Hello,

I am using my own classe to generate a sequence ID. With the new version of hibernate (1.2.1) it doesn't seems to take in consideration the <param> tag. My "HibernateSequenceGen.class" has got a construct with one parameter. This parameter is a string and the the name is "sequenceName".

With the previous version of Hibernate it was working perfectly, but in that previous version the < name=".."> property of the <param> tag was not requiered.

Do you have any Idea ?



Here my configuration


<id name="sid" type="long" unsaved-value="0">
<generator class="mypackage.HibernateSequenceGen">
<param name="sequenceName">c_group</param>
</generator>
</id>

Can you clarify your problem and what is going on ?

I'm using the <param> tag inside a <generate> (with my own custom ID generator) in the most recent version (2.1.2) with no problems. What error are you getting?

Hello,

Yes I will try :) to clarify my problem. I am using my own class to generate an ID. I have to pass a sequence Name to my class to be able to generate a different ID for a different sequence.

My own class has two constructors :

First constructor
------------------


public HibernateSequenceGen() throws HibernateException {
log.debug("HibernateSequenceGen default");
this.sequenceName = "__DEFAULT__";
getHome();
log.info("HibernateSequenceGen default OK");
}


Second constructor
------------------

public HibernateSequenceGen(String sequenceName) throws HibernateException {
log.debug("HibernateSequenceGen: "+sequenceName);
this.sequenceName = sequenceName;
getHome();
}


When I use this classe in an hibernate mappings xml file as follow, It never calls my second constructor but always the first one.

<id name="sid" type="long" unsaved-value="0">
<generator class="com.webmcq.ld.util.sequence.HibernateSequenceGen">
<param name="sequenceName">cm_ld_content_key</param>
</generator>
</id>

It seems that it never take in consideration the <param> tag in my <generator> tag. Normally by specify an <param> it must calls the constructor with param and not the default one.

The other possibility is that I have not understood something :)

I hope that is more clear :)


Thanks for your answers.

First thing, does your HibernateSequenceGen class extend one of the classes in the net.sf.hibernate.id package or implement net.sf.hibernate.id.Configurable? To use parameters you need to implement the configure() method in your class. Here's an example of an implementation: (in a class that extends net.sf.hibernate.id.SequenceGenerator)

This would set the <param> "foo".

Thanks greg_barton it is working fine with your solution.