[hibernate-dev] Bytecode enhancement

[Jeremy Whiting]

Hi Guillaume,
   A Maven plugin for build time enhancement of entities is coded up. 
Not without a few problems along the way. But I think we are there now. 
Comments are in-lined with your questions.
  There should be a plugin in the maven repo soon (if not now) using a 
Mojo and the necessary descriptors declaring dependencies. pull/669

  The documentation has a PR waiting to merge showing users how to 
configure for Ant, Maven or Gradle. Look at 
https://github.com/hibernate/hibernate-orm/pull/667 for configuration 
information going into the reference manual.

Jeremy

On 03/19/2014 04:25 PM, Guillaume Smet wrote:
> Hi,
>
> I took a look at the bytecode enhancement Maven plugin and I also have
> this issuehttps://hibernate.atlassian.net/browse/HHH-8833  .
>
> As far as I can tell the Maven plugin (and I suppose the Gradle plugin
> too) doesn't provide any information about the classpath so it's
> impossible to use the bytecode enhancement plugin in real life
> applications because you obviously have dependencies to other classes.
https://github.com/hibernate/hibernate-orm/blob/4.2/hibernate-enhance-maven-plugin/hibernate-enhance-maven-plugin.gradle
https://github.com/hibernate/hibernate-orm/blob/4.2/hibernate-gradle-plugin/hibernate-gradle-plugin.gradle
  Are there more dependency declarations you needed ?
>
> Is this something supported or something very experimental? I found
> some old posts of Emmanuel discouraging the use of bytecode
> enhancement so I'm not sure it's a good idea to invest our time in it?
>
> Basically, we have a lot of nullable @OneToOne properties and as far
> as I understood it, it's supposed to help this case a lot.
>
> Maybe using something like
> http://www.mograblog.com/2010/01/setting-classloader-in-maven-plugin.html
> might be a good idea for the Maven plugin?
>
> Anyway feedback welcome before we invest time in it.
>
> Thanks.
>