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Context Mapper

Context Mapper DSL (CML)

Build (master) codecov License Maven Central

ContextMapper is an open source tool providing a Domain-specific Language based on Domain-Driven Design (DDD) patterns for context mapping and service decomposition.

With the ContextMapper DSL language you can express DDD context maps. Once you have modeled your system with the language you can use the provided generators to create UML diagrams, service contracts, and calculate proposals for service decomposition with Service Cutter.

Checkout our website to get started. The Context Mapper project has originally been developed as part of research projects at OST (former HSR). You can find the project reports and further background information here.


System Requirements

To use the ContextMapper DSL (CML) you need the following tools:

Getting Started

If you want to use our Context Mapper tool, install the plugin in Eclipse or the extension in VS Code:

  1. Installation of Context Mapper:
  2. Find a detailed manual how to create your first CML project here.
  3. Examples which introduce the language (CML) capabilities can be found here:
  4. Further instructions, user guides and documentation can be found on our website

Getting Started (Standalone Library Usage)

If you want to use the Context Mapper DSL (CML) language and the generator tools as standalone library within your Java application you can add the following dependency to your project.


implementation 'org.contextmapper:context-mapper-dsl:6.9.0'



In our context-mapper-standalone-example repository you find an example project showing how to include the library within your project. It further contains code examples illustrating how to use the CML models and the generator tools (PlantUML, MDSL, etc.).


If you want to contribute and setup the IDE for this project on your local system follow the following instructions. Here you get the instructions in more details.

Building the Project

The project currently has two builds since we have to use Maven for building the Eclipse plugin but prefer Gradle in the standalone case. With Gradle you can only build the DSL and the IDE (LSP) project. It is further used to deploy these standalone JARs to the Maven central.

Complete Build with Eclipse Plugin (Maven)

The project uses the Maven Wrapper.

After cloning the project it can be built with the following command within the root directory of the project:

./mvnw clean install

Note: This is an Xtext project and the tests which are evaluating the correctness of the language grammar need an additional maven goal besides test to be executed. Use this command if you want to execute the tests:

./mvnw clean integration-test

Of course they are also executed with a clean install.

Standalone Build Only (Gradle)

To build the standalone projects only, you can use the Gradle Wrapper:

./gradlew clean build

Note: If you want to deploy the libraries into your local Maven repository, you need a GPG key to sign the artifacts:

./gradlew clean publishToMavenLocal -Psigning.keyId=<your-gpg-key-id> -Psigning.password=<gpg-passphrase> -Psigning.secretKeyRingFile=<path-to-gpg-keyring-file>

Setup Eclipse IDE

Since this is an Xtext project you need an Eclipse IDE to work on it. Download the Eclipse IDE for Java and DSL Developers from here. The latest version of Eclipse we worked with is 2019-12.

Importing the project

You can import the project with as an existing maven project (Import -> Existing Maven Project).

Build in Eclipse

After importing the project you will have lots of build errors. This is because you have to generate some Xtext sources first. There exists an eclipse launch configuration called 'GenerateContextMappingDSLInfrastructure' delivered with the project. Run this launch configuration (yes, even if there exist build errors). As soon this has completed, execute a clean build with Project -> Clean... -> Clean all projects.

That's it. You should have a clean workspace now without build errors.


Contribution is always welcome! Here are some ways how you can contribute:


ContextMapper is released under the Apache License, Version 2.0.