ff1f0833ad
* Restore EF Core persistence layer Originally, we had moved EF Core to the extensions repo, but in practice this turned out to be rather impractical when debugging elsa-core, given that we would lose all of the state (workflow definitions, instances, etc.) across application restarts. * Integrate PostgreSQL support into EF Core persistence and enhance BlobStorage workflows provider setup.
51 lines
2 KiB
C#
51 lines
2 KiB
C#
using System.Linq.Expressions;
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using Elsa.Common.Models;
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using JetBrains.Annotations;
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using Microsoft.EntityFrameworkCore;
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// ReSharper disable once CheckNamespace
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namespace Elsa.Persistence.EFCore.Extensions;
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/// <summary>
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/// Provides extensions to <see cref="IQueryable{T}"/>.
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/// </summary>
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[PublicAPI]
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public static class QueryableExtensions
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{
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/// <summary>
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/// Inserts a list of entities in bulk.
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/// </summary>
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public static async Task BulkInsertAsync<TDbContext, TEntity>(this TDbContext dbContext, IList<TEntity> entities, CancellationToken cancellationToken = default) where TDbContext : DbContext where TEntity : class, new()
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{
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var set = dbContext.Set<TEntity>();
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if (entities.Any())
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await set.AddRangeAsync(entities, cancellationToken);
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await dbContext.SaveChangesAsync(cancellationToken);
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}
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/// <summary>
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/// Returns a paged result from the specified query.
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/// </summary>
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public static async Task<Page<TTarget>> PaginateAsync<T, TTarget>(this IQueryable<T> queryable, Expression<Func<T, TTarget>> projection, PageArgs? pageArgs = null)
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{
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var count = await queryable.CountAsync();
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if (pageArgs?.Offset != null) queryable = queryable.Skip(pageArgs.Offset.Value);
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if (pageArgs?.Limit != null) queryable = queryable.Take(pageArgs.Limit.Value);
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var results = await queryable.Select(projection).ToListAsync();
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return Page.Of(results, count);
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}
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/// <summary>
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/// Returns a paged result from the specified query.
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/// </summary>
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public static async Task<Page<T>> PaginateAsync<T>(this IQueryable<T> queryable, PageArgs? pageArgs = null)
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{
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var count = await queryable.CountAsync();
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if (pageArgs?.Offset != null) queryable = queryable.Skip(pageArgs.Offset.Value);
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if (pageArgs?.Limit != null) queryable = queryable.Take(pageArgs.Limit.Value);
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var results = await queryable.ToListAsync();
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return Page.Of(results, count);
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}
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} |