Open Source Extensible Enterprise n-tier Application Framework with Multilayered Architecture

using System;
using System.Data;
using System.Data.Common;
using SiberTek.Xenta.Data.Entities;
using SiberTek.Xenta.Data.Entities.Collections;
using SiberTek.Xenta.Data.Utils;
using SiberTek.Xenta.Enums;

namespace SiberTek.Xenta.Data.Providers
{
    public class PollDataProvider : DataProviderBase, IPollDataProvider
    {
        #region Methods
        public bool InsertPoll(int languageID, string title, DateTime startDate, DateTime endDate, bool isActive, DateTime createdOn, DateTime updatedOn, out int pollID)
        {
            bool res = false;
            pollID = 0;

            using(DbCommand cmd = DataBase.GetStoredProcCommand("Polls_Insert"))
            {
                DbCommandHelper.AddInt32(DataBase, cmd, "LanguageID", languageID);
                DbCommandHelper.AddString(DataBase, cmd, "Title", title);
                DbCommandHelper.AddDateTime(DataBase, cmd, "StartDate", startDate);
                DbCommandHelper.AddDateTime(DataBase, cmd, "EndDate", endDate);
                DbCommandHelper.AddBoolean(DataBase, cmd, "IsActive", isActive);
                DbCommandHelper.AddDateTime(DataBase, cmd, "CreatedOn", createdOn);
                DbCommandHelper.AddDateTime(DataBase, cmd, "UpdatedOn", updatedOn);
                DbCommandHelper.AddOutInt32(DataBase, cmd, "PollID");

                res = (DataBase.ExecuteNonQuery(cmd) > 0);

                if(res)
                {
                    pollID = DbCommandHelper.GeInt32(DataBase, cmd, "@PollID");
                }
            }

            return res;
        }

        public PollData GetPoll(int pollID)
        {
            PollData data = null;

            if(pollID > 0)
            {
                using(DbCommand cmd = DataBase.GetStoredProcCommand("Polls_Select"))
                {
                    DbCommandHelper.AddInt32(DataBase, cmd, "PollID", pollID);

                    using(IDataReader reader = DataBase.ExecuteReader(cmd))
                    {
                        if(reader.Read())
                        {
                            data = ReadData(reader);
                        }
                    }
                }
            }

            return data;
        }

        public PollDataCollection GetAllPolls(int? languageID, DateTime? startDate, DateTime? endDate, DateTime? createdOnStart, DateTime? createdOnEnd, bool showHidden)
        {
            PollDataCollection dataCollection = new PollDataCollection();

            using(DbCommand cmd = DataBase.GetStoredProcCommand("Polls_SelectAll"))
            {
                if(languageID.HasValue)
                {
                    DbCommandHelper.AddInt32(DataBase, cmd, "LanguageID", languageID.Value);
                }
                if(startDate.HasValue)
                {
                    DbCommandHelper.AddDateTime(DataBase, cmd, "StartDate", startDate.Value);
                }
                if(endDate.HasValue)
                {
                    DbCommandHelper.AddDateTime(DataBase, cmd, "EndDate", endDate.Value);
                }
                if(createdOnStart.HasValue)
                {
                    DbCommandHelper.AddDateTime(DataBase, cmd, "CreatedOnStart", createdOnStart.Value);
                }
                if(createdOnEnd.HasValue)
                {
                    DbCommandHelper.AddDateTime(DataBase, cmd, "CreatedOnEnd", createdOnEnd.Value);
                }
                DbCommandHelper.AddBoolean(DataBase, cmd, "ShowHidden", showHidden);

                using(IDataReader reader = DataBase.ExecuteReader(cmd))
                {
                    while(reader.Read())
                    {
                        dataCollection.Add(ReadData(reader));
                    }
                }
            }

            return dataCollection;
        }

        public bool UpdatePoll(int pollID, int languageID, string title, DateTime startDate, DateTime endDate, bool isActive, DateTime createdOn, DateTime updatedOn)
        {
            bool res = false;

            if(pollID > 0)
            {
                using(DbCommand cmd = DataBase.GetStoredProcCommand("Polls_Update"))
                {
                    DbCommandHelper.AddInt32(DataBase, cmd, "PollID", pollID);
                    DbCommandHelper.AddInt32(DataBase, cmd, "LanguageID", languageID);
                    DbCommandHelper.AddString(DataBase, cmd, "Title", title);
                    DbCommandHelper.AddDateTime(DataBase, cmd, "StartDate", startDate);
                    DbCommandHelper.AddDateTime(DataBase, cmd, "EndDate", endDate);
                    DbCommandHelper.AddBoolean(DataBase, cmd, "IsActive", isActive);
                    DbCommandHelper.AddDateTime(DataBase, cmd, "CreatedOn", createdOn);
                    DbCommandHelper.AddDateTime(DataBase, cmd, "UpdatedOn", updatedOn);

                    res = (DataBase.ExecuteNonQuery(cmd) > 0);
                }
            }

            return res;
        }

        public bool DeletePoll(int pollID)
        {
            bool res = false;

            if(pollID > 0)
            {
                using(DbCommand cmd = DataBase.GetStoredProcCommand("Polls_Delete"))
                {
                    DbCommandHelper.AddInt32(DataBase, cmd, "PollID", pollID);

                    res = (DataBase.ExecuteNonQuery(cmd) > 0);
                }
            }

            return res;
        }
        #endregion

        #region Utilities
        private static PollData ReadData(IDataReader reader)
        {
            PollData data = new PollData();

            data.PollID = DataReaderHelper.ReadInt32(reader, "PollID");
            data.LanguageID = DataReaderHelper.ReadInt32(reader, "LanguageID");
            data.Title = DataReaderHelper.ReadString(reader, "Title");
            data.StartDate = DataReaderHelper.ReadDateTime(reader, "StartDate");
            data.EndDate = DataReaderHelper.ReadDateTime(reader, "EndDate");
            data.IsActive = DataReaderHelper.ReadBoolean(reader, "IsActive");
            data.CreatedOn = DataReaderHelper.ReadDateTime(reader, "CreatedOn");
            data.UpdatedOn = DataReaderHelper.ReadDateTime(reader, "UpdatedOn");

            return data;
        }
        #endregion
    }
}