| | | 1 | | using Fluorite.Extensions; |
| | | 2 | | using Fluorite.Strainer.Exceptions; |
| | | 3 | | using Fluorite.Strainer.Models.Sorting.Terms; |
| | | 4 | | using Fluorite.Strainer.Services.Metadata; |
| | | 5 | | |
| | | 6 | | namespace Fluorite.Strainer.Services.Sorting; |
| | | 7 | | |
| | | 8 | | public class SortingApplier : ISortingApplier |
| | | 9 | | { |
| | | 10 | | private readonly ICustomSortingExpressionProvider _customSortingExpressionProvider; |
| | | 11 | | private readonly ISortExpressionProvider _sortExpressionProvider; |
| | | 12 | | private readonly IMetadataFacade _metadataFacade; |
| | | 13 | | private readonly IStrainerOptionsProvider _strainerOptionsProvider; |
| | | 14 | | |
| | 6 | 15 | | public SortingApplier( |
| | 6 | 16 | | ICustomSortingExpressionProvider customSortingExpressionProvider, |
| | 6 | 17 | | ISortExpressionProvider sortExpressionProvider, |
| | 6 | 18 | | IMetadataFacade metadataFacade, |
| | 6 | 19 | | IStrainerOptionsProvider strainerOptionsProvider) |
| | | 20 | | { |
| | 6 | 21 | | _customSortingExpressionProvider = Guard.Against.Null(customSortingExpressionProvider); |
| | 6 | 22 | | _sortExpressionProvider = Guard.Against.Null(sortExpressionProvider); |
| | 6 | 23 | | _metadataFacade = Guard.Against.Null(metadataFacade); |
| | 6 | 24 | | _strainerOptionsProvider = Guard.Against.Null(strainerOptionsProvider); |
| | 6 | 25 | | } |
| | | 26 | | |
| | | 27 | | public bool TryApplySorting<T>(IList<ISortTerm> sortTerms, IQueryable<T> source, out IQueryable<T>? sortedSource) |
| | | 28 | | { |
| | 5 | 29 | | Guard.Against.Null(sortTerms); |
| | 5 | 30 | | Guard.Against.Null(source); |
| | | 31 | | |
| | 5 | 32 | | var options = _strainerOptionsProvider.GetStrainerOptions(); |
| | 5 | 33 | | var isSubsequent = false; |
| | 5 | 34 | | var isSortingApplied = false; |
| | 5 | 35 | | sortedSource = null; |
| | | 36 | | |
| | 16 | 37 | | foreach (var sortTerm in sortTerms) |
| | | 38 | | { |
| | 4 | 39 | | var metadata = _metadataFacade.GetMetadata<T>( |
| | 4 | 40 | | isSortableRequired: true, |
| | 4 | 41 | | isFilterableRequired: false, |
| | 4 | 42 | | name: sortTerm.Name); |
| | | 43 | | |
| | 4 | 44 | | if (metadata != null) |
| | | 45 | | { |
| | 1 | 46 | | var sortExpression = _sortExpressionProvider.GetExpression<T>(metadata, sortTerm, isSubsequent); |
| | 1 | 47 | | sortedSource = (sortedSource ?? source).OrderWithSortExpression(sortExpression); |
| | 1 | 48 | | isSortingApplied = true; |
| | | 49 | | } |
| | | 50 | | else |
| | | 51 | | { |
| | 3 | 52 | | if (_customSortingExpressionProvider.TryGetCustomExpression<T>(sortTerm, isSubsequent, out var sortExpre |
| | | 53 | | { |
| | 1 | 54 | | sortedSource = (sortedSource ?? source).OrderWithSortExpression(sortExpression!); |
| | 1 | 55 | | isSortingApplied = true; |
| | | 56 | | } |
| | | 57 | | else |
| | | 58 | | { |
| | 2 | 59 | | if (options.ThrowExceptions) |
| | | 60 | | { |
| | 1 | 61 | | sortedSource = null; |
| | | 62 | | |
| | 1 | 63 | | throw new StrainerSortNotFoundException( |
| | 1 | 64 | | sortTerm.Name, |
| | 1 | 65 | | $"Property or custom sorting method '{sortTerm.Name}' was not found."); |
| | | 66 | | } |
| | | 67 | | else |
| | | 68 | | { |
| | | 69 | | // Fail all terms since failing to find a correct method will affect sorting overall result. |
| | 1 | 70 | | sortedSource = null; |
| | | 71 | | |
| | 1 | 72 | | return false; |
| | | 73 | | } |
| | | 74 | | } |
| | | 75 | | } |
| | | 76 | | |
| | 2 | 77 | | isSubsequent = true; |
| | | 78 | | } |
| | | 79 | | |
| | 3 | 80 | | return isSortingApplied; |
| | 1 | 81 | | } |
| | | 82 | | } |