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In the context of MDS, we offer several tasks for master (MA), bachelor (BA) and semester (SE) theses, with both theoretical and practical focus. The concrete description of work is adapted based on the type of project and the
student's preferences. We also invite students to propose own project descriptions.
To increase the user experience with MDS, a tight
integration into a UML-tool is key. Integration could include:
syntactical (and semantical) consistency checks, generation as
push-button, macros for faster creation of models, OCL syntax checks,
etc.
In this project, the student investigates possible integration
strategies, works out a concept for one UML-tool, and implements it.
Description will follow soon...
The increasing complexity of todays software systems makes
it difficult to ensure that they meet the required safety and security
properties. One way to ensure these properties is theorem proving, i.e.
doing computer-supported formal proofs. Intelligibly, such proofs need
a formal specification of the system. In the context of UML, the Object
Constraint Language (OCL) was proposed as a formal extension. OCL
allows one to constrain UML models, e.g. by adding pre-conditions,
post-conditions and invariants to class-diagrams.
In our group, we
develop a interactive theorem prover environment (called HOL-OCL) which
supports formal reasoning over UML/OCL specifications, but at the
moment lacks an integration into the MDS environment.
In this
project, the student investigates possible integration strategies of
the HOL-OCL into the MDS framework; e.g., by providing a XSLT for
generating HOL-OCL syntax or extending HOL-OCL (which is written in
SML) to support the MDS intermediate format..
At the moment, MDS code generation is unidirectional and
does not take care of previoussly generated versions. The generated
code, however, will be changed by programmers filling out methods,
adding comments or even doing refactorings. In doing so, the model and
source code run out of sync.
In this project, we investigate ways to
deal with synchronization of model and source code. Potential
strategies could be: tagging of protected regions in the source code,
merging of old and new versions, bidirectional generation between model
and source code.
Description will follow soon...
The core functionality of MDS is to generate platform
specific code from a UML-model. So far, code generators for Java with
JAAS and for Java with Permis have been created using XSLT.
In this
project, existing code generators are extended and/or generators for
additional platforms such as .NET or WebServices are implemented.
Service Oriented Architectures (SOAs) based on Web
Services are the current state of the art for offering functionality in
heterogeneous environments. However, such services need to be
integrated to form actual business processes. BPEL (Business Process
Execution Language) is a XML-based standard by OASIS to formally
describe such executable business processes based on Web Services. BPEL
processes are intended to be executed by a process engine. On top of
BPEL, CDL (Choreography Description Language, a standard by W3C), is
used to describe the cross-organisational choreography of business
processes, basically the properties of message-based process
interactions across organisational domains.
The goal of this project
is to enhance an existing design tool for business processes such that
BPEL and CDL representations are generated directly from existing
process and choreography descriptions in different XML based language
specifications. The work comprises an analysis of different integration
strategies as well as an implementation using XSL as transformation
language.
Jurgen Doser, IFW C48.2, doserj@inf.ethz.ch, Tel 63 20993
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