???ò￡o

1 ???ó?￡Dí￡o

Role[id-int,name-String,user-Set] User[id-int,name-String,role-Set]

2 mapping???t￡o

Xml′ú??

<?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??package="com.nintenyun.hibernate"> ???? <class??name="Role"??table="t_role"> ?????? <id??name="id"> ???????? <generator??class="native"/> ?????? </id> ?????? <property??name="name"??/> ?????? <set??name="user"??table="t_user_role"> ?????? <key??column="userid"></key> ?????? <many-to-many??class="User"??column="userid"??/> ?????? </set> ???? </class> </hibernate-mapping>

Hibernate?÷??ó3é?1??μ×ü?á(5)

5 ?ì3Dmapping

μúò?àà?ì3Dó3é?

1 ???ó?￡Dí

Animal private??int??id private??String??name private??Boolean??sex -------------------------------------------------- public??class??Bird??extends??Animal private??int??height -------------------------------------------------- public??class??Pig??extends??Animal private??int??weight

2 mapping ???t

Xml′ú??

<?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??package="com.nintenyun.hibernate"> ???? <class??name="Animal"??table="t_animal"??> ?????? <id??name="id"??> ???????? <generator??class="native"/> ?????? </id> ?????? <discriminator??column="type"?? type="string"></discriminator> ?????? <property??name="name"/> ?????? <property??name="sex"/> ?????? <subclass??name="Pig"??discriminator-value="P"> ???????? <property??name="weight"/> ?????? </subclass> ?????? <subclass??name="Bird"??discriminator-value="B"> ???????? <property??name="height"/> ?????? </subclass> ???? </class> </hibernate-mapping>

Hibernate?÷??ó3é?1??μ×ü?á(6)

μú?tààmapping

1 ???ó?￡Dí

2 mapping ???t

Xml′ú??

<?xml??version="1.0"?> <!DOCTYPE??hibernate-

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