subclass tag with discriminator in one to many mapping ------------------------------------------------------ Key: HHH-1134 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1134 Project: Hibernate Core Issue Type: Bug Components: core Environment: hibernate 3.0.5, Oracle Reporter: Dilip Ranjith Consider the following hbm.xml file <?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="DCDTO" table="ACCDC" dynamic-update="true" > <id name="ID" type="java.lang.String" > <column name="DCINFOID" /> <generator class="sequence"> <param name="sequence">DSEQ</param> <!-- To add non XDoclet generator parameters, create a file named hibernate-generator-params-DebtorCreditorDTO.xml containing the additional parameters and place it in your merge dir. --> </generator> </id> <discriminator column="accountType" not-null="true" type="java.lang.String" force="true" insert="true" /> <property name="creditMax" type="java.lang.Double" update="true" insert="true" column="creditMax" /> <subclass name="CDTO" dynamic-update="true" dynamic-insert="true" discriminator-value="C" > </.subclass> <subclass name="DDTO" dynamic-update="true" dynamic-insert="true" discriminator-value="D" > </.subclass> </class> </hibernate-mapping> DCDTO is the super class while DDTO and CDTO are its child classes If in a mapped object say TDTO there are a set of CDTOs and a separate set of DDTOs when we get TDTO the where clause "where accountType='D' " is not there when the query for set of DDTOs are generated. so instead of a set of DDTOs i am getting a set of both DDTO's and CDTO's