Hello,
I am using Hibernate 2.1.3.
Following is the portion of the mapping file.
========================================
<class name="Prospect" table="MIS_PROSPECTS">
<id name="id" column="PRP_PROSPECT_ID">
<generator class="native"/>
</id>
<property name="companyName" column="PRP_COMPANY_NAME" type="string" not-null="true"/>
<property name="corpAddr1" column="PRP_CORP_ADDRESS_1" type="string"/>
<property name="corpAddr2" column="PRP_CORP_ADDRESS_2" type="string"/>
<property name="corpCity"
column="PRP_CORP_CITY" type="string"/>
<property name="corpState" column="PRP_CORP_STATE" type="string"/>
<property name="corpZipCode" column="PRP_CORP_ZIP" type="string"/>
<property name="corpPhone" column="PRP_CORP_PHONE" type="string"/>
<property name="contractCount" column="PRP_CONTRACT_CNT"/>
<set name="groups" table="MIS_PROSPECT_GROUPS">
<key column="PRP_PROSPECT_ID"/>
<one-to-many class="Group"/>
</set>
<many-to-one name="contact" column="CNT_CONTACT_ID" class="Contact" outer-join="auto"/>
</class>
<!-- Contact -->
<class name="Contact" table="MIS_CONTACTS">
<id name="id" column="CNT_CONTACT_ID">
<generator class="native"/>
</id>
<property name="firstName" column="CNT_FIRST_NAME" type="string" not-null="true"/>
<property name="lastName" column="CNT_LAST_NAME" type="string" not-null="true"/>
<many-to-one name="contactType" column="CTR_CONTACT_TYPE" class="ContactType" unique="true"/>
</class>
=================================

Following is the java code:
=================================
public void getProspectByCity(String criteria) {
Session sess = null;
try {
sess = sessFactory.openSession();
Transaction tx = null;
List prospects = null;
tx = sess.beginTransaction();
Query q = sess.createQuery("from Prospect as prospect " +
"left join fetch prospect.contact where " +
"prospect.corpCity like :city");
String likeCity = criteria + "%";
q.setString("city", likeCity);
prospects = q.list();
Prospect prospect = (Prospect) prospects.get(0);
Iterator itr = prospect.getGroups().iterator();
Group nextGroup = null;
while (itr.hasNext()) {
nextGroup = (Group) itr.next();
System.out.println("Group - id = "

+nextGroup.getGroupNumber());
}
tx.commit();
}
catch (HibernateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
finally {
try {
if ((sess != null) && (sess.isOpen())) {
sess.close();
}
}
catch (HibernateException e1) {
e1.printStackTrace();
}
}
}
=================================

follwing is the stack trace:
==================================
net.sf.hibernate.UnresolvableObjectException: No row with the given identifier exists: 605811, of class:

com.ibx.ecommerce.persist.Contact
at net.sf.hibernate.UnresolvableObjectException.throwIfNull(UnresolvableObjectException.java(Compiled Code))
at net.sf.hibernate.impl.SessionImpl.internalLoad(SessionImpl.java(Inlined Compiled Code))
at net.sf.hibernate.type.ManyToOneType.resolveIdentifier(ManyToOneType.java(Compiled Code))
at net.sf.hibernate.type.EntityType.resolveIdentifier(EntityType.java(Compiled Code))
at net.sf.hibernate.impl.SessionImpl.initializeEntity(SessionImpl.java(Compiled Code))
at net.sf.hibernate.loader.Loader.doQuery(Loader.java(Compiled Code))
at net.sf.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:133)
at net.sf.hibernate.loader.Loader.doList(Loader.java:955)
at net.sf.hibernate.loader.Loader.list(Loader.java:946)
at net.sf.hibernate.hql.QueryTranslator.list(QueryTranslator.java:834)
at net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:1536)
at net.sf.hibernate.impl.QueryImpl.list(QueryImpl.java:39)
at com.ibx.ecommerce.persist.InitialTester.getProspectByCity(InitialTester.java:136)
at com.ibx.ecommerce.persist.InitialTester.main(InitialTester.java:166)
=====================================
I have turned on "show_sql" to try to understand what is going on.
==============================================

Hibernate: select prospect0_.PRP_PROSPECT_ID as PRP_PROS1_, prospect0_.PRP_COMPANY_NAME as PRP_COMP2_,

prospect0_.PRP_CORP_ADDRESS_1 as PRP_CORP3_, prospect0_.PRP_CORP_ADDRESS_2 as PRP_CORP4_, prospect0_.PRP_CORP_CITY

as PRP_CORP5_, prospect0_.PRP_CORP_STATE as PRP_CORP6_, prospect0_.PRP_CORP_ZIP as PRP_CORP7_,

prospect0_.PRP_CORP_PHONE as PRP_CORP8_, prospect0_.PRP_CONTRACT_CNT as PRP_CONT9_, prospect0_.CNT_CONTACT_ID as

CNT_CON10_ from MIS2.MIS_PROSPECTS prospect0_ left outer join MIS2.MIS_CONTACTS contact1_ on

prospect0_.CNT_CONTACT_ID=contact1_.CNT_CONTACT_ID where (prospect0_.PRP_CORP_CITY like ? )
Hibernate: select contact0_.CNT_CONTACT_ID as CNT_CONT1_1_, contact0_.CNT_FIRST_NAME as CNT_FIRS2_1_,

contact0_.CNT_LAST_NAME as CNT_LAST3_1_, contact0_.CTR_CONTACT_TYPE as CTR_CONT4_1_, contacttyp1_.CTR_CONTACT_TYPE

as CTR_CONT1_0_, contacttyp1_.CTR_DESCRIPTION as CTR_DESC2_0_ from MIS2.MIS_CONTACTS contact0_ left outer join

MIS2.MIS_CONTACT_TYPE_REF contacttyp1_ on contact0_.CTR_CONTACT_TYPE=contacttyp1_.CTR_CONTACT_TYPE where

contact0_.CNT_CONTACT_ID=?
Hibernate: select contact0_.CNT_CONTACT_ID as CNT_CONT1_1_, contact0_.CNT_FIRST_NAME as CNT_FIRS2_1_,

contact0_.CNT_LAST_NAME as CNT_LAST3_1_, contact0_.CTR_CONTACT_TYPE as CTR_CONT4_1_, contacttyp1_.CTR_CONTACT_TYPE

as CTR_CONT1_0_, contacttyp1_.CTR_DESCRIPTION as CTR_DESC2_0_ from MIS2.MIS_CONTACTS contact0_ left outer join

MIS2.MIS_CONTACT_TYPE_REF contacttyp1_ on contact0_.CTR_CONTACT_TYPE=contacttyp1_.CTR_CONTACT_TYPE where

contact0_.CNT_CONTACT_ID=?
============================
=====================================
I get the UnresolvableObjectException on the "q.list()".
I assumed the left outer join would handle the problem of a row in the
prospects table having a contact column value that doesn't exist as a FK in the contacts table.

HOW CAN I AVOID THIS EXCEPTION????