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Hibernate version:
3.05 and 3.1b3

Mapping documents:
<hibernate-mapping
>
<class
name="org.appfuse.model.ModelB"
table="tst_b"
>

<id
name="id"
column="id"
type="java.lang.Long"
unsaved-value="null"
>
<generator class="native">
<!--
To add non XDoclet generator parameters, create a file named
hibernate-generator-params-ModelB.xml
containing the additional parameters and place it in your merge dir.
-->
</generator>
</id>

<version
name="version"
column="version"
type="java.lang.Integer"
/>

<!--
To add non XDoclet property mappings, create a file named
hibernate-properties-ModelB.xml
containing the additional properties and place it in your merge dir.
-->

</class>

</hibernate-mapping>


Here's modela.hbm.xml

<?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
>
<class
name="org.appfuse.model.ModelA"
table="tst_b"
>

<id
name="id"
column="id"
type="java.lang.Long"
unsaved-value="null"
>
<generator class="native">
<!--
To add non XDoclet generator parameters, create a file named
hibernate-generator-params-ModelA.xml
containing the additional parameters and place it in your merge dir.
-->
</generator>
</id>

<version
name="version"
column="version"
type="java.lang.Integer"
/>

<many-to-one
name="modelBList"
class="org.appfuse.model.ModelB"
cascade="none"
outer-join="auto"
update="true"
insert="true"
column="id"
/>

<!--
To add non XDoclet property mappings, create a file named
hibernate-properties-ModelA.xml
containing the additional properties and place it in your merge dir.
-->

</class>

</hibernate-mapping>


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

Full stack trace of any exception that occurs:
[junit] Error creating bean with name 'sessionFactory' defined in file [C:\tools\eclipse\eclipse
-data\workspace\test\build\dao\gen\META-INF\applicationContext-hibernate.xml]: Initialization of bea
n failed; nested exception is org.hibernate.MappingException: Repeated column in mapping for entity:
org.appfuse.model.ModelA column: id (should be mapped with insert="false" update="false")
[junit] org.springframework.beans.factory.BeanCreationException: Error creating bean with name '
sessionFactory' defined in file [C:\tools\eclipse\eclipse-data\workspace\test\build\dao\gen\META-INF
\applicationContext-hibernate.xml]: Initialization of bean failed; nested exception is org.hibernate
.MappingException: Repeated column in mapping for entity: org.appfuse.model.ModelA column: id (shoul
d be mapped with insert="false" update="false")
[junit] org.hibernate.MappingException: Repeated column in mapping for entity: org.appfuse.model
.ModelA column: id (should be mapped with insert="false" update="false")
Name and version of the database you are using:

The generated SQL (show_sql=true):
MySQL 4.1

Debug level Hibernate log excerpt:
na

ModelA has id and version
ModelB has id and version and a reference to ModelA

In modelB


which implies that the reference to ModelA is the same as ModelB id.
IF that is the case, the association is not many-to-one, but one-to-one.

Maybe you meant to give different name to column for many-to-one relationship to modelB

Thanks, I think I now see my problem. I needed to add some arbitrary column name and not use the id column. -Bruce