I've been working on a fairly large system written mainly in groovy that is made up of a number of applications. The two biggest are a desktop system that is used to develop a model and a web system that is used to run it and look at the data. Developing a model usually requires specifying hundreds of formulas, and each formula is a tiny groovy script. A few scripts are bigger, a few are hundreds of lines, but most are small.
The system was developed with Eclipse, but eventually we moved over to Gradle as our main build environment. I still use Eclipse for development, it is pretty helpful in debugging. For a while I tried an Eclipse plugin for Groovy and Gradle, but eventually decided it was too much trouble and now just keep the Gradle scripts and the Eclipse build system in synch by hand. I've got one power user who keeps Eclipse installed on his machine so that I can run the debugger. He is outstanding at finding bugs. Recently he had a problem on his computer that wrecked his Eclipse workspace, though not the Eclipse installation. So, I just built a new workspace by checking out all the packages that he used. I discovered that I was missing a few files that Eclipse used, but not Gradle. It probably had been more than a year since I had checked out packages into a new Eclipse workspace, but I check out sources and build with Gradle nearly every day. There is still a problem with running on his machine. Some scripts have a problem with transformations. When I evaluate the script, I get the message Unknown transformation for argument groovy.lang.ExpandoMetaClass$ExpandoMetaProperty for parameter of type Class Note that the system works fine on Eclipse on my machine and the gradle versions work fine, it is just this one Eclipse installation that has problems. I assume the problem is that I didn't commit a file that I should have committed, but I don't know what to look for. I don't know where transformations are stored. I know more or less how they work, but have never written one. Does anybody have suggestions about what to look for? -Ralph Johnson
