protected override void Dispose(bool explicitDispose)
{
_referenceKeyProvider = null;
_baseCtx = null;
//
base.Dispose(explicitDispose);
}
// TODO: Put strings into the resources.
//
async Task P_SaveAsync(TEntity[] entityCollection, SaveOpCode opCode, bool prohibitReferenceKeyAssignment, IContext ctx = default)
{
if (entityCollection is null)
{
throw new ArgumentNullException(paramName: nameof(entityCollection));
}
//
var entityCollectionLength = entityCollection.Length;
if (entityCollectionLength > 0)
{
var entityCollectionLowerBound = entityCollection.GetLowerBound(dimension: 0);
var locEntityCollection = new P_EntityChangeTrackingStateWrap <TEntity> [entityCollectionLength];
var ct = ctx.Ct();
var efContext = GetDataChangeEfDbContext();
switch (opCode)
{
case SaveOpCode.Write:
if (prohibitReferenceKeyAssignment)
{
for (var offset = 0; offset < entityCollectionLength; offset++)
{
var entity = entityCollection[offset + entityCollectionLowerBound];
if (entity is null)
{
throw new ArgumentNullException(paramName: $"{nameof(entityCollection)}[{offset + entityCollectionLowerBound:d}]");
}
else
{
locEntityCollection[offset].Entity = entity;
locEntityCollection[offset].State = entity.IsNew ? EntityState.Added : EntityState.Modified;
}
}
}
else
{
IReferenceKeyProvider <TReferenceKey> keyProvider = default;
for (var offset = 0; offset < entityCollectionLength; offset++)
{
var entity = entityCollection[offset + entityCollectionLowerBound];
if (entity is null)
{
throw new ArgumentNullException(paramName: $"{nameof(entityCollection)}[{offset + entityCollectionLowerBound:d}]");
}
else
{
locEntityCollection[offset].Entity = entity;
if (entity.IsNew)
{
keyProvider = keyProvider ?? await P_RequireReferenceKeyProviderAsync(ctx : ctx).ConfigureAwait(false);
entity.ReferenceKey = await keyProvider.NextKeyAsync(ctx : ctx).ConfigureAwait(false);
locEntityCollection[offset].State = EntityState.Added;
}
else
{
locEntityCollection[offset].State = EntityState.Modified;
}
}
}
}
break;
case SaveOpCode.Insert:
if (prohibitReferenceKeyAssignment)
{
for (var offset = 0; offset < entityCollectionLength; offset++)
{
var entity = entityCollection[offset + entityCollectionLowerBound];
if (entity is null)
{
throw new ArgumentNullException(paramName: $"{nameof(entityCollection)}[{offset + entityCollectionLowerBound:d}]");
}
else
{
locEntityCollection[offset].Entity = entity;
locEntityCollection[offset].State = EntityState.Added;
}
}
}
else
{
IReferenceKeyProvider <TReferenceKey> keyProvider = default;
for (var offset = 0; offset < entityCollectionLength; offset++)
{
var entity = entityCollection[offset + entityCollectionLowerBound];
if (entity is null)
{
throw new ArgumentNullException(paramName: $"{nameof(entityCollection)}[{offset + entityCollectionLowerBound:d}]");
}
else
{
if (entity.IsNew)
{
keyProvider = keyProvider ?? await P_RequireReferenceKeyProviderAsync(ctx : ctx).ConfigureAwait(false);
entity.ReferenceKey = await keyProvider.NextKeyAsync(ctx : ctx).ConfigureAwait(false);
}
locEntityCollection[offset].Entity = entity;
locEntityCollection[offset].State = EntityState.Added;
}
}
}
break;
case SaveOpCode.Update:
for (var offset = 0; offset < entityCollectionLength; offset++)
{
var entity = entityCollection[offset + entityCollectionLowerBound];
if (entity is null)
{
throw new ArgumentNullException(paramName: $"{nameof(entityCollection)}[{offset + entityCollectionLowerBound:d}]");
}
else
{
locEntityCollection[offset].Entity = entity;
locEntityCollection[offset].State = EntityState.Modified;
}
}
break;
case SaveOpCode.Delete:
for (var offset = 0; offset < entityCollectionLength; offset++)
{
var entity = entityCollection[offset + entityCollectionLowerBound];
if (entity is null)
{
throw new ArgumentNullException(paramName: $"{nameof(entityCollection)}[{offset + entityCollectionLowerBound:d}]");
}
else
{
locEntityCollection[offset].Entity = entity;
locEntityCollection[offset].State = EntityState.Deleted;
}
}
break;
default:
throw new NotSupportedException(message: $"Store operation code '{opCode}' is not supported.");
}
// Сохранение.
//
var saveFault = default(Exception);
try {
for (var y = 0; y < entityCollectionLength; y++)
{
try {
(locEntityCollection[y].Entry = efContext.Entry(entity: locEntityCollection[y].Entity)).State = locEntityCollection[y].State;
}
catch (Exception exception) {
throw
new EonException(
message: $"An exception occurred while placing the entity in EF context (change tracker).{Environment.NewLine}\tEntity ({y + 1:d} from {entityCollectionLength:d}):{locEntityCollection[ y ].Entity.FmtStr().GNLI2()}{Environment.NewLine}\tPlacing entity state:{locEntityCollection[ y ].State.FmtStr().GNLI2()}{Environment.NewLine}\tStore operation code:{opCode.FmtStr().GNLI2()}",
innerException: exception);
}
}
//
try {
await efContext.SaveChangesAsync(acceptAllChangesOnSuccess : true, ct : ct).ConfigureAwait(false);
}
catch (Exception exception) {
#if TRG_NETFRAMEWORK
if (exception is OptimisticConcurrencyException || exception is DbUpdateConcurrencyException)
#else
if (exception is DbUpdateConcurrencyException)
#endif
{ throw new DataStorageOptimisticConcurrencyException(message: $"Объект:{(locEntityCollection.Length == 1 ? locEntityCollection[ 0 ].Entity?.ToString() : $"<коллекция из {locEntityCollection.Length:d} элементов>").FmtStr().GNLI2()}"); }
throw;
}
}
catch (Exception exception) {
saveFault = exception;
throw;
}
finally {
try {
for (var y = 0; y < entityCollectionLength; y++)
{
locEntityCollection[y].Entry.State = EntityState.Detached;
}
}
catch (Exception exception) {
if (saveFault is null)
{
throw;
}
else
{
throw new AggregateException(saveFault, exception);
}
}
}
}
}
