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© SAP AG 2009. All rights reserved. / Page 2
OpenModeling
Adapted from presentation at Code Generation 2011, Cambridge
Graphiti Approach
No code generation but: Uses a runtime engine Programmed using a Java API Easy (relatively) to understand code Easy to keep up with evolving metamodel
But … Programming the editor in Java is much (simple and
repetitive) work
© SAP AG 2009. All rights reserved. / Page 3
OpenModeling
Adapted from presentation at Code Generation 2011, Cambridge
The Spray Graphiti Generator
Started out as generic generator Had to be adapted to the PMW project Is currently partly generic, partly project specific
Used by non IT users in production Works well (at least for PMW )
© SAP AG 2009. All rights reserved. / Page 4
OpenModeling
Adapted from presentation at Code Generation 2011, Cambridge
The Spray DSL
class Product icon "Product16.png": container (figure="PmwProduct“) [ text ( bold ) "Product“ ; text ( italic) name ; text ( normal) "V" version ; ] [ reference attributeSpecs : connection ( ) reference note : connection ( ) ] behavior [ create palette “PartPalette” openVersionedPartEditor "Open Part“ ; selectInExplorer "Select In Explorer“; deletePart "Delete Part" ; refresh "Refresh Diagram“ ; ]
Define visualization for metaclass
Product
Definition of shape
Contents of the
container
References to properties of
Product
References of product shown as
connections
Behaviour for
Product shape
Popup menu
Will be in palette to create in named
compartment
Icon shown in palette
© SAP AG 2009. All rights reserved. / Page 5
OpenModeling
Adapted from presentation at Code Generation 2011, Cambridge
The Spray DSL
class ConceptComposition icon "connection16.gif“ : connection (width=2) [ from part to concept toText multiplicity ]
Define visualization for metaclass
ConceptComposition
Shown as a connection (line)
Part and concept are references in class
ConceptComposition
Text to show at the “to” side, also options for “from” and middle of
connection
© SAP AG 2009. All rights reserved. / Page 6
OpenModeling
Adapted from presentation at Code Generation 2011, Cambridge
Spray Generator
Using textual model to define graphical editor Xtext, Xtend, Xpand
Mixing generated and handwritten code by design Uses Generation Gap pattern Full access to Graphiti API Managed by simply moving a generated file from “src-gen” to
“src” folder Generation of code from Spray DSL remains possible in full
project life-cycle.
© SAP AG 2009. All rights reserved. / Page 7
OpenModeling
Adapted from presentation at Code Generation 2011, Cambridge
Spray Future
Spray will become open source later this year Oops, already there at:
http://code.google.com/a/eclipselabs.org/p/spray/ Version 0.1 will be the version used for PMW Need to generalize PMW specific generator code and then … first contribution expected a.s.a.p.
EPL License Might become an Eclipse project (or part of an existing
Eclipse project)
Plans Growing Spray by adding more features as we go …..
