@Override
public <T> void delete(T instance) {
AbstractInstanceManager<EntityId, Entity> entityInstanceManager =
sessionContext.getEntityInstanceManager();
AbstractInstanceManager<RelationId, Relation> relationInstanceManager =
sessionContext.getRelationInstanceManager();
DatastoreSession<
EntityId,
Entity,
EntityMetadata,
EntityDiscriminator,
RelationId,
Relation,
RelationMetadata,
RelationDiscriminator,
PropertyMetadata>
datastoreSession = sessionContext.getDatastoreSession();
if (entityInstanceManager.isInstance(instance)) {
Entity entity = entityInstanceManager.getDatastoreType(instance);
sessionContext.getInstanceListenerService().preDelete(instance);
datastoreSession.getDatastoreEntityManager().deleteEntity(entity);
entityInstanceManager.removeInstance(instance);
entityInstanceManager.closeInstance(instance);
sessionContext.getInstanceListenerService().postDelete(instance);
} else if (relationInstanceManager.isInstance(instance)) {
Relation relation = relationInstanceManager.getDatastoreType(instance);
sessionContext.getInstanceListenerService().preDelete(instance);
datastoreSession.getDatastoreRelationManager().deleteRelation(relation);
relationInstanceManager.removeInstance(instance);
relationInstanceManager.closeInstance(instance);
sessionContext.getInstanceListenerService().postDelete(instance);
} else {
throw new XOException(instance + " is not a managed XO instance.");
}
}
@Override
public <T, M> CompositeObject migrate(
T instance,
MigrationStrategy<T, M> migrationStrategy,
Class<M> targetType,
Class<?>... targetTypes) {
AbstractInstanceManager<EntityId, Entity> entityInstanceManager =
sessionContext.getEntityInstanceManager();
Entity entity = entityInstanceManager.getDatastoreType(instance);
DatastoreSession<
EntityId,
Entity,
EntityMetadata,
EntityDiscriminator,
RelationId,
Relation,
RelationMetadata,
RelationDiscriminator,
PropertyMetadata>
datastoreSession = sessionContext.getDatastoreSession();
Set<EntityDiscriminator> entityDiscriminators =
datastoreSession.getDatastoreEntityManager().getEntityDiscriminators(entity);
MetadataProvider<EntityMetadata, EntityDiscriminator, RelationMetadata, RelationDiscriminator>
metadataProvider = sessionContext.getMetadataProvider();
TypeMetadataSet<EntityTypeMetadata<EntityMetadata>> types =
metadataProvider.getTypes(entityDiscriminators);
TypeMetadataSet<EntityTypeMetadata<EntityMetadata>> effectiveTargetTypes =
getEffectiveTypes(targetType, targetTypes);
Set<EntityDiscriminator> targetEntityDiscriminators =
metadataProvider.getEntityDiscriminators(effectiveTargetTypes);
datastoreSession
.getDatastoreEntityManager()
.migrateEntity(
entity, types, entityDiscriminators, effectiveTargetTypes, targetEntityDiscriminators);
entityInstanceManager.removeInstance(instance);
CompositeObject migratedInstance = entityInstanceManager.updateInstance(entity);
if (migrationStrategy != null) {
migrationStrategy.migrate(instance, migratedInstance.as(targetType));
}
entityInstanceManager.closeInstance(instance);
return migratedInstance;
}