public void Update(T entity)
{
var manager = SessionManager.Manager;
var session = manager.GetSession(manager.Current);
SqlConnection conn = null;
try
{
conn = (SqlConnection)session.DbInfo.Connection;
using (var command = conn.CreateCommand())
{
command.CommandType = CommandType.Text;
command.CommandText = CRUDBase.GetUpdateQuery(table, CanUpdate, IsWhere, (column, isUpdate) => GetValue(entity, column, isUpdate));
command.Transaction = (SqlTransaction)session.DbInfo.Transaction;
var rows = command.ExecuteNonQuery();
if (rows == 0)
{
ThrowConcurrencyException(entity);
}
entity.SetSystemFields(DateTime.UtcNow, entity.ModifiedBy, entity.Version + 1);
}
}
catch (SqlException e)
{
throw new Exception("unexpected error updating");
}
}
public void Delete(T entity)
{
var manager = SessionManager.Manager;
var session = manager.GetSession(manager.Current);
session.GetIdentityMap().Remove(entity.Id);
SqlConnection conn = null;
var query = string.Empty;
try
{
conn = (SqlConnection)session.DbInfo.Connection;
using (var command = conn.CreateCommand())
{
command.CommandType = CommandType.Text;
command.CommandText = CRUDBase.GetDeleteQuery(table, (f) =>
{
if (f == SystemColumns.Id)
{
return(entity.Id.GetSqlSyntax());
}
else if (f == SystemColumns.Version)
{
return(entity.Version.GetSqlSyntax());
}
throw new NotSupportedException();
});
command.Transaction = (SqlTransaction)session.DbInfo.Transaction;
var records = command.ExecuteNonQuery();
if (records == 0)
{
ThrowConcurrencyException(entity);
}
}
}
catch (SqlException e)
{
throw new Exception("unexpected error deleting");
}
}
public T Find(Guid id)
{
var manager = SessionManager.Manager;
var session = manager.GetSession(manager.Current);
var entity = (T)session.GetIdentityMap().Get(id);
if (entity == null)
{
SqlConnection conn = null;
try
{
conn = (SqlConnection)session.DbInfo.Connection;
var command = conn.CreateCommand();
command.CommandType = CommandType.Text;
command.CommandText = CRUDBase.GetLoadQuery(table, () => id.GetSqlSyntax());
var reader = command.ExecuteReader();
if (reader.Read())
{
entity = Load(id, reader);
string modifiedBy = reader[SystemColumns.ModifiedBy].ToString();
DateTime modified = DateTime.Parse(reader[SystemColumns.Modified].ToString());
int version = int.Parse(reader[SystemColumns.Version].ToString());
entity.SetSystemFields(modified, modifiedBy, version);
session.GetIdentityMap().Add(id, entity);
}
else
{
throw new Exception(table.Name + " " + id.ToString() + "does not exist");
}
}
catch (SqlException sqlEx)
{
throw new Exception("unexpected error finding " + table.Name + " " + id);
}
}
return(entity);
}
