Java tutorial
/********************************************************************************** * $URL$ * $Id$ *********************************************************************************** * * Copyright (c) 2007, 2008 The Sakai Foundation * * Licensed under the Educational Community License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.opensource.org/licenses/ECL-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * **********************************************************************************/ package org.sakaiproject.coursemanagement.test.performance; import java.util.HashSet; import java.util.Map; import java.util.Set; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.sakaiproject.coursemanagement.api.CourseManagementAdministration; import org.sakaiproject.coursemanagement.api.CourseManagementService; import org.sakaiproject.coursemanagement.api.Enrollment; import org.sakaiproject.coursemanagement.api.Membership; import org.sakaiproject.coursemanagement.api.Section; import org.sakaiproject.coursemanagement.api.SectionCategory; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import org.springframework.transaction.PlatformTransactionManager; import org.springframework.transaction.TransactionDefinition; import org.springframework.transaction.TransactionStatus; import org.springframework.transaction.support.DefaultTransactionDefinition; public class IndexPerformance { private static final Log log = LogFactory.getLog(IndexPerformance.class); private static final int secCount = 10; private static final int enrollmentsPerEnrollmentSet = 100; private static final int membersPerSection = 100; private static final String esPrefix = "IndexPerf ES "; private static final String secPrefix = "IndexPerf SEC "; protected ApplicationContext appContext; protected CourseManagementAdministration cmAdmin; protected CourseManagementService cmService; protected PlatformTransactionManager tm; public IndexPerformance() { init(); } public void init() { appContext = new ClassPathXmlApplicationContext( new String[] { "spring-test.xml", "spring-config-test.xml" }); cmAdmin = (CourseManagementAdministration) appContext .getBean(CourseManagementAdministration.class.getName()); cmService = (CourseManagementService) appContext.getBean(CourseManagementService.class.getName()); tm = (PlatformTransactionManager) appContext.getBean("cmTransactionManager"); } public void loadLotsOfData() { DefaultTransactionDefinition def = new DefaultTransactionDefinition(); def.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED); TransactionStatus status = tm.getTransaction(def); try { String asId = "IndexPerf AS"; cmAdmin.createAcademicSession(asId, asId, asId, null, null); String csId = "IndexPerf CS"; cmAdmin.createCourseSet(csId, csId, csId, "DEPT", null); String ccId = "IndexPerf CC"; cmAdmin.createCanonicalCourse(ccId, ccId, ccId); String coId = "IndecPerf CO"; cmAdmin.createCourseOffering(coId, csId, csId, "open", asId, ccId, null, null); for (int i = 1; i <= secCount; i++) { String esId = esPrefix + i; Set<String> instructors = new HashSet<String>(); instructors.add("instructor_A_" + i); instructors.add("instructor_B_" + i); instructors.add("instructor_C_" + i); cmAdmin.createEnrollmentSet(esId, esId, esId, "lecture", "3", coId, instructors); } for (int i = 1; i <= secCount; i++) { String secId = secPrefix + i; cmAdmin.createSection(secId, secId, secId, "lecture", null, coId, (esPrefix + i)); } for (int i = 1; i <= secCount; i++) { for (int j = 1; j <= enrollmentsPerEnrollmentSet; j++) { cmAdmin.addOrUpdateEnrollment("student" + j, esPrefix + i, "enrolled", "3", "letter grade"); } } for (int i = 1; i <= secCount; i++) { for (int j = 1; j <= membersPerSection; j++) { cmAdmin.addOrUpdateSectionMembership("student" + j, "some role", secPrefix + i, "some status"); } } } catch (Exception e) { tm.rollback(status); } finally { if (!status.isCompleted()) { tm.commit(status); } } } public long getTimeToSelectEnrollments(String studentEid, String esEid) { long start = System.currentTimeMillis(); Enrollment enr = cmService.findEnrollment(studentEid, esEid); long end = System.currentTimeMillis(); return end - start; } public long getTimeToSelectMembers(String studentEid) { long start = System.currentTimeMillis(); Map<String, String> roleMap = cmService.findSectionRoles(studentEid); long end = System.currentTimeMillis(); return end - start; } public long getTimeToSelectInstructors(String instructorEid) { long start = System.currentTimeMillis(); Set<Section> sections = cmService.findInstructingSections(instructorEid); long end = System.currentTimeMillis(); return end - start; } // Static methods public static void main(String[] args) { IndexPerformance indexPerf = new IndexPerformance(); indexPerf.loadLotsOfData(); logEnrollmentSelects(indexPerf); logMemberSelects(indexPerf); logInstructorSelects(indexPerf); } private static void logEnrollmentSelects(IndexPerformance indexPerf) { long total = 0; for (int i = 1; i <= enrollmentsPerEnrollmentSet; i++) { long thisRun = indexPerf.getTimeToSelectEnrollments("student" + i, esPrefix + 1); total += thisRun; } double esMean = (double) total / (double) enrollmentsPerEnrollmentSet; log.info("Mean time (in milliseconds) to select Enrollments:\t" + esMean); } private static void logMemberSelects(IndexPerformance indexPerf) { long total = 0; for (int i = 1; i <= membersPerSection; i++) { long thisRun = indexPerf.getTimeToSelectMembers("student" + i); total += thisRun; } double secMean = (double) total / (double) membersPerSection; log.info("Mean time (in milliseconds) to select Memberships:\t" + secMean); } private static void logInstructorSelects(IndexPerformance indexPerf) { long total = 0; for (int i = 1; i <= secCount; i++) { long thisRun = indexPerf.getTimeToSelectInstructors("instructor_B_" + i); total += thisRun; } double secMean = (double) total / (double) secCount; log.info("Mean time (in milliseconds) to select Instructors:\t" + secMean); } }