I wish to use Reflection to create a templating system that presets default values and associations between my beans in Hibernate 2. It would obtain field names and values from a text file, use Reflection to look up the setters and build criteria queries to obtain objects to assign in associations.

This breaks down in many-to-many and one-to-many schemes because reflection will only tell me that a given field takes a Set. Is there a way I can determine the class Hibernate expects to find in a given Set, so I can build a criteria query to obtain its members dynamically?

Thanks!

Chris

I am not sure if this is new in Hibernate 3 but you have access to the metaData of the mapping. In this case you would not need another file. Have a look in the reference. There is a chapter about this.


Regards Sebastian

Good lead, however, it gets me no further than I was before:

factory.getClassMetadata(Myclass.class).getPropertyType("myproperty") returns a Type, but from Type I can only get Set.class, not the class that's being mapped in the association.

I've read the docs up and down but don't see anything more promising. Am I completely blind?

It took some thinking so I thought the answer to this may be useful to post. From the ClassMetaData object, one needs to getPropertyType of the association in the field, cast it into an AssociationType, and call getAssociatedClass.

I was staring at Type for an hour before I figured this out. I am particularly ignorant, but maybe others are too :)

Hi,

Some usefull links for you:

http://forum.hibernate.org/viewtopic.php?t=927780&highlight=persistentclass+configuration

http://forum.hibernate.org/viewtopic.php?t=937497&highlight=persistentclass+configuration

http://forum.hibernate.org/viewtopic.php?t=950543&highlight=

http://forum.hibernate.org/viewtopic.php?t=941099&highlight=

Read them carrefully, there's a lot of information what you might use.

If you don't find the solution post more details, maybe I can help you.[/url]