ecore - Xtext: Use EClass in XExpression -

i writing on xtext grammar uses xexpressions , operates on eclasses. want able access eclasses xexpression, example write expression this:

eclass1.attribute1 = eclass2.attribute1 

i know, how can use eclass within xexpression?

grammar

grammar org.xtext.example.mydsl.mydsl  org.eclipse.xtext.xbase.xbase  import "http://www.eclipse.org/emf/2002/ecore" ecore  generate mydsl "http://www.xtext.org/example/mydsl/mydsl"  model: (operations += operation)*;  terminal attr : id ('.' id)+;  operation: 'operation' left=[ecore::eclass|attr] 'and' right=  [ecore::eclass|attr] 'defined' 'as' condition=xexpression ; 

inferrer/ infer method

def dispatch void infer(model element, ijvmdeclaredtypeacceptor acceptor, boolean ispreindexingphase) {       acceptor.accept(element.toclass("example.mydsl")) [         (operation : element.operations) {             left = operation.left             right = operation.right             if (left.eisproxy()) {                 left = ecoreutil.resolve(left, operation) eclass             }                if (right.eisproxy()) {                 right = ecoreutil.resolve(right, operation) eclass             }             //field right class left out, works same             members += left.tofield(left.name,typeref(left.epackage.name+"."+left.name))                 members += operation.tomethod("conditionexpr",              typeref(void.type)) [                 body = operation.condition             ]                }     ]  } 

runtimemodule

    class mydslruntimemodule extends abstractmydslruntimemodule {         def class<? extends implicitlyimportedfeatures> bindimplicitlyimportedtypes() {        return myimportfeature }  } 

myimportfeature

class myimportfeature extends implicitlyimportedfeatures{ override protected getstaticimportclasses() {     (super.getstaticimportclasses() + #[packagefromworkspace]).tolist }  } 

i not sure if question. ususally emf generates constants eattributes if want access attributes themselfs either mydslpackage.literals.greeting__name or mydslpackage.einstance.getgreeting_name()

can give more hints on want do

update: here snippet on how java class reference eclass

thingy:{     val eclass eclazz = f.clazz     val uri = ecoreplugin.getepackagensuritogenmodellocationmap(true).get(eclazz.epackage.nsuri)     val rs = new resourcesetimpl     val r = rs.getresource(uri, true)     r.load(null)     val p = r.contents.head     if (p instanceof genmodel) {         val genclass = p.findgenclassifier(eclazz)         if (genclass instanceof genclass) {             println(genclass.qualifiedinterfacename)             members+=f.tofield(eclazz.name, genclass.qualifiedinterfacename.typeref)         }     } }