#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2013 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;
using System.Data.OracleClient;
using HeuristicLab.DataImporter.DbExplorer.Interfaces;

namespace HeuristicLab.DataImporter.DbExplorer.Oracle {
  public class OracleConnection : DbConnectionBase {
    private string constring;

    public OracleConnection(string databaseName, string userName, string password)
      : base(databaseName, userName, password) {
      this.constring = "Server=" + databaseName;
      this.constring += "; User ID=" + userName + "; Password=" + password;
    }

    public OracleConnection(string host, string port, string serviceName, string userName, string password)
      : base(host, userName, password) {
      this.constring = String.Format("Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST={0}) (PORT={1}))(CONNECT_DATA=(SERVICE_NAME={2})))" +
        ";User Id={3};Password={4};", host, port, serviceName, userName, password);
    }

    public override System.Data.Common.DbConnection CreateConnection() {
      return new System.Data.OracleClient.OracleConnection(constring);
    }

    public override bool TestConnection() {
      System.Data.Common.DbConnection con = null;
      try {
        con = this.CreateConnection();
        con.Open();
        this.ErrorMessage = "";
        return true;
      }
      catch (OracleException e) {
        this.ErrorMessage = e.Message;
        this.CreateConnection().Close();
        return false;
      }
      finally {
        if (con != null)
          con.Close();
      }
    }
  }
}