/// <summary>
/// 根据实体的状态，插入或更新实体对象。
/// </summary>
/// <param name="entity">要保存的实体对象。</param>
/// <returns>影响的实体数。</returns>
public int InsertOrUpdate(TEntity entity)
{
Guard.ArgumentNull(entity, nameof(entity));
var properties = PropertyUnity.GetPrimaryProperties(typeof(TEntity));
var isNew = entity.EntityState == EntityState.Attached;
if (isNew && properties.Any(s => !PropertyValue.IsEmptyOrDefault(entity.GetValue(s))))
{
var parExp = Expression.Parameter(typeof(TEntity), "s");
var equalExp = properties.Select(s => Expression.Equal(Expression.MakeMemberAccess(parExp, s.Info.ReflectionInfo), Expression.Constant(entity.GetValue(s)))).Aggregate(Expression.And);
var lambdaExp = Expression.Lambda <Func <TEntity, bool> >(equalExp, parExp);
isNew = !this.Any(lambdaExp);
}
if (options.NotifyEvents)
{
if (isNew)
{
return(EntityPersistentSubscribeManager.OnCreate(entity, () => repositoryProxy.Insert(entity)));
}
else
{
return(EntityPersistentSubscribeManager.OnUpdate(entity, () => repositoryProxy.Update(entity)));
}
}
return(isNew ? repositoryProxy.Insert(entity) : repositoryProxy.Update(entity));
}
/// <summary>
/// 异步的，根据实体的状态，插入或更新实体对象。
/// </summary>
/// <param name="entity">要保存的实体对象。</param>
/// <param name="cancellationToken">取消操作的通知。</param>
/// <returns>影响的实体数。</returns>
public async Task <int> InsertOrUpdateAsync(TEntity entity, CancellationToken cancellationToken = default)
{
Guard.ArgumentNull(entity, nameof(entity));
var properties = PropertyUnity.GetPrimaryProperties(typeof(TEntity));
var isNew = entity.EntityState == EntityState.Attached;
if (isNew && properties.Any(s => !PropertyValue.IsEmptyOrDefault(entity.GetValue(s))))
{
var parExp = Expression.Parameter(typeof(TEntity), "s");
var equalExp = properties.Select(s => Expression.Equal(Expression.MakeMemberAccess(parExp, s.Info.ReflectionInfo), Expression.Constant(entity.GetValue(s)))).Aggregate(Expression.And);
var lambdaExp = Expression.Lambda <Func <TEntity, bool> >(equalExp, parExp);
isNew = !this.Any(lambdaExp);
}
return(await(isNew ? InsertAsync(entity, cancellationToken) : UpdateAsync(entity, cancellationToken)));
}
