假设有已经存在的学生字典数组，学生有姓名和所在教室号，先查询符合条件的学校，便利学生字典数组，创建学生对象赋值姓名、学校和班级，但是班级需要先查询教室的位置来确定，这样就出现循环查询了？这样的问题该怎么解决呢？

var studentArr = new Array({'name': 'a','room':'101'},{'name': 'b','room':'102'},{'name': 'c','room':'103'},{'name': 'd','room':'104'});
var objects = new Array();
var schoolQuery = new AV.Query(Shcool);
schoolQuery.equalTo('name','**高中');
schoolQuery.find().then(function(schoolReuslts){
    for (var i = 0; i < studentArr.count; i ++){
        var student = studentArr[i];
        var object = new Student();

        object.set('name',student['name']);
        object.set('room',student['room']);
        object.set('school',schoolReuslts[0]);

        var classQuery = new AV.Query(Class);
        classQuery.equalTo('school',schoolReuslts[0]);
        classQuery.equalTo('room',student['room']);
        classQuery.find().then(function(classResults){
                object.set('class',classResults[0]);
                objects.push(object);
            }, function(error){
                console.log(error);
            });
        }
    return AV.Object.saveAll(objects);
}).then(function(objects){
    //全部保存成功    
}
}).catch(function(error) {
    console.log(error);