Hibernate级联问题

Question

设置一下 cascade属性为： cascade="all" 试试看；
 <set name="defectCategories" inverse="true" cascade="all">

Answer 1

你用预先抓取策略，如下改写：<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD 2.0//EN"
    "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd" >
    
<hibernate-mapping><class 
    name="cattsoft.uci.ejb.po.DefectCategory" 
    table="DEFECT_CATEGORY"
   lazy="false"
>    <id
        name="dcid"
        type="java.lang.Integer"
        column="DCID"
    >
        <generator class="assigned" />
    </id>    <property
        name="name"
        type="java.lang.String"
        column="NAME"
        not-null="true"
        length="64"
    />    <!-- associations -->
    <!-- bi-directional one-to-many association to DefectCategory -->
    <set
        name="defectCategories"
        lazy="false"
        inverse="true"
    >
        <key>
            <column name="PARENT_DCID" />
        </key>
        <one-to-many 
            class="cattsoft.uci.ejb.po.DefectCategory"
        />
    </set>
    <!-- bi-directional many-to-one association to DefectCategory -->
    <many-to-one
        name="defectCategory"
        class="cattsoft.uci.ejb.po.DefectCategory"
        not-null="true"
        fetch="join"
    >
        <column name="PARENT_DCID" />
    </many-to-one>
    <!-- bi-directional one-to-many association to Qualitydefect -->
    <set
        name="qualitydefects"
        lazy="true"
        inverse="true"
    >
        <key>
            <column name="DCID" />
        </key>
        <one-to-many 
            class="cattsoft.uci.ejb.po.Qualitydefect"
        />
    </set></class>
</hibernate-mapping>