asynchronous - 使用 Promise 对 Google 表格进行多次查询

Question

我是一名初学者，希望在加快我的 Google 工作表查询速度方面得到一些帮助。我环顾四周，找不到解决方案。我正在尝试快速对 Google 工作表运行 25 个查询，这就是我尝试的方式：

1. 对 Google 工作表运行查询。
2. 将结果推送到数组。
3. 运行不同的查询。
4. 将结果推送到同一个数组。
5. 运行下一个查询... x 25。
6. 画出最终结果的表格。

问题是，如果我一项一项地运行查询，他们需要 25 秒才能完成。如果我在 for 循环中运行查询，结果会在 2 秒内返回，但是是异步的，并且数据完全不正常。也许，我应该使用一个承诺，或者别的什么。请你帮忙。

这是慢版本的代码：

   var resultData;
var allData = [];
var i = 0;

function startQuery() {
  i = 0;
  allData.length = 0;
  runOnecode();
}

function runOnecode() {
  var str  = "";
  str += $(".google-visualization-controls-rangefilter-thumblabel").text();
  var until = str.substring(10);
  var from = str.substring(0,10);
  var center = $("#centerSelect option:selected").text();
  var query = [
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND G =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND H =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND I =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND J =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND K =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND N =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND O =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND P =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND Q =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND R =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND S =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND T =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND U =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND V =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND W =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND X =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND Y =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND Z =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND AA =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND AB =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND AC =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND AD =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND AE =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND AF =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND AG =\"No\" ")
  ];

  getData(query[i]);
}
</script>
<script>
function getData(incomingQuery) {

  // Prepare the query 
  var queryString = encodeURIComponent(incomingQuery);
  var query = new google.visualization.Query(
    //Collect the data from this spreadsheet
  'MySpreadSheet URL' + queryString);
  query.send(handleSampleDataQueryResponse);

  //Handle any errors from the Google server
  function handleSampleDataQueryResponse(response) {
    if (response.isError()) {
      alert('Error in query: ' + response.getMessage() + ' ' +
        response.getDetailedMessage());
      return;
    }

    // get look into the resulting data and find the detail.     
    var datas = response.getDataTable();
    if (datas.Gf.length === 0) {
      resultData = 0;
    } else resultData = datas.Gf[0].c[0].v;

    allData.push(resultData);
    //     console.log(allData);

    if (i < 25) {
      runOnecode();

    } else {
      drawTable();
    }
    i++;
  }

}
</script>

这是异步返回结果的快速版本：

<script>
function runOnecode() {
  var str  = "";
  str += $(".google-visualization-controls-rangefilter-thumblabel").text();
  var until = str.substring(10);
  var from = str.substring(0,10);
  var center = $("#centerSelect option:selected").text();
  var query = [
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND G =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND H =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND I =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND J =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND K =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND N =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND O =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND P =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND Q =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND R =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND S =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND T =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND U =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND V =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND W =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND X =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND Y =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND Z =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND AA =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND AB =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND AC =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND AD =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND AE =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND AF =\"No\" "),
    ("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A)  >=date \'" + from + "\' AND todate(A)  <=date \'" + until + "\' AND AG =\"No\" ")
  ];
for(var i=0; i<25; i++){
  getData(query[i]);
// When all are done I will draw the table. 

}
}
</script>
<script>
function getData(incomingQuery) {

  // Prepare the query 
  var queryString = encodeURIComponent(incomingQuery);
  var query = new google.visualization.Query(
    //Collect the data from this spreadsheet
    'MySpreadSheet URL' + queryString);
  query.send(handleSampleDataQueryResponse);

  //Handle any errors from the Google server
  function handleSampleDataQueryResponse(response) {
  if (response.isError()) {
      alert('Error in query: ' + response.getMessage() + ' ' +
       response.getDetailedMessage());
      return;
    }

    // get look into the resulting data and find the detail.     
    var datas = response.getDataTable();
    console.log(datas);
    if (datas.Gf.length === 0) {
      resultData = 0;
    } else resultData = datas.Gf[0].c[0].v;

    allData.push(resultData);
      console.log(allData);
  }

}
</script>

Answer 1

使用承诺，你可以做到这一点

function runOnecode() {
    var str  = "";
    str += $(".google-visualization-controls-rangefilter-thumblabel").text();
    var until = str.substring(10);
    var from = str.substring(0,10);
    var center = $("#centerSelect option:selected").text();
    var query = [
        // your query data, removed for brevity ...
    ];
    Promise.all(query.map(getData))
    .then(function(results) {
        // results is an array of results in the same order as query
    })
    .catch(function(err) {
        // err is FIRST error - no other information about success/faill of other queries will be available
    });
}

function getData(incomingQuery) {
    return new Promise(function(fulfill, reject) {
        // Prepare the query 
        var queryString = encodeURIComponent(incomingQuery);
        var query = new google.visualization.Query(
            //Collect the data from this spreadsheet
            'MySpreadSheet URL' + queryString);
        query.send(handleSampleDataQueryResponse);

        //Handle any errors from the Google server
        function handleSampleDataQueryResponse(response) {
            if (response.isError()) {
                throw('Error in query: ' + response.getMessage() + ' ' + response.getDetailedMessage());
            }

            // get look into the resulting data and find the detail.     
            var datas = response.getDataTable();
            console.log(datas);
            if (datas.Gf.length === 0) {
                resultData = 0;
            } else {
                resultData = datas.Gf[0].c[0].v;
            }
            fulfill(resultData);
        }
    });
}

如果您需要获取所有查询成功/失败的状态，您可以使用类似 Q Promise 的东西，它有一个 allSettled 方法（而不是 Promise.all），它返回所有 Promise 的结果，而不管成功/失败

或者，这是我自己卷的一个

Promise.allSettled = function(arr) { 
    return Promise.all([].map.call(arr, 
        function(v) {
            return Promise.resolve(v).then(
                function fulfilled (x) { return {fulfilled: true,  value: x}; }, 
                function rejected  (e) { return {fulfilled: false, value: e}; }
            );
        })
    );
};

runOnecode然后看起来像

function runOnecode() {
    var str  = "";
    str += $(".google-visualization-controls-rangefilter-thumblabel").text();
    var until = str.substring(10);
    var from = str.substring(0,10);
    var center = $("#centerSelect option:selected").text();
    var query = [
        // your query data, removed for brevity ...
    ];
    Promise.allSettled(query.map(getData))
    .then(function(results) {
        // results is an array of results in the same order as query
        results.forEach(function(result) {
            if (result.fulfilled) {
                // successful
                console.log(result.value);
            }
            else {
                // unsuccessful
                console.log(result.value); // will show the thrown error
            }
        });
    });
}