Multiple Projects that make up a Product

Hello all,

I am new to SVN and have a question about how to setup and manage a
repository. We are building an Enterprise Level application that will have
multiple projects that will be compiled into Jars and the group of Jars will
make up the Product. When I look at the SVN documentation about multiple
Projects in SVN it seems straight forward. However, the documentation
doesn't lend itself to the product level.

So, I have multiple projects

repo/
 -project 1
   - branches
   - trunk
 -project 2
   - branches
   - trunk

Now I want to make a build of the product that will be compiling project 1
and project 2 into jar files and package them for the product. I can see
how managing this could get real crazy... All of a sudden project1 has
several branches and project 2 has several branches and I need to provide a
build script that know which ones to pull into the project.

Has anyone done something like this before and is there a better way to
manage it?

Thanks,

-- 
The Hardest thing in the world to do is Think,
Mark Twain