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[SAFRAN-1323] Add case to get UseCase through DomainClass and Namespace #130

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[SAFRAN-1323] Add case to get UseCase through DomainClass and Namespace #130

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4a24fc1
[SAFRAN-1323] Add case to get UseCase through DomainClass and Namespace
VincBou Jul 23, 2026
3028b2b
[SAFRAN-1323] Improve access to UseCase using inverse reference
VincBou Jul 28, 2026
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41 changes: 36 additions & 5 deletions ...raal.design/src/org/obeonetwork/graal/design/services/requirements/RequirementsUtils.java
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Original file line number Diff line number Diff line change
Expand Up @@ -10,8 +10,18 @@
*******************************************************************************/
package org.obeonetwork.graal.design.services.requirements;

import java.util.Collection;
import java.util.stream.Stream;

import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature.Setting;
import org.eclipse.emf.ecore.util.ECrossReferenceAdapter;
import org.eclipse.sirius.business.api.session.Session;
import org.obeonetwork.dsl.environment.Namespace;
import org.obeonetwork.dsl.requirement.Requirement;
import org.obeonetwork.dsl.requirement.RequirementPackage;
import org.obeonetwork.graal.DomainClass;
import org.obeonetwork.graal.GraalPackage;
import org.obeonetwork.graal.Task;
import org.obeonetwork.graal.TasksGroup;
import org.obeonetwork.graal.UseCase;
Expand Down Expand Up @@ -76,22 +86,43 @@ public UseCase relatedUseCase(Requirement context) {
}
return null;
}

/**
* Try to interpret an object as an UseCase
* - return this if the object is a UseCase
* - return the UseCase associated to the group if the referencedObject can be interpreted as a group
* - return the UseCase associated to the task if the referencedObject can be interpreted as a task
* - return the UseCase associated to the domainClass or the parent namespace if the referencedObject can be interpreted as a domainClass
* - return the UseCase associated to the namespace if the referencedObject can be interpreted as a namespace
* - null otherwise
*
* @param context The context on which is applied the service
* @return the useCase, if a useCase is find, null otherwise
*/
public UseCase asUseCase(EObject context) {
if (context instanceof UseCase) {
return (UseCase) context;
} else if (context instanceof TasksGroup) {
return ((TasksGroup) context).getUseCase();
if (context instanceof UseCase useCase) {
return useCase;
} else if (context instanceof TasksGroup taskGroup) {
return taskGroup.getUseCase();
} else if (context instanceof DomainClass domainClass) {
ECrossReferenceAdapter semanticCrossReferencer = Session.of(domainClass).get().getSemanticCrossReferencer();
// Concat the inverse reference for the DomainClass and it's parent in case the link isn't direct
Stream<Setting> inverseReferences = Stream.concat(semanticCrossReferencer.getInverseReferences(domainClass, GraalPackage.eINSTANCE.getUseCase_DomainClasses(), true).stream(),
semanticCrossReferencer.getInverseReferences(domainClass.eContainer(), GraalPackage.eINSTANCE.getDomainModelRegistry_Namespaces(), true).stream());

return inverseReferences
.map(Setting::getEObject)
.filter(UseCase.class::isInstance)
.map(UseCase.class::cast)
.findFirst()
.orElse(null);
} else if (context instanceof Namespace namespace) {
return Session.of(namespace).get().getSemanticCrossReferencer().getInverseReferences(namespace, GraalPackage.eINSTANCE.getDomainModelRegistry_Namespaces(), true).stream()
.map(Setting::getEObject)
.filter(UseCase.class::isInstance)
.map(UseCase.class::cast)
.findFirst()
.orElse(null);
} else {
Task asTask = asTask(context);
if (asTask != null) {
Expand Down