Question

考虑这个breze查询：

return EntityQuery.from('myAPI')
  .noTracking(true)  
  .using(manager).execute()
  .then(querySucceeded)
  .fail(queryFailed);

我的API定义如下：

[HttpGet]
public object myAPI()
    {
      // var userId = get the users id from auth ticket
      var userPref = _contextProvider.Context.UserPreferences.Where(u => u.userId == userId);
      var userOptions = _contextProvider.Context.UserOptions.Where(u => u.userId == userId);
      return new
      {
          userPref,
          userOptions 
      };
   }

我知道我可以访问原始数据，这很棒。但除此之外，实体是在实体管理器中创建的，我希望它们不是。这适用于返回IQueryable的api。对于返回多个结果集的web apis，noTracking是否有不同的语法？

谢谢

Answer 1

我无法重现您描述的错误。我有a similar DocCode test that passes引用了Breeze v1.5.3。

以下是pertinent NorthwindController method：

    [HttpGet]
    public object Lookups()
    {
        var regions = _repository.Regions;
        var territories = _repository.Territories;
        var categories = _repository.Categories;

        var lookups = new { regions, territories, categories };
        return lookups;
    }

这是通过的QUnit测试：

  asyncTest('object query (e.g., lookups) w/ "no tracking" does not add to cache', function () {
    expect(2);
    var em = newNorthwindEm();
    EntityQuery.from('Lookups')
      .noTracking(true)
      .using(em).execute()
      .then(success).fail(handleFail).fin(start);

    function success(data) {
      var lookups = data.results[0];
      var hasLookups = lookups &&
                       lookups.categories && lookups.regions && lookups.territories;
      ok(hasLookups, 'Expected a lookups object w/ categories, regions and territories');

      var cached = em.getEntities();
      var len = cached.length;
      equal(0, len, 'Expected ZERO cached entities of any kind and got ' + len);
    }
  });

如果我注释掉noTracking(true)子句，测试失败并告诉我缓存中有65个实体......正如预测的那样。

我错过了什么？

breeze.js不尊重＆＃34; noTracking＆＃34; end point返回多个结果集时的选项

1 个答案: