Hi,
When I added the line <cache usage="..." /> in my mapping file the configuration failed. What am I doing wrong? When I removed the above, everything load fine.


Thanks

Doug

i believe that ...
in 2.1 <cache> is deprecated in the mapping files. you should use class-cache and collection-cache in the hibernate.cfg.xml file.

Is there any documentation on this for 2.1? What if you're programmatically configuring hibernate?

<cache> is not deprecated.

In that case I have another question. I've added the read-only cache option to my mapping files. When I attempt to delete my objects I get:



Does specifying read-only mean that I can't update my objects and if so why not? (The documentation seems a little thin on this issue).

correct.

use usage="nonstrict-read-write"

I searched all over but I couldn't find a description of the difference between read-write and nonstrict-read-write. Is there a resource you could point me to that describes this?

I was just looking into this for myself on Monday.It's in the www.hibernate.org online manual: http://www.hibernate.org/hib_docs/reference/html/performance.html#performance-s3 or in the hibernate_reference.pdf that should come with the distribution. It's in different sections depending on which hibernate version, 2.0.X or 2.1.betaX, you're using.

Keep in mind on 2.1 and higher, you can use (and probably should) <cache usage="..."/> instead of <jcs-cache usage="..."/>. And don't forget to set your properties:

<!-- for query caching -->
hibernate.cache.use_query_cache=true

<!-- for using jcs-cache or the cache in a class mapping -->
hibernate.cache.provider_class=net.sf.hibernate.cache.OSCacheProvider

Regards,
David

Thanks, I don't know how I missed that. I'm not sure what "serializable transaction isolation level" means exactly. Also I still don't really get the difference between between the two after reading serveral times. Can someone with a clue please pass on their knowledge?

have a look at the javadoc in the current v21branch branch in CVS