The Java code generation is available via Papyrus SW designer, a Papyrus component. It can be used by installing the latest version of Papyrus. It allows to create Java source code from a class diagram.

Installation instructions

The Java features of Papyrus are available as part of the Papyrus Software Designer extra feature.

You can install it by using the Papyrus Software Designer update-site:

Or you can use the nightly build update site (paste following url in eclipse update site):

Then select "Papyrus Java profile, library and code generation (Incubation)" feature. You need JDT installed (which comes with most Eclipse packages).

Code generation from UML elements

You can generate code for a specific classifier or package in your UML model. To generate code, do the following:

When you generate code from a classifier, its required classifiers are also generated. Required classifiers are classifiers related for the generated classifier, e.g. typing one of its attributes, inheritance relationship, dependency relationship. When you generate code from a package (e.g. the root of your model), all of its classifiers, and their required classifiers, will be generated.

Generation preferences

You can change the Java code generation preferences using the Eclipse preferences menu, and choose Papyrus > Java code generation. Available options are:

Java profile and library

The installed Java feature, of Papyrus Software Designer, comes with a Java profile and a Java library. Furthermore, it also installs a generic code generation profile for meta-information (e.g. project name modeling).

Java profile

The Java profile adds stereotypes to model specific Java elements that otherwise cannot be modeled in UML. It also adds stereotypes for managing elements that you do not want to generate (e.g. <<NoCodeGen>>, <<External>>, <<ExternLibrary>> stereotypes). The stereotypes can be seen as tags to put on UML elements. To apply the Java profile:

Java library

The Java library provides Java primitives and their wrapper classes. To import, this library:

Common code generation profile

Papyrus Software Designer also offers a common code generation profile, that can be used for Java code generation. This profile lets the user model meta-information, e.g. path where code is generated.

To use this feature, first the Papyrus code generation profile must be applied:

Then you can apply the <<Project>> stereotype to your model (root element). This stereotype lets you

Incremental code generation

As said in the last section, the <<Project>> stereotype lets you choose incremental code generation. Currently there is an experimental state-based incremental code generator for Java in Papyrus Software Designer. Incremental code generation is seamless to the user, but this is what happens in reality:

Later we plan to add change-based incremental code generation for Java.