public TOut ExecuteScalar <TOut>(PgSqlCommand sqlCommand)
{
Logger.Debug(() =>
{
return($"ExecuteScalar<{typeof(TOut).FullName}>::{sqlCommand.CommandAsPlainText()}");
});
TOut ret = default(TOut);
try
{
lock (_lock)
{
var command = PrepareCommand(sqlCommand.Command);
foreach (var npgsqlParameter in sqlCommand.Parameters)
{
command.Parameters.Add(npgsqlParameter.ToNpgsqlParameter());
}
ret = command.ExecuteScalar().CloneTo <TOut>();
EndCommand(command);
}
}
catch (Exception e)
{
Logger.DebugFormat($"ExecuteScalar<{typeof(TOut).FullName}>::{{command}}", sqlCommand.CommandAsPlainText());
Logger.DebugFormat($"ExecuteScalar<{typeof(TOut).FullName}>::{{e}}", e);
throw;
}
return(ret);
}
public int ExecuteNonQuery(PgSqlCommand sqlCommand)
{
Logger.Debug(() =>
{
return($"ExecuteNonQuery::{sqlCommand.CommandAsPlainText()}");
});
try
{
lock (_lock)
{
int ret;
var command = PrepareCommand(sqlCommand.Command);
foreach (var param in sqlCommand.Parameters)
{
command.Parameters.Add(param.ToNpgsqlParameter());
}
ret = command.ExecuteNonQuery();
EndCommand(command);
return(ret);
}
}
catch (Exception e)
{
Logger.ErrorFormat($"ExecuteNonQuery::{{e}}", e);
throw;
}
}
public IEnumerable <JObject> ExecuteReader(PgSqlCommand sqlCommand)
{
Logger.Debug(() =>
{
return($"ExecuteReader::{sqlCommand.CommandAsPlainText()}");
});
try
{
lock (_lock)
{
List <JObject> items = new List <JObject>();
var command = PrepareCommand(sqlCommand.Command);
foreach (var sqlCommandParameter in sqlCommand.Parameters)
{
var p = sqlCommandParameter.ToNpgsqlParameter();
command.Parameters.Add(p);
}
using (var reader = command.ExecuteReader())
{
var columns = reader.GetColumnSchema();
while (reader.Read())
{
var jo = new JObject();
for (int i = 0; i < reader.FieldCount; i++)
{
jo.Add(columns[i].ColumnName, DbExecuterHelper.ConvertFromDB(reader[i], columns[i]));
}
items.Add(jo);
}
}
EndCommand(command);
return(items);
}
}
catch (Exception e)
{
Console.WriteLine(sqlCommand.CommandAsPlainText());
Logger.Error(e, "ExecuteReader", sqlCommand.CommandAsPlainText());
throw;
}
}
public IEnumerable <T> ExecuteCollection <T>(QueryModel queryModel)
{
var psqlCommand = PsqlGeneratingQueryModelVisitor.GeneratePsqlQuery(queryModel, _table);
var pgCommand = new PgSqlCommand();
pgCommand.Command = psqlCommand.Statement;
pgCommand.Parameters.AddRange(psqlCommand.Parameters);
Debug.WriteLine(pgCommand.CommandAsPlainText());
return(new DbExecuter(_table.GetConnectionString()).ExecuteReader <T>(pgCommand));
}
