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

package com.bjsxt.hibernate;

import java.io.Serializable;

public class FiscalYearPeriodPK implements Serializable {

	//核算年
	private int fiscalYear;
	
	//核算月
	private int fiscalPeriod;

	public int getFiscalYear() {
		return fiscalYear;
	}

	public void setFiscalYear(int fiscalYear) {
		this.fiscalYear = fiscalYear;
	}

	public int getFiscalPeriod() {
		return fiscalPeriod;
	}

	public void setFiscalPeriod(int fiscalPeriod) {
		this.fiscalPeriod = fiscalPeriod;
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + fiscalPeriod;
		result = prime * result + fiscalYear;
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		final FiscalYearPeriodPK other = (FiscalYearPeriodPK) obj;
		if (fiscalPeriod != other.fiscalPeriod)
			return false;
		if (fiscalYear != other.fiscalYear)
			return false;
		return true;
	}
	
}

package com.bjsxt.hibernate;

import java.util.Date;
  
/**
 * 核算期间
 * @author wangy
 *
 */
public class FiscalYearPeriod {
	
	private FiscalYearPeriodPK fiscalYearPeriodPK;
	
	//开始日期
	private Date beginDate;
	
	//结束日期
	private Date endDate;
	
	//状态
	private String periodSts;

	public Date getBeginDate() {
		return beginDate;
	}

	public void setBeginDate(Date beginDate) {
		this.beginDate = beginDate;
	}

	public Date getEndDate() {
		return endDate;
	}

	public void setEndDate(Date endDate) {
		this.endDate = endDate;
	}

	public String getPeriodSts() {
		return periodSts;
	}

	public void setPeriodSts(String periodSts) {
		this.periodSts = periodSts;
	}

	public FiscalYearPeriodPK getFiscalYearPeriodPK() {
		return fiscalYearPeriodPK;
	}

	public void setFiscalYearPeriodPK(FiscalYearPeriodPK fiscalYearPeriodPK) {
		this.fiscalYearPeriodPK = fiscalYearPeriodPK;
	}
}

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC 
	"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
	"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
	<class name="com.bjsxt.hibernate.FiscalYearPeriod" table="t_fiscal_year_period">
		<composite-id name="fiscalYearPeriodPK">
			<key-property name="fiscalYear"/>
			<key-property name="fiscalPeriod"/>	
		</composite-id>
		<property name="beginDate"/>
		<property name="endDate"/>
		<property name="periodSts"/>
	</class>
</hibernate-mapping>