/branches/2012_08_17_EF5_Upgrade/code/DomainDriver.DomainModeling.Example/DomainObjects/DummyDomainObject.Storage.cs

using System;

using System.Collections.Generic;

using System.ComponentModel.DataAnnotations;

using System.ComponentModel.DataAnnotations.Schema;

using System.Data;

using System.Data.Entity;

using System.Linq;

using System.Linq.Expressions;

using System.Text;

using DomainDriver.DomainModeling.DataProviders;

using DomainDriver.DomainModeling.DomainObjects;

using DomainDriver.DomainModeling.Queries;

using DomainDriver.DomainModeling.StorageManagers.DataSetStorage;

using DomainDriver.DomainModeling.StorageManagers.EntityFrameworkStorage;

using ObjectRow = DomainDriver.DomainModeling.Example.ExampleModelDataSet.DummyDomainObjectsRow;

using RelationRow = DomainDriver.DomainModeling.Example.ExampleModelDataSet.DummyDomainObjectRelationsRow;



namespace DomainDriver.DomainModeling.Example.DomainObjects

{

    public partial class DummyDomainObject : IEfEntity<Guid>, IEfAggregate<DummyDomainObject>, IDataSetSerializable<DataSet, DataRow>, IDataSetSerializable<ExampleModelDataSet, DataRow>, IDataSetSerializable<ExampleModelDataSet, ObjectRow>

    {

        #region Entity Framework CTP5 Serialization Code



        [Key]

        [DatabaseGenerated(DatabaseGeneratedOption.None)]

        public Guid EF_Id

        {

            get { return m_Key; }

            set { m_Key = value; }

        }



        [NotMapped]

        public ICollection<DummyDomainObjectRelation> EF_Children

        {

            get { return m_Children.Values; }

            set

            {

                m_Children.Clear();

                foreach (DummyDomainObjectRelation relation in value)

                {

                    m_Children.Add(relation.ChildId, relation);

                }

            }

        }



        ICollection<QuerySpecification> IEfAggregate<DummyDomainObject>.OverriddenQueries

        {

            get

            {

                List<QuerySpecification> specifications = new List<QuerySpecification>();

                specifications.Add(new QuerySpecification(typeof(ContainsQuery<DummyDomainObject>), new string[] { "Children" }));

                return specifications;

            }

        }



        bool IEfAggregate<DummyDomainObject>.SearchNestedAggregateValues(DbContext context, IParameterizedQuery<DummyDomainObject> query)

        {

            IDictionary<string, object> parameterValues = query.ParameterValues;

            int containsParameterCount = 1;

            string containsParameterName = "Children";



            if ((query is ContainsQuery<DummyDomainObject>) && (parameterValues.Count == containsParameterCount) && (parameterValues.ContainsKey(containsParameterName)))

            {

                Guid childId = (Guid)parameterValues[containsParameterName];



                Expression<Func<DummyDomainObjectRelation, bool>> childQueryExpression = ((DummyDomainObjectRelation rel) => ((rel.ParentId == this.Key) && (rel.ChildId == childId)));

                IEnumerable<DummyDomainObjectRelation> childQueryResults = context.Set<DummyDomainObjectRelation>().Where<DummyDomainObjectRelation>(childQueryExpression.Compile());

                bool containsChild = (childQueryResults.Count<DummyDomainObjectRelation>() > 0);

                return containsChild;

            }



            throw new NotImplementedException();

        }



        void IEfAggregate<DummyDomainObject>.ReadNestedAggregateValues(DbContext context, object rootQueryPredicate, Dictionary<string, object> batchReadState)

        {

            IQueryable<DummyDomainObjectRelation> relations = context.Set<DummyDomainObjectRelation>().Where<DummyDomainObjectRelation>((DummyDomainObjectRelation rel) => rel.ParentId == this.Key);

            List<DummyDomainObjectRelation> relationList = new List<DummyDomainObjectRelation>(relations);

            this.EF_Children = relationList;

        }



        void IEfAggregate<DummyDomainObject>.AddNestedAggregateValues(DbContext context)

        {

            Expression<Func<ICollection<DummyDomainObjectRelation>>> nestedObjectsGetterExpression = () => this.EF_Children;

            EfAggregateUtilities.AddNestedValues<DummyDomainObjectRelation>(context, nestedObjectsGetterExpression);

        }



        void IEfAggregate<DummyDomainObject>.UpdateNestedAggregateValues(DbContext context, DummyDomainObject originalAggregateRoot)

        {

            Expression<Func<DummyDomainObjectRelation, Guid>> keyGetterExpression = (DummyDomainObjectRelation nestedObj) => nestedObj.ChildId;

            Expression<Func<DummyDomainObjectRelation, DummyDomainObjectRelation, bool>> nestedObjectsMatchExpression = (DummyDomainObjectRelation obj1, DummyDomainObjectRelation obj2) => ((obj1.ParentId == obj2.ParentId) && (obj1.ChildId == obj2.ChildId));

            Expression<Func<DummyDomainObject, IDictionary<Guid, DummyDomainObjectRelation>>> dictionaryGetterExpression = (DummyDomainObject agg) => agg.m_Children;

            EfAggregateUtilities.UpdateNestedValues<DummyDomainObject, Guid, DummyDomainObjectRelation>(context, this, originalAggregateRoot, keyGetterExpression, nestedObjectsMatchExpression, dictionaryGetterExpression);

        }



        void IEfAggregate<DummyDomainObject>.DeleteNestedAggregateValues(DbContext context)

        {

            Expression<Func<DummyDomainObjectRelation, bool>> deleteQueryExpression = ((DummyDomainObjectRelation rel) => (rel.ParentId == this.Key));

            EfAggregateUtilities.DeleteNestedValues(context, deleteQueryExpression);

        }



        #endregion



        #region DataSet Serialization Methods



        public void Serialize(DataSet dataSource, DataRow objectRow)

        {

            string keyColumnName = ExampleModelDataSet.SchemaHelper.DummyDomainObjects.DummyDomainObjectIdColumn.ColumnName;

            string indexColumnName = ExampleModelDataSet.SchemaHelper.DummyDomainObjects.IndexColumn.ColumnName;

            string nameColumnName = ExampleModelDataSet.SchemaHelper.DummyDomainObjects.NameColumn.ColumnName;

            string parentIdColumnName = ExampleModelDataSet.SchemaHelper.DummyDomainObjects.ParentDummyDomainObjectIdColumn.ColumnName;



            objectRow[keyColumnName] = m_Key;

            objectRow[indexColumnName] = m_Index;

            objectRow[nameColumnName] = m_Name;

            objectRow.SerializeNullableField<Guid>(m_Parent, ExampleModelDataSet.SchemaHelper.DummyDomainObjects.ParentDummyDomainObjectIdColumn);



            string subTableName = ExampleModelDataSet.SchemaHelper.DummyDomainObjectRelations.TableName;

            string subParentIdColumnName = ExampleModelDataSet.SchemaHelper.DummyDomainObjectRelations.ParentDummyDomainObjectIdColumn.ColumnName;

            string subChildIdColumnName = ExampleModelDataSet.SchemaHelper.DummyDomainObjectRelations.ChildDummyDomainObjectIdColumn.ColumnName;

            DataTable relationTable = dataSource.Tables[subTableName];



            foreach (DummyDomainObjectRelation relation in m_Children.Values)

            {

                DataRow relationRow = relationTable.NewRow();

                relationRow[subParentIdColumnName] = relation.ParentId;

                relationRow[subChildIdColumnName] = relation.ChildId;

                relationTable.Rows.Add(relationRow);

            }

        }



        public void Deserialize(DataSet dataSource, DataRow objectRow)

        {

            string keyColumnName = ExampleModelDataSet.SchemaHelper.DummyDomainObjects.DummyDomainObjectIdColumn.ColumnName;

            string indexColumnName = ExampleModelDataSet.SchemaHelper.DummyDomainObjects.IndexColumn.ColumnName;

            string nameColumnName = ExampleModelDataSet.SchemaHelper.DummyDomainObjects.NameColumn.ColumnName;

            string parentIdColumnName = ExampleModelDataSet.SchemaHelper.DummyDomainObjects.ParentDummyDomainObjectIdColumn.ColumnName;



            m_Key = objectRow.Field<Guid>(keyColumnName);

            m_Index = objectRow.Field<int>(indexColumnName);

            m_Name = objectRow.Field<string>(nameColumnName);

            objectRow.DeserializeNullableField<Guid>(out m_Parent, ExampleModelDataSet.SchemaHelper.DummyDomainObjects.ParentDummyDomainObjectIdColumn);



            string subTableName = ExampleModelDataSet.SchemaHelper.DummyDomainObjectRelations.TableName;

            string subParentIdColumnName = ExampleModelDataSet.SchemaHelper.DummyDomainObjectRelations.ParentDummyDomainObjectIdColumn.ColumnName;

            string subChildIdColumnName = ExampleModelDataSet.SchemaHelper.DummyDomainObjectRelations.ChildDummyDomainObjectIdColumn.ColumnName;

            DataTable relationTable = dataSource.Tables[subTableName];

            string selectStmt = string.Format("{0} = '{1}'", subParentIdColumnName, m_Key.ToString());



            foreach (DataRow relationRow in relationTable.Select(selectStmt))

            {

                if (relationRow.IsNull(subParentIdColumnName))

                { throw new ApplicationException(); }

                if (relationRow.Field<Guid>(subParentIdColumnName) != m_Key)

                { throw new ApplicationException(); }



                Guid childId = relationRow.Field<Guid>(subChildIdColumnName);

                m_Children.Add(childId, new DummyDomainObjectRelation(m_Key, childId));

            }

        }



        #endregion



        #region ExampleModelDataSet Serialization Methods



        public string ObjectTableName

        {

            get { return ExampleModelDataSet.SchemaHelper.DummyDomainObjects.TableName; }

        }



        public string KeyColumnName

        {

            get { return ExampleModelDataSet.SchemaHelper.DummyDomainObjects.DummyDomainObjectIdColumn.ColumnName; }

        }



        public void Serialize(ExampleModelDataSet dataSource, DataRow objectRow)

        {

            Serialize(dataSource, objectRow as ObjectRow);

        }



        public void Serialize(ExampleModelDataSet dataSource, ObjectRow objectRow)

        {

            objectRow.DummyDomainObjectId = m_Key;

            objectRow.Index = m_Index;

            objectRow.Name = m_Name;



            objectRow.SerializeNullableField<Guid>(m_Parent, ExampleModelDataSet.SchemaHelper.DummyDomainObjects.ParentDummyDomainObjectIdColumn);



            foreach (DummyDomainObjectRelation relation in m_Children.Values)

            {

                RelationRow relationRow = dataSource.DummyDomainObjectRelations.NewDummyDomainObjectRelationsRow();

                relationRow.ParentDummyDomainObjectId = relation.ParentId;

                relationRow.ChildDummyDomainObjectId = relation.ChildId;

                dataSource.DummyDomainObjectRelations.AddDummyDomainObjectRelationsRow(relationRow);

            }

        }



        public void Deserialize(ExampleModelDataSet dataSource, DataRow objectRow)

        {

            Deserialize(dataSource, objectRow as ObjectRow);

        }



        public void Deserialize(ExampleModelDataSet dataSource, ObjectRow objectRow)

        {

            m_Key = objectRow.DummyDomainObjectId;

            m_Index = objectRow.Index;

            m_Name = objectRow.Name;



            objectRow.DeserializeNullableField<Guid>(out m_Parent, ExampleModelDataSet.SchemaHelper.DummyDomainObjects.ParentDummyDomainObjectIdColumn);



            foreach (RelationRow relationRow in objectRow.GetDummyDomainObjectRelationsRowsByDummyDomainObjects_DummyDomainObjects_Children_Parent())

            {

                if (relationRow.ParentDummyDomainObjectId != m_Key)

                { throw new ApplicationException(); }



                Guid childId = relationRow.ChildDummyDomainObjectId;

                m_Children.Add(childId, new DummyDomainObjectRelation(m_Key, childId));

            }

        }



        #endregion

    }

}