question.hbm.xml

Hibernate的学习代码

<?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">

<hibernate-mapping package="domain">
	<class name="Question" table="question" lazy="false">
		<id name="id" type="integer">
			<generator class="identity" />
		</id>
		<discriminator column="question_type" type="string" />
		<property name="name" />
		<subclass name="EssayQuestion" discriminator-value="e">
		</subclass>
		<subclass name="ChoiceQuestion" discriminator-value="c">
			<property name="option" column="question_option"
				type="string" />
		</subclass>
	</class>
</hibernate-mapping>