Question

使用带有Node.js后端的Azure移动应用程序。我把一切都搞定了，有点儿。设置离线同步后，大约需要8分钟才能同步30秒。调试应用程序后，我发现客户端的一切都很好用。查看网站上的日志，我看到反复运行的“读取脚本”。它每秒都会运行读取脚本，直到它最终完成。

预计会出现这种情况吗？

在等待LocalCards.PullAsync

时挂起在SyncAsync（）中

阅读脚本

var table = module.exports = require('azure-mobile-apps').table();

table.read(function (context) 
{
 console.log('Attempting table read');
 return context.execute();
 });

应用代码

private async Task InitLocalStoreAsync()
     {
        if (!App.MobileService.SyncContext.IsInitialized)
        {
            var store = new MobileServiceSQLiteStore("localsync32.db");
            store.DefineTable<Nname>();
            await App.MobileService.SyncContext.InitializeAsync(store);
        }

        await SyncAsync();
        await RefreshNcards();
    }
private async Task SyncAsync()
    {
        String errorString = null;
        string unique = DateTime.Now.Ticks.ToString() + DateTime.UtcNow.TimeOfDay.ToString();
        try
        {
            await LocalCards.PullAsync("Nnames "+unique,LocalCards.CreateQuery()); // first param is query ID, used for incremental sync
        }

        catch (Exception ex)
        {
            errorString = "Pull failed: " + ex.Message +
              "\n\nIf you are still in an offline scenario, " +
              "you can try your Pull again when connected with your Mobile Serice.";
        }

        if (errorString != null)
        {
            MessageDialog d = new MessageDialog(errorString);
            await d.ShowAsync();
        }
    }

Answer 1

显然，PullAsync（）命令将查询结果限制为每次50次。所以在我的代码中，我一次只能拉50个项目。要修复我添加了一个最大页面大小的拉动选项Param：

    private async Task SyncAsync()
    {
        String errorString = null;
        PullOptions pageSize = new PullOptions { MaxPageSize =1000 };

        try
        {
            await LocalCards.PullAsync("Nname",LocalCards.CreateQuery(), pullOptions: pageSize); // first param is query ID, used for incremental sync
        }

        catch (Exception ex)
        {
            errorString = "Pull failed: " + ex.Message +
              "\n\nIf you are still in an offline scenario, " +
              "you can try your Pull again when connected with your Mobile Serice.";
        }

        if (errorString != null)
        {
            MessageDialog d = new MessageDialog(errorString);
            await d.ShowAsync();
        }
    }

Azure脱机同步重复查询

1 个答案: