public static int Execute(this DBConnectionWrapper conn, Sql sql, bool storeProcedure = false, DBTransactionWrapper trans = null)
{
IDbCommand command = conn.CreateCommand(sql, trans);
if (storeProcedure)
{
command.CommandType = CommandType.StoredProcedure;
}
int ret = 0;
try
{
ret = command.ExecuteNonQuery();
for (int i = 0; i < sql.Parameters.Count; i++)
{
var p = sql.Parameters[i];
if (p.Direction == ParameterDirection.InputOutput || p.Direction == ParameterDirection.Output || p.Direction == ParameterDirection.ReturnValue)
{
var val = ((DbParameter)command.Parameters[p.Name]).Value;
p.Output = (val == DBNull.Value) ? null : val;
}
}
}
catch (DbException ex)
{
//throw;
throw new SqlCmdException("Error occurred when running SQL!", sql, ex);
}
return(ret);
}
public static T GetSingleValue <T>(this DBConnectionWrapper conn, Sql sql, DBTransactionWrapper trans = null)
{
IDbCommand command = conn.CreateCommand(sql, trans);
try
{
object val = command.ExecuteScalar();
return(ParseFromDBValue <T>(val));
}
catch (DbException ex)
{
//throw;
throw new SqlCmdException("Error occurred when running SQL!", sql, ex);
}
}
public static List <T> Query <T>(this DBConnectionWrapper conn, Sql sql, DBTransactionWrapper trans = null) where T : new()
{
IDbCommand command = conn.CreateCommand(sql, trans);
try
{
using (IDataReader reader = command.ExecuteReader())
{
return(reader.ToList <T>());
}
}
catch (DbException ex)
{
//throw;
throw new SqlCmdException("Error occurred when running SQL!", sql, ex);
}
}
public static List <T> GetFirstColumn <T>(this DBConnectionWrapper conn, Sql sql, DBTransactionWrapper trans = null)
{
IDbCommand command = conn.CreateCommand(sql, trans);
var mapping = DBObjectMapping <SingleColumn <T> > .Get().ColumnMappingList.Single();
List <T> ret = new List <T>();
try
{
using (IDataReader reader = command.ExecuteReader())
{
SingleColumn <T> obj = new SingleColumn <T>();
Action <SingleColumn <T>, IDataRecord, int> setter = null;
if (reader.Read())
{
setter = mapping.GetPropSetterForRecord(reader.GetFieldType(0));
reader.SetProperty(obj, mapping, setter, 0);
ret.Add(obj.Val);
}
while (reader.Read())
{
reader.SetProperty(obj, mapping, setter, 0);
ret.Add(obj.Val);
}
}
}
catch (DbException ex)
{
//throw;
throw new SqlCmdException("Error occurred when running SQL!", sql, ex);
}
return(ret);
}
