50 lines
1.6 KiB
C#
50 lines
1.6 KiB
C#
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using Raven.Client.Documents.Session;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading.Tasks;
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using zero.Core.Entities;
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namespace zero.Core.Extensions
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{
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public static class RavenDocumentSessionExtensions
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{
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/// <summary>
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/// Get revision list (without content JSON) for an entity
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/// </summary>
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public static async Task<ListResult<Revision>> GetRevisions<T>(this IAsyncDocumentSession session, string id, int pageNumber = 1, int pageSize = 30) where T : IZeroEntity
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{
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List<T> items = await session.Advanced.Revisions.GetForAsync<T>(id, pageNumber - 1, pageSize);
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List<Revision> revisions = new List<Revision>();
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string[] userIds = items.Select(x => x.LastModifiedById).Distinct().ToArray();
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Dictionary<string, User> users = await session.LoadAsync<User>(userIds);
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foreach (T item in items)
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{
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DateTime? date = session.Advanced.GetLastModifiedFor(item);
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Revision revision = new Revision()
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{
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ChangeVector = session.Advanced.GetChangeVectorFor(item),
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Date = date.HasValue ? new DateTimeOffset(date.Value) : item.CreatedDate
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};
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if (!item.LastModifiedById.IsNullOrEmpty() && users.TryGetValue(item.LastModifiedById, out User user))
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{
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revision.User = new RevisionUser()
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{
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AvatarId = user.AvatarId,
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Id = user.Id,
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Name = user.Name
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};
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}
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revisions.Add(revision);
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}
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return new ListResult<Revision>(revisions, revisions.Count, pageNumber, pageSize);
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}
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}
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}
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