Combean/Grooml a simple modelling language for the Java platform
Thomas Schickinger combean@sourceforge.net
Optimization for everybody
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O.R. Technology should be for everybody:
Modelling languages provide simple access to optimization technology. An increasing set of problems can be solved without expert knowledge by applying powerful, generic optimization codes. Possible applications can be found everywhere...
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Why has O.R. Technology not yet made it into the 'ordinary' enterprise application developer's toolkit
The integration challenge
General purpose O.R. Systems Modelling gap Mathematical models Technical (Often) special modelling gap languages or native language APIs (C/C+ +/Fortran/...)
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Enterprise Applications Business object models Dominated by Java and .Net
The integration of O.R. Technology into Enterprise Applications ...

... requires expert knowledge and ... only gets some support by expensive high-end, commercial systems.
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→ Applications with simple optimization requirements need a simple solution!
Objectives of Grooml
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A mathematical modelling language that is

Expressive Simple to learn Easy to integrate with enterprise applications written in Java
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Use cases:

Applications where constructing the model is no performance bottleneck Rapid prototyping Teaching
Grooml model = Groovy code
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Grooml models are real Groovy code:

Leverage expressiveness of Groovy Language easy to learn for Java/Groovy developers Direct integration of Java or Groovy business objects Access to numerous tools and libraries available in the Java+Groovy world (graph drawing, interfaces to office applications, XML import/export, networking, s...)
Why Groovy
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Dynamic scripting language → supports flexible definition of domain-specific languages:

'Pretended' methods and data members Builder pattern Categories

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