How to Build Your Own Product-Modeling Environment?

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How to Build Your Own
Product Modeling Environment
Tim Geisler
webXcerpt Software GmbH
tg@webxcerpt.com
CWG 2012, Berlin 2...

Product Modeling Environments

Product Modeling Environments:
Single Transactions

Product Modeling Environments:
PMEVC

Product Modeling Environments:
Eclipse-based SME

VClipse
● Eclipse-based textual
product modeling
environment
● for VC and IPC
● based on Xtext / EMF
● Open Source
Eclipse...

VClipse - VCML
● Textual language for
SAP objects
● Embedded languages
for dependencies
(procedures, conditions,
and const...

IDE for VCML
Validation
Content Assist
Quickfixes
Cross References

IDE for VCML
Outline
TemplatesFolding
Rename
refactoring
Where used?

Interface to SAP ECC (ALE, RFC)
● RFC interface
− Create, Read, Update, Delete
− Extract recursively: model extraction
● A...

Graphical or Textual
Product Modeling?
Deutsch limit:
You can’t have
more than 50
visual primitives
on the screen at
the s...

Focus on Textual Product Models
● Dependencies are written in textual languages
● Teamwork support through mature version
...

Specialized Modeling Environments

Why Own Specialized PME?
● Product modeling environments from SAP
have to suit all models of all SAP customers
● Customer-...

VClipse is Not (Yet) Your Own PME
● not (yet) customer-specific
● Several layers to extend Vclipse:
− As a user / modeler
...

Extending VClipse – as Modeler
Define your own templates
E.g., template for determining amount of a material
(specific cod...

Extending VClipse – as Programmer
Write your own plugins / extend VClipse plugins
Specific validation rules
● e.g. naming ...

Extending VClipse – as Programmer
Coding conventions / Framework code
● Classes and dependencies are required by
the „fram...

Extending VClipse – as Programmer
● Specific „intelligent“ templates
Implementation:

Specific Support for Variant Functions
● Implement specific validation
● Implement specific code templates
PFunction Z_COP...

Specifying Variant Functions
import "cstics.vcml" // contains all cstic definitions
variantfunction Z_COPY_DEFAULT_MV "Cop...

Extending VClipse – as Contributor
Testing language VCMLT for VCML models
(contributed to VClipse by Winfried Kung)
See ta...

Conceptual Gap
● SAP VC's concepts
● Implementation
● Standard languages
● Transactions
● VClipse
● Your concepts
● Specif...

Your Own Modeling Language
● Why?
− Tailored to your concepts and needs
− Means for specifying the product model
− Means f...

Example: ConfigModeler @
RFC
Editor/IDE
Editor/IDE
ConfigModeler
VClipse
CML
VCML
Code Generation

ConfigModeler – Initial Idea
StandardizedStandardized
productproduct
descriptionsdescriptions
FormalizedFormalized
product...

ConfigModeler – Languages
CMLUI: User Interface
CML: Product model
CMLT: Test cases

When to Create Own Language and
Product Modeling Environment?
● Schematic product specifications
● Similarly structured pr...

My Own Product-Modeling Environment
RFC
Editor/IDE
Editor/IDE
my ConfigModeler
VClipse
myCML
VCML
my Code Generation

Editor/IDE
my ConfigModeler
myCML
my Code
Generation
Grammar
Metamodel Scoping
Validation
Target
Architecture
Code
Generat...

Defining your
Modeling-Language Grammar
● using the Xtext grammar language
● from this grammar, the following is derived:
...

Defining your
Modeling-Language Metamodel
Represents all product models in the domain
(like a schema)
● EMF Ecore Meta Mod...

Scoping
Visibility of Objects for Cross References
The implementation (really that short!):

Defining your
Target Architecture
Clear: SAP Variant Configuration
Open aspects:
− Naming conventions
− Which objects shou...

Code Generation
Task: map myCML models (instances of your
metamodel) to VCML models
● Respect your target architecture
● E...

IDE Adaptions
● Xtext-based editors are highly extensible and
configurable through dependency injection
using Google Guice...

Effort

Effort
● Prototype for small language can be build in
about a week

Is This a New Idea?
No, in software engineering this idea is called
Model-Driven Software Development
● Huge number of fra...

Extending VClipse vs
Own Modeling Language
● With VClipse, you can start small.
− Need to learn only the required parts of...

Experiences at NSN
● Own modeling language (CML) used for 2/3 of all live
product models
● Fully integrated side languages...

Summary
● Eclipse-based external textual modeling
environments
● Various possibilites to extend VClipse
● Build own textua...

VClipse - Try It Out
● Ready-to-run from memory stick
● Eclipse 3.7.2 (Indigo) for Windows 32bit / 64 bit
● VClipse instal...

How to Build Your Own Product-Modeling Environment?

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