using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Cosmos.Debug.Common {
  using System;
  using System.Collections.Generic;
  using System.Data.Objects;
  using System.Data.SqlClient;
  using System.Linq;
  using System.Text;

  namespace PKNOA {
  //  public class Sql {
  //    public readonly SqlConnection Connection;

  //    public Sql(string aConnStr) {
  //      Connection = new SqlConnection("Data Source=" + aConnStr + @"Integrated Security=True;MultipleActiveResultSets=True");
  //      Connection.Open();
  //    }

  //    public int? SelectOneInt(string aSql) {
  //      var xQry = Connection.CreateCommand();
  //      xQry.CommandText = aSql;
  //      return (int)xQry.ExecuteScalar();
  //    }

  //    public void Exec(string aSql) {
  //      var xQry = Connection.CreateCommand();
  //      xQry.CommandText = aSql;
  //      xQry.ExecuteNonQuery();
  //    }

  //    public void MakeUniqueInt(string aTable, string aCol, bool aAllowNulls) {
  //      string xIdxName = "Uq_" + aTable + "_" + aCol;
  //      if (aAllowNulls) {
  //        //http://sqlservercodebook.blogspot.com/2008/04/multiple-null-values-in-unique-index-in.html
  //        Exec("ALTER TABLE " + aTable + " ADD " + xIdxName + " AS (CASE WHEN " + aCol + " IS NULL THEN Id * -1 ELSE " + aCol + " END);");
  //        // We create index seperately instead of using unique keyword on previous SQL
  //        // so we can control name of the index for better identification
  //        Exec("CREATE UNIQUE INDEX Idx" + xIdxName + " ON " + aTable + "(" + xIdxName + ");");
  //      } else {
  //        Exec("CREATE UNIQUE INDEX Idx" + xIdxName + " ON " + aTable + "(" + aCol + ");");
  //      }
  //    }

  //    public void MakeIndex(string aTable, string aCol) {
  //      Exec("CREATE INDEX Idx_" + aTable + "_" + aCol + " ON " + aTable + "(" + aCol + ");");
  //    }

  //    public void MakeUniqueString(string aTable, string aCol, bool aAllowNulls) {
  //      string xIdxName = "Uq_" + aTable + "_" + aCol;
  //      if (aAllowNulls) {
  //        Exec("ALTER TABLE " + aTable + " ADD " + xIdxName + " AS (CASE WHEN " + aCol + " IS NULL THEN 'key-' + CAST([Id] as varchar(10)) ELSE UPPER(RTRIM(LTRIM(" + aCol + "))) END);");
  //        Exec("CREATE UNIQUE INDEX Idx" + xIdxName + " ON " + aTable + "(" + xIdxName + ");");
  //      } else {
  //        Exec("CREATE UNIQUE INDEX Idx" + xIdxName + " ON " + aTable + "(" + aCol + ");");
  //      }
  //    }

  //  }
  }
}