One of the cool new features in introduced in Delphi XE is a possibility to use TObject-descendant as parameter types in DataSnap server methods. I was planning to cover different possible parameter types that you can use in DataSnap applications, but it would be a huge discussion. Jim Tierney from Embarcadero has already discussed different DataSnap parameter types on his blog and during recent CodeRage5 conference session "DataSnap: Features and Integration with User Types". In Java Enterpr...