DIRECTORY_SEPARATOR . $file)));
// Remove columns, that are not attributes. This is important to be able to import changes on the meta model itself.
// The trouble is, that after new properties of objects or attributes are added, the export will already contain them
// as columns, which would lead to an error because the model entities for these columns are not there yet.
foreach ($data_sheet->get_columns() as $column) {
if (!$column->get_attribute()) {
$data_sheet->get_columns()->remove($column);
}
}
if ($mod_col = $data_sheet->get_columns()->get_by_expression('MODIFIED_ON')) {
$mod_col->set_ignore_fixed_values(true);
}
if ($user_col = $data_sheet->get_columns()->get_by_expression('MODIFIED_BY_USER')) {
$user_col->set_ignore_fixed_values(true);
}
// Disable timestamping behavior because it will prevent multiple installations of the same
// model since the first install will set the update timestamp to something later than the
// timestamp saved in the model files
if ($behavior = $data_sheet->get_meta_object()->get_behaviors()->get_by_alias('exface.Core.Behaviors.TimeStampingBehavior')) {
$behavior->disable();
}
$counter = $data_sheet->data_replace_by_filters($transaction);
if ($counter > 0) {
$result .= ($result ? "; " : "") . $data_sheet->get_meta_object()->get_name() . " - " . $counter;
}
}
// Commit the transaction
$transaction->commit();
if (!$result) {
$result = 'No changes found';
}
} else {
$result = 'No model files to install';
}
return $result;
}
