Eclipse AAS4J

📰 The Eclipse AAS4J 1.0.0-milestone-02 release is available on Maven Central Repository and includes the following artifacts implementing the AAS Specs – Part 1 V3.RC02: dataformat-core, dataformat-aasx, dataformat-xml, dataformat-json, dataformat-parent, and model.

Eclipse AA4J implements the specification of the Asset Administration Shell (AAS) such as metamodels, submodels, serialization and deserialization modules, validators, and transformation libraries based on the AAS specifications. It also contains all classes and properties as defined by the document 'Details of the Asset Administration Shell' published on Industrial Digital Twin Association (IDTA).

Note: AAS libraries for java previously available in admin-shell-io.

Project Structure

Eclipse AA4J consists of the following components:

• AAS Model
• Dataformat Library
• Validator

AAS Model

The AAS Model is an implementation of the Asset Administration Shell metamodel in Java. It contains all classes and properties as defined by the document 'Details of the Asset Administration Shell' published on Industrial Digital Twin Association (IDTA).

Please refer to AAS Model README for more information.

Dataformat Library

Eclipse AA4J contains an AAS Java Dataformat Library. The AAS Java Dataformat Library is a collection of software modules to serialize and deserialze instances of the Asset Administration Shell from and to Java instances. De-/serialization works according to the dataformat schemas published in the document 'Details of the Asset Administration Shell', published on Industrial Digital Twin Association (IDTA).

Build and Use

Some examples can be found on the documentation webpage.

You can build the project using Maven by simply executing at the repository root:

mvn clean package

or by integrating the respective modules as dependencies from Maven Central Repository, for instance:

<dependency>
  <groupId>org.eclipse.digitaltwin.aas4j</groupId>
  <artifactId>dataformat-json</artifactId>
  <version>latest-version</version>
<dependency>

AAS4J Project Structure

The project contains several modules:

• dataformat-parent Maven parent module that contains the respective de-/serializers for the different data formats.
• dataformat-core Location of the general classes and interfaces that are used by more than one de-/serializer.
• dataformat-aasx AASX de-/serializer
• dataformat-json JSON de-/serializer
• dataformat-rdf RDF de-/serializer
• dataformat-xml XML de-/serializer
• model Meta-model classes be instantiated
• validator Validator against the semantic restrictions of the AAS meta-model

AAS4J's predecessor contained serialization modules for AutomationML and OPC UA for which however no longer up-to-date specifications exist. Implementation is halted until the specs have been updated.

Additionally, the sources that are used for generating the static documentation using DocFX in the gh-pages branch are located in the docs folder.

How to Contribute

We always look for contributions, bug reports, feature requests etc. Please, read https://github.com/eclipse-digitaltwin/aas4j/blob/main/CONTRIBUTING.md for more information.

Contributors

An updated list of the committers can be found here: https://projects.eclipse.org/projects/dt.aas4j/who

Name	Affiliation	Github Account	Parent	Core	AASX	JSON	XML	RDF	UA-Nodeset	Validator	AutomationML
Mohammad Alreeni	Fraunhofer IWU						x
Sebastian Bader	Fraunhofer IAIS	sebbader	x					x		x
Matthias Böckmann	Fraunhofer IAIS	maboeckmann	x					x		x
Maximilian Conradi	Fraunhofer IESE				x		x
Helge Dickel	SAP SE	heldic	x			x	x
Daniel Espen	Fraunhofer IESE	daespen		x	x	x	x
Michael Jacoby	Fraunhofer IOSB	mjacoby	x	x		x	x				x
Jens Müller	Fraunhofer IOSB	JensMueller2709				x					x
Orthodoxos Kipouridis	SAP SE	akiskips	x			x	x
Bastian Rössl	Fraunhofer IOSB-INA	br-iosb				x			x
Frank Schnicke	Fraunhofer IESE	frankschnicke			x		x			x
Manuel Sauer	SAP SE	Manu3756	x
Arno Weiss	Fraunhofer IWU/SAP SE	arnoweiss				x			x
Jan Blume	Fraunhofer IOSB										x

This project was initiated by SAP and Fraunhofer to provide a foundation for the AAS development and to foster its dissemination.