[Hibernate-issues] [Hibernate-JIRA] Commented: (HHH-1134) subclass tag with discriminator in one to many mapping

[Sanjiv J. (JIRA) <no...@at...>]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-1134?page=comments#action_23556 ] 

Sanjiv Jivan commented on HHH-1134:
-----------------------------------

Here's another example with a more detailed description of the problem 

http://forum.hibernate.org/viewtopic.php?t=935374


> subclass tag with discriminator in one to many mapping
> ------------------------------------------------------
>
>          Key: HHH-1134
>          URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1134
>      Project: Hibernate3
>         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

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