Hibernate多对多的映射
这是以前学Hibernate多对多的时候写的代码！这里介绍了2种不同方式的多对多的映射！例子以Emploree和Project为目标！其中一种配置为
<?xml version="1.0" encoding="utf-8"?><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN""http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><!-- Mapping file autogenerated by MyEclipse Persistence Tools--><hibernate-mapping> <class name="com.softceo.hibernate.dto.Project" table="PROJECT" schema="SCOTT"> <id name="proid" type="java.lang.Integer"> <column name="PROID" precision="22" scale="0" /> <generator /> </id> <property name="proname" type="java.lang.String"> <column name="PRONAME" length="20" not-null="true" /> </property> <property name="prodescription" type="java.lang.String"> <column name="PRODESCRIPTION" length="200" not-null="true" /> </property> <set name="emplorees" table="R_TMP_PROJ" schema="SCOTT" cascade="save-update"> <key> <column name="R_PROJ_ID" precision="22" scale="0" not-null="true" /> </key> <many-to-many entity-name="com.softceo.hibernate.dto.Emploree"> <column name="R_EMP_ID" precision="22" scale="0" not-null="true" /> </many-to-many> </set> </class></hibernate-mapping>
<?xml version="1.0" encoding="utf-8"?><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN""http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><!-- Mapping file autogenerated by MyEclipse Persistence Tools--><hibernate-mapping> <class name="com.softceo.hibernate.dto.Project" table="PROJECT" schema="SCOTT"> <id name="proid" type="java.math.BigDecimal"> <column name="PROID" precision="22" scale="0" /> <generator /> </id> <property name="proname" type="java.lang.String"> <column name="PRONAME" length="20" not-null="true" /> </property> <property name="prodescription" type="java.lang.String"> <column name="PRODESCRIPTION" length="200" not-null="true" /> </property> <set name="RTmpProjs" inverse="true" cascade="save-update"> <key> <column name="R_PROJ_ID" precision="22" scale="0" not-null="true" /> </key> <one-to-many /> </set> </class></hibernate-mapping>
<?xml version="1.0" encoding="utf-8"?><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN""http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><!-- Mapping file autogenerated by MyEclipse Persistence Tools--><hibernate-mapping> <class name="com.softceo.hibernate.dto.RTmpProj" table="R_TMP_PROJ" schema="SCOTT"> <composite-id> <key-many-to-one name="emploree" precision="22" scale="0" /> </key-many-to-one> <key-many-to-one name="project" precision="22" scale="0" /> </key-many-to-one> </composite-id> </class></hibernate-mapping>
