Java tutorial
/** * The contents of this file are subject to the OpenMRS Public License * Version 1.0 (the "License"); you may not use this file except in * compliance with the License. You may obtain a copy of the License at * http://license.openmrs.org * * Software distributed under the License is distributed on an "AS IS" * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the * License for the specific language governing rights and limitations * under the License. * * Copyright (C) OpenMRS, LLC. All Rights Reserved. */ package org.openmrs.module.clinicalsummary.rule.reminder.adult.cluster; import org.apache.commons.collections.CollectionUtils; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.openmrs.api.context.Context; import org.openmrs.logic.LogicContext; import org.openmrs.logic.LogicException; import org.openmrs.logic.result.Result; import org.openmrs.module.clinicalsummary.rule.EvaluableConstants; import org.openmrs.module.clinicalsummary.rule.EvaluableNameConstants; import org.openmrs.module.clinicalsummary.rule.EvaluableRule; import org.openmrs.module.clinicalsummary.rule.medication.AntiRetroViralRule; import org.openmrs.module.clinicalsummary.rule.observation.ObsWithRestrictionRule; import org.openmrs.module.clinicalsummary.rule.observation.ObsWithStringRestrictionRule; import org.openmrs.module.clinicalsummary.rule.reminder.ReminderParameters; import java.util.Arrays; import java.util.Calendar; import java.util.Date; import java.util.Map; public class FallingCD4OnARVReminderRule extends EvaluableRule { private static final Log log = LogFactory.getLog(FallingCD4OnARVReminderRule.class); public static final String TOKEN = "Falling CD4 On Anti Retro Viral Reminder"; /** * @see org.openmrs.logic.Rule#eval(org.openmrs.logic.LogicContext, Integer, java.util.Map) */ @Override protected Result evaluate(final LogicContext context, final Integer patientId, final Map<String, Object> parameters) throws LogicException { Result result = new Result(); ObsWithRestrictionRule obsWithRestrictionRule = new ObsWithStringRestrictionRule(); parameters.put(EvaluableConstants.OBS_FETCH_SIZE, 2); parameters.put(EvaluableConstants.OBS_CONCEPT, Arrays.asList(EvaluableNameConstants.CD4_COUNT)); Result clusterResults = obsWithRestrictionRule.eval(context, patientId, parameters); // only process when we have at least two results if (CollectionUtils.size(clusterResults) >= 2) { Calendar calendar = Calendar.getInstance(); // three months ago calendar.add(Calendar.MONTH, -3); Date threeMonthsAgo = calendar.getTime(); // we already know there's at least two results, so we can use the magic number here to get last and second from last result Result currentClusterResult = clusterResults.get(0); Result previousClusterResult = clusterResults.get(1); Double percentage = (previousClusterResult.toNumber() - currentClusterResult.toNumber()) / previousClusterResult.toNumber(); if (currentClusterResult.getResultDate().before(threeMonthsAgo) && percentage > 0.5) { AntiRetroViralRule antiRetroViralRule = new AntiRetroViralRule(); // prepare the encounter types parameters.put(EvaluableConstants.ENCOUNTER_TYPE, Arrays.asList(EvaluableNameConstants.ENCOUNTER_TYPE_ADULT_INITIAL, EvaluableNameConstants.ENCOUNTER_TYPE_ADULT_RETURN, EvaluableNameConstants.ENCOUNTER_TYPE_ADULT_NONCLINICALMEDICATION)); Result arvResults = antiRetroViralRule.eval(context, patientId, parameters); if (CollectionUtils.isNotEmpty(arvResults)) { // we don't want to limit the search on the test parameters.remove(EvaluableConstants.OBS_FETCH_SIZE); // search for the test parameters.put(EvaluableConstants.OBS_CONCEPT, Arrays.asList(EvaluableNameConstants.TESTS_ORDERED)); parameters.put(EvaluableConstants.OBS_VALUE_CODED, Arrays.asList(EvaluableNameConstants.CD4_PANEL, EvaluableNameConstants.HIV_DNA_POLYMERASE_CHAIN_REACTION_QUALITATIVE, EvaluableNameConstants.HIV_VIRAL_LOAD_QUANTITATIVE)); Result testResults = obsWithRestrictionRule.eval(context, patientId, parameters); calendar.setTime(currentClusterResult.getResultDate()); calendar.add(Calendar.MONTH, 3); Date threeMonthsAfterResult = calendar.getTime(); Boolean testExists = Boolean.FALSE; Integer testCounter = 0; while (testCounter < testResults.size() && !testExists) { Result testResult = testResults.get(testCounter++); if (testResult.getResultDate().before(threeMonthsAfterResult) && testResult.getResultDate().after(currentClusterResult.getResultDate())) testExists = Boolean.TRUE; } if (!testExists) result.add(new Result( String.valueOf(parameters.get(ReminderParameters.DISPLAYED_REMINDER_TEXT)))); } } } return result; } /** * @see org.openmrs.logic.Rule#getDependencies() */ @Override public String[] getDependencies() { return new String[] { ObsWithStringRestrictionRule.TOKEN }; } /** * Get the token name of the rule that can be used to reference the rule from LogicService * * @return the token name */ @Override protected String getEvaluableToken() { return TOKEN; } }