public async Task <IEnumerable <object> > Handle(UpdateEntitiesCommand <TContext> request, CancellationToken cancellationToken)
{
try
{
var entityType = _commandsHelper.GetEntityType(request.Entities);
_transactionService.StartTransaction();
var entityCollection = _transactionService.GetCollection(entityType);
var edgesCollection = _transactionService.GetCollection <EntityNode, EntityNodesCollection>();
await _commandsHelper.VerifyEntities(request.Entities, edgesCollection, SecurityRight.Update);
await entityCollection.Update(request.Entities);
_transactionService.CommitTransaction();
await NotifyEntitiesUpdate(request.Entities);
return(request.Entities);
}
catch (Exception e)
{
_transactionService.AbortTransaction();
throw new EntitiesUpdateException("Entities update failed", e);
}
}
public async Task <IEnumerable <object> > Handle(CreateEntitiesCommand <TContext> request, CancellationToken cancellationToken)
{
try
{
var entityType = _commandsHelper.GetEntityType(request.Entities);
_transactionService.StartTransaction();
var entityCollection = _transactionService.GetCollection(entityType);
var edgesCollection = _transactionService.GetCollection <EntityNode, EntityNodesCollection>();
var parent = await GetParentNode(edgesCollection, request.ParentId);
var treeEdges = request.Entities
.Select(x => CreateTreeEdge(x, parent, entityCollection))
.ToList();
ValidateTreeEdges(edgesCollection, treeEdges);
await edgesCollection.Add(treeEdges);
await entityCollection.Add(request.Entities);
_transactionService.CommitTransaction();
await NotifyEntitiesCreation(request.Entities, parent);
return(request.Entities);
}
catch (Exception e)
{
_transactionService.AbortTransaction();
throw new EntitiesCreationException("Entities creation failed", e);
}
}
public async Task <Unit> Handle(DeleteEntitiesCommand <TContext> request, CancellationToken cancellationToken)
{
try
{
var entityType = _commandsHelper.GetEntityType(request.Entities);
var nodesId = _commandsHelper.GetEntitiesId(request.Entities);
_transactionService.StartTransaction();
var edgesCollection = _transactionService.GetCollection <EntityNode, EntityNodesCollection>();
var treeNodes = await _commandsHelper.VerifyEntities(nodesId, edgesCollection, SecurityRight.Delete);
var deletedNodes = new List <EntityNode>();
foreach (var treeNode in treeNodes)
{
deletedNodes.AddRange(await DeleteEntityAndDescendants(treeNode, edgesCollection));
}
_transactionService.CommitTransaction();
await NotifyEntitiesDeletion(deletedNodes);
return(Unit.Value);
}
catch (Exception e)
{
_transactionService.AbortTransaction();
throw new EntitiesDeleteException("Entities delete failed", e);
}
}
