javascript - 错误：ItemFileWriteStore 中的断言失败

Question

我dojo.data.ItemFileWriteStore用作网格的存储。当我尝试使用store.newItem()方法将数据添加到存储时，出现以下错误。

“错误：ItemFileWriteStore 中的断言失败”。

谁能帮助我为什么会收到此错误？

请找到代码片段：

   var tabledata={identifier:"TimeStamp",items:[]};
   var store=new dojo.data.ItemFileWriteStore({data:tabledata});

   var data=xhrpost();
   //data contains
// {"TimeStamp":"2011/12/07 04:37:29 ","UserName":" root ","Command":" ppm restart"}| //{"TimeStamp":"2011/12/07 05:02:14 ","UserName":" root ","Command":" ppm restart"}|
//{"TimeStamp":"2011/12/07 05:33:01 ","UserName":" root ","Command":" ppm restart"}|
//{"TimeStamp":"2011/12/07 06:18:17 ","UserName":" root ","Command":" ppm restart"}

    var arrdata=data.spilt("|");
   for(var i=0;i<arrdata.length;i++)
   {
   //i am getting ajax response as text so i am converting to json
   var row=dojo.fromJson(data[i]);
    store.newItem(row);
  }