How to use a generator with composite-id ?

jas · **Posted:** Wed Oct 08, 2003 10:16 am

(Please ignore incorrect grammar and typo's, English is not my primary language)

Hi all,

Consider this part of my mapping-file:

Code:

   <class name="AdresModel" table="ADRES">
      <composite-id name="adresnr" class="AdresnrModel">
         <key-property name="adresnr"/>
         <generator class="AdresnrPKGenerator">
            <param name="sequence">SEQ_ADRES</param>
         </generator>
      </composite-id>
      ...
      ...

I have a wrapper (with only one field) for my custom PK, and I want to use a PK-Generator mapped to an oracle sequence with it.

The error I get is this:

Code:

2003-10-08 15:00:33,309 ERROR net.sf.hibernate.util.XMLHelper - Error parsing XML: XML InputStream(20)
org.xml.sax.SAXParseException: Element "composite-id" does not allow "generator" here.
   void org.apache.crimson.parser.Parser2.error(java.lang.String, java.lang.Object[])

The funny thing is, IT WORKS and does perfectly what I want. But, since the SAXParseException is thrown, is causes some worries. If this mapping-file is not allowed, what is the way to achieve this ?

Thanks in advance.

emmanuel · **Posted:** Wed Oct 08, 2003 11:32 am

It's quite strange to set a composite id with a unique generated key AND another key. That's probably why it's not authorized by the DTD

maria8868@yahoo.es · **Joined:** Mon Nov 10, 2003 5:22 pm **Posts:** 3

Ok but,
if i have a composite id and i need to use a PK generator what can i do?

sorry my poor english, regards from spain

nathanmoon · **Posted:** Mon Oct 17, 2005 11:39 am

There's actually a FAQ on this that might help you: http://www.hibernate.org/117.html#A35. I tried it out in a small test and it seemed to work quite smoothly with sequences (I was unable to get it working with identity columns).