using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using Kreta.Framework;
using Kreta.Framework.Collections;
using Kreta.Framework.Collections.Generic;
using Kreta.Framework.Entities;
using Kreta.Framework.Entities.Associations;
using Kreta.Framework.Entities.Generic;

namespace SDA.Kreta.Entities
{
    internal sealed class eLearningDBHelper : EntityDBHelper<eLearning>
    {
        private Dictionary<string, string> dynamicColumns = new Dictionary<string, string>()
        {
            { "Befejezett", "T_ELEARNING_OSSZES.C_BEFEJEZETT" },
            { "eLearningAzonosito", "T_ELEARNING_OSSZES.C_ELEARNINGAZONOSITO" },
            { "eLearningFelhasznaloNev", "T_ELEARNING_OSSZES.C_ELEARNINGFELHASZNALONEV" },
            { "Sikeres", "T_ELEARNING_OSSZES.C_SIKERES" },
            { "Szerzodeses", "T_ELEARNING_OSSZES.C_SZERZODESES" },
            { "TananyagKod", "T_ELEARNING_OSSZES.C_TANANYAGKOD" },
        };

        private const string dynamicQueryCommandText =
            "select " +
                "T_ELEARNING_OSSZES.ID, " +
                "{COLUMNS}" +
                // eLearning betöltése
                // eLearning kapcsoló mezői
                "T_ELEARNING_OSSZES.C_FELHASZNALOID, " + /* Kötelező asszociációs kapcsolómező */
                "T_ELEARNING_OSSZES.C_INTEZMENYID, " + /* Kötelező asszociációs kapcsolómező */
                "T_ELEARNING_OSSZES.C_TANEVID, " + /* Kötelező asszociációs kapcsolómező */
                "T_ELEARNING_OSSZES.TOROLT, " +
                "T_ELEARNING_OSSZES.SERIAL, " +
                "T_ELEARNING_OSSZES.CREATED, " +
                "T_ELEARNING_OSSZES.CREATOR, " +
                "T_ELEARNING_OSSZES.LASTCHANGED, " +
                "T_ELEARNING_OSSZES.MODIFIER " +
            "from " +
                "T_ELEARNING_OSSZES " +
            "where " +
                "(1 = 1) ";

        private const string emptyQueryCommandText =
            "select " +
                "T_ELEARNING_OSSZES.ID, " +
                // eLearning betöltése
                // eLearning mezői
                "T_ELEARNING_OSSZES.C_BEFEJEZETT, " +
                "T_ELEARNING_OSSZES.C_ELEARNINGAZONOSITO, " +
                "T_ELEARNING_OSSZES.C_ELEARNINGFELHASZNALONEV, " +
                "T_ELEARNING_OSSZES.C_SIKERES, " +
                "T_ELEARNING_OSSZES.C_SZERZODESES, " +
                "T_ELEARNING_OSSZES.C_TANANYAGKOD, " +
                // eLearning kapcsoló mezői
                "T_ELEARNING_OSSZES.C_FELHASZNALOID, " + /* Kötelező asszociációs kapcsolómező */
                "T_ELEARNING_OSSZES.C_INTEZMENYID, " + /* Kötelező asszociációs kapcsolómező */
                "T_ELEARNING_OSSZES.C_TANEVID, " + /* Kötelező asszociációs kapcsolómező */
                "T_ELEARNING_OSSZES.TOROLT, " +
                "T_ELEARNING_OSSZES.SERIAL, " +
                "T_ELEARNING_OSSZES.CREATED, " +
                "T_ELEARNING_OSSZES.CREATOR, " +
                "T_ELEARNING_OSSZES.LASTCHANGED, " +
                "T_ELEARNING_OSSZES.MODIFIER " +
            "from " +
                "T_ELEARNING_OSSZES " +
            "where " +
                "(1 = 1) ";

        public override string EmptyQueryCommandText
        {
            get
            {
                return emptyQueryCommandText;
            }
        }

        public override string DynamicQueryCommandText
        {
            get
            {
                return dynamicQueryCommandText;
            }
        }

        public override IDictionary<string, string> DynamicColumns
        {
            get
            {
                return dynamicColumns;
            }
        }

        protected override eLearning CreateEntityInstance()
        {
            return eLearning.GiveAnInstance();
        }

        #region Lekérdezés

        public override void LoadEntityFields(eLearning entity, SDA.DataProvider.SDADataReader reader)
        {
            // eLearning betöltése
            // eLearning mezői

            entity.m_Befejezett = DAUtil.ReadBooleanAttribute(reader, 1, false);


            entity.m_eLearningAzonosito = DAUtil.ReadStringAttribute(reader, 2, "");


            entity.m_eLearningFelhasznaloNev = DAUtil.ReadStringAttribute(reader, 3, "");


            entity.m_Sikeres = DAUtil.ReadBooleanAttribute(reader, 4, false);


            entity.m_Szerzodeses = DAUtil.ReadBooleanAttribute(reader, 5, false);


            entity.m_TananyagKod = DAUtil.ReadStringAttribute(reader, 6, "");

            // eLearning kapcsoló mezői
            DAUtil.ReadIDAttribute(reader, 7, ref entity.m_FelhasznaloId, 0);
            DAUtil.ReadIDAttribute(reader, 8, ref entity.m_IntezmenyId, 0);
            DAUtil.ReadIDAttribute(reader, 9, ref entity.m_TanevId, 0);
        }

        public override void LoadEntityFields(eLearning entity, SDA.DataProvider.SDADataReader reader, ColumnFilterMode columnFilterMode, IEnumerable<string> columns)
        {
            int index = 1;
            if (columns == null)
            {
                columns = new List<string>(index);
            }
            // eLearning betöltése
            // eLearning mezői
            if (((columnFilterMode == ColumnFilterMode.DEFAULT_ALLOWED) ^ (columns.Contains("Befejezett"))))
            {
                entity.m_Befejezett = DAUtil.ReadBooleanAttribute(reader, index++, false);
            }
            if (((columnFilterMode == ColumnFilterMode.DEFAULT_ALLOWED) ^ (columns.Contains("eLearningAzonosito"))))
            {
                entity.m_eLearningAzonosito = DAUtil.ReadStringAttribute(reader, index++, "");
            }
            if (((columnFilterMode == ColumnFilterMode.DEFAULT_ALLOWED) ^ (columns.Contains("eLearningFelhasznaloNev"))))
            {
                entity.m_eLearningFelhasznaloNev = DAUtil.ReadStringAttribute(reader, index++, "");
            }
            if (((columnFilterMode == ColumnFilterMode.DEFAULT_ALLOWED) ^ (columns.Contains("Sikeres"))))
            {
                entity.m_Sikeres = DAUtil.ReadBooleanAttribute(reader, index++, false);
            }
            if (((columnFilterMode == ColumnFilterMode.DEFAULT_ALLOWED) ^ (columns.Contains("Szerzodeses"))))
            {
                entity.m_Szerzodeses = DAUtil.ReadBooleanAttribute(reader, index++, false);
            }
            if (((columnFilterMode == ColumnFilterMode.DEFAULT_ALLOWED) ^ (columns.Contains("TananyagKod"))))
            {
                entity.m_TananyagKod = DAUtil.ReadStringAttribute(reader, index++, "");
            }
            // eLearning kapcsoló mezői
            DAUtil.ReadIDAttribute(reader, index++, ref entity.m_FelhasznaloId, 0);
            DAUtil.ReadIDAttribute(reader, index++, ref entity.m_IntezmenyId, 0);
            DAUtil.ReadIDAttribute(reader, index++, ref entity.m_TanevId, 0);
        }

        #endregion

        #region Paraméter kötés

        public override void BindAttributes(eLearning entity, SDA.DataProvider.SDACommand command)
        {
            DAUtil.BindParameter(command, "pBEFEJEZETT", SDA.DataProvider.SDADBType.Boolean /* Boolean */, 1, entity.m_Befejezett, false);

            DAUtil.BindParameter(command, "pELEARNINGAZONOSITO", SDA.DataProvider.SDADBType.String, 500, entity.m_eLearningAzonosito, false);

            DAUtil.BindParameter(command, "pELEARNINGFELHASZNALONEV", SDA.DataProvider.SDADBType.String, 500, entity.m_eLearningFelhasznaloNev, false);

            DAUtil.BindParameter(command, "pSIKERES", SDA.DataProvider.SDADBType.Boolean /* Boolean */, 1, entity.m_Sikeres, false);

            DAUtil.BindParameter(command, "pSZERZODESES", SDA.DataProvider.SDADBType.Boolean /* Boolean */, 1, entity.m_Szerzodeses, false);

            DAUtil.BindParameter(command, "pTANANYAGKOD", SDA.DataProvider.SDADBType.String, 500, entity.m_TananyagKod, false);
        }

        public override void DynamicBindAttributes(eLearning entity, SDA.DataProvider.SDACommand command)
        {
            System.Text.StringBuilder sb = new System.Text.StringBuilder();
            if (entity.HasChanged("Befejezett"))
            {
                sb.Append("C_BEFEJEZETT = :pBEFEJEZETT,");

                DAUtil.BindParameter(command, "pBEFEJEZETT", SDA.DataProvider.SDADBType.Boolean /* Boolean */, 1, entity.m_Befejezett, false);

            }
            if (entity.HasChanged("eLearningAzonosito"))
            {
                sb.Append("C_ELEARNINGAZONOSITO = :pELEARNINGAZONOSITO,");

                DAUtil.BindParameter(command, "pELEARNINGAZONOSITO", SDA.DataProvider.SDADBType.String, 500, entity.m_eLearningAzonosito, false);

            }
            if (entity.HasChanged("eLearningFelhasznaloNev"))
            {
                sb.Append("C_ELEARNINGFELHASZNALONEV = :pELEARNINGFELHASZNALONEV,");

                DAUtil.BindParameter(command, "pELEARNINGFELHASZNALONEV", SDA.DataProvider.SDADBType.String, 500, entity.m_eLearningFelhasznaloNev, false);

            }
            if (entity.HasChanged("Sikeres"))
            {
                sb.Append("C_SIKERES = :pSIKERES,");

                DAUtil.BindParameter(command, "pSIKERES", SDA.DataProvider.SDADBType.Boolean /* Boolean */, 1, entity.m_Sikeres, false);

            }
            if (entity.HasChanged("Szerzodeses"))
            {
                sb.Append("C_SZERZODESES = :pSZERZODESES,");

                DAUtil.BindParameter(command, "pSZERZODESES", SDA.DataProvider.SDADBType.Boolean /* Boolean */, 1, entity.m_Szerzodeses, false);

            }
            if (entity.HasChanged("TananyagKod"))
            {
                sb.Append("C_TANANYAGKOD = :pTANANYAGKOD,");

                DAUtil.BindParameter(command, "pTANANYAGKOD", SDA.DataProvider.SDADBType.String, 500, entity.m_TananyagKod, false);

            }
            command.CommandText = command.CommandText.Replace("{COLUMNS}", sb.ToString());
        }

        public override void BindAssociations(eLearning entity, SDA.DataProvider.SDACommand command)
        {
            DAUtil.BindIdParameter(command, "pFELHASZNALOID", entity.InternalFelhasznaloId);
            DAUtil.BindIdParameter(command, "pINTEZMENYID", entity.InternalIntezmenyId);
            DAUtil.BindIdParameter(command, "pTANEVID", entity.InternalTanevId);
        }

        #endregion
    }

    internal class eLearningDA : EntityDataAccessor<eLearning>
    {
        private static eLearningDBHelper m_dbhelper = new eLearningDBHelper();

        protected override IEntityDBHelper<eLearning> dbhelper
        {
            get { return m_dbhelper; }
        }

        #region Load

        public override bool LoadEntity(eLearning entity, int entityId)
        {
            return LoadById(entity, entityId);
        }

        public override bool FilteredLoadEntity(eLearning entity, int entityId, ColumnFilterMode columnFilterMode, IEnumerable<string> columns)
        {
            return LoadById(entity, entityId, columnFilterMode, columns);
        }

        public bool LoadById(eLearning entity, int entityId)
        {
            using (SDA.DataProvider.SDACommand command = dbhelper.CreateEmptyQueryCommand())
            {
                command.CommandText += " and (T_ELEARNING_OSSZES.ID = :pID) ";
                command.Parameters.Add("pID", SDA.DataProvider.SDADBType.Int).Value = entityId;
                return dbhelper.LoadSingleEntity(entity, command);
            }
        }

        public bool LoadById(eLearning entity, int entityId, ColumnFilterMode columnFilterMode, IEnumerable<string> columns)
        {
            using (SDA.DataProvider.SDACommand command = dbhelper.CreateDynamicQueryCommand(columnFilterMode, columns))
            {
                command.CommandText += " and (T_ELEARNING_OSSZES.ID = :pID) ";
                command.Parameters.Add("pID", SDA.DataProvider.SDADBType.Int).Value = entityId;
                return dbhelper.LoadSingleEntity(entity, command, columnFilterMode, columns);
            }
        }

        [Obsolete("Ezt ne használjátok, mert mindenhova bele kellene fogalmazni a tanév szűrést is! Meg fog majd szűnni!")]
        public override void LoadWithFilter(IEntityCollection<eLearning> collection, string filter, Dictionary<string, object> commandParameters = null)
        {
            using (SDA.DataProvider.SDACommand command = dbhelper.CreateEmptyQueryCommand())
            {
                command.CommandText += filter;
                dbhelper.CreateParameterBinding(command, commandParameters);
                dbhelper.LoadEntityCollection(collection, command);
            }
        }

        [Obsolete("Ezt ne használjátok, mert mindenhova bele kellene fogalmazni a tanév szűrést is! Meg fog majd szűnni!")]
        public override void LoadWithFilter(IEntityCollection<eLearning> collection, string filter, ColumnFilterMode columnFilterMode, IEnumerable<string> columns, Dictionary<string, object> commandParameters = null)
        {
            using (SDA.DataProvider.SDACommand command = dbhelper.CreateDynamicQueryCommand(columnFilterMode, columns))
            {
                command.CommandText += filter;
                dbhelper.CreateParameterBinding(command, commandParameters);
                dbhelper.LoadEntityCollection(collection, command, columnFilterMode, columns);
            }
        }

        #endregion

        #region InsertEntity

        private const string m_InsertCommandText = @"
        insert into T_ELEARNING_OSSZES (
            C_BEFEJEZETT,
            C_ELEARNINGAZONOSITO,
            C_ELEARNINGFELHASZNALONEV,
            C_SIKERES,
            C_SZERZODESES,
            C_TANANYAGKOD,
            C_FELHASZNALOID,
            C_INTEZMENYID,
            C_TANEVID,
            TOROLT,
            SERIAL,
            CREATED,
            CREATOR)
        values (
            :pBEFEJEZETT,
            :pELEARNINGAZONOSITO,
            :pELEARNINGFELHASZNALONEV,
            :pSIKERES,
            :pSZERZODESES,
            :pTANANYAGKOD,
            :pFELHASZNALOID,
            :pINTEZMENYID,
            :pTANEVID,
            :pTOROLT,
            :pSERIAL,
            :pCREATED,
            :pCREATOR);

        SELECT SCOPE_IDENTITY() as ID;

        ";

        public override void InsertEntity(eLearning entity)
        {
            entity.Serial = 0;
            SetEntityCreator(entity, DateTime.Now, UserContext.Instance.UniqueIdentifier);

            using (SDA.DataProvider.SDACommand command = DAUtil.CreateCommand(m_InsertCommandText))
            {
                dbhelper.BindAttributes(entity, command);
                dbhelper.BindAssociations(entity, command);
                command.Parameters.Add("pTOROLT", SDA.DataProvider.SDADBType.Boolean /* Boolean */).Value = false;
                command.Parameters.Add("pSERIAL", SDA.DataProvider.SDADBType.Int).Value = 0;
                command.Parameters.Add("pCREATED", SDA.DataProvider.SDADBType.DateTime).Value = entity.EntityCreated;
                command.Parameters.Add("pCREATOR", SDA.DataProvider.SDADBType.Int).Value = entity.EntityCreator;
                entity.ID = Convert.ToInt32(command.ExecuteScalar());

            }
        }

        #endregion

        #region UpdateEntity

        private const string m_UpdateAttributesCommandText = @"
        update T_ELEARNING_OSSZES
        set
          {COLUMNS}
          SERIAL = ISNULL(SERIAL,0) + 1,
          LASTCHANGED = :pLASTCHANGED,
          MODIFIER = :pMODIFIER,
          TOROLT = :pTOROLT
        where
          (ID = :pID) and (ISNULL(SERIAL,0) = :pSERIAL)
        ";

        public override bool UpdateEntity(eLearning entity)
        {
            using (SDA.DataProvider.SDACommand command = DAUtil.CreateCommand(m_UpdateAttributesCommandText))
            {
                bool result = true;
                dbhelper.DynamicBindAttributes(entity, command);

                SetEntityModifier(entity, DateTime.Now, UserContext.Instance.UniqueIdentifier);

                command.Parameters.Add("pID", SDA.DataProvider.SDADBType.Int).Value = entity.ID;
                command.Parameters.Add("pSERIAL", SDA.DataProvider.SDADBType.Int).Value = entity.Serial;
                command.Parameters.Add("pLASTCHANGED", SDA.DataProvider.SDADBType.DateTime).Value = entity.EntityLastChanged;
                command.Parameters.Add("pMODIFIER", SDA.DataProvider.SDADBType.Int).Value = entity.EntityModifier;
                command.Parameters.Add("pTOROLT", SDA.DataProvider.SDADBType.Boolean /* Boolean */).Value = entity.Torolt;

                result = (command.ExecuteNonQuery() == 1);
                if (result == true)
                    entity.Serial++;

                return result;
            }
        }

        #endregion

        #region DeleteEntity

        private const string m_FizikaiDeleteCommandText = @"DELETE FROM T_ELEARNING_OSSZES WHERE (ID = :pID) ";
        private const string m_LogikaiDeleteCommandText = @"
        UPDATE T_ELEARNING_OSSZES 
        SET TOROLT = 'T' ,
          SERIAL = SERIAL + 1,
          LASTCHANGED = :pLASTCHANGED,
          MODIFIER = :pMODIFIER
        WHERE (ID = :pID) ";

        public override void DeleteEntity(eLearning entity, bool logikai = true)
        {
            var _deleteCommandText = logikai ? m_LogikaiDeleteCommandText : m_FizikaiDeleteCommandText;
            using (SDA.DataProvider.SDACommand command = DAUtil.CreateCommand(_deleteCommandText))
            {
                command.Parameters.Add("pID", SDA.DataProvider.SDADBType.Int).Value = entity.ID;

                if (logikai)
                {
                    DateTime lastchanged = DateTime.Now;
                    var modifier = UserContext.Instance.UniqueIdentifier;

                    command.Parameters.Add("pLASTCHANGED", SDA.DataProvider.SDADBType.DateTime).Value = lastchanged;
                    command.Parameters.Add("pMODIFIER", SDA.DataProvider.SDADBType.Int).Value = modifier;
                }

                if (command.ExecuteNonQuery() != 1)
                {
                    throw new EntityNotFoundException("eLearning", entity.ID);
                }
            }

        }

        #endregion

        #region UpdateAssociations

        private const string m_UpdateAssociationCommandText = @"
        update T_ELEARNING_OSSZES
        set
            C_FELHASZNALOID = :pFELHASZNALOID,
            C_INTEZMENYID = :pINTEZMENYID,
            C_TANEVID = :pTANEVID,
            SERIAL = ISNULL(SERIAL,0) + 1,
            LASTCHANGED = :pLASTCHANGED,
            MODIFIER = :pMODIFIER
        where
          (ID = :pID) and (ISNULL(SERIAL,0) = :pSERIAL)
        ";

        public override bool UpdateAssociations(eLearning entity)
        {
            using (SDA.DataProvider.SDACommand command = DAUtil.CreateCommand(m_UpdateAssociationCommandText))
            {
                dbhelper.BindAssociations(entity, command);

                DateTime lastchanged = DateTime.Now;
                var modifier = UserContext.Instance.UniqueIdentifier;

                command.Parameters.Add("pID", SDA.DataProvider.SDADBType.Int).Value = entity.ID;
                command.Parameters.Add("pSERIAL", SDA.DataProvider.SDADBType.Int).Value = entity.Serial;
                command.Parameters.Add("pLASTCHANGED", SDA.DataProvider.SDADBType.DateTime).Value = lastchanged;
                command.Parameters.Add("pMODIFIER", SDA.DataProvider.SDADBType.Int).Value = modifier;

                bool result = (command.ExecuteNonQuery() == 1);
                if (result == true)
                {
                    entity.Serial++;
                    SetEntityModifier(entity, lastchanged, modifier);
                }
                return result;
            }
        }

        #endregion

        #region Asszociációkkal kapcsolatos adatbázisműveletek (entitásspecifikus)

        #region Mint asszociációs osztály
        #endregion


        #endregion
    }


    /// <summary>
    /// Az osztály elvégzi az UML modell 'Felhasznalo -> eLearning (eLearning)'
    /// asszociációjának teljes kezelését.
    /// </summary>
    internal class Felhasznalo_eLearning_DA : EntityCollectionDA<Felhasznalo, eLearning>
    {
        internal protected Felhasznalo_eLearning_DA(Felhasznalo owner)
            : base(owner)
        {
        }

        // Nincs kapcsolótábla
        private const string m_Filter = @" and (T_ELEARNING_OSSZES.C_FELHASZNALOID = :pID) ";

        public override void LoadCollection(IAssociatedEntityCollection<eLearning> collection)
        {
            new eLearningDBHelper().LoadByPartnerId(collection, m_Filter, Owner.ID);
        }

        private static SDA.DataProvider.SDACommand CreateInserteLearningCommand()
        {
            SDA.DataProvider.SDACommand result = new SDA.DataProvider.SDACommand();
            // nincs kapcsolótábla...
            result.CommandText = @"update T_ELEARNING_OSSZES set C_FELHASZNALOID = :pFELHASZNALOID where (ID = :pELEARNINGID)";
            result.Parameters.Add("pFELHASZNALOID", SDA.DataProvider.SDADBType.Int);
            result.Parameters.Add("pELEARNINGID", SDA.DataProvider.SDADBType.Int);
            return result;
        }

        private void DoAdd(Felhasznalo owner, eLearning partner)
        {
            using (SDA.DataProvider.SDACommand command = CreateInserteLearningCommand())
            {
                command.Connection = UserContext.Instance.SDAConnection;
                command.Transaction = UserContext.Instance.SDATransaction;
                command.Parameters["pFELHASZNALOID"].Value = owner.ID;
                command.Parameters["pELEARNINGID"].Value = partner.ID;
                command.ExecuteNonQuery();
            }
        }

        public override void AddItem(eLearning entity)
        {
            var assochandler = AssociationHandlerManager.Create<eLearning, Felhasznalo>("eLearning_Felhasznalo");
            assochandler.BeforeInsert(entity, this.Owner);
            entity.ModifyFelhasznalo(this.Owner);
            if (entity.State == EntityState.Modified)
            {
                entity.UpdateAssociations(true);
            }
            else
            {
                entity.Insert(true);
            }
            assochandler.AfterInsert(entity, this.Owner);
        }

        private static SDA.DataProvider.SDACommand CreateDeleteeLearningCommand()
        {
            SDA.DataProvider.SDACommand result = new SDA.DataProvider.SDACommand();
            // nincs kapcsolótábla...
            result.CommandText = @"update T_ELEARNING_OSSZES set C_FELHASZNALOID = null where (C_FELHASZNALOID = :pFELHASZNALOID and ID = :pELEARNINGID)";
            result.Parameters.Add("pFELHASZNALOID", SDA.DataProvider.SDADBType.Int);
            result.Parameters.Add("pELEARNINGID", SDA.DataProvider.SDADBType.Int);
            return result;
        }

        private void DoRemove(Felhasznalo owner, eLearning partner)
        {
            using (SDA.DataProvider.SDACommand command = CreateDeleteeLearningCommand())
            {
                command.Connection = UserContext.Instance.SDAConnection;
                command.Transaction = UserContext.Instance.SDATransaction;
                command.Parameters["pFELHASZNALOID"].Value = owner.ID;
                command.Parameters["pELEARNINGID"].Value = partner.ID;
                command.ExecuteNonQuery();
            }
        }

        public override void DeleteItem(eLearning entity)
        {
            var assochandler = AssociationHandlerManager.Create<eLearning, Felhasznalo>("eLearning_Felhasznalo");
            assochandler.BeforeDelete(entity, this.Owner);
            entity.Delete(true);
            assochandler.AfterDelete(entity, this.Owner);
        }
    }

    /// <summary>
    /// Az osztály elvégzi az UML modell 'Intezmeny -> eLearning (eLearning)'
    /// asszociációjának teljes kezelését.
    /// </summary>
    internal class Intezmeny_eLearning_DA : EntityCollectionDA<Intezmeny, eLearning>
    {
        internal protected Intezmeny_eLearning_DA(Intezmeny owner)
            : base(owner)
        {
        }

        // Nincs kapcsolótábla
        private const string m_Filter = @" and (T_ELEARNING_OSSZES.C_INTEZMENYID = :pID) ";

        public override void LoadCollection(IAssociatedEntityCollection<eLearning> collection)
        {
            new eLearningDBHelper().LoadByPartnerId(collection, m_Filter, Owner.ID);
        }

        private static SDA.DataProvider.SDACommand CreateInserteLearningCommand()
        {
            SDA.DataProvider.SDACommand result = new SDA.DataProvider.SDACommand();
            // nincs kapcsolótábla...
            result.CommandText = @"update T_ELEARNING_OSSZES set C_INTEZMENYID = :pINTEZMENYID where (ID = :pELEARNINGID)";
            result.Parameters.Add("pINTEZMENYID", SDA.DataProvider.SDADBType.Int);
            result.Parameters.Add("pELEARNINGID", SDA.DataProvider.SDADBType.Int);
            return result;
        }

        private void DoAdd(Intezmeny owner, eLearning partner)
        {
            using (SDA.DataProvider.SDACommand command = CreateInserteLearningCommand())
            {
                command.Connection = UserContext.Instance.SDAConnection;
                command.Transaction = UserContext.Instance.SDATransaction;
                command.Parameters["pINTEZMENYID"].Value = owner.ID;
                command.Parameters["pELEARNINGID"].Value = partner.ID;
                command.ExecuteNonQuery();
            }
        }

        public override void AddItem(eLearning entity)
        {
            var assochandler = AssociationHandlerManager.Create<eLearning, Intezmeny>("eLearning_Intezmeny");
            assochandler.BeforeInsert(entity, this.Owner);
            entity.ModifyIntezmeny(this.Owner);
            if (entity.State == EntityState.Modified)
            {
                entity.UpdateAssociations(true);
            }
            else
            {
                entity.Insert(true);
            }
            assochandler.AfterInsert(entity, this.Owner);
        }

        private static SDA.DataProvider.SDACommand CreateDeleteeLearningCommand()
        {
            SDA.DataProvider.SDACommand result = new SDA.DataProvider.SDACommand();
            // nincs kapcsolótábla...
            result.CommandText = @"update T_ELEARNING_OSSZES set C_INTEZMENYID = null where (C_INTEZMENYID = :pINTEZMENYID and ID = :pELEARNINGID)";
            result.Parameters.Add("pINTEZMENYID", SDA.DataProvider.SDADBType.Int);
            result.Parameters.Add("pELEARNINGID", SDA.DataProvider.SDADBType.Int);
            return result;
        }

        private void DoRemove(Intezmeny owner, eLearning partner)
        {
            using (SDA.DataProvider.SDACommand command = CreateDeleteeLearningCommand())
            {
                command.Connection = UserContext.Instance.SDAConnection;
                command.Transaction = UserContext.Instance.SDATransaction;
                command.Parameters["pINTEZMENYID"].Value = owner.ID;
                command.Parameters["pELEARNINGID"].Value = partner.ID;
                command.ExecuteNonQuery();
            }
        }

        public override void DeleteItem(eLearning entity)
        {
            var assochandler = AssociationHandlerManager.Create<eLearning, Intezmeny>("eLearning_Intezmeny");
            assochandler.BeforeDelete(entity, this.Owner);
            entity.Delete(true);
            assochandler.AfterDelete(entity, this.Owner);
        }
    }

    /// <summary>
    /// Az osztály elvégzi az UML modell 'Tanev -> eLearning (eLearning)'
    /// asszociációjának teljes kezelését.
    /// </summary>
    internal class Tanev_eLearning_DA : EntityCollectionDA<Tanev, eLearning>
    {
        internal protected Tanev_eLearning_DA(Tanev owner)
            : base(owner)
        {
        }

        // Nincs kapcsolótábla
        private const string m_Filter = @" and (T_ELEARNING_OSSZES.C_TANEVID = :pID) ";

        public override void LoadCollection(IAssociatedEntityCollection<eLearning> collection)
        {
            new eLearningDBHelper().LoadByPartnerId(collection, m_Filter, Owner.ID);
        }

        private static SDA.DataProvider.SDACommand CreateInserteLearningCommand()
        {
            SDA.DataProvider.SDACommand result = new SDA.DataProvider.SDACommand();
            // nincs kapcsolótábla...
            result.CommandText = @"update T_ELEARNING_OSSZES set C_TANEVID = :pTANEVID where (ID = :pELEARNINGID)";
            result.Parameters.Add("pTANEVID", SDA.DataProvider.SDADBType.Int);
            result.Parameters.Add("pELEARNINGID", SDA.DataProvider.SDADBType.Int);
            return result;
        }

        private void DoAdd(Tanev owner, eLearning partner)
        {
            using (SDA.DataProvider.SDACommand command = CreateInserteLearningCommand())
            {
                command.Connection = UserContext.Instance.SDAConnection;
                command.Transaction = UserContext.Instance.SDATransaction;
                command.Parameters["pTANEVID"].Value = owner.ID;
                command.Parameters["pELEARNINGID"].Value = partner.ID;
                command.ExecuteNonQuery();
            }
        }

        public override void AddItem(eLearning entity)
        {
            var assochandler = AssociationHandlerManager.Create<eLearning, Tanev>("eLearning_Tanev");
            assochandler.BeforeInsert(entity, this.Owner);
            entity.ModifyTanev(this.Owner);
            if (entity.State == EntityState.Modified)
            {
                entity.UpdateAssociations(true);
            }
            else
            {
                entity.Insert(true);
            }
            assochandler.AfterInsert(entity, this.Owner);
        }

        private static SDA.DataProvider.SDACommand CreateDeleteeLearningCommand()
        {
            SDA.DataProvider.SDACommand result = new SDA.DataProvider.SDACommand();
            // nincs kapcsolótábla...
            result.CommandText = @"update T_ELEARNING_OSSZES set C_TANEVID = null where (C_TANEVID = :pTANEVID and ID = :pELEARNINGID)";
            result.Parameters.Add("pTANEVID", SDA.DataProvider.SDADBType.Int);
            result.Parameters.Add("pELEARNINGID", SDA.DataProvider.SDADBType.Int);
            return result;
        }

        private void DoRemove(Tanev owner, eLearning partner)
        {
            using (SDA.DataProvider.SDACommand command = CreateDeleteeLearningCommand())
            {
                command.Connection = UserContext.Instance.SDAConnection;
                command.Transaction = UserContext.Instance.SDATransaction;
                command.Parameters["pTANEVID"].Value = owner.ID;
                command.Parameters["pELEARNINGID"].Value = partner.ID;
                command.ExecuteNonQuery();
            }
        }

        public override void DeleteItem(eLearning entity)
        {
            var assochandler = AssociationHandlerManager.Create<eLearning, Tanev>("eLearning_Tanev");
            assochandler.BeforeDelete(entity, this.Owner);
            entity.Delete(true);
            assochandler.AfterDelete(entity, this.Owner);
        }
    }

}