hibernate 知识

来源：互联网发布：淘宝开特产店证件编辑：程序博客网时间：2024/05/19 04:52

1、hibernate 生成ddl文件并导出

new SchemaExport(new Configuration().configure()).create(true, false);

2、hibernate 多对多配置

<?xml version="1.0"?><!DOCTYPE hibernate-mapping PUBLIC"-//Hibernate/Hibernate Mapping DTD 3.0//EN""http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"><hibernate-mapping package="com.wxl.app"><class name="Category" table="CATEGORY"><id name="id" type="string" column="F_ID"><generator class="uuid"></generator></id><property name="title" type="string" column="F_TITLE" unique="true"></property><set name="adverts" table="LINK_CATEGORY_ADVERT"><key column="F_CATEGORY" foreign-key="FK_ADVERT_CATEGORY"></key><many-to-many class="Advert" column="F_ADVERT" foreign-key="FK_CATEGORY_ADVERT"></many-to-many></set></class></hibernate-mapping>

column为外键（其他表引用本表的外键），foreign-key为数据库中外键（索引）的名称。

0 0