<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC 
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
    <hibernate-mapping>
    	<class name="com.java1234.hibernate.model.Node" table="tb_node">
    		<id name="id" column="nodeId" type="int">
    			<generator class="native"/>
    		</id>
    		<property name="name" column="nodeName"/>
    		
    		<!-- 1:n，一個父節點對應多個子節點。parentId:nodeId=1:n -->
    		<many-to-one name="parent" column="parentId" cascade="save-update" class="com.java1234.hibernate.model.Node"/>
    		
    		<!-- n:1，nodeId:childId=1:n -->
    		<set name="childNodes"  cascade="save-update">
    			<key column="childId"/>
    			<one-to-many class="com.java1234.hibernate.model.Node"/>
    		</set>
    	
    	</class>
    
    </hibernate-mapping>