| | | 1 | | // Copyright (c) Microsoft Corporation. All rights reserved. |
| | | 2 | | // Licensed under the MIT License. See License.txt in the project root for license information. |
| | | 3 | | |
| | | 4 | | namespace Microsoft.Azure.Batch |
| | | 5 | | { |
| | | 6 | | using System; |
| | | 7 | | using System.Collections; |
| | | 8 | | using System.Collections.Generic; |
| | | 9 | | using System.Threading.Tasks; |
| | | 10 | | |
| | | 11 | | /// <summary> |
| | | 12 | | /// Exposes synchronous and asynchronous enumerators based on async calls to server. |
| | | 13 | | /// </summary> |
| | | 14 | | internal class PagedEnumerable<EnumerationType> : IPagedEnumerable<EnumerationType> |
| | | 15 | | { |
| | | 16 | | private readonly NewEnumeratorFactory _enumeratorFactory; |
| | | 17 | | |
| | | 18 | | #region //constructors |
| | | 19 | | |
| | 0 | 20 | | private PagedEnumerable() |
| | | 21 | | { |
| | 0 | 22 | | } |
| | | 23 | | |
| | 41 | 24 | | internal PagedEnumerable(NewEnumeratorFactory enumeratorFactory) |
| | | 25 | | { |
| | 41 | 26 | | _enumeratorFactory = enumeratorFactory; |
| | 41 | 27 | | } |
| | | 28 | | |
| | | 29 | | #endregion // constructors |
| | | 30 | | |
| | | 31 | | // this factory is called on every call to "GetEnumerator()" |
| | | 32 | | // it returns the derived class that implements the specific |
| | | 33 | | // protocol calls to traverse the collection |
| | | 34 | | internal delegate PagedEnumeratorBase<EnumerationType> NewEnumeratorFactory(); |
| | | 35 | | |
| | | 36 | | |
| | | 37 | | // IEnumerable |
| | | 38 | | IEnumerator System.Collections.IEnumerable.GetEnumerator() |
| | | 39 | | { |
| | 0 | 40 | | PagedEnumeratorBase<EnumerationType> newEnumerator = _enumeratorFactory(); |
| | | 41 | | |
| | 0 | 42 | | return newEnumerator; |
| | | 43 | | } |
| | | 44 | | |
| | | 45 | | // IEnumerable<T> |
| | | 46 | | public IEnumerator<EnumerationType> GetEnumerator() |
| | | 47 | | { |
| | 13 | 48 | | PagedEnumeratorBase<EnumerationType> newEnumerator = _enumeratorFactory(); |
| | | 49 | | |
| | 13 | 50 | | return newEnumerator; |
| | | 51 | | } |
| | | 52 | | |
| | | 53 | | // IPagedEnumerable |
| | | 54 | | public IPagedEnumerator<EnumerationType> GetPagedEnumerator() |
| | | 55 | | { |
| | 27 | 56 | | PagedEnumeratorBase<EnumerationType> newEnumerator = _enumeratorFactory(); |
| | | 57 | | |
| | 27 | 58 | | return newEnumerator; |
| | | 59 | | } |
| | | 60 | | } |
| | | 61 | | } |