A few weeks ago, I contributed a quick-and-dirty expressions implementation, which Kevin then moved to org.apache.shindig.expressions.
This EL implementation only supports the "." operator, which was fine for getting started with data pipelining but very limiting. There's an existing JUEL library (http://juel.sourceforge.net/) with an Apache 2.0 license and a Maven deployment on ibiblio that appears to support all the syntax we need and more. Any objections to scrapping the existing implementation and switching to YUEL? Or alternative recommendations? -- Adam
