C# IEntityCollection类代码示例

 public RelationMemberTests()
 {
     Mock<IEntityCollection<IOsmGeometry>> _nodesCollectionM = new Mock<IEntityCollection<IOsmGeometry>>();
     _nodesCollectionM.SetupGet(c => c[1, EntityType.Node]).Returns(new Node(1, 1.1, 2.2));
     _nodesCollectionM.Setup(c => c.Contains(1, EntityType.Node)).Returns(true);
     _nodesEntityCollection = _nodesCollectionM.Object;
 }

 public WayTests()
 {
     Mock<IEntityCollection<IOsmGeometry>> _nodesCollectionM = new Mock<IEntityCollection<IOsmGeometry>>();
     _nodesCollectionM.SetupGet(c => c[1, EntityType.Node]).Returns(_nodes[0]);
     _nodesCollectionM.SetupGet(c => c[2, EntityType.Node]).Returns(_nodes[1]);
     _nodesCollectionM.SetupGet(c => c[3, EntityType.Node]).Returns(_nodes[2]);
     _nodesEntityCollection = _nodesCollectionM.Object;
 }

 public BindableGrid(string id, IEntityCollection dataCollection)
 {
     this.ID = id;
     this.Value = null;
     this.Collection = dataCollection;
     if (this.Collection != null && this.Collection.IDbTable.PrimaryKey.Count > 0)
         this.ColumnName = this.Collection.IDbTable.PrimaryKey[0].ColumnName;
 }

 /// <summary>Retrieves in the calling AuditActionCollection object all AuditActionEntity objects which are related via a relation of type 'm:n' with the passed in RoleEntity.</summary>
 /// <param name="containingTransaction">A containing transaction, if caller is added to a transaction, or null if not.</param>
 /// <param name="collectionToFill">Collection to fill with the entity objects retrieved</param>
 /// <param name="maxNumberOfItemsToReturn"> The maximum number of items to return with this retrieval query. When set to 0, no limitations are specified.</param>
 /// <param name="sortClauses">The order by specifications for the sorting of the resultset. When not specified, no sorting is applied.</param>
 /// <param name="entityFactoryToUse">The EntityFactory to use when creating entity objects during a GetMulti() call.</param>
 /// <param name="roleInstance">RoleEntity object to be used as a filter in the m:n relation</param>
 /// <param name="prefetchPathToUse">the PrefetchPath which defines the graph of objects to fetch.</param>
 /// <param name="pageNumber">The page number to retrieve.</param>
 /// <param name="pageSize">The page size of the page to retrieve.</param>
 /// <returns>true if succeeded, false otherwise</returns>
 public bool GetMultiUsingRolesWithAuditAction(ITransaction containingTransaction, IEntityCollection collectionToFill, long maxNumberOfItemsToReturn, ISortExpression sortClauses, IEntityFactory entityFactoryToUse, IEntity roleInstance, IPrefetchPath prefetchPathToUse, int pageNumber, int pageSize)
 {
     RelationCollection relations = new RelationCollection();
     relations.Add(AuditActionEntity.Relations.RoleAuditActionEntityUsingAuditActionID, "RoleAuditAction_");
     relations.Add(RoleAuditActionEntity.Relations.RoleEntityUsingRoleID, "RoleAuditAction_", string.Empty, JoinHint.None);
     IPredicateExpression selectFilter = new PredicateExpression();
     selectFilter.Add(new FieldCompareValuePredicate(roleInstance.Fields[(int)RoleFieldIndex.RoleID], ComparisonOperator.Equal));
     return this.GetMulti(containingTransaction, collectionToFill, maxNumberOfItemsToReturn, sortClauses, entityFactoryToUse, selectFilter, relations, prefetchPathToUse, pageNumber, pageSize);
 }

        public void BulkInsert(IConnectionProvider conn, IEntityCollection newEntities, IEntityDaoFactory daoFactory)
        {
            if (newEntities.Count == 0)
                return;

            DataTable newRecords = newEntities.ToDataTable();
            var bulkCopy = BuildSqlBulkCopy(conn, newEntities.IDbTable.TableName, newRecords);
            bulkCopy.WriteToServer(newRecords);
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="ProductCollection"/> class.
        /// </summary>
        /// <param name="entityCollection">
        /// The <see cref="IEntityCollection"/>.
        /// </param>
        /// <exception cref="Exception">
        /// Throws an exception if the <see cref="IEntityCollection"/> is not a product collection
        /// </exception>
        internal ProductCollection(IEntityCollection entityCollection)
        {
            Mandate.ParameterNotNull(entityCollection, "entityCollection");
            if (entityCollection.EntityTfKey != Core.Constants.TypeFieldKeys.Entity.ProductKey)
            {
                throw new Exception("Must be a product collection");
            }

            this._entityCollection = entityCollection;
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="EntityCollectionProxyBase"/> class.
        /// </summary>
        /// <param name="collection">
        /// The collection.
        /// </param>
        protected EntityCollectionProxyBase(IEntityCollection collection)
        {
            this.Key = collection.Key;
            this.ParentKey = collection.ParentKey;
            this.ProviderKey = collection.ProviderKey;
            this.SortOrder = collection.SortOrder;
            this.Name = collection.Name;
            this.ExtendedData = collection.ExtendedData;

            this.Initialize(collection.ProviderKey);
        }

 /// <summary>Retrieves in the calling MembershipCollection object all MembershipEntity objects which have data in common with the specified related Entities. If one is omitted, that entity is not used as a filter. </summary>
 /// <param name="containingTransaction">A containing transaction, if caller is added to a transaction, or null if not.</param>
 /// <param name="collectionToFill">Collection to fill with the entity objects retrieved</param>
 /// <param name="maxNumberOfItemsToReturn"> The maximum number of items to return with this retrieval query. When set to 0, no limitations are specified.</param>
 /// <param name="sortClauses">The order by specifications for the sorting of the resultset. When not specified, no sorting is applied.</param>
 /// <param name="entityFactoryToUse">The EntityFactory to use when creating entity objects during a GetMulti() call.</param>
 /// <param name="filter">Extra filter to limit the resultset. Predicate expression can be null, in which case it will be ignored.</param>
 /// <param name="roleInstance">RoleEntity instance to use as a filter for the MembershipEntity objects to return</param>
 /// <param name="storeInformationInstance">StoreInformationEntity instance to use as a filter for the MembershipEntity objects to return</param>
 /// <param name="pageNumber">The page number to retrieve.</param>
 /// <param name="pageSize">The page size of the page to retrieve.</param>
 public bool GetMulti(ITransaction containingTransaction, IEntityCollection collectionToFill, long maxNumberOfItemsToReturn, ISortExpression sortClauses, IEntityFactory entityFactoryToUse, IPredicateExpression filter, IEntity roleInstance, IEntity storeInformationInstance, int pageNumber, int pageSize)
 {
     this.EntityFactoryToUse = entityFactoryToUse;
     IEntityFields fieldsToReturn = EntityFieldsFactory.CreateEntityFieldsObject(ProductSearchEngine.EntityType.MembershipEntity);
     IPredicateExpression selectFilter = CreateFilterUsingForeignKeys(roleInstance, storeInformationInstance, fieldsToReturn);
     if(filter!=null)
     {
         selectFilter.AddWithAnd(filter);
     }
     return this.PerformGetMultiAction(containingTransaction, collectionToFill, maxNumberOfItemsToReturn, sortClauses, selectFilter, null, null, null, pageNumber, pageSize);
 }

 /// <summary>Retrieves in the calling ForumCollection object all ForumEntity objects which have data in common with the specified related Entities. If one is omitted, that entity is not used as a filter. </summary>
 /// <param name="containingTransaction">A containing transaction, if caller is added to a transaction, or null if not.</param>
 /// <param name="collectionToFill">Collection to fill with the entity objects retrieved</param>
 /// <param name="maxNumberOfItemsToReturn"> The maximum number of items to return with this retrieval query. When set to 0, no limitations are specified.</param>
 /// <param name="sortClauses">The order by specifications for the sorting of the resultset. When not specified, no sorting is applied.</param>
 /// <param name="entityFactoryToUse">The EntityFactory to use when creating entity objects during a GetMulti() call.</param>
 /// <param name="filter">Extra filter to limit the resultset. Predicate expression can be null, in which case it will be ignored.</param>
 /// <param name="sectionInstance">SectionEntity instance to use as a filter for the ForumEntity objects to return</param>
 /// <param name="defaultSupportQueueInstance">SupportQueueEntity instance to use as a filter for the ForumEntity objects to return</param>
 /// <param name="pageNumber">The page number to retrieve.</param>
 /// <param name="pageSize">The page size of the page to retrieve.</param>
 public bool GetMulti(ITransaction containingTransaction, IEntityCollection collectionToFill, long maxNumberOfItemsToReturn, ISortExpression sortClauses, IEntityFactory entityFactoryToUse, IPredicateExpression filter, IEntity sectionInstance, IEntity defaultSupportQueueInstance, int pageNumber, int pageSize)
 {
     this.EntityFactoryToUse = entityFactoryToUse;
     IEntityFields fieldsToReturn = EntityFieldsFactory.CreateEntityFieldsObject(SD.HnD.DAL.EntityType.ForumEntity);
     IPredicateExpression selectFilter = CreateFilterUsingForeignKeys(sectionInstance, defaultSupportQueueInstance, fieldsToReturn);
     if(filter!=null)
     {
         selectFilter.AddWithAnd(filter);
     }
     return this.PerformGetMultiAction(containingTransaction, collectionToFill, maxNumberOfItemsToReturn, sortClauses, selectFilter, null, null, null, pageNumber, pageSize);
 }

 /// <summary>
 /// Initializes a new instance of the <see cref="EntityFilterGroup"/> class.
 /// </summary>
 /// <param name="collection">
 /// The collection.
 /// </param>
 public EntityFilterGroup(IEntityCollection collection)
     : base(collection.EntityTfKey, collection.ProviderKey)
 {
     this.ParentKey = collection.ParentKey;
     this.Key = collection.Key;
     this.CreateDate = collection.CreateDate;
     this.UpdateDate = collection.UpdateDate;
     this.Name = collection.Name;
     this.IsFilter = collection.IsFilter;
     this.ExtendedData = collection.ExtendedData;
     this.SortOrder = collection.SortOrder;
     this.Filters = new EntityFilterCollection();
     this.ResetDirtyProperties();
 }

        public void BulkSave(IConnectionProvider conn, IEntityCollection entitiesToSave, IEntityDaoFactory daoFactory)
        {
            IEntityCollection newEntities, changedEntities, removedEntities;
            SplitCollectionForInsertUpdateAndDeleteOperations(entitiesToSave, out newEntities, out changedEntities, out removedEntities);

            bool connIsLocal = !conn.IsOpen;
            if (connIsLocal)
                conn.OpenConnection();

            try
            {
                BulkInsert(conn, newEntities, daoFactory);
                BulkUpdate(conn, changedEntities, daoFactory);
                BulkDelete(conn, removedEntities, daoFactory);
            }
            finally
            {
                if (connIsLocal)
                    conn.CloseConnection();
            }
        }

 private static void SplitCollectionForInsertUpdateAndDeleteOperations(IEntityCollection entitiesToSave, out IEntityCollection newEntities, out IEntityCollection changedEntities, out IEntityCollection removedEntities)
 {
     IDbTable table = entitiesToSave.IDbTable;
     newEntities = table.NewEntityCollection();
     changedEntities = table.NewEntityCollection();
     removedEntities = table.NewEntityCollection();
     foreach (IEntity entity in entitiesToSave)
     {
         switch (entity.EntityState)
         {
             case EntityState.New:
                 newEntities.Add(entity);
                 break;
             case EntityState.OutOfSync:
                 changedEntities.Add(entity);
                 break;
             case EntityState.PendingDeletion:
                 removedEntities.Add(entity);
                 break;
         }
     }
 }

        // Exports an IEntityCollection to a table in given Document. BookmarkName is the name of the bookmark associated
        // with the table.
        public static dynamic ExportEntityCollection(string DocumentPath, string BookmarkName, int StartRow, bool BuildColumnHeadings, IEntityCollection collection, List<string> ColumnNames)
        {
            dynamic functionReturnValue = null;
            List<ColumnMapping> mappings = new List<ColumnMapping>();
            ColumnMapping map = default(ColumnMapping);

            dynamic doc = null;
            WordHelper wordProxy = new WordHelper();

            // if Word is active then use it
            if (!wordProxy.GetWord())
            {
                if (!wordProxy.CreateWord())
                {
                    throw new System.Exception("Could not start Microsoft Word.");
                }
            }

            wordProxy.OpenDocument(DocumentPath);
            doc = wordProxy.Document;

            foreach (string name in ColumnNames)
            {
                map = new ColumnMapping("", name);
                map.TableField.DisplayName = name;
                mappings.Add(map);
            }

            functionReturnValue = ExportEntityCollection(doc, BookmarkName, StartRow, BuildColumnHeadings, collection, mappings);
            wordProxy.ShowDocument();
            return functionReturnValue;
        }

 private IProductCollection Convert(IEntityCollection ec)
 {
     return new ProductCollection(ec);
 }

 protected override void VisitEntityCollection(IEntityCollection entityCollection, PropertyInfo propertyInfo)
 {
     if (propertyInfo.GetCustomAttributes(typeof(CompositionAttribute), false).Any())
     {
         bool lastIsChild = this._isChild;
         this._isChild = true;
         IEnumerable<Entity> children = entityCollection.Entities;
         foreach (Entity child in children)
         {
             this.Visit(child);
         }
         this._isChild = lastIsChild;
     }
 }