hibernate一对多联级的问题

Question

因为你没有设置inverse=true,所以父亲也要维持父子关系，因为它不知道哪个儿子指向自己，所以就多出update，所以影响效率，如果设置了inverse=true，就只需要儿子来维护关系，需要显示的指定son.setParent(parent).

Answer 1

我的inverse=true,对不起,我没有贴配置文件
父如下:<set name="personAttrVal"
     table="personAttrVal"
 lazy="false"
 inverse="true" 
 cascade="all"
 sort="unsorted"
 order-by="pkIDPersonAttrVal"
 >
 <key column="pkPersonID"/>
 <one-to-many class="com.madcat.resource.PersonAttrVal"/>
    </set>
子如下:<many-to-one
    name="personMain"
class="com.madcat.resource.PersonMain"
    cascade="all"
    outer-join="auto" 
update="true" 
insert="true" 
access="property"  
not-null="true">
<column name="pkPersonID"/>
</many-to-one>

Answer 2

错误如下:
net.sf.hibernate.HibernateException: SQL insert, update or delete failed (row not found)
at net.sf.hibernate.impl.NonBatchingBatcher.addToBatch(NonBatchingBatcher.java:25)
at net.sf.hibernate.persister.EntityPersister.update(EntityPersister.java:688)
at net.sf.hibernate.persister.EntityPersister.update(EntityPersister.java:641)
at net.sf.hibernate.impl.ScheduledUpdate.execute(ScheduledUpdate.java:52)
at net.sf.hibernate.impl.SessionImpl.executeAll(SessionImpl.java:2382)
at net.sf.hibernate.impl.SessionImpl.execute(SessionImpl.java:2336)
at net.sf.hibernate.impl.SessionImpl.flush(SessionImpl.java:2204)
at net.sf.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:61)
at com.madcat.testhibernate.testhibernate.testInsert(testhibernate.java:81)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at junit.textui.TestRunner.doRun(TestRunner.java:116)
at com.intellij.rt.execution.junit2.IdeaJUnitAgent.doRun(Unknown Source)
at junit.textui.TestRunner.start(TestRunner.java:172)
at com.intellij.rt.execution.junit.TextTestRunner2.startRunnerWithArgs(Unknown Source)
at com.intellij.rt.execution.junit2.JUnitStarter.prepareStreamsAndStart(Unknown Source)
at com.intellij.rt.execution.junit2.JUnitStarter.main(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.intellij.rt.execution.application.AppMain.main(Unknown Source)
net.sf.hibernate.HibernateException: SQL insert, update or delete failed (row not found)
at net.sf.hibernate.impl.NonBatchingBatcher.addToBatch(NonBatchingBatcher.java:25)
at net.sf.hibernate.persister.EntityPersister.update(EntityPersister.java:688)
at net.sf.hibernate.persister.EntityPersister.update(EntityPersister.java:641)
at net.sf.hibernate.impl.ScheduledUpdate.execute(ScheduledUpdate.java:52)
at net.sf.hibernate.impl.SessionImpl.executeAll(SessionImpl.java:2382)
at net.sf.hibernate.impl.SessionImpl.execute(SessionImpl.java:2336)
at net.sf.hibernate.impl.SessionImpl.flush(SessionImpl.java:2204)
at net.sf.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:61)
at com.madcat.testhibernate.testhibernate.testInsert(testhibernate.java:81)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at junit.textui.TestRunner.doRun(TestRunner.java:116)
at com.intellij.rt.execution.junit2.IdeaJUnitAgent.doRun(Unknown Source)
at junit.textui.TestRunner.start(TestRunner.java:172)
at com.intellij.rt.execution.junit.TextTestRunner2.startRunnerWithArgs(Unknown Source)
at com.intellij.rt.execution.junit2.JUnitStarter.prepareStreamsAndStart(Unknown Source)
at com.intellij.rt.execution.junit2.JUnitStarter.main(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.intellij.rt.execution.application.AppMain.main(Unknown Source)

Answer 3

一对多不要用table了<set name="personAttrVal"
    <!-- table="personAttrVal"--去掉这个就OK-->
 lazy="false"
 inverse="true" 
 cascade="all"
 sort="unsorted"
 order-by="pkIDPersonAttrVal"
 >
 <key column="pkPersonID"/>
 <one-to-many class="com.madcat.resource.PersonAttrVal"/>
    </set>

Answer 4

<!-- table="personAttrVal"--去掉这个就OK-->

Answer 5

不可能撒，给你一个最简单的配置文件。
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN"
                                   "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping>
<class name="cn.com.stoneman.sztvdemo.ParentBean" table="parent">
<id name="parentid" column="parentid" type="integer">
<generator class="native"/>
</id>
<property name="name" column="name" type="string"/>
<bag name="childBean" cascade="all" order-by="childid">
<key column="parentid"/>
<one-to-many class="cn.com.stoneman.sztvdemo.ChildBean"/>
</bag>
</class>
</hibernate-mapping><hibernate-mapping>
<class name="cn.com.stoneman.sztvdemo.ChildBean" table="child">
<id name="childid" column="childid" type="integer">
<generator class="native"/>
</id>
<property name="name" column="name" type="string"/>
<many-to-one name="parent" column="parentid" class="cn.com.stoneman.sztvdemo.ParentBean"/>
</class>
</hibernate-mapping>
你参照一下改一下吧，最好能把你关键的代码贴出来

Answer 6

我测试的代码如下:
 PersonAttrVal personAttrVal = new PersonAttrVal();
        personAttrVal.setPkidpersonAttrDef(1);
        personAttrVal.setAttrValue("鸟");
        personAttrVal.setStatus((short)0);        PersonMain personmain = new PersonMain();
        personmain.setAddress("aa");
        personmain.setBirthday(new Date());
        personmain.setCreateTime(new Date());
        personmain.setEmail("aaa");
        personmain.setMemo("aaa");
        personmain.setPassword("aaa");
        personmain.setPersonNameSpell("aaa");
        personmain.setPersonName("阿嗄阿");
        personmain.setPersonType((short)1);
        personmain.setPhoneNumber("123123");
        personmain.setPolity("aaa");
        personmain.setSex((short)1);
        personmain.setStatus((short)0);
//        personmain.setUpdateTime(Timestamp.valueOf("2001-1-1"));
        personmain.setUpdateTime(new Date());
        personmain.setUserId("aaa");
        personmain.getPersonAttrVal().add(personAttrVal);        personAttrVal.setPersonMain(personmain);        try {
            Transaction tx = session.beginTransaction();
            session.saveOrUpdate(personmain);
//            session.save(personAttrVal);
            tx.commit();
//            session.flush();        } catch (HibernateException e) {
            e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
        }

Answer 7

personAttrVal.setPkidpersonAttrDef(1);
你的主键生成策略是什么，如果是自增的话，把这句话注释
personmain.getPersonAttrVal().add(personAttrVal);//注释掉
personAttrVal.setPersonMain(personmain);改成personmain.setPersonAttrVal(personAttrVal);