hibernate Composite复合（联合）主键映射

复合（联合）主键映射

通常将复合主键相关的属性，单独放到一个类中
?* 此类必须实现序列化接口
?* 覆写hashcode和equals方法

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1、实体

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3、TestCase
package com.bjsxt.hibernate;import java.util.Date;import org.hibernate.Session;import junit.framework.TestCase;public class CompositeMappingTest extends TestCase {public void testSave1() {Session session = null;try {session = HibernateUtils.getSession();session.beginTransaction();FiscalYearPeriod fiscalYearPeriod = new FiscalYearPeriod();FiscalYearPeriodPK pk = new FiscalYearPeriodPK();pk.setFiscalYear(2009);pk.setFiscalPeriod(8);fiscalYearPeriod.setFiscalYearPeriodPK(pk);fiscalYearPeriod.setBeginDate(new Date());fiscalYearPeriod.setEndDate(new Date());fiscalYearPeriod.setPeriodSts("Y");session.save(fiscalYearPeriod);session.getTransaction().commit();}catch(Exception e) {e.printStackTrace();session.getTransaction().rollback();}finally {HibernateUtils.closeSession(session);}}public void testLoad1() {Session session = null;try {session = HibernateUtils.getSession();session.beginTransaction();FiscalYearPeriodPK pk = new FiscalYearPeriodPK();pk.setFiscalYear(2008);pk.setFiscalPeriod(8);FiscalYearPeriod fiscalYearPeriod = (FiscalYearPeriod)session.load(FiscalYearPeriod.class, pk);System.out.println(fiscalYearPeriod.getPeriodSts());session.getTransaction().commit();}catch(Exception e) {e.printStackTrace();session.getTransaction().rollback();}finally {HibernateUtils.closeSession(session);}}}
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