Hi Andrus,I think you will find the enhancer to be a very valuable tool to use to improve performance and the usability of Cayenne for JPA. All of the players in JPA use the enhancement concept to advantage.
It's probably worthwhile working through these issues. With Java SE 5 supporting agents, it is much more portable than with previous releases.
Surefire plugin will might need to be adapted to use the agent with forked jvm. I don't understand why it would be necessary if you're running in the same vm. The agent applies to all but the system class loader IIRC.
By the way, you might post to open-jpa-dev alias because they use surefire for testing and they apparently have made it work ok.
We can probably keep the enhancer as an optional extension for "Cayenne-like" behavior, including such "insignificant" things like lazy relationship loading.
I think JPA users will expect lazy loading to work correctly. And it's not just for relationships. Any expensive field (e.g. relationship, LOB) will benefit from lazy loading semantics.
Craig On Aug 9, 2006, at 6:43 AM, Andrus Adamchik wrote:
Can confirm what IIRC Bill has mentioned before - using "- javaagent" option during integration testing with Maven breaks miserably. I created a separate Maven project with a piece of configuration like that:<plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-surefire-plugin</artifactId> <configuration> <forkMode>(tried all of them)</forkMode> <childDelegation>(tried true and false)</childDelegation> <argLine>-javaagent:...</argLine> </configuration> </plugin>The configuration above would load the agent, but since Maven Surefire plugin installs its own ClassLoader for the unit tests, the agent doesn't work (I saw a number of errors depending on the combination of parameters). Will probably have to do it with Ant.Also this almost make me want to rewrite the JPA context to support true POJO's without an enhancer, as I suspect we'll be plagued by enhancer related problems in various environments. We can probably keep the enhancer as an optional extension for "Cayenne-like" behavior, including such "insignificant" things like lazy relationship loading.Andrus
Craig Russell Architect, Sun Java Enterprise System http://java.sun.com/products/jdo 408 276-5638 mailto:[EMAIL PROTECTED] P.S. A good JDO? O, Gasp!
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