2023-05-17 16:30:13 +10:00
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using Microsoft.EntityFrameworkCore;
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2024-10-07 15:08:46 +10:00
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using Microsoft.EntityFrameworkCore.ChangeTracking;
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using Microsoft.Extensions.Logging;
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using PARR.Common.Domain;
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using PARR.DAL.Context;
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using PARR.DAL.DomainModels;
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using PARR.DAL.Models.Base;
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using PARR.DAL.Models.Base.History.Base;
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using PARR.DAL.Services.Interfaces.Base;
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using System.Reflection;
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namespace PARR.DAL.Services.Abstracts
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{
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internal abstract class BaseService<T> : IBaseService<T> where T : class, IBase
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{
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private readonly ILogger<BaseService<T>> logger;
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protected abstract DbSet<T> EntitySet { get; }
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protected abstract DataContext EntitiContext { get; }
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public BaseService(ILogger<BaseService<T>> logger)
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{
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this.logger = logger;
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}
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public virtual async Task<bool> AddRangeAsync(List<T> objs)
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{
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objs.ForEach(item => item.DateCreated = DateTimeOffset.UtcNow);
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try
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{
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await EntitySet.AddRangeAsync(objs);
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return true;
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}
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catch (Exception ex)
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{
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logger.LogError(ex, "Ошибка при добавлении диапазона в БД.");
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return false;
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}
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}
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public async Task<bool> CommitAsync(IHistoryInitiator? initiator = null)
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{
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#region Изменения
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var modifiedEntrities = EntitiContext.ChangeTracker.Entries()
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.Where(t => t.State == EntityState.Modified/* || t.State == EntityState.Deleted*/);
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foreach (var obj in modifiedEntrities)
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{
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// Если нунжо, обновляем дату изменения
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DateModifiedResolver(obj);
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//Если нужно, пишем историю
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TableHistoryResolver(obj);
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}
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#endregion
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SetInitiator(initiator);
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try
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{
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await EntitiContext.SaveChangesAsync();
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return true;
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}
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catch (Exception ex)
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{
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logger.LogError(ex, "Ошибка при Commit");
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return false;
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}
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}
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/// <summary>
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/// Установить инициатора
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/// </summary>
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/// <param name="initiator"></param>
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private void SetInitiator(IHistoryInitiator? initiator)
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{
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// Задаем инициатора только для новых и измененных записей
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var entrities = EntitiContext.ChangeTracker.Entries()
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.Where(t => t.State == EntityState.Modified || t.State == EntityState.Added);
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// смотрим есть ли у объекта интерфейс IHistoryInitiator, если есть, задаём значения
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foreach (var obj in entrities)
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{
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// для всех объектов которые наследуются от IHistoryInitiator и не являются наследниками IHistoryTable
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if (obj.Entity is IHistoryInitiator && obj.Entity is IHistoryTable == false)
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{
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(obj.Entity as IHistoryInitiator)!.InitiatorIp = initiator?.InitiatorIp ?? null;
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(obj.Entity as IHistoryInitiator)!.InitiatorParrComponentId = initiator?.InitiatorParrComponentId ?? null;
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(obj.Entity as IHistoryInitiator)!.InitiatorComment = initiator?.InitiatorComment ?? null;
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}
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}
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}
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/// <summary>
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/// Обновления DateModified у таблиц с IBase
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/// </summary>
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/// <param name="obj"></param>
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private void DateModifiedResolver(EntityEntry obj)
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{
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//if (obj.Entity is IBase)
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// (obj.Entity as IBase)!.DateModified = DateTimeOffset.UtcNow;
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if (obj.Entity is IBaseDateModified)
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(obj.Entity as IBaseDateModified)!.DateModified = DateTimeOffset.UtcNow;
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}
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/// <summary>
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/// При необходимости, записывать историю таблиц
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/// </summary>
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/// <param name="obj"></param>
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private void TableHistoryResolver(EntityEntry obj)
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{
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var myHistoryInterface = obj.Entity.GetType().GetInterfaces()
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.Where(t => t.IsGenericType)
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.Where(t => t.GetGenericTypeDefinition() == typeof(IMyHistory<>))
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.FirstOrDefault();
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// у этого объекта нет интерфейса IMyHistory<>. Не ведем историю
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if (myHistoryInterface == null)
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return;
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// !!! Эта таблица хочет хранить историю !!!
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// Получаем тип таблицы где хранится история
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var historyType = myHistoryInterface.GetGenericArguments().First();
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var historyProps = historyType.GetProperties(/*BindingFlags.DeclaredOnly | */ /*BindingFlags.Public*/).ToList();
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var historyInstance = Activator.CreateInstance(historyType);
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if (historyInstance == null)
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{
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logger.LogError($"Не смог создать инстанс для ведения истории {historyType.Name}");
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return;
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}
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// Заполняем поля истории, полями которые есть в исходной таблице
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FillHistoryProps(obj, ref historyInstance, historyProps);
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// Заполняем поля интерфейса IHistoryTable
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FillHistoryProp(ref historyInstance, nameof(IHistoryTable.DateAddedToHistory), DateTimeOffset.UtcNow);
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// Заполняем Id
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FillHistoryProp(ref historyInstance, nameof(IBase.Id), Guid.NewGuid());
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try
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{
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EntitiContext.Add(historyInstance);
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}
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catch (Exception ex)
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{
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logger.LogError(ex, $"Ошибка при добавлении объекта в историю {historyType.Name}");
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}
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}
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/// <summary>
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/// Заполнить объект истории
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/// </summary>
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/// <param name="originalObj"></param>
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/// <param name="historyInstance"></param>
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/// <param name="propsList"></param>
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private void FillHistoryProps(EntityEntry originalObj, ref object historyInstance, List<PropertyInfo> propsList)
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{
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foreach (var prop in propsList)
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{
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if (originalObj.OriginalValues.Properties.FirstOrDefault(t => t.Name == prop.Name) == null)
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continue;
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var sourceObjProp = originalObj.Property(prop.Name);
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if (sourceObjProp == null)
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return;
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//Смотрим, если это Id, записываем его в ParentId
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var histPropName = prop.Name == nameof(IBase.Id) ? nameof(IHistoryTable.ParentId) : prop.Name;
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var histProp = historyInstance.GetType().GetProperty(histPropName);
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if (histProp == null) continue;
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//сравним типы
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if (sourceObjProp.Metadata.PropertyInfo?.PropertyType != histProp.PropertyType)
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continue;
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var origValues = originalObj.Property(prop.Name).OriginalValue;
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histProp.SetValue(historyInstance, origValues);
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}
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}
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/// <summary>
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/// Заполнить поле объекта
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="instanceObj"></param>
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/// <param name="propName"></param>
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/// <param name="value"></param>
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private void FillHistoryProp<TValue>(ref object instanceObj, string propName, TValue value)
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{
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var histProp = instanceObj.GetType().GetProperty(propName);
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if (histProp == null)
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{
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logger.LogError($"При изменении объекта для БД, не найдено свойство ${propName}");
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return;
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}
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// сравним типы
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if (histProp.PropertyType != typeof(TValue))
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{
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logger.LogError($"При изменении объекта для БД, не совпадают типы у свойства {propName}, {histProp.PropertyType.Name}!={typeof(TValue).Name}");
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return;
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}
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histProp.SetValue(instanceObj, value);
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}
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#region test, comments
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//private void SaveHistory(EntityEntry obj)
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//{
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// // пока просто попробуем для шаблонов
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// if (obj.Entity is Template == false)
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// return;
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// var template = (Template)obj.Entity;
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// // https://stackoverflow.com/questions/15012621/how-to-get-original-entity-from-changetracker
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// var history = new TemplateHistory();
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// // {
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// history.Id = Guid.NewGuid();
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// history.ParentId = template.Id;
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// history.DateAddedToHistory = DateTimeOffset.UtcNow;
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// history.InitiatorIp = null;
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// history.InitiatorParrComponentId = null;
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// history.InitiatorComment = null;
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// //---
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// //DateModified="",
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// //Name ="",
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// //IsActiveTemplate = null,
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// //IsActiveSchedule = null,
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// //LastRun = null,
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// //NextRun = null
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// // DateModified = template.DateModified,
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// // Name = template.Name,
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// // IsActiveTemplate = template.IsActiveTemplate,
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// // IsActiveSchedule = template.IsActiveSchedule,
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// // LastRun = template.LastRun,
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// // NextRun = template.NextRun
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// //};
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// // obj.OriginalValues.GetValue
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// //ITemplateBase хочу получить все поля из интерфейса, потом заполнить по ним в хистори
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// var interfaceType = typeof(ITemplateGeneralProps);
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// foreach (var prop in interfaceType.GetProperties())
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// {
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// var propName = prop.Name;
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// //var propType = prop.PropertyType;
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// var originalPropValue = obj.OriginalValues.GetValue<object>(propName);
|
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|
|
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|
|
|
|
// var histProp = history.GetType().GetProperty(propName);
|
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|
|
|
|
// histProp.SetValue(histProp, originalPropValue);
|
|
|
|
|
|
// }
|
|
|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
// EntitiContext.Add(history);
|
|
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|
|
|
|
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|
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|
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|
|
//}
|
2024-10-07 16:20:04 +10:00
|
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|
#endregion
|
2024-10-07 15:08:46 +10:00
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|
|
|
|
|
|
|
|
|
2023-05-17 16:30:13 +10:00
|
|
|
|
public virtual async Task<bool> CreateAsync(T obj)
|
|
|
|
|
|
{
|
|
|
|
|
|
obj.DateCreated = DateTimeOffset.UtcNow;
|
|
|
|
|
|
|
|
|
|
|
|
try
|
|
|
|
|
|
{
|
|
|
|
|
|
await EntitySet.AddAsync(obj);
|
|
|
|
|
|
return true;
|
|
|
|
|
|
}
|
|
|
|
|
|
catch (Exception ex)
|
|
|
|
|
|
{
|
|
|
|
|
|
logger.LogError(ex, "Ошибка при добавлении в БД.");
|
|
|
|
|
|
return false;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
public virtual bool Delete(T obj)
|
|
|
|
|
|
{
|
|
|
|
|
|
try
|
|
|
|
|
|
{
|
|
|
|
|
|
EntitySet.Remove(obj);
|
|
|
|
|
|
return true;
|
|
|
|
|
|
}
|
|
|
|
|
|
catch (Exception ex)
|
|
|
|
|
|
{
|
|
|
|
|
|
logger.LogError(ex, "Ошибка при удалении из БД.");
|
|
|
|
|
|
return false;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
public virtual async Task<bool> DeleteAsync(Guid id)
|
|
|
|
|
|
{
|
|
|
|
|
|
try
|
|
|
|
|
|
{
|
|
|
|
|
|
var exist = await GetAsync(id);
|
|
|
|
|
|
if (exist == null)
|
|
|
|
|
|
{
|
|
|
|
|
|
logger.LogError($"Ошибка при удалении из БД. Не найдена запись в БД с id: {id}");
|
|
|
|
|
|
return false;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
EntitySet.Remove(exist);
|
|
|
|
|
|
return true;
|
|
|
|
|
|
}
|
|
|
|
|
|
catch (Exception ex)
|
|
|
|
|
|
{
|
|
|
|
|
|
logger.LogError(ex, "Ошибка при удалении из БД.");
|
|
|
|
|
|
return false;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
public virtual IQueryable<T> Get()
|
|
|
|
|
|
{
|
|
|
|
|
|
return EntitySet;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
public virtual async Task<T?> GetAsync(Guid id)
|
|
|
|
|
|
{
|
|
|
|
|
|
return await EntitySet.FirstOrDefaultAsync(t => t.Id == id);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
2023-06-16 15:00:11 +10:00
|
|
|
|
public virtual IQueryable<T> GetPage(IQueryable<T> query, PaginationFilter paginationFilter)
|
|
|
|
|
|
{
|
2024-03-12 15:31:03 +10:00
|
|
|
|
//if (paginationFilter.IsDisabledPagination)
|
|
|
|
|
|
// return query;
|
2024-03-12 15:09:12 +10:00
|
|
|
|
|
|
|
|
|
|
|
2023-06-16 15:00:11 +10:00
|
|
|
|
int skip = (paginationFilter.PageNumber - 1) * paginationFilter.PageSize;
|
2023-05-17 16:30:13 +10:00
|
|
|
|
|
2023-06-16 15:00:11 +10:00
|
|
|
|
return query.Skip(skip).Take(paginationFilter.PageSize);
|
|
|
|
|
|
}
|
2023-05-17 16:30:13 +10:00
|
|
|
|
}
|
|
|
|
|
|
}
|