Lambda the Ultimate

We have a product that comes with its own proprietary scripting language. This scripting language runs inside a JVM and can callout to java classes. Like most of the scripting languages, this script is not object oriented. I am concerned about using this scripting language for heavy programming. This scripting code can only be stored in a database. It is hard for multipel developers to work on it simultaneouly. I am afraid of facing significant maintenance issues in the future.

Before it becomes too late, I am thinking to write the code in java and call from this scripting language.I am interested in comparing the advantages/disadvantages of using a proprietary scripting language against using Java. Please give me your thoughts so I can make a better decision.

I really appreciate your input..

Thanks
Rajesh