DQ Rule for invalid date of death

InvalidDateOfDeath.java

package org.openmrs.module.dataintegrity;

import org.hibernate.Criteria;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Restrictions;
import org.openmrs.Patient;
import org.openmrs.api.context.Context;
import org.openmrs.module.dataintegrity.rule.RuleDefn;
import org.openmrs.module.dataintegrity.rule.RuleResult;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;

public class InvalidDateOfDeath implements RuleDefn<Patient> {

	@Override
	public List<RuleResult<Patient>> evaluate() {
		SessionFactory sessionFactory = Context.getRegisteredComponent("sessionFactory",SessionFactory.class);

		Criteria criteria = sessionFactory.getCurrentSession()
				.createCriteria(Patient.class,"patient")
				.add(Restrictions.isNotNull("deathDate"))
				.add(Restrictions.eq("voided",false))
				.add(Restrictions.gt("deathDate",new Date()));

		List<Patient> patientList = criteria.list();

		return patientToRuleResultTransformer(patientList);
	}

	private List<RuleResult<Patient>> patientToRuleResultTransformer(List<Patient> patients){

		List<RuleResult<Patient>> ruleResults = new ArrayList<>();
		for (Patient patient : patients) {
			RuleResult<Patient> ruleResult = new RuleResult<>();
			ruleResult.setActionUrl("");
			ruleResult.setNotes("Patient with invalid date");
			ruleResult.setEntity(patient);

			ruleResults.add(ruleResult);
		}

		return ruleResults;
	}
}