// ========================================================================
// Copyright 2007 - Volian Enterprises, Inc. All rights reserved.          
// Volian Enterprises - Proprietary Information - DO NOT COPY OR DISTRIBUTE
// ------------------------------------------------------------------------
// $Workfile: $     $Revision: $                                           
// $Author: $   $Date: $                                                   
//                                                                         
// $History: $                                                             
// ========================================================================

using System;
using System.Data;
using System.Data.SqlClient;
using Csla;
using Csla.Data;
using System.Configuration;
using System.IO;
using System.ComponentModel;
using System.Collections.Generic;
using Csla.Validation;
namespace VEPROMS.CSLA.Library
{
    /// <summary>
    ///	Image Generated by MyGeneration using the CSLA Object Mapping template
    /// </summary>
    [Serializable()]
    [TypeConverter(typeof(ImageConverter))]
    public partial class Image : BusinessBase<Image>, IDisposable, IVEHasBrokenRules
    {
        #region Log4Net
        private static readonly log4net.ILog _MyLog = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
        #endregion
        #region Refresh
        private List<Image> _RefreshImages = new List<Image>();
        private void AddToRefreshList(List<Image> refreshImages)
        {
            if (IsDirty)
                refreshImages.Add(this);
        }
        private void ClearRefreshList()
        {
            _RefreshImages = new List<Image>();
        }
        private void BuildRefreshList()
        {
            ClearRefreshList();
            AddToRefreshList(_RefreshImages);
        }
        private void ProcessRefreshList()
        {
            foreach (Image tmp in _RefreshImages)
            {
                ImageInfo.Refresh(tmp);
            }
            ClearRefreshList();
        }
        #endregion
        #region Collection
        private static List<Image> _CacheList = new List<Image>();
        protected static void AddToCache(Image image)
        {
            // B2021-147 commented out to fix out of memory bug
            //if (!_CacheList.Contains(image)) _CacheList.Add(image); // In AddToCache
        }
        protected static void RemoveFromCache(Image image)
        {
            while (_CacheList.Contains(image)) _CacheList.Remove(image); // In RemoveFromCache
        }
        private static Dictionary<string, List<Image>> _CacheByPrimaryKey = new Dictionary<string, List<Image>>();
        private static void ConvertListToDictionary()
        {
            while (_CacheList.Count > 0) // Move Image(s) from temporary _CacheList to _CacheByPrimaryKey
            {
                Image tmp = _CacheList[0]; // Get the first Image
                string pKey = tmp.ContentID.ToString();
                if (!_CacheByPrimaryKey.ContainsKey(pKey))
                {
                    _CacheByPrimaryKey[pKey] = new List<Image>(); // Add new list for PrimaryKey
                }
                _CacheByPrimaryKey[pKey].Add(tmp); // Add to Primary Key list
                _CacheList.RemoveAt(0); // Remove the first Image
            }
        }
        protected static Image GetCachedByPrimaryKey(int contentID)
        {
            ConvertListToDictionary();
            string key = contentID.ToString();
            if (_CacheByPrimaryKey.ContainsKey(key)) return _CacheByPrimaryKey[key][0];
            return null;
        }
        #endregion
        #region Business Methods
        private string _ErrorMessage = string.Empty;
        public string ErrorMessage
        {
            get { return _ErrorMessage; }
        }
        private int _ContentID;
        [System.ComponentModel.DataObjectField(true, true)]
        public int ContentID
        {
            [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)]
            get
            {
                if (_MyContent != null) _ContentID = _MyContent.ContentID;
                return _ContentID;
            }
        }
        private Content _MyContent;
        [System.ComponentModel.DataObjectField(true, true)]
        public Content MyContent
        {
            [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)]
            get
            {
                if (_MyContent == null && _ContentID != 0) _MyContent = Content.Get(_ContentID);
                return _MyContent;
            }
        }
        private int _ImageType;
        /// <summary>
        /// 1 - Figure, 2 - Video, 3 - Audio
        /// </summary>
        public int ImageType
        {
            [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)]
            get
            {
                return _ImageType;
            }
            [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)]
            set
            {
                if (_ImageType != value)
                {
                    _ImageType = value;
                    PropertyHasChanged();
                }
            }
        }
        private string _FileName = string.Empty;
        public string FileName
        {
            [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)]
            get
            {
                return _FileName;
            }
            [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)]
            set
            {
                if (value == null) value = string.Empty;
                if (_FileName != value)
                {
                    _FileName = value;
                    PropertyHasChanged();
                }
            }
        }
        private byte[] _Data;
        public byte[] Data
        {
            [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)]
            get
            {
                return _Data;
            }
            [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)]
            set
            {
                if (_Data != value)
                {
                    _Data = value;
                    PropertyHasChanged();
                }
            }
        }
        private string _Config = string.Empty;
        public string Config
        {
            [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)]
            get
            {
                return _Config;
            }
            [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)]
            set
            {
                if (value == null) value = string.Empty;
                if (_Config != value)
                {
                    _Config = value;
                    PropertyHasChanged();
                }
            }
        }
        private DateTime _DTS = new DateTime();
        public DateTime DTS
        {
            [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)]
            get
            {
                return _DTS;
            }
            [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)]
            set
            {
                if (_DTS != value)
                {
                    _DTS = value;
                    PropertyHasChanged();
                }
            }
        }
        private string _UserID = string.Empty;
        public string UserID
        {
            [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)]
            get
            {
                return _UserID;
            }
            [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)]
            set
            {
                if (value == null) value = string.Empty;
                if (_UserID != value)
                {
                    _UserID = value;
                    PropertyHasChanged();
                }
            }
        }
        private byte[] _LastChanged = new byte[8];//timestamp
        public override bool IsDirty
        {
            get { return base.IsDirty; }
        }
        public bool IsDirtyList(List<object> list)
        {
            return base.IsDirty;
        }
        public override bool IsValid
        {
            get { return (IsNew && !IsDirty) ? true : base.IsValid; }
        }
        public bool IsValidList(List<object> list)
        {
            return (IsNew && !IsDirty) ? true : base.IsValid;
        }
        // CSLATODO: Replace base Image.ToString function as necessary
        /// <summary>
        /// Overrides Base ToString
        /// </summary>
        /// <returns>A string representation of current Image</returns>
        //public override string ToString()
        //{
        //  return base.ToString();
        //}
        // CSLATODO: Check Image.GetIdValue to assure that the ID returned is unique
        /// <summary>
        /// Overrides Base GetIdValue - Used internally by CSLA to determine equality
        /// </summary>
        /// <returns>A Unique ID for the current Image</returns>
        protected override object GetIdValue()
        {
            return MyImageUnique; // Absolutely Unique ID
        }
        #endregion
        #region ValidationRules
        [NonSerialized]
        private bool _CheckingBrokenRules = false;
        public IVEHasBrokenRules HasBrokenRules
        {
            get
            {
                if (_CheckingBrokenRules) return null;
                if ((IsDirty || !IsNew) && BrokenRulesCollection.Count > 0) return this;
                try
                {
                    _CheckingBrokenRules = true;
                    IVEHasBrokenRules hasBrokenRules = null;
                    return hasBrokenRules;
                }
                finally
                {
                    _CheckingBrokenRules = false;
                }
            }
        }
        public BrokenRulesCollection BrokenRules
        {
            get
            {
                IVEHasBrokenRules hasBrokenRules = HasBrokenRules;
                if (this.Equals(hasBrokenRules)) return BrokenRulesCollection;
                return (hasBrokenRules != null ? hasBrokenRules.BrokenRules : null);
            }
        }
        protected override void AddBusinessRules()
        {
            ValidationRules.AddRule(
                Csla.Validation.CommonRules.StringRequired, "FileName");
            ValidationRules.AddRule(
                Csla.Validation.CommonRules.StringMaxLength,
                new Csla.Validation.CommonRules.MaxLengthRuleArgs("FileName", 255));
            ValidationRules.AddRule(
                Csla.Validation.CommonRules.StringMaxLength,
                new Csla.Validation.CommonRules.MaxLengthRuleArgs("Config", 1073741823));
            ValidationRules.AddRule(
                Csla.Validation.CommonRules.StringRequired, "UserID");
            ValidationRules.AddRule(
                Csla.Validation.CommonRules.StringMaxLength,
                new Csla.Validation.CommonRules.MaxLengthRuleArgs("UserID", 100));
            //ValidationRules.AddDependantProperty("x", "y");
            _ImageExtension.AddValidationRules(ValidationRules);
            // CSLATODO:  Add other validation rules
        }
        protected override void AddInstanceBusinessRules()
        {
            _ImageExtension.AddInstanceValidationRules(ValidationRules);
            // CSLATODO:  Add other validation rules
        }
        // Sample data comparison validation rule
        //private bool StartDateGTEndDate(object target, Csla.Validation.RuleArgs e)
        //{
        //	if (_started > _ended)
        //	{
        //		e.Description = "Start date can't be after end date";
        //		return false;
        //	}
        //	else
        //		return true;
        //}
        #endregion
        #region Authorization Rules
        protected override void AddAuthorizationRules()
        {
            //CSLATODO: Who can read/write which fields
            //AuthorizationRules.AllowRead(ContentID, "<Role(s)>");
            //AuthorizationRules.AllowRead(ImageType, "<Role(s)>");
            //AuthorizationRules.AllowRead(FileName, "<Role(s)>");
            //AuthorizationRules.AllowRead(Data, "<Role(s)>");
            //AuthorizationRules.AllowRead(Config, "<Role(s)>");
            //AuthorizationRules.AllowRead(DTS, "<Role(s)>");
            //AuthorizationRules.AllowRead(UserID, "<Role(s)>");
            //AuthorizationRules.AllowWrite(ImageType, "<Role(s)>");
            //AuthorizationRules.AllowWrite(FileName, "<Role(s)>");
            //AuthorizationRules.AllowWrite(Data, "<Role(s)>");
            //AuthorizationRules.AllowWrite(Config, "<Role(s)>");
            //AuthorizationRules.AllowWrite(DTS, "<Role(s)>");
            //AuthorizationRules.AllowWrite(UserID, "<Role(s)>");
            _ImageExtension.AddAuthorizationRules(AuthorizationRules);
        }
        protected override void AddInstanceAuthorizationRules()
        {
            //CSLATODO: Who can read/write which fields
            _ImageExtension.AddInstanceAuthorizationRules(AuthorizationRules);
        }
        public static bool CanAddObject()
        {
            // CSLATODO: Can Add Authorization
            //return Csla.ApplicationContext.User.IsInRole("ProjectManager");
            return true;
        }
        public static bool CanGetObject()
        {
            // CSLATODO: CanGet Authorization
            return true;
        }
        public static bool CanDeleteObject()
        {
            // CSLATODO: CanDelete Authorization
            //bool result = false;
            //if (Csla.ApplicationContext.User.IsInRole("ProjectManager"))result = true;
            //if (Csla.ApplicationContext.User.IsInRole("Administrator"))result = true;
            //return result;
            return true;
        }
        public static bool CanEditObject()
        {
            // CSLATODO: CanEdit Authorization
            //return Csla.ApplicationContext.User.IsInRole("ProjectManager");
            return true;
        }
        #endregion
        #region Factory Methods
        public int CurrentEditLevel
        { get { return EditLevel; } }
        private static int _ImageUnique = 0;
        protected static int ImageUnique
        { get { return ++_ImageUnique; } }
        private int _MyImageUnique = ImageUnique;
        public int MyImageUnique // Absolutely Unique ID - Editable
        { get { return _MyImageUnique; } }
        protected Image()
        {/* require use of factory methods */
            AddToCache(this);
        }
        private bool _Disposed = false;
        private static int _CountCreated = 0;
        private static int _CountDisposed = 0;
        private static int _CountFinalized = 0;
        private static int IncrementCountCreated
        { get { return ++_CountCreated; } }
        private int _CountWhenCreated = IncrementCountCreated;
        public static int CountCreated
        { get { return _CountCreated; } }
        public static int CountNotDisposed
        { get { return _CountCreated - _CountDisposed; } }
        public static int CountNotFinalized
        { get { return _CountCreated - _CountFinalized; } }
        ~Image()
        {
            _CountFinalized++;
        }
        public void Dispose()
        {
            if (_Disposed) return;
            _CountDisposed++;
            _Disposed = true;
            RemoveFromDictionaries();
        }
        private void RemoveFromDictionaries()
        {
            RemoveFromCache(this);
            if (_CacheByPrimaryKey.ContainsKey(ContentID.ToString()))
            {
                List<Image> listImage = _CacheByPrimaryKey[ContentID.ToString()]; // Get the list of items
                while (listImage.Contains(this)) listImage.Remove(this); // Remove the item from the list
                if (listImage.Count == 0) //If there are no items left in the list
                    _CacheByPrimaryKey.Remove(ContentID.ToString()); // remove the list
            }
        }
        public static Image New()
        {
            if (!CanAddObject())
                throw new System.Security.SecurityException("User not authorized to add a Image");
            try
            {
                return DataPortal.Create<Image>();
            }
            catch (Exception ex)
            {
                throw new DbCslaException("Error on Image.New", ex);
            }
        }
        public static Image New(Content myContent, string fileName, byte[] data)
        {
            Image tmp = Image.New();
            tmp._MyContent = myContent;
            tmp.FileName = fileName;
            tmp.Data = data;
            return tmp;
        }
        public static Image New(Content myContent, int imageType, string fileName, byte[] data, string config, DateTime dts, string userID)
        {
            Image tmp = Image.New();
            tmp._MyContent = myContent;
            tmp.ImageType = imageType;
            tmp.FileName = fileName;
            tmp.Data = data;
            tmp.Config = config;
            tmp.DTS = dts;
            tmp.UserID = userID;
            return tmp;
        }
        public static Image MakeImage(Content myContent, int imageType, string fileName, byte[] data, string config, DateTime dts, string userID)
        {
            Image tmp = Image.New(myContent, imageType, fileName, data, config, dts, userID);
            if (tmp.IsSavable)
                tmp = tmp.Save();
            else
            {
                Csla.Validation.BrokenRulesCollection brc = tmp.ValidationRules.GetBrokenRules();
                tmp._ErrorMessage = "Failed Validation:";
                foreach (Csla.Validation.BrokenRule br in brc)
                {
                    tmp._ErrorMessage += "\r\n\tFailure: " + br.RuleName;
                }
            }
            return tmp;
        }
        public static Image New(Content myContent, string fileName, byte[] data, string config)
        {
            Image tmp = Image.New();
            tmp._MyContent = myContent;
            tmp.FileName = fileName;
            tmp.Data = data;
            tmp.Config = config;
            return tmp;
        }
        public static Image MakeImage(Content myContent, string fileName, byte[] data, string config)
        {
            Image tmp = Image.New(myContent, fileName, data, config);
            if (tmp.IsSavable)
                tmp = tmp.Save();
            else
            {
                Csla.Validation.BrokenRulesCollection brc = tmp.ValidationRules.GetBrokenRules();
                tmp._ErrorMessage = "Failed Validation:";
                foreach (Csla.Validation.BrokenRule br in brc)
                {
                    tmp._ErrorMessage += "\r\n\tFailure: " + br.RuleName;
                }
            }
            return tmp;
        }
        public static Image New(Content myContent)
        {
            Image tmp = Image.New();
            tmp._MyContent = myContent;
            tmp.MarkClean();
            tmp.MarkAsChild();
            return tmp;
        }
        public static Image Get(int contentID)
        {
            if (!CanGetObject())
                throw new System.Security.SecurityException("User not authorized to view a Image");
            try
            {
                Image tmp = GetCachedByPrimaryKey(contentID);
                if (tmp == null)
                {
                    tmp = DataPortal.Fetch<Image>(new PKCriteria(contentID));
                    AddToCache(tmp);
                }
                if (tmp.ErrorMessage == "No Record Found")
                {
                    tmp.Dispose(); // Clean-up Image
                    tmp = null;
                }
                return tmp;
            }
            catch (Exception ex)
            {
                throw new DbCslaException("Error on Image.Get", ex);
            }
        }
        public static Image Get(SafeDataReader dr)
        {
            if (dr.Read()) return new Image(dr);
            return null;
        }
        internal Image(SafeDataReader dr)
        {
            ReadData(dr);
        }
        public static void Delete(int contentID)
        {
            if (!CanDeleteObject())
                throw new System.Security.SecurityException("User not authorized to remove a Image");
            try
            {
                DataPortal.Delete(new PKCriteria(contentID));
            }
            catch (Exception ex)
            {
                throw new DbCslaException("Error on Image.Delete", ex);
            }
        }
        public override Image Save()
        {
            if (IsDeleted && !CanDeleteObject())
                throw new System.Security.SecurityException("User not authorized to remove a Image");
            else if (IsNew && !CanAddObject())
                throw new System.Security.SecurityException("User not authorized to add a Image");
            else if (!CanEditObject())
                throw new System.Security.SecurityException("User not authorized to update a Image");
            try
            {
                BuildRefreshList();
                Image image = base.Save();
                RemoveFromDictionaries(); // if save is successful remove the previous Folder from the cache
                AddToCache(image);//Refresh the item in AllList
                ProcessRefreshList();
                return image;
            }
            catch (Exception ex)
            {
                throw new DbCslaException("Error on CSLA Save", ex);
            }
        }
        #endregion
        #region Data Access Portal
        [Serializable()]
        protected class PKCriteria
        {
            private int _ContentID;
            public int ContentID
            { get { return _ContentID; } }
            public PKCriteria(int contentID)
            {
                _ContentID = contentID;
            }
        }
        // CSLATODO: If Create needs to access DB - It should not be marked RunLocal
        [RunLocal()]
        private new void DataPortal_Create()
        {

            // Database Defaults
            _ImageType = _ImageExtension.DefaultImageType;
            _DTS = _ImageExtension.DefaultDTS;
            _UserID = _ImageExtension.DefaultUserID;
            // CSLATODO: Add any defaults that are necessary
            ValidationRules.CheckRules();
        }
        private void ReadData(SafeDataReader dr)
        {
            if (_MyLog.IsDebugEnabled) _MyLog.DebugFormat("[{0}] Image.ReadData", GetHashCode());
            try
            {
                _ContentID = dr.GetInt32("ContentID");
                _ImageType = dr.GetInt32("ImageType");
                _FileName = dr.GetString("FileName");
                _Data = (byte[])dr.GetValue("Data");
                _Config = dr.GetString("Config");
                _DTS = dr.GetDateTime("DTS");
                _UserID = dr.GetString("UserID");
                dr.GetBytes("LastChanged", 0, _LastChanged, 0, 8);
                MarkOld();
            }
            catch (Exception ex)
            {
                if (_MyLog.IsErrorEnabled) _MyLog.Error("Image.ReadData", ex);
                _ErrorMessage = ex.Message;
                throw new DbCslaException("Image.ReadData", ex);
            }
        }
        private void DataPortal_Fetch(PKCriteria criteria)
        {
            if (_MyLog.IsDebugEnabled) _MyLog.DebugFormat("[{0}] Image.DataPortal_Fetch", GetHashCode());
            try
            {
                using (SqlConnection cn = Database.VEPROMS_SqlConnection)
                {
                    ApplicationContext.LocalContext["cn"] = cn;
                    using (SqlCommand cm = cn.CreateCommand())
                    {
                        cm.CommandType = CommandType.StoredProcedure;
                        cm.CommandText = "getImage";
                        cm.Parameters.AddWithValue("@ContentID", criteria.ContentID);
                        cm.CommandTimeout = Database.DefaultTimeout;
                        using (SafeDataReader dr = new SafeDataReader(cm.ExecuteReader()))
                        {
                            if (!dr.Read())
                            {
                                _ErrorMessage = "No Record Found";
                                return;
                            }
                            ReadData(dr);
                        }
                    }
                    // removing of item only needed for local data portal
                    if (ApplicationContext.ExecutionLocation == ApplicationContext.ExecutionLocations.Client)
                        ApplicationContext.LocalContext.Remove("cn");
                }
            }
            catch (Exception ex)
            {
                if (_MyLog.IsErrorEnabled) _MyLog.Error("Image.DataPortal_Fetch", ex);
                _ErrorMessage = ex.Message;
                throw new DbCslaException("Image.DataPortal_Fetch", ex);
            }
        }
        [Transactional(TransactionalTypes.TransactionScope)]
        protected override void DataPortal_Insert()
        {
            try
            {
                using (SqlConnection cn = Database.VEPROMS_SqlConnection)
                {
                    ApplicationContext.LocalContext["cn"] = cn;
                    SQLInsert();
                    // removing of item only needed for local data portal
                    if (ApplicationContext.ExecutionLocation == ApplicationContext.ExecutionLocations.Client)
                        ApplicationContext.LocalContext.Remove("cn");
                }
            }
            catch (Exception ex)
            {
                if (_MyLog.IsErrorEnabled) _MyLog.Error("Image.DataPortal_Insert", ex);
                _ErrorMessage = ex.Message;
                throw new DbCslaException("Image.DataPortal_Insert", ex);
            }
            finally
            {
                if (_MyLog.IsDebugEnabled) _MyLog.DebugFormat("[{0}] Image.DataPortal_Insert", GetHashCode());
            }
        }
        [Transactional(TransactionalTypes.TransactionScope)]
        internal void SQLInsert()
        {
            if (!this.IsDirty) return;
            try
            {
                SqlConnection cn = (SqlConnection)ApplicationContext.LocalContext["cn"];
                using (SqlCommand cm = cn.CreateCommand())
                {
                    cm.CommandType = CommandType.StoredProcedure;
                    cm.CommandTimeout = Database.SQLTimeout;
                    cm.CommandText = "addImage";
                    // Input All Fields - Except Calculated Columns
                    cm.Parameters.AddWithValue("@ContentID", ContentID);
                    cm.Parameters.AddWithValue("@ImageType", _ImageType);
                    cm.Parameters.AddWithValue("@FileName", _FileName);
                    cm.Parameters.AddWithValue("@Data", _Data);
                    cm.Parameters.AddWithValue("@Config", _Config);
                    if (_DTS.Year >= 1753 && _DTS.Year <= 9999) cm.Parameters.AddWithValue("@DTS", _DTS);
                    cm.Parameters.AddWithValue("@UserID", _UserID);
                    // Output Calculated Columns
                    SqlParameter param_LastChanged = new SqlParameter("@newLastChanged", SqlDbType.Timestamp);
                    param_LastChanged.Direction = ParameterDirection.Output;
                    cm.Parameters.Add(param_LastChanged);
                    // CSLATODO: Define any additional output parameters
                    cm.ExecuteNonQuery();
                    // Save all values being returned from the Procedure
                    _LastChanged = (byte[])cm.Parameters["@newLastChanged"].Value;
                }
                MarkOld();
                // update child objects
                if (_MyLog.IsDebugEnabled) _MyLog.DebugFormat("[{0}] Image.SQLInsert", GetHashCode());
            }
            catch (Exception ex)
            {
                if (_MyLog.IsErrorEnabled) _MyLog.Error("Image.SQLInsert", ex);
                _ErrorMessage = ex.Message;
                throw new DbCslaException("Image.SQLInsert", ex);
            }
        }
        [Transactional(TransactionalTypes.TransactionScope)]
        public static byte[] Add(SqlConnection cn, Content myContent, int imageType, string fileName, byte[] data, string config, DateTime dts, string userID)
        {
            if (_MyLog.IsDebugEnabled) _MyLog.DebugFormat("[{0}] Image.Add", 0);
            try
            {
                using (SqlCommand cm = cn.CreateCommand())
                {
                    cm.CommandType = CommandType.StoredProcedure;
                    cm.CommandTimeout = Database.SQLTimeout;
                    cm.CommandText = "addImage";
                    // Input All Fields - Except Calculated Columns
                    cm.Parameters.AddWithValue("@ContentID", myContent.ContentID);
                    cm.Parameters.AddWithValue("@ImageType", imageType);
                    cm.Parameters.AddWithValue("@FileName", fileName);
                    cm.Parameters.AddWithValue("@Data", data);
                    cm.Parameters.AddWithValue("@Config", config);
                    if (dts.Year >= 1753 && dts.Year <= 9999) cm.Parameters.AddWithValue("@DTS", dts);
                    cm.Parameters.AddWithValue("@UserID", userID);
                    // Output Calculated Columns
                    SqlParameter param_LastChanged = new SqlParameter("@newLastChanged", SqlDbType.Timestamp);
                    param_LastChanged.Direction = ParameterDirection.Output;
                    cm.Parameters.Add(param_LastChanged);
                    // CSLATODO: Define any additional output parameters
                    cm.ExecuteNonQuery();
                    // Save all values being returned from the Procedure
                    return (byte[])cm.Parameters["@newLastChanged"].Value;
                }
            }
            catch (Exception ex)
            {
                if (_MyLog.IsErrorEnabled) _MyLog.Error("Image.Add", ex);
                throw new DbCslaException("Image.Add", ex);
            }
        }
        [Transactional(TransactionalTypes.TransactionScope)]
        protected override void DataPortal_Update()
        {
            if (!IsDirty) return;   // If not dirty - nothing to do
            if (_MyLog.IsDebugEnabled) _MyLog.DebugFormat("[{0}] Image.DataPortal_Update", GetHashCode());
            try
            {
                using (SqlConnection cn = Database.VEPROMS_SqlConnection)
                {
                    ApplicationContext.LocalContext["cn"] = cn;
                    SQLUpdate();
                    // removing of item only needed for local data portal
                    if (ApplicationContext.ExecutionLocation == ApplicationContext.ExecutionLocations.Client)
                        ApplicationContext.LocalContext.Remove("cn");
                }
            }
            catch (Exception ex)
            {
                if (_MyLog.IsErrorEnabled) _MyLog.Error("Image.DataPortal_Update", ex);
                _ErrorMessage = ex.Message;
                if (!ex.Message.EndsWith("has been edited by another user.")) throw ex;
            }
        }
        [Transactional(TransactionalTypes.TransactionScope)]
        internal void SQLUpdate()
        {
            if (!IsDirty) return;   // If not dirty - nothing to do
            if (_MyLog.IsDebugEnabled) _MyLog.DebugFormat("[{0}] Image.SQLUpdate", GetHashCode());
            try
            {
                SqlConnection cn = (SqlConnection)ApplicationContext.LocalContext["cn"];
                if (base.IsDirty)
                {
                    using (SqlCommand cm = cn.CreateCommand())
                    {
                        cm.CommandType = CommandType.StoredProcedure;
                        cm.CommandTimeout = Database.SQLTimeout;
                        cm.CommandText = "updateImage";
                        // All Fields including Calculated Fields
                        cm.Parameters.AddWithValue("@ContentID", ContentID);
                        cm.Parameters.AddWithValue("@ImageType", _ImageType);
                        cm.Parameters.AddWithValue("@FileName", _FileName);
                        cm.Parameters.AddWithValue("@Data", _Data);
                        cm.Parameters.AddWithValue("@Config", _Config);
                        if (_DTS.Year >= 1753 && _DTS.Year <= 9999) cm.Parameters.AddWithValue("@DTS", _DTS);
                        cm.Parameters.AddWithValue("@UserID", _UserID);
                        cm.Parameters.AddWithValue("@LastChanged", _LastChanged);
                        // Output Calculated Columns
                        SqlParameter param_LastChanged = new SqlParameter("@newLastChanged", SqlDbType.Timestamp);
                        param_LastChanged.Direction = ParameterDirection.Output;
                        cm.Parameters.Add(param_LastChanged);
                        // CSLATODO: Define any additional output parameters
                        cm.ExecuteNonQuery();
                        // Save all values being returned from the Procedure
                        _LastChanged = (byte[])cm.Parameters["@newLastChanged"].Value;
                    }
                }
                MarkOld();
                // use the open connection to update child objects
            }
            catch (Exception ex)
            {
                if (_MyLog.IsErrorEnabled) _MyLog.Error("Image.SQLUpdate", ex);
                _ErrorMessage = ex.Message;
                if (!ex.Message.EndsWith("has been edited by another user.")) throw ex;
            }
        }
        internal void Update(Content content)
        {
            if (!this.IsDirty) return;
            if (base.IsDirty)
            {
                SqlConnection cn = (SqlConnection)ApplicationContext.LocalContext["cn"];
                if (IsNew)
                    _LastChanged = Image.Add(cn, content, _ImageType, _FileName, _Data, _Config, _DTS, _UserID);
                else
                    _LastChanged = Image.Update(cn, content.ContentID, _ImageType, _FileName, _Data, _Config, _DTS, _UserID, ref _LastChanged);
                MarkOld();
            }
        }
        [Transactional(TransactionalTypes.TransactionScope)]
        public static byte[] Update(SqlConnection cn, int contentID, int imageType, string fileName, byte[] data, string config, DateTime dts, string userID, ref byte[] lastChanged)
        {
            if (_MyLog.IsDebugEnabled) _MyLog.DebugFormat("[{0}] Image.Update", 0);
            try
            {
                using (SqlCommand cm = cn.CreateCommand())
                {
                    cm.CommandType = CommandType.StoredProcedure;
                    cm.CommandTimeout = Database.SQLTimeout;
                    cm.CommandText = "updateImage";
                    // Input All Fields - Except Calculated Columns
                    cm.Parameters.AddWithValue("@ContentID", contentID);
                    cm.Parameters.AddWithValue("@ImageType", imageType);
                    cm.Parameters.AddWithValue("@FileName", fileName);
                    cm.Parameters.AddWithValue("@Data", data);
                    cm.Parameters.AddWithValue("@Config", config);
                    if (dts.Year >= 1753 && dts.Year <= 9999) cm.Parameters.AddWithValue("@DTS", dts);
                    cm.Parameters.AddWithValue("@UserID", userID);
                    cm.Parameters.AddWithValue("@LastChanged", lastChanged);
                    // Output Calculated Columns
                    SqlParameter param_LastChanged = new SqlParameter("@newLastChanged", SqlDbType.Timestamp);
                    param_LastChanged.Direction = ParameterDirection.Output;
                    cm.Parameters.Add(param_LastChanged);
                    // CSLATODO: Define any additional output parameters
                    cm.ExecuteNonQuery();
                    // Save all values being returned from the Procedure
                    return (byte[])cm.Parameters["@newLastChanged"].Value;
                }
            }
            catch (Exception ex)
            {
                if (_MyLog.IsErrorEnabled) _MyLog.Error("Image.Update", ex);
                throw new DbCslaException("Image.Update", ex);
            }
        }
        [Transactional(TransactionalTypes.TransactionScope)]
        protected override void DataPortal_DeleteSelf()
        {
            DataPortal_Delete(new PKCriteria(_ContentID));
        }
        [Transactional(TransactionalTypes.TransactionScope)]
        private void DataPortal_Delete(PKCriteria criteria)
        {
            if (_MyLog.IsDebugEnabled) _MyLog.DebugFormat("[{0}] Image.DataPortal_Delete", GetHashCode());
            try
            {
                using (SqlConnection cn = Database.VEPROMS_SqlConnection)
                {
                    using (SqlCommand cm = cn.CreateCommand())
                    {
                        cm.CommandType = CommandType.StoredProcedure;
                        cm.CommandTimeout = Database.SQLTimeout;
                        cm.CommandText = "deleteImage";
                        cm.Parameters.AddWithValue("@ContentID", criteria.ContentID);
                        cm.ExecuteNonQuery();
                    }
                }
            }
            catch (Exception ex)
            {
                if (_MyLog.IsErrorEnabled) _MyLog.Error("Image.DataPortal_Delete", ex);
                _ErrorMessage = ex.Message;
                throw new DbCslaException("Image.DataPortal_Delete", ex);
            }
        }
        [Transactional(TransactionalTypes.TransactionScope)]
        public static void Remove(SqlConnection cn, int contentID)
        {
            if (_MyLog.IsDebugEnabled) _MyLog.DebugFormat("[{0}] Image.Remove", 0);
            try
            {
                using (SqlCommand cm = cn.CreateCommand())
                {
                    cm.CommandType = CommandType.StoredProcedure;
                    cm.CommandTimeout = Database.SQLTimeout;
                    cm.CommandText = "deleteImage";
                    // Input PK Fields
                    cm.Parameters.AddWithValue("@ContentID", contentID);
                    // CSLATODO: Define any additional output parameters
                    cm.ExecuteNonQuery();
                }
            }
            catch (Exception ex)
            {
                if (_MyLog.IsErrorEnabled) _MyLog.Error("Image.Remove", ex);
                throw new DbCslaException("Image.Remove", ex);
            }
        }
        #endregion
        #region Exists
        public static bool Exists(int contentID)
        {
            ExistsCommand result;
            try
            {
                result = DataPortal.Execute<ExistsCommand>(new ExistsCommand(contentID));
                return result.Exists;
            }
            catch (Exception ex)
            {
                throw new DbCslaException("Error on Image.Exists", ex);
            }
        }
        [Serializable()]
        private class ExistsCommand : CommandBase
        {
            private int _ContentID;
            private bool _exists;
            public bool Exists
            {
                get { return _exists; }
            }
            public ExistsCommand(int contentID)
            {
                _ContentID = contentID;
            }
            protected override void DataPortal_Execute()
            {
                if (_MyLog.IsDebugEnabled) _MyLog.DebugFormat("[{0}] Image.DataPortal_Execute", GetHashCode());
                try
                {
                    using (SqlConnection cn = Database.VEPROMS_SqlConnection)
                    {
                        cn.Open();
                        using (SqlCommand cm = cn.CreateCommand())
                        {
                            cm.CommandType = CommandType.StoredProcedure;
                            cm.CommandTimeout = Database.SQLTimeout;
                            cm.CommandText = "existsImage";
                            cm.Parameters.AddWithValue("@ContentID", _ContentID);
                            int count = (int)cm.ExecuteScalar();
                            _exists = (count > 0);
                        }
                    }
                }
                catch (Exception ex)
                {
                    if (_MyLog.IsErrorEnabled) _MyLog.Error("Image.DataPortal_Execute", ex);
                    throw new DbCslaException("Image.DataPortal_Execute", ex);
                }
            }
        }
        #endregion
        // Standard Default Code
        #region extension
        ImageExtension _ImageExtension = new ImageExtension();
        [Serializable()]
        partial class ImageExtension : extensionBase
        {
        }
        [Serializable()]
        class extensionBase
        {
            // Default Values
            public virtual int DefaultImageType
            {
                get { return 1; }
            }
            public virtual DateTime DefaultDTS
            {
                get { return DateTime.Now; }
            }
            public virtual string DefaultUserID
            {
                get { return Volian.Base.Library.VlnSettings.UserID; }
            }
            // Authorization Rules
            public virtual void AddAuthorizationRules(Csla.Security.AuthorizationRules rules)
            {
                // Needs to be overriden to add new authorization rules
            }
            // Instance Authorization Rules
            public virtual void AddInstanceAuthorizationRules(Csla.Security.AuthorizationRules rules)
            {
                // Needs to be overriden to add new authorization rules
            }
            // Validation Rules
            public virtual void AddValidationRules(Csla.Validation.ValidationRules rules)
            {
                // Needs to be overriden to add new validation rules
            }
            // InstanceValidation Rules
            public virtual void AddInstanceValidationRules(Csla.Validation.ValidationRules rules)
            {
                // Needs to be overriden to add new validation rules
            }
        }
        #endregion
    } // Class
    #region Converter
    internal class ImageConverter : ExpandableObjectConverter
    {
        public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destType)
        {
            if (destType == typeof(string) && value is Image)
            {
                // Return the ToString value
                return ((Image)value).ToString();
            }
            return base.ConvertTo(context, culture, value, destType);
        }
    }
    #endregion
} // Namespace


//// The following is a sample Extension File.  You can use it to create ImageExt.cs
//using System;
//using System.Collections.Generic;
//using System.Text;
//using Csla;

//namespace VEPROMS.CSLA.Library
//{
//  public partial class Image
//  {
//    partial class ImageExtension : extensionBase
//    {
//      // CSLATODO: Override automatic defaults
//      public virtual int DefaultImageType
//      {
//        get { return 1; }
//      }
//      public virtual DateTime DefaultDTS
//      {
//        get { return DateTime.Now; }
//      }
//      public virtual string DefaultUserID
//      {
//        get { return Environment.UserName.ToUpper(); }
//      }
//      public new void AddAuthorizationRules(Csla.Security.AuthorizationRules rules)
//      {
//        //rules.AllowRead(Dbid, "<Role(s)>");
//      }
//      public new void AddInstanceAuthorizationRules(Csla.Security.AuthorizationRules rules)
//      {
//        //rules.AllowInstanceRead(Dbid, "<Role(s)>");
//      }
//      public new void AddValidationRules(Csla.Validation.ValidationRules rules)
//      {
//        rules.AddRule(
//          Csla.Validation.CommonRules.StringMaxLength,
//          new Csla.Validation.CommonRules.MaxLengthRuleArgs("Name", 100));
//      }
//      public new void AddInstanceValidationRules(Csla.Validation.ValidationRules rules)
//      {
//        rules.AddInstanceRule(/* Instance Validation Rule */);
//      }
//    }
//  }
//}