Need help with Hibernate? Read this first:
http://www.hibernate.org/ForumMailingli ... AskForHelp

Hibernate version: 3.1

Mapping documents:


<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class entity-name="Bug" table="Bug" node="bug">
<id name="bugId" column="bugId" node="bugId"
type="java.lang.String">
<generator class="uuid" />
</id>
<version name="version" column="VERSION" node="version" />
<property name="bugInfo" column="bugInfo" node="bugInfo"
type="java.lang.String" length="80" not-null="true" />

<bag name="bugUsers" node="bugUsers" cascade="all" inverse="true">
<key column="bugId" />
<one-to-many entity-name="User" embed-xml="true"
node="userId" />
</bag>

<many-to-one name="productId" column="productId"
node="productId" embed-xml="true" entity-name="Product" />

</class>

<class entity-name="Product" table="Product" node="product">
<id name="productId" column="productId" node="productId"
type="java.lang.String">
<generator class="uuid" />
</id>
<version name="version" column="VERSION" node="version" />
<property name="productInfo" column="PRODUCT_INFO"
node="productInfo" type="java.lang.String" length="80"
not-null="true" />

<bag name="bugsProducts" cascade="all" inverse="true"
node="bugsProducts">
<key column="productId" />
<one-to-many entity-name="Bug" embed-xml="true"
node="bugId" />
</bag>

<bag name="productsUsers" table="ProductsUsers" node="productsUsers">
<key column="productId" />
<many-to-many entity-name="User" embed-xml="true"
column="userId" node="userId" />
</bag>
</class>

<class entity-name="User" table="USERS" node="user">

<id name="userId" column="userId" node="userId"
type="java.lang.String">
<generator class="uuid" />
</id>

<version name="version" column="VERSION" node="version" />

<property name="email" column="EMAIL" node="email"
type="java.lang.String" length="40" />

<many-to-one name="manager" node="manager" column="managerId"
entity-name="User" embed-xml="true" update="true" />

<many-to-one name="bugId" column="bugId" node="bugId"
embed-xml="true" entity-name="Bug" />

<bag name="productsUsers" node="productsUsers" table="ProductsUsers" lazy="true"
inverse="true">
<key column="userId" />
<many-to-many entity-name="Product" embed-xml="true"
column="productId" node="productId" />
</bag>

<one-to-one name="userDetails" node="userDetails"
entity-name="UserDetail" embed-xml="true" />
</class>

<class entity-name="UserDetail" table="USER_DETAILS"
node="userDetail">
<id name="userId" column="userId" node="userId"
type="java.lang.String">
<generator class="foreign">
<param name="property">user</param>
</generator>
</id>
<version name="version" column="VERSION" node="version" />

<one-to-one name="user" node="user" entity-name="User"
constrained="true" />

<property name="name" column="NAME" node="name"
type="java.lang.String" />
<property name="address" column="ADDRESS" node="address"
type="java.lang.String" />
<property name="phone" column="PHONE" node="phone"
type="java.lang.String" />
</class>

</hibernate-mapping>



Code between sessionFactory.openSession() and session.close():

Hibernate: insert into USERS (VERSION, EMAIL, managerId, bugId, userId) values (?, ?, ?, ?, ?)
Hibernate: insert into USER_DETAILS (VERSION, NAME, ADDRESS, PHONE, userId) values (?, ?, ?, ?, ?)
Hibernate: insert into USERS (VERSION, EMAIL, managerId, bugId, userId) values (?, ?, ?, ?, ?)
Hibernate: insert into USER_DETAILS (VERSION, NAME, ADDRESS, PHONE, userId) values (?, ?, ?, ?, ?)
Hibernate: insert into Product (VERSION, PRODUCT_INFO, productId) values (?, ?, ?)
Hibernate: insert into Bug (VERSION, bugInfo, productId, bugId) values (?, ?, ?, ?)
Hibernate: insert into Product (VERSION, PRODUCT_INFO, productId) values (?, ?, ?)
Hibernate: update USERS set VERSION=?, EMAIL=?, managerId=?, bugId=? where userId=? and VERSION=?
Hibernate: update USERS set VERSION=?, EMAIL=?, managerId=?, bugId=? where userId=? and VERSION=?
Hibernate: insert into ProductsUsers (productId, userId) values (?, ?)
Hibernate: insert into ProductsUsers (productId, userId) values (?, ?)
Hibernate: insert into ProductsUsers (productId, userId) values (?, ?)
Hibernate: insert into ProductsUsers (productId, userId) values (?, ?)
Hibernate: select user0_.userId as userId3_, user0_.VERSION as VERSION3_, user0_.EMAIL as EMAIL3_, user0_.managerId as managerId3_, user0_.bugId as bugId3_ from USERS user0_
Hibernate: select productsus0_.userId as userId1_, productsus0_.productId as productId1_, product1_.productId as productId1_0_, product1_.VERSION as VERSION1_0_, product1_.PRODUCT_INFO as PRODUCT3_1_0_ from ProductsUsers productsus0_ left outer join Product product1_ on productsus0_.productId=product1_.productId where productsus0_.userId=?
Hibernate: select bugsproduc0_.productId as productId1_, bugsproduc0_.bugId as bugId1_, bugsproduc0_.bugId as bugId0_0_, bugsproduc0_.VERSION as VERSION0_0_, bugsproduc0_.bugInfo as bugInfo0_0_, bugsproduc0_.productId as productId0_0_ from Bug bugsproduc0_ where bugsproduc0_.productId=?
Hibernate: select bugusers0_.bugId as bugId2_, bugusers0_.userId as userId2_, bugusers0_.userId as userId3_1_, bugusers0_.VERSION as VERSION3_1_, bugusers0_.EMAIL as EMAIL3_1_, bugusers0_.managerId as managerId3_1_, bugusers0_.bugId as bugId3_1_, userdetail1_.userId as userId4_0_, userdetail1_.VERSION as VERSION4_0_, userdetail1_.NAME as NAME4_0_, userdetail1_.ADDRESS as ADDRESS4_0_, userdetail1_.PHONE as PHONE4_0_ from USERS bugusers0_ left outer join USER_DETAILS userdetail1_ on bugusers0_.userId=userdetail1_.userId where bugusers0_.bugId=?
Hibernate: select productsus0_.productId as productId2_, productsus0_.userId as userId2_, user1_.userId as userId3_0_, user1_.VERSION as VERSION3_0_, user1_.EMAIL as EMAIL3_0_, user1_.managerId as managerId3_0_, user1_.bugId as bugId3_0_, userdetail2_.userId as userId4_1_, userdetail2_.VERSION as VERSION4_1_, userdetail2_.NAME as NAME4_1_, userdetail2_.ADDRESS as ADDRESS4_1_, userdetail2_.PHONE as PHONE4_1_ from ProductsUsers productsus0_ left outer join USERS user1_ on productsus0_.userId=user1_.userId left outer join USER_DETAILS userdetail2_ on user1_.userId=userdetail2_.userId where productsus0_.productId=?
Hibernate: select bugsproduc0_.productId as productId1_, bugsproduc0_.bugId as bugId1_, bugsproduc0_.bugId as bugId0_0_, bugsproduc0_.VERSION as VERSION0_0_, bugsproduc0_.bugInfo as bugInfo0_0_, bugsproduc0_.productId as productId0_0_ from Bug bugsproduc0_ where bugsproduc0_.productId=?
Hibernate: select productsus0_.productId as productId2_, productsus0_.userId as userId2_, user1_.userId as userId3_0_, user1_.VERSION as VERSION3_0_, user1_.EMAIL as EMAIL3_0_, user1_.managerId as managerId3_0_, user1_.bugId as bugId3_0_, userdetail2_.userId as userId4_1_, userdetail2_.VERSION as VERSION4_1_, userdetail2_.NAME as NAME4_1_, userdetail2_.ADDRESS as ADDRESS4_1_, userdetail2_.PHONE as PHONE4_1_ from ProductsUsers productsus0_ left outer join USERS user1_ on productsus0_.userId=user1_.userId left outer join USER_DETAILS userdetail2_ on user1_.userId=userdetail2_.userId where productsus0_.productId=?
***Exception:

org.hibernate.WrongClassException: Object with id: 402881de0a4ed9f9010a4eda19250001 was not of the specified subclass: User (loaded object was of wrong class)
at org.hibernate.loader.Loader.instanceAlreadyLoaded(Loader.java:1235)
at org.hibernate.loader.Loader.getRow(Loader.java:1186)
at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:568)
at org.hibernate.loader.Loader.doQuery(Loader.java:689)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:223)
at org.hibernate.loader.Loader.loadCollection(Loader.java:1916)
at org.hibernate.loader.collection.CollectionLoader.initialize(CollectionLoader.java:71)
at org.hibernate.persister.collection.AbstractCollectionPersister.initialize(AbstractCollectionPersister.java:520)
at org.hibernate.event.def.DefaultInitializeCollectionEventListener.onInitializeCollection(DefaultInitializeCollectionEventListener.java:60)
at org.hibernate.impl.SessionImpl.initializeCollection(SessionImpl.java:1493)
at org.hibernate.type.CollectionType.getCollection(CollectionType.java:501)
at org.hibernate.type.CollectionType.resolveKey(CollectionType.java:335)
at org.hibernate.type.CollectionType.resolve(CollectionType.java:329)
at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:113)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:842)
at org.hibernate.loader.Loader.doQuery(Loader.java:717)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:223)
at org.hibernate.loader.Loader.loadCollection(Loader.java:1916)
at org.hibernate.loader.collection.CollectionLoader.initialize(CollectionLoader.java:71)
at org.hibernate.persister.collection.AbstractCollectionPersister.initialize(AbstractCollectionPersister.java:520)
at org.hibernate.event.def.DefaultInitializeCollectionEventListener.onInitializeCollection(DefaultInitializeCollectionEventListener.java:60)
at org.hibernate.impl.SessionImpl.initializeCollection(SessionImpl.java:1493)
at org.hibernate.type.CollectionType.getCollection(CollectionType.java:501)
at org.hibernate.type.CollectionType.resolveKey(CollectionType.java:335)
at org.hibernate.type.CollectionType.resolve(CollectionType.java:329)
at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:113)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:842)
at org.hibernate.loader.Loader.doQuery(Loader.java:717)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:223)
at org.hibernate.loader.Loader.doList(Loader.java:2147)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2026)
at org.hibernate.loader.Loader.list(Loader.java:2021)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:369)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:298)
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:137)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1014)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
at com.pramati.TestEmbedXml.displayUserData(TestEmbedXml.java:266)
at com.pramati.TestEmbedXml.main(TestEmbedXml.java:306)
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:585)
at org.apache.tools.ant.taskdefs.ExecuteJava.run(ExecuteJava.java:202)
at org.apache.tools.ant.taskdefs.ExecuteJava.execute(ExecuteJava.java:134)
at org.apache.tools.ant.taskdefs.Java.run(Java.java:710)
at org.apache.tools.ant.taskdefs.Java.executeJava(Java.java:178)
at org.apache.tools.ant.taskdefs.Java.execute(Java.java:84)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
at org.apache.tools.ant.Task.perform(Task.java:364)
at org.apache.tools.ant.Target.execute(Target.java:341)
at org.apache.tools.ant.Target.performTasks(Target.java:369)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1216)
at org.apache.tools.ant.Project.executeTarget(Project.java:1185)
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:40)
at org.apache.tools.ant.Project.executeTargets(Project.java:1068)
at org.apache.tools.ant.Main.runBuild(Main.java:668)
at org.apache.tools.ant.Main.startAnt(Main.java:187)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:246)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:67)


Name and version of the database you are using: MySql 5.1

The generated SQL (show_sql=true):

Debug level Hibernate log excerpt:


Hi all

I have a bi-directional mapping, and I have done embed-xml = true at both the ends, so when I am just loading the object, I was expecting either it will go in infinite loop or not. but when I run I got this exception. The same file works fine if embed xml is false...
as my project deadline is very close, I don't have much time left

so any og you genious can help me out??
It will be highly appreciated..

Thanks in advance.

Wrong forum