public async Task ImportForeignAcTransLineCktOwners(WRLDCWarehouseDbContext _context, ILogger _log, string oracleConnStr, EntityWriteOption opt)
{
AcTransLineCktOwnerExtract acCktOwnerExtract = new AcTransLineCktOwnerExtract();
List <AcTransmissionLineCircuitOwnerForeign> acCktOwnersForeign = acCktOwnerExtract.ExtractAcTransLineCktOwnersForeign(oracleConnStr);
LoadAcTransCktOwner loadAcCktOwner = new LoadAcTransCktOwner();
foreach (AcTransmissionLineCircuitOwnerForeign acCktOwnerForeign in acCktOwnersForeign)
{
AcTransLineCktOwner insertedAcCktOwner = await loadAcCktOwner.LoadSingleAsync(_context, _log, acCktOwnerForeign, opt);
}
}
public async Task <AcTransLineCktOwner> LoadSingleAsync(WRLDCWarehouseDbContext _context, ILogger _log, AcTransmissionLineCircuitOwnerForeign acCktOwnerForeign, EntityWriteOption opt)
{
// check if entity already exists
AcTransLineCktOwner existingAcCktOwner = await _context.AcTransLineCktOwners.SingleOrDefaultAsync(aco => aco.WebUatId == acCktOwnerForeign.WebUatId);
// check if we should not modify existing entities
if (opt == EntityWriteOption.DontReplace && existingAcCktOwner != null)
{
return(existingAcCktOwner);
}
// find the AcTranLineCkt via the AcTranLineCkt WebUatId
int acCktWebUatId = acCktOwnerForeign.AcTranLineCktWebUatId;
AcTransLineCkt acTransCkt = await _context.AcTransLineCkts.SingleOrDefaultAsync(ss => ss.WebUatId == acCktWebUatId);
// if AcTransLineCkt doesnot exist, skip the import. Ideally, there should not be such case
if (acTransCkt == null)
{
_log.LogCritical($"Could not find AcTransLineCkt with WebUatId {acCktWebUatId} in warehouse while creating AcTransLineCktOwner with WebUat Id {acCktOwnerForeign.WebUatId}");
return(null);
}
// find the Owner of the AcTransLineCkt via the Owner WebUatId
int ownerWebUatId = acCktOwnerForeign.OwnerWebUatId;
Owner owner = await _context.Owners.SingleOrDefaultAsync(o => o.WebUatId == ownerWebUatId);
// if owner doesnot exist, skip the import. Ideally, there should not be such case
if (owner == null)
{
_log.LogCritical($"Could not find Owner with WebUatId {ownerWebUatId} in warehouse while creating AcTransLineCktOwner with WebUat Id {acCktOwnerForeign.WebUatId}");
return(null);
}
// check if we have to replace the entity completely
if (opt == EntityWriteOption.Replace && existingAcCktOwner != null)
{
_context.AcTransLineCktOwners.Remove(existingAcCktOwner);
}
// if entity is not present, then insert or check if we have to replace the entity completely
if (existingAcCktOwner == null || (opt == EntityWriteOption.Replace && existingAcCktOwner != null))
{
AcTransLineCktOwner acCktOwner = new AcTransLineCktOwner();
acCktOwner.OwnerId = owner.OwnerId;
acCktOwner.AcTransLineCktId = acTransCkt.AcTransLineCktId;
acCktOwner.WebUatId = acCktOwnerForeign.WebUatId;
_context.AcTransLineCktOwners.Add(acCktOwner);
await _context.SaveChangesAsync();
return(acCktOwner);
}
// check if we have to modify the entity
if (opt == EntityWriteOption.Modify && existingAcCktOwner != null)
{
existingAcCktOwner.OwnerId = owner.OwnerId;
existingAcCktOwner.AcTransLineCktId = acTransCkt.AcTransLineCktId;
await _context.SaveChangesAsync();
return(existingAcCktOwner);
}
return(null);
}
