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我有我的MongoDB集合看起来像文件：更新文件，通过使用JavaScript函数
{
"gran": "Day",
"dix": NumberInt(80),
"y": NumberInt(2017),
},
{
"gran": "Month",
"dix": NumberInt(3),
"y": NumberInt(2017),
}
我要添加到这些文档的从/到场，因此他们希望像：
{
"gran": "Day",
"dix": NumberInt(80),
"y": NumberInt(2017),
"from": ISODate("2017-03-21T00:00:00.000+0000"),
"to": ISODate("2017-03-21T23:59:59.000+0000")
},
{
"gran": "Month",
"dix": NumberInt(3),
"y": NumberInt(2017),
"from": ISODate("2017-03-01T00:00:00.000+0000"),
"to": ISODate("2017-03-31T23:59:59.000+0000")
}
我写了一个JavaScript函数，它把来自粒度到日期：
function(year, index, gran) {
var fromToDates = {};
if (gran === "Day") {
var initDate = new Date(year, 0); // initialize a date in `year-01-01`
var currentDate = new Date(initDate.setDate(index)); // add the number of days
var dateFrom = new Date(currentDate.getFullYear(), currentDate.getMonth(), currentDate.getDate(), 0, 0, 0);
var dateTo = new Date(currentDate.getFullYear(), currentDate.getMonth(), currentDate.getDate(), 23, 59, 59);
fromToDates.from = dateFrom;
fromToDates.to = dateTo;
return fromToDates;
} else if (gran === "Week") {
var simple = new Date(year, 0, 1 + (index - 1) * 7);
var dow = simple.getDay();
print(dow);
var dateFrom = simple;
if (dow <= 4)
dateFrom.setDate(simple.getDate() - simple.getDay() + 1);
else
dateFrom.setDate(simple.getDate() + 8 - simple.getDay());
var dateTo = new Date(dateFrom);
dateTo.setDate(dateTo.getDate() + 6);
dateTo.setUTCHours(23);
dateTo.setUTCMinutes(59);
dateTo.setUTCSeconds(59);
fromToDates.from = dateFrom;
fromToDates.to = dateTo;
return fromToDates;
} else if (gran === "Month") {
var monthIndex = index - 1;
var initDate = new Date(year, monthIndex);
var dateFrom = new Date(initDate.getFullYear(), monthIndex, 1, 0, 0, 0);
var lastDayOfMonth = monthIndex + 1;
var dateTo = new Date(dateFrom.getFullYear(), lastDayOfMonth, 0, 23, 59, 59);
fromToDates.from = dateFrom;
fromToDates.to = dateTom;
return fromToDates;
} else if (gran === "Quarter") {
var dateFrom = new Date(year,index*3-3,1);
var dateTo = new Date(year,index*3,0, 23, 59, 59);
fromToDates.from = dateFrom;
fromToDates.to = dateTo;
return fromToDates;
}
else if (gran === "Year") {
var dateFrom = new Date(year, 0, 1, 0,0,0);
var dateTo = new Date(year, 11, 31, 23, 59, 59);
fromToDates.from = dateFrom;
fromToDates.to = dateTo;
return fromToDates;
}
}
对于来自/加入这两个领域到我想我可以用这个方法：
db.reports.findAndModify({
query: { "from": {$exists: false}},
update: {
$set: {
"from": new Date(),
"to": new Date()
}
},
multi: true
})
然后我读身边，我可以这样做：
db.reports.aggregate([
{
$match:
{
}
}
]).map(function(doc) {
var dates = dateIndexToDateWithFromTo(doc.y, doc.dix, doc.gran);
doc['from'] = dates.from;
doc['to'] = dates.to;
return doc;
})
但这是不是真的工作。它会返回正确的日期，但当然不会在集合中更新它们。任何人都知道如何使用我写的脚本动态更新我的文档？
我使用的是mongodb版本3.2，因此对于每个人都会建议在汇总管道中使用$ addFields，这是不可能的，因为我现在无法更新到3.4。