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restore hierarchical id manager functionality
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Jan Wittler
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Feb 5, 2023
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111 changes: 111 additions & 0 deletions
111
bundles/tools.vitruv.change.atomic/src/tools/vitruv/change/atomic/EChangeUuidManager.xtend
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,111 @@ | ||
| package tools.vitruv.change.atomic | ||
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| import org.eclipse.emf.ecore.EObject | ||
| import tools.vitruv.change.atomic.eobject.CreateEObject | ||
| import tools.vitruv.change.atomic.eobject.EObjectAddedEChange | ||
| import tools.vitruv.change.atomic.eobject.EObjectExistenceEChange | ||
| import tools.vitruv.change.atomic.eobject.EObjectSubtractedEChange | ||
| import tools.vitruv.change.atomic.feature.FeatureEChange | ||
| import tools.vitruv.change.atomic.uuid.UuidResolver | ||
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| import static com.google.common.base.Preconditions.checkArgument | ||
| import static com.google.common.base.Preconditions.checkState | ||
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| /** | ||
| * Provides logic for initializing the UUIDs within changes. | ||
| */ | ||
| class EChangeUuidManager { | ||
| val UuidResolver uuidResolver | ||
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| /** | ||
| * Initializes the manager with a {@link UuidResolver}. | ||
| * | ||
| * @param uuidResolver - | ||
| * the {@link UuidResolver} to use for UUID management | ||
| */ | ||
| new(UuidResolver uuidResolver) { | ||
| checkArgument(uuidResolver !== null, "uuid resolver must not be null") | ||
| this.uuidResolver = uuidResolver | ||
| } | ||
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| def static void setOrGenerateIds(Iterable<EChange> eChanges, UuidResolver uuidResolver) { | ||
| setOrGenerateIds(eChanges, uuidResolver, true) | ||
| } | ||
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| def static void setOrGenerateIds(Iterable<EChange> eChanges, UuidResolver uuidResolver, boolean endTransaction) { | ||
| val manager = new EChangeUuidManager(uuidResolver) | ||
| eChanges.forEach [ eChange | | ||
| manager.setOrGenerateIds(eChange) | ||
| ] | ||
| if (endTransaction) { | ||
| uuidResolver.endTransaction | ||
| } | ||
| } | ||
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| def void setOrGenerateIds(EChange eChange) { | ||
| switch eChange { | ||
| CreateEObject<?>: | ||
| setOrGenerateCreatedEObjectUuid(eChange) | ||
| EObjectExistenceEChange<?>: | ||
| setAffectedEObjectUuid(eChange) | ||
| FeatureEChange<?,?>: | ||
| setAffectedEObjectUuid(eChange) | ||
| } | ||
| switch eChange { | ||
| EObjectSubtractedEChange<?>: | ||
| setOldValueUuid(eChange) | ||
| } | ||
| switch eChange { | ||
| EObjectAddedEChange<?>: | ||
| setOrGenerateNewValueUuid(eChange) | ||
| } | ||
| } | ||
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| private def String getUuid(EObject object) { | ||
| val id = uuidResolver.getUuid(object) | ||
| checkState(id !== null, "uuid must not be null") | ||
| return id | ||
| } | ||
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| private def String getOrGenerateUuid(EObject object) { | ||
| try { | ||
| getUuid(object) | ||
| } | ||
| catch (IllegalStateException e) { | ||
| uuidResolver.registerEObject(object) | ||
| } | ||
| } | ||
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| private def void setOrGenerateNewValueUuid(EObjectAddedEChange<?> addedEChange) { | ||
| if (addedEChange.newValue === null) { | ||
| return; | ||
| } | ||
| addedEChange.newValueID = addedEChange.newValue.getOrGenerateUuid | ||
| } | ||
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| private def void setOldValueUuid(EObjectSubtractedEChange<?> subtractedEChange) { | ||
| if (subtractedEChange.oldValue === null) { | ||
| return; | ||
| } | ||
| subtractedEChange.oldValueID = subtractedEChange.oldValue.uuid | ||
| } | ||
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| private def void setAffectedEObjectUuid(EObjectExistenceEChange<?> existenceChange) { | ||
| val affectedEObject = existenceChange.affectedEObject | ||
| checkArgument(affectedEObject !== null, "existence change must have an affected EObject: %s", existenceChange) | ||
| existenceChange.affectedEObjectID = affectedEObject.uuid | ||
| } | ||
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| private def void setOrGenerateCreatedEObjectUuid(CreateEObject<?> existenceChange) { | ||
| val affectedEObject = existenceChange.affectedEObject | ||
| checkArgument(affectedEObject !== null, "existence change must have an affected EObject: %s", existenceChange) | ||
| existenceChange.affectedEObjectID = affectedEObject.getOrGenerateUuid | ||
| } | ||
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| private def void setAffectedEObjectUuid(FeatureEChange<?, ?> featureChange) { | ||
| val affectedEObject = featureChange.affectedEObject | ||
| checkArgument(affectedEObject !== null, "feature change must have an affected EObject: %s", featureChange) | ||
| featureChange.affectedEObjectID = affectedEObject.uuid | ||
| } | ||
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| } |
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