public Boolean handle(
GuidelineAgent guidelineAgent, Guideline_Step guidelineStep, Criterion eligibilityCriteria) {
MonitoringMessageEntity messageEntity;
logger.info("ELIGIBILTY HANDLE START");
Logger.getLogger(this.getClass())
.log(Level.DEBUG, ("Eligibility Criteria:" + eligibilityCriteria.getName2()));
// TODO: Message to Monitoring in the beginning
messageEntity = new MonitoringMessageEntity();
if (guidelineStep != null) {
messageEntity.setStepName(guidelineStep.getName2());
} else {
messageEntity.setStepName(eligibilityCriteria.getName2());
}
messageEntity.setType("Eligibility Criteria");
messageEntity.setMonitoringInfo("Starting eligibility check.");
// First get the needed getDataAction array from the Criterion.
Collection getDataActions = eligibilityCriteria.getGet_Data_Items();
// Create an instance of the GetDataActionHandler.
GetDataActionHandler getDataActionHandler = new GetDataActionHandler();
// For each getDataAction, call the handler.
for (Iterator i = getDataActions.iterator(); i.hasNext(); ) {
getDataActionHandler.handle(guidelineAgent, guidelineStep, (Get_Data_Action) i.next());
}
// Get let expressions and execute them.
Collection letExpressions = eligibilityCriteria.getLet_expressions();
// For each letExpression, call the letExpressionHandler.
LetExpressionHandler letExpressionHandler = new LetExpressionHandler();
for (Iterator i = letExpressions.iterator(); i.hasNext(); ) {
letExpressionHandler.handle(guidelineAgent, guidelineStep, (Let_Expression) i.next());
}
ExpressionHandler expressionHandler = new ExpressionHandler();
Boolean result =
(Boolean)
expressionHandler.handle(
guidelineAgent,
guidelineStep,
eligibilityCriteria.getSpecification(),
guidelineAgent.getGuidelineURI());
Logger.getLogger(this.getClass())
.log(Level.DEBUG, ("The result of the eligibility criteria is: " + result));
// TODO:
// A monitoring message has to be sent now.
messageEntity.setMonitoringInfo("Finishing eligibility check. The result is: " + result);
// TODO:
// Result needs to returned. But, which result? ExpressionHandler's???
// How is Eligibility Criteria going to return its outcome? Either it will get it from
// expression handler and pass it on to GuidelineHandler or a better to store it in the
// global variable pool of the GuidelineAgent and check it after calling
// EligibilityCriteriaHandler.
logger.info("ELIGIBILTY HANDLE END");
return result;
}
