[gmf-dev] Support to the OCL parser for navigation of UML Association Cl

[Vishwanath Ramaswamy <vramaswa@xxxxxxxxxx>]

GMF Runtime Updates:

To implement support to the OCL parser for navigation of UML Association Classes and navigation of Associations using qualifiers. The OCL parser and helper APIs were refactored to support this. Added several new EClasses extending the Ecore metamodel with the following UML constructs required by OCL: AssociationEnd (extends EReference) and Qualifier (extends ETypedElement) AssociationClass (extends EClass) and AssociationClassEnd (extends EReference) Operation (extends EOperation) Applications can use these metaclasses in their metamodels (or adapt their existing metamodels to them) to get the corresponding OCL support.  The parser's Environment API is now made public to enable clients to provide the parser with an environment implementation that can map their metaclasses as appropriate to these interfaces and the basic Ecore ones.  This is most easily done by implementing an EnvironmentFactory (new interface) and initializing an IOclHelper with it.  This obsoletes the ModelingLevel concept in the OCL core. A stratospheric view of this refactoring sees the following changes: the IUserModelSupport API and extension point are eliminated  Metamodel mappings for the OCL parser are now accomplished by implementing customized parser Environments the com.ibm.xtools.emf.msl.ocl plug-in is eliminated.  The IOclHelper API is moved into the OCL parser as com.ibm.xtools.emf.ocl.helper.   Contribution by:  Christian Damus Reviewed and Committed By : Vishy Ramaswamy