Managing dependencies with Spring 3.0 M2 and DataNucleus

ASM this library is major p.i.t.a cause releases aren't backwards compatible, and is done for the performance improvements. Spring doesn't plan to upgrade as from this post and this post but instead will reference a packaged version of asm, due to release with Spring 3.0 M3 . This is all part of the cost of working with milestones.

Google app engine / java uses Data Nucleus to enhance class files for persistence and relies on asm 3.1. Currently I am using the maven-datanucleus-plugin to enhance my class files. With maven I couldn't figure out how to include both libraries. The solution was to define the asm 2.3.2 libraries with scope runtime, and change ant-macros.xml file to not failonerror to false. I haven't tested on gae/j itself and just hosted mode, and this seemed to work. Also I had to define the datanucleus-core dependency as runtime scope as well, because the plugin requires 1.1.2, and gae only works with 1.1.1 now.