Developing Model-to-Model Transformations - Eclipse Modeling Project: A Domain-Specific Language Toolkit - page 267

transformation dnc2jee( in modelIn : dnc, out modelOut : java);

import library Strings;

modeltype dnc uses "http://www.eclipse.org/2008/dnc";
modeltype oocore uses "http://www.eclipse.org/2008/oocore";
modeltype ecore uses "http://www.eclipse.org/emf/2002/Ecore";
modeltype java uses "java.xmi";

main () {
modelIn.rootObjects()[Package]-> map toPackage();

}

Cashier Person Phone

0..-1

«role» «party» «thing»

0..1

BigDecimal:calculateTotalSales() firstName:String

lastName:String

type:String
countryCode:String
areaCode:String
number:String

0..1

Address

«place»

street:String
city:String
province:String
country:String
postalCode:String

Figure 6-20 Test color model

The Strings library is imported because we will need it shortly. Each of our
four domain models is declared in modeltype statements at the top of the file,
just above the main mapping that invokes a toPackage() mapping. The pack-
age names are mapped to each other, followed by a series of mappings that con-
vert specific archetypes to Entity or Stateful beans. Finally, subpackages are
processed recursively. The rest of the transformation definition includes com-
ments that should adequately describe how it works.