protected async Task <TEntity[]> SynchronizeEntities(TRequest request, IServiceProvider provider, CancellationToken ct)
{
var mapper = provider.ProvideInstance <IMapper>();
await request.RunRequestHooks(RequestConfig, provider, ct).Configure();
var itemSource = RequestConfig.GetRequestItemSourceFor <TEntity>();
var items = ((IEnumerable <object>)itemSource.ItemSource(request)).ToArray();
items = await request.RunItemHooks <TEntity>(RequestConfig, provider, items, ct).Configure();
var deletedEntities = await DeleteEntities(request, provider, ct).Configure();
ct.ThrowIfCancellationRequested();
var entities = await Context.Set <TEntity>()
.SelectWith(request, RequestConfig)
.FilterWith(request, RequestConfig, provider)
.ToArrayAsync(ct)
.Configure();
var auditEntities = entities
.Select(x => (mapper.Map <TEntity, TEntity>(x), x))
.ToArray();
ct.ThrowIfCancellationRequested();
var joinedItems = RequestConfig
.Join(items.Where(x => x != null).ToArray(), entities)
.ToArray();
var createdEntities = await CreateEntities(request,
provider,
joinedItems.Where(x => x.Item2 == null).Select(x => x.Item1), ct).Configure();
ct.ThrowIfCancellationRequested();
var updatedEntities = await UpdateEntities(
request,
provider,
joinedItems.Where(x => x.Item2 != null), ct).Configure();
ct.ThrowIfCancellationRequested();
var mergedEntities = updatedEntities.Concat(createdEntities).ToArray();
await Context.ApplyChangesAsync(ct).Configure();
ct.ThrowIfCancellationRequested();
await request
.RunAuditHooks(RequestConfig, provider, deletedEntities.Concat(auditEntities), ct)
.Configure();
return(mergedEntities);
}
private async Task <(TEntity, TEntity)[]> DeleteEntities(TRequest request, IServiceProvider provider, CancellationToken ct)
{
var mapper = provider.ProvideInstance <IMapper>();
var whereClause = RequestConfig.GetSelectorFor <TEntity>().Get <TEntity>()(request);
var notWhereClause = whereClause.Update(
Expression.NotEqual(whereClause.Body, Expression.Constant(true)),
whereClause.Parameters);
var deleteEntities = await Context.Set <TEntity>()
.FilterWith(request, RequestConfig, provider)
.Where(notWhereClause)
.ToArrayAsync(ct);
var pairedEntities = deleteEntities
.Select(x => (mapper.Map <TEntity, TEntity>(x), x))
.ToArray();
await Context.Set <TEntity>().DeleteAsync(DataContext, deleteEntities, ct);
ct.ThrowIfCancellationRequested();
return(pairedEntities);
}
private async Task <GetAllResult <TOut> > _HandleAsync(TRequest request, IServiceProvider provider, CancellationToken token)
{
var mapper = provider.ProvideInstance <IMapper>();
await request.RunRequestHooks(RequestConfig, provider, token).Configure();
var entities = Context.Set <TEntity>()
.FilterWith(request, RequestConfig, provider)
.SortWith(request, RequestConfig, provider);
var items = Array.Empty <TOut>();
if (Options.UseProjection)
{
items = await entities.ProjectToArrayAsync <TEntity, TOut>(mapper.ConfigurationProvider, token).Configure();
token.ThrowIfCancellationRequested();
if (items.Length == 0)
{
if (RequestConfig.ErrorConfig.FailedToFindInGetAllIsError)
{
throw new FailedToFindException {
EntityTypeProperty = typeof(TEntity)
}
}
;
var defaultEntity = RequestConfig.GetDefaultFor <TEntity>();
if (defaultEntity != null)
{
items = new TOut[]
{
await defaultEntity.CreateResult <TRequest, TEntity, TOut>(request, RequestConfig, provider, token).Configure()
};
}
}
}
else
{
var resultEntities = await entities.ToArrayAsync(token).Configure();
token.ThrowIfCancellationRequested();
if (resultEntities.Length == 0)
{
if (RequestConfig.ErrorConfig.FailedToFindInGetAllIsError)
{
throw new FailedToFindException {
EntityTypeProperty = typeof(TEntity)
}
}
;
var defaultEntity = RequestConfig.GetDefaultFor <TEntity>();
if (defaultEntity != null)
{
resultEntities = new TEntity[] { RequestConfig.GetDefaultFor <TEntity>() }
}
;
}
await request.RunEntityHooks <TEntity>(RequestConfig, provider, entities, token).Configure();
items = await resultEntities.CreateResults <TRequest, TEntity, TOut>(request, RequestConfig, provider, token).Configure();
}
token.ThrowIfCancellationRequested();
var result = new GetAllResult <TOut>(items);
return(await request.RunResultHooks(RequestConfig, provider, result, token).Configure());
}
}
}
