public List <HvdcLineForeign> ExtractHvdcLineForeign(string oracleConnString)
{
using (OracleConnection con = new OracleConnection(oracleConnString))
{
using (OracleCommand cmd = con.CreateCommand())
{
try
{
con.Open();
cmd.BindByName = true;
cmd.CommandText = @"select ID,LINE_NAME,FROM_SUB_ID,TO_SUB_ID,FROM_VOLTAGE,FROM_LOCATION_ID,TO_LOCATION_ID from REPORTING_WEB_UI_UAT.HVDC_LINE_MASTER
where :id=1 and LINE_NAME IS NOT NULL and ID IS NOT NULL";
// Assign id parameter
OracleParameter id = new OracleParameter("id", 1);
cmd.Parameters.Add(id);
//Execute the command and use DataReader to display the data
OracleDataReader reader = cmd.ExecuteReader();
List <HvdcLineForeign> hvdcLinesForeign = new List <HvdcLineForeign>();
while (reader.Read())
{
HvdcLineForeign hvdcLineForeign = new HvdcLineForeign();
hvdcLineForeign.WebUatId = reader.GetInt32(0);
hvdcLineForeign.Name = reader.GetString(1);
hvdcLineForeign.FromSSWebUatId = reader.GetInt32(2);
hvdcLineForeign.ToSSWebUatId = reader.GetInt32(3);
hvdcLineForeign.VoltLevelWebUatId = reader.GetInt32(4);
hvdcLineForeign.FromStateWebUatId = reader.GetInt32(5);
hvdcLineForeign.ToStateWebUatId = reader.GetInt32(6);
hvdcLinesForeign.Add(hvdcLineForeign);
}
reader.Dispose();
return(hvdcLinesForeign);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return(null);
}
}
}
}
public async Task <HvdcLine> LoadSingleAsync(WRLDCWarehouseDbContext _context, ILogger _log, HvdcLineForeign hvdcLineForeign, EntityWriteOption opt)
{
// check if entity already exists
HvdcLine existingHvdcLine = await _context.HvdcLines.SingleOrDefaultAsync(lr => lr.WebUatId == hvdcLineForeign.WebUatId);
// check if we should not modify existing entities
if (opt == EntityWriteOption.DontReplace && existingHvdcLine != null)
{
return(existingHvdcLine);
}
// find the FromSubstation via the FromSSWebUatId
int fromSSWebUatId = hvdcLineForeign.FromSSWebUatId;
Substation fromSS = await _context.Substations.SingleOrDefaultAsync(ss => ss.WebUatId == fromSSWebUatId);
// if FromSubstation doesnot exist, skip the import. Ideally, there should not be such case
if (fromSS == null)
{
_log.LogCritical($"Unable to find FromSubstation with webUatId {fromSSWebUatId} while inserting HvdcLine with webUatId {hvdcLineForeign.WebUatId} and name {hvdcLineForeign.Name}");
return(null);
}
// find the ToSubstation via the ToSSWebUatId
int toSSWebUatId = hvdcLineForeign.ToSSWebUatId;
Substation toSS = await _context.Substations.SingleOrDefaultAsync(ss => ss.WebUatId == toSSWebUatId);
// if ToSubstation doesnot exist, skip the import. Ideally, there should not be such case
if (toSS == null)
{
_log.LogCritical($"Unable to find ToSubstation with webUatId {toSSWebUatId} while inserting HvdcLine with webUatId {hvdcLineForeign.WebUatId} and name {hvdcLineForeign.Name}");
return(null);
}
// find the FromState via the State WebUatId
int fromStateWebUatId = hvdcLineForeign.FromStateWebUatId;
State fromState = await _context.States.SingleOrDefaultAsync(s => s.WebUatId == fromStateWebUatId);
// if state doesnot exist, skip the import. Ideally, there should not be such case
if (fromState == null)
{
_log.LogCritical($"Unable to find FromState with webUatId {fromStateWebUatId} while inserting HvdcLine with webUatId {hvdcLineForeign.WebUatId} and name {hvdcLineForeign.Name}");
return(null);
}
// find the ToState via the State WebUatId
int toStateWebUatId = hvdcLineForeign.ToStateWebUatId;
State toState = await _context.States.SingleOrDefaultAsync(s => s.WebUatId == toStateWebUatId);
// if toState doesnot exist, skip the import. Ideally, there should not be such case
if (toState == null)
{
_log.LogCritical($"Unable to find ToState with webUatId {toStateWebUatId} while inserting HvdcLine with webUatId {hvdcLineForeign.WebUatId} and name {hvdcLineForeign.Name}");
return(null);
}
int voltLevelWebUatId = hvdcLineForeign.VoltLevelWebUatId;
VoltLevel voltLevel = await _context.VoltLevels.SingleOrDefaultAsync(v => v.WebUatId == voltLevelWebUatId);
// if voltLevel doesnot exist, skip the import. Ideally, there should not be such case
if (voltLevel == null)
{
_log.LogCritical($"Unable to find VoltLevel with webUatId {voltLevelWebUatId} while inserting HvdcLine with webUatId {hvdcLineForeign.WebUatId} and name {hvdcLineForeign.Name}");
return(null);
}
// check if we have to replace the entity completely
if (opt == EntityWriteOption.Replace && existingHvdcLine != null)
{
_context.HvdcLines.Remove(existingHvdcLine);
}
// if entity is not present, then insert or check if we have to replace the entity completely
if (existingHvdcLine == null || (opt == EntityWriteOption.Replace && existingHvdcLine != null))
{
HvdcLine newHvdcLine = new HvdcLine();
newHvdcLine.Name = hvdcLineForeign.Name;
newHvdcLine.FromStateId = fromState.StateId;
newHvdcLine.ToStateId = toState.StateId;
newHvdcLine.FromSubstationId = fromSS.SubstationId;
newHvdcLine.ToSubstationId = toSS.SubstationId;
newHvdcLine.VoltLevelId = voltLevel.VoltLevelId;
newHvdcLine.WebUatId = hvdcLineForeign.WebUatId;
_context.HvdcLines.Add(newHvdcLine);
await _context.SaveChangesAsync();
return(newHvdcLine);
}
// check if we have to modify the entity
if (opt == EntityWriteOption.Modify && existingHvdcLine != null)
{
existingHvdcLine.Name = hvdcLineForeign.Name;
existingHvdcLine.FromStateId = fromState.StateId;
existingHvdcLine.ToStateId = toState.StateId;
existingHvdcLine.FromSubstationId = fromSS.SubstationId;
existingHvdcLine.ToSubstationId = toSS.SubstationId;
existingHvdcLine.VoltLevelId = voltLevel.VoltLevelId;
await _context.SaveChangesAsync();
return(existingHvdcLine);
}
return(null);
}
