| | | 1 | | using Ardalis.Specification.EntityFrameworkCore; |
| | | 2 | | |
| | | 3 | | namespace ZhEaIsNsAaBn.Infrastructure.Specifications; |
| | | 4 | | |
| | | 5 | | /// <summary><see cref="BaseSpecificationRepository{TDbContext, TEntity, TId}"/> for <see cref="int"/>-keyed entities.</ |
| | | 6 | | /// <typeparam name="TDbContext">The application's context.</typeparam> |
| | | 7 | | /// <typeparam name="TEntity">The entity type.</typeparam> |
| | | 8 | | public abstract class BaseSpecificationRepository< TDbContext, TEntity > : BaseSpecificationRepository<TDbContext, TEnti |
| | | 9 | | where TDbContext : DbContext |
| | | 10 | | where TEntity : class, IBaseEntity |
| | | 11 | | { |
| | | 12 | | /// <inheritdoc /> |
| | 0 | 13 | | protected BaseSpecificationRepository( IDbContextProvider<TDbContext> dbContextProvider ) : base( dbContextProvider |
| | | 14 | | |
| | | 15 | | /// <inheritdoc /> |
| | | 16 | | protected BaseSpecificationRepository( IDbContextProvider<TDbContext> dbContextProvider, ISpecificationEvaluator spe |
| | 0 | 17 | | : base( dbContextProvider, specificationEvaluator ) { } |
| | | 18 | | } |
| | | 19 | | |
| | | 20 | | /// <summary>Core <see cref="BaseRepository{TDbContext, TEntity, TId}"/> plus helpers that apply a specification.</summa |
| | | 21 | | /// <typeparam name="TDbContext">The application's context.</typeparam> |
| | | 22 | | /// <typeparam name="TEntity">The entity type.</typeparam> |
| | | 23 | | /// <typeparam name="TId">The key type.</typeparam> |
| | | 24 | | public abstract class BaseSpecificationRepository< TDbContext, TEntity, TId > : BaseRepository<TDbContext, TEntity, TId> |
| | | 25 | | where TDbContext : DbContext |
| | | 26 | | where TEntity : class, IBaseEntity<TId> |
| | | 27 | | where TId : struct, IEquatable<TId> |
| | | 28 | | { |
| | | 29 | | /// <summary>Creates the repository with Ardalis' default evaluator.</summary> |
| | | 30 | | /// <param name="dbContextProvider">The context provider.</param> |
| | | 31 | | protected BaseSpecificationRepository( IDbContextProvider<TDbContext> dbContextProvider ) : this( dbContextProvider, |
| | | 32 | | |
| | | 33 | | /// <summary>Creates the repository.</summary> |
| | | 34 | | /// <param name="dbContextProvider">The context provider.</param> |
| | | 35 | | /// <param name="specificationEvaluator">The specification evaluator.</param> |
| | | 36 | | /// <exception cref="ArgumentNullException"><paramref name="specificationEvaluator"/> is <see langword="null"/>.</ex |
| | | 37 | | protected BaseSpecificationRepository( IDbContextProvider<TDbContext> dbContextProvider, ISpecificationEvaluator spe |
| | | 38 | | { |
| | | 39 | | ArgumentNullException.ThrowIfNull( specificationEvaluator ); |
| | | 40 | | |
| | | 41 | | SpecificationEvaluator = specificationEvaluator; |
| | | 42 | | } |
| | | 43 | | |
| | | 44 | | |
| | | 45 | | /// <summary>The specification evaluator.</summary> |
| | | 46 | | protected ISpecificationEvaluator SpecificationEvaluator { get; } |
| | | 47 | | |
| | | 48 | | /// <summary>The shared context's error classifier (from its provider package); <see langword="null"/> when it has n |
| | | 49 | | protected IDbErrorClassifier? ErrorClassifier => GetDbContext().GetDbErrorClassifier(); |
| | | 50 | | |
| | | 51 | | |
| | | 52 | | /// <summary>The shared context's rows matching <paramref name="specification"/>.</summary> |
| | | 53 | | /// <param name="specification">The specification.</param> |
| | | 54 | | /// <param name="evaluateCriteriaOnly"><see langword="true"/> to apply only the criteria.</param> |
| | | 55 | | /// <returns>The query, or <see langword="null"/> when the specification is invalid.</returns> |
| | | 56 | | protected IQueryable<TEntity>? ApplySpecification( BaseSpecification<TEntity> specification, bool evaluateCriteriaOn |
| | | 57 | | { |
| | | 58 | | ArgumentNullException.ThrowIfNull( specification ); |
| | | 59 | | |
| | | 60 | | return specification.IsValid.IsSuccess ? SpecificationEvaluator.GetQuery( GetDbContext().Set<TEntity>().AsQuerya |
| | | 61 | | } |
| | | 62 | | |
| | | 63 | | /// <summary>Async version of <see cref="ApplySpecification(BaseSpecification{TEntity}, bool)"/>.</summary> |
| | | 64 | | /// <param name="specification">The specification.</param> |
| | | 65 | | /// <param name="evaluateCriteriaOnly"><see langword="true"/> to apply only the criteria.</param> |
| | | 66 | | /// <param name="cancellationToken">Token to cancel waiting for the context.</param> |
| | | 67 | | /// <returns>The query, or <see langword="null"/> when the specification is invalid.</returns> |
| | | 68 | | protected async Task<IQueryable<TEntity>?> ApplySpecificationAsync( |
| | | 69 | | BaseSpecification<TEntity> specification, bool evaluateCriteriaOnly = false, CancellationToken cancellationT |
| | | 70 | | ) |
| | | 71 | | { |
| | | 72 | | ArgumentNullException.ThrowIfNull( specification ); |
| | | 73 | | |
| | | 74 | | if ( !specification.IsValid.IsSuccess ) { return null; } |
| | | 75 | | |
| | | 76 | | |
| | | 77 | | var context = await GetDbContextAsync( cancellationToken ).ConfigureAwait( false ); |
| | | 78 | | |
| | | 79 | | |
| | | 80 | | return SpecificationEvaluator.GetQuery( context.Set<TEntity>().AsQueryable(), specification, evaluateCriteriaOnl |
| | | 81 | | } |
| | | 82 | | |
| | | 83 | | /// <summary>The shared context's rows matching <paramref name="specification"/>, projected by its <c>Query.Select</ |
| | | 84 | | /// <typeparam name="TResult">The read model.</typeparam> |
| | | 85 | | /// <param name="specification">The specification.</param> |
| | | 86 | | /// <param name="cancellationToken">Token to cancel waiting for the context.</param> |
| | | 87 | | /// <returns>The query; the specification's failure; or <see cref="Error.Unknown"/> when the query can't be built (e |
| | | 88 | | protected async Task<LayerResponse<IQueryable<TResult>>> ApplySpecificationAsync< TResult >( BaseSpecification<TEnti |
| | | 89 | | { |
| | | 90 | | ArgumentNullException.ThrowIfNull( specification ); |
| | | 91 | | |
| | | 92 | | if ( specification.IsValid.IsFailure ) { return LayerResponse<IQueryable<TResult>>.Failure( specification.IsVali |
| | | 93 | | |
| | | 94 | | |
| | | 95 | | var context = await GetDbContextAsync( cancellationToken ).ConfigureAwait( false ); |
| | | 96 | | |
| | | 97 | | |
| | | 98 | | return SafeExecution.ExecuteSafe( () => SpecificationEvaluator.GetQuery( context.Set<TEntity>().AsQueryable(), s |
| | | 99 | | } |
| | | 100 | | |
| | | 101 | | /// <summary>The shared context's rows matching <paramref name="specification"/>, projected by <paramref name="proje |
| | | 102 | | /// <typeparam name="TResult">The read model.</typeparam> |
| | | 103 | | /// <param name="specification">The specification.</param> |
| | | 104 | | /// <param name="project">Turns the filtered query into the read model.</param> |
| | | 105 | | /// <param name="cancellationToken">Token to cancel waiting for the context.</param> |
| | | 106 | | /// <returns>The query; the specification's failure; or <see cref="Error.Unknown"/> when the query can't be built (e |
| | | 107 | | protected async Task<LayerResponse<IQueryable<TResult>>> ApplySpecificationAsync< TResult >( |
| | | 108 | | BaseSpecification<TEntity> specification, Func<IQueryable<TEntity>, IQueryable<TResult>> project, Cancellati |
| | | 109 | | ) |
| | | 110 | | { |
| | | 111 | | ArgumentNullException.ThrowIfNull( specification ); |
| | | 112 | | ArgumentNullException.ThrowIfNull( project ); |
| | | 113 | | |
| | | 114 | | if ( specification.IsValid.IsFailure ) { return LayerResponse<IQueryable<TResult>>.Failure( specification.IsVali |
| | | 115 | | |
| | | 116 | | |
| | | 117 | | var context = await GetDbContextAsync( cancellationToken ).ConfigureAwait( false ); |
| | | 118 | | |
| | | 119 | | |
| | | 120 | | return SafeExecution.ExecuteSafe( () => project( SpecificationEvaluator.GetQuery( context.Set<TEntity>().AsQuery |
| | | 121 | | } |
| | | 122 | | } |