Hibernate version 3:
Hi,
i have a question about association, in my case many-to-one here a bit code.


But my association it's not obbligatory, or rather not always exists, but if hibernate don't found this association throws an exception "no row ...".
in few words, as it is possible to say to Hinernate, if this associations not exits don't throws a exception
Can you help me.
Devis

Why cascade when your not able to update or save the object?

You need to inform hibernate that is nullable.

Why cascade when your not able to update or save the object?

It's true but if i don't put update"false" inserte="false" Hibernate throws me
"duplicate stagpf" and "duplicate modepf".
Then Hibernate write correctly into ModeVO with cascade="save-update"
What is wrong in my mappging?
Devis

[code]

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping SYSTEM "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >
<hibernate-mapping>


<class name="vo.as400.PfVO" table="sdgtwb_dat.arcpf00f" lazy="false"

dynamic-update="true"
dynamic-insert="true"


>




<composite-id name="pfvopk" class="vo.pk.PfVOPK">
<key-property name="stagpf" column="stagpf" type="string"/>
<key-property name="modepf" column="modepf" type="string"/>
<key-property name="matepf" column="matepf" type="string"/>
</composite-id>



<property name="strepf" column="strepf" type="dao.hibernate.TrimmedString"/>
<property name="nrazpf" column="nrazpf"/>
<property name="dtumpf" column="dtumpf"/>
<property name="orumpf" column="orumpf"/>
<property name="blrepf" column="blrepf" type="dao.hibernate.TrimmedString"/>
<property name="de50pf" column="de50pf" type="dao.hibernate.TrimmedString"/>
<property name="cartpf" column="cartpf" type="dao.hibernate.TrimmedString"/>
<property name="marcpf" column="marcpf" type="dao.hibernate.TrimmedString"/>
<property name="linepf" column="linepf" type="dao.hibernate.TrimmedString"/>
<property name="slinpf" column="slinpf" type="dao.hibernate.TrimmedString"/>


<property name="cmp1pf" column="cmp1pf" type="dao.hibernate.TrimmedString"/>
<property name="cmp2pf" column="cmp2pf" type="dao.hibernate.TrimmedString"/>
<property name="cmp3pf" column="cmp3pf" type="dao.hibernate.TrimmedString"/>
<property name="cdogpf" column="cdogpf" type="dao.hibernate.TrimmedString"/>
<property name="civapf" column="civapf" type="dao.hibernate.TrimmedString"/>
<property name="cnvepf" column="cnvepf" type="dao.hibernate.TrimmedString"/>
<property name="cnaqpf" column="cnaqpf" type="dao.hibernate.TrimmedString"/>
<property name="peunpf" column="peunpf"/>
<property name="volupf" column="volupf"/>
<property name="cma1pf" column="cma1pf" type="dao.hibernate.TrimmedString"/>
<property name="cma2pf" column="cma2pf" type="dao.hibernate.TrimmedString"/>
<property name="cma3pf" column="cma3pf" type="dao.hibernate.TrimmedString"/>
<property name="cma4pf" column="cma4pf" type="dao.hibernate.TrimmedString"/>
<property name="cma5pf" column="cma5pf" type="dao.hibernate.TrimmedString"/>
<property name="qmxbpf" column="qmxbpf"/>
<property name="scmnpf" column="scmnpf"/>
<property name="ltripf" column="ltripf"/>
<property name="coaqpf" column="coaqpf"/>
<property name="coulpf" column="coulpf"/>
<property name="ggcupf" column="ggcupf"/>
<property name="mmcupf" column="mmcupf"/>
<property name="aacupf" column="aacupf"/>
<property name="socupf" column="socupf"/>

<property name="ricopf" column="ricopf" type="dao.hibernate.TrimmedString"/>
<property name="ftcopf" column="ftcopf" type="dao.hibernate.TrimmedString"/>
<property name="flicpf" column="flicpf" type="dao.hibernate.TrimmedString"/>
<property name="fptgpf" column="fptgpf" type="dao.hibernate.TrimmedString"/>
<property name="fla1pf" column="fla1pf" type="dao.hibernate.TrimmedString"/>
<property name="fla2pf" column="fla2pf" type="dao.hibernate.TrimmedString"/>
<property name="fla3pf" column="fla3pf" type="dao.hibernate.TrimmedString"/>
<property name="fla5pf" column="fla4pf" type="dao.hibernate.TrimmedString"/>

<property name="fla6pf" column="fla6pf" type="dao.hibernate.TrimmedString"/>
<property name="fla7pf" column="fla7pf" type="dao.hibernate.TrimmedString"/>
<property name="fla8pf" column="fla8pf" type="dao.hibernate.TrimmedString"/>
<property name="fl10pf" column="fl10pf" type="dao.hibernate.TrimmedString"/>
<property name="fl20pf" column="fl20pf" type="dao.hibernate.TrimmedString"/>
<property name="fl30pf" column="fl30pf" type="dao.hibernate.TrimmedString"/>

<property name="ceaqpf" column="ceaqpf"/>
<property name="ceulpf" column="ceulpf"/>

<property name="fl31pf" column="fl31pf" type="dao.hibernate.TrimmedString"/>
<property name="fl32pf" column="fl32pf" type="dao.hibernate.TrimmedString"/>
<property name="fl33pf" column="fl33pf" type="dao.hibernate.TrimmedString"/>
<property name="fl34pf" column="fl34pf" type="dao.hibernate.TrimmedString"/>
<property name="fl35pf" column="fl35pf" type="dao.hibernate.TrimmedString"/>
<property name="fl36pf" column="fl36pf" type="dao.hibernate.TrimmedString"/>
<property name="fl37pf" column="fl37pf" type="dao.hibernate.TrimmedString"/>
<property name="fl38pf" column="fl38pf" type="dao.hibernate.TrimmedString"/>
<property name="fl39pf" column="fl39pf" type="dao.hibernate.TrimmedString"/>
<property name="fl40pf" column="fl40pf" type="dao.hibernate.TrimmedString"/>
<property name="fl41pf" column="fl41pf" type="dao.hibernate.TrimmedString"/>
<property name="fl42pf" column="fl42pf" type="dao.hibernate.TrimmedString"/>
<property name="fl43pf" column="fl43pf" type="dao.hibernate.TrimmedString"/>
<property name="fl44pf" column="fl44pf" type="dao.hibernate.TrimmedString"/>
<property name="fl45pf" column="fl45pf" type="dao.hibernate.TrimmedString"/>
<property name="fl46pf" column="fl46pf" type="dao.hibernate.TrimmedString"/>
<property name="fl47pf" column="fl47pf" type="dao.hibernate.TrimmedString"/>
<property name="fl48pf" column="fl48pf" type="dao.hibernate.TrimmedString"/>
<property name="fl49pf" column="fl49pf" type="dao.hibernate.TrimmedString"/>



<many-to-one name="stagione" class="vo.as400.CStagione" lazy="false" update="false" insert="false">
<formula>'STG'</formula>
<column name="STAGPF"/>
</many-to-one>

<many-to-one name="modevo" class="vo.as400.ModeVO" lazy="false" cascade="save-update" not-null="true" update="false" insert="false">
<column name="STAGPF"/>
<column name="MODEPF"/>
</many-to-one>



</class>
</hibernate-mapping>

/code]