@Override
protected Actions requiredActions(VitroRequest vreq) {
/*
* Based on the query parameters passed via URI get the appropriate visualization
* request handler.
* */
VisualizationRequestHandler visRequestHandler = getVisualizationRequestHandler(vreq);
if (visRequestHandler != null) {
Actions requiredPrivileges = visRequestHandler.getRequiredPrivileges();
if (requiredPrivileges != null) {
return requiredPrivileges;
}
}
return super.requiredActions(vreq);
}
private Object renderVisualization(
VitroRequest vitroRequest, VisualizationRequestHandler visRequestHandler) {
Model model = vitroRequest.getJenaOntModel(); // getModel()
if (model == null) {
String errorMessage =
"This service is not supporeted by the current "
+ "webapp configuration. A jena model is required in the "
+ "servlet context.";
log.error(errorMessage);
return UtilityFunctions.handleMalformedParameters(
"Visualization Query Error", errorMessage, vitroRequest);
}
Dataset dataset = setupJENADataSource(vitroRequest);
if (dataset != null && visRequestHandler != null) {
try {
return visRequestHandler.generateAjaxVisualization(vitroRequest, log, dataset);
} catch (MalformedQueryParametersException e) {
return UtilityFunctions.handleMalformedParameters(
"Ajax Visualization Query Error - Individual Publication Count",
e.getMessage(),
vitroRequest);
}
} else {
String errorMessage =
"Data Model Empty &/or Inappropriate " + "query parameters were submitted. ";
log.error(errorMessage);
return UtilityFunctions.handleMalformedParameters(
"Visualization Query Error", errorMessage, vitroRequest);
}
}
