source: branches/HeuristicLab.Hive/sources/HeuristicLab.Hive/HeuristicLab.Hive.Server.LINQDataAccess/3.3/BaseDao.cs @ 4710

#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * HeuristicLab is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using System.Data.Linq;
using HeuristicLab.Hive.Tracing;

namespace HeuristicLab.Hive.Server.LINQDataAccess {
  public abstract class BaseDao<TBusiness, TDatabaseEntity> {
    private static ContextFactory contextFactory = new ContextFactory();

    public static HiveDataContext Context {
      get {
        return contextFactory.CurrentContext as HiveDataContext;
      }
    }

    protected void CommitChanges() {      
      try {
        Context.SubmitChanges(ConflictMode.ContinueOnConflict);
      } catch (ChangeConflictException e) { 
        Logger.Warn("Concurrency Exception! " + e.Message);
        foreach (ObjectChangeConflict conflict in Context.ChangeConflicts) { 
          Logger.Info("Conflicted: ");
          foreach (MemberChangeConflict memberChangeConflict in conflict.MemberConflicts) {
            Logger.Info("    Member in Conflict: " + memberChangeConflict.Member.Name);
            Logger.Info("    Database Value: " + memberChangeConflict.DatabaseValue);
            Logger.Info("    Original value: " + memberChangeConflict.OriginalValue);
            Logger.Info("    Current value: " + memberChangeConflict.CurrentValue);              
          }
          conflict.Resolve(RefreshMode.KeepChanges);
        }
        try {
          Context.SubmitChanges();
        }
        catch {
          Logger.Error("Could not resolve conflict!");
        }
      }
    }

    public abstract TDatabaseEntity DtoToEntity(TBusiness source, TDatabaseEntity target);
    public abstract TBusiness EntityToDto(TDatabaseEntity source, TBusiness target);

  }
}