Using java.util.collections classes in generator

Solved my own problem, in my generator properties->common->imported models I imported "java.util@java_stub (JDK)", and now the collections classes are showing up in my generator.

I've the same problem with 'map' in Generator... I would like to use'em instead of fallbacking on java.util.*

Furthermore, in MPS2.0 Generator/properties/common accepts jars only... So I should import the sdk itself in my model! Which is inconsistent since the SDK itself has been modelized in baseLanguage :-/

Please could you help me on this, here is the real errors:

 
  private <!TextGen not found for 'jetbrains.mps.baseLanguage.collections.structure.MapType'!> connections = new <!TextGen not found for 'jetbrains.mps.baseLanguage.collections.structure.HashMapCreator'!>;

    For,

private map<string, list<string>> connections = new hashmap<string, list<string>>;    

      
      And
      
         

     <!TextGen not found for 'jetbrains.mps.baseLanguage.collections.structure.MapElement'!> = new <!TextGen not found for 'jetbrains.mps.baseLanguage.collections.structure.ListCreatorWithInit'!>;
     

For,

connections[connectionName] = new arraylist<string>{login, password};
     

I had this problem too.
Evgeny Gryaznov was kind enough to give a solution.
http://forum.jetbrains.com/thread/Meta-Programming-System-632

Plz feel free to contact me if you need further help.

Here you are using our collections language.

The expected generation workflow:
1. apply your generator (which produces collections)
2. reduce collections language -> java collections api
3. save to .java

In terms of languages:
[program in your language] —> [in baseLanguage + collections]
     —> [in baseLanguage] —> .java files

But since you didn't specify that your language produces collection language, your generator could be inserted at random step. The workflow could look like:

1. reduce collections language -> java collections api
2. apply your generator (produces collections which will never be reduced)
3. save to .java (failure, non-java elements found)

The solution:
Add a priority rule (see Generator -> Properties) that your generator is <= than collections generator.