是否有(大致)SQL或类似xquery的语言来查询JSON?
我正在考虑非常小的数据集，很好地映射到JSON，它将很容易回答查询，如“X的所有值是什么，Y > 3”或做通常的SUM / COUNT类型操作。
作为一个完全虚构的例子，是这样的:
[{"x": 2, "y": 0}}, {"x": 3, "y": 1}, {"x": 4, "y": 1}]
SUM(X) WHERE Y > 0 (would equate to 7)
LIST(X) WHERE Y > 0 (would equate to [3,4])
我认为这将在客户端和服务器端工作，结果将被转换为适当的特定于语言的数据结构(或者可能保留为JSON)
快速搜索一下谷歌，就会发现人们已经考虑过它并实现了一些东西(JAQL)，但它似乎还没有一个标准的用法或库集出现。虽然单独实现每个功能都是相当琐碎的，但如果有人已经做对了，我就不想重新发明轮子。
有什么建议吗?
Edit: This may indeed be a bad idea or JSON may be too generic a format for what I'm thinking.. The reason for wanting a query language instead of just doing the summing/etc functions directly as needed is that I hope to build the queries dynamically based on user-input. Kinda like the argument that "we don't need SQL, we can just write the functions we need". Eventually that either gets out of hand or you end up writing your own version of SQL as you push it further and further. (Okay, I know that is a bit of a silly argument, but you get the idea..)
我推荐我正在做的项目jLinq。我在寻求反馈，所以我很有兴趣听听你的想法。
如果让你写查询类似于你会在LINQ…
var results = jLinq.from(records.users)
//you can join records
.join(records.locations, "location", "locationId", "id")
//write queries on the data
.startsWith("firstname", "j")
.or("k") //automatically remembers field and command names
//even query joined items
.equals("location.state", "TX")
//and even do custom selections
.select(function(rec) {
return {
fullname : rec.firstname + " " + rec.lastname,
city : rec.location.city,
ageInTenYears : (rec.age + 10)
};
});
它也是完全可扩展的!
文档仍在编写中，但您仍然可以在线尝试。
我推荐我正在做的项目jLinq。我在寻求反馈，所以我很有兴趣听听你的想法。
如果让你写查询类似于你会在LINQ…
var results = jLinq.from(records.users)
//you can join records
.join(records.locations, "location", "locationId", "id")
//write queries on the data
.startsWith("firstname", "j")
.or("k") //automatically remembers field and command names
//even query joined items
.equals("location.state", "TX")
//and even do custom selections
.select(function(rec) {
return {
fullname : rec.firstname + " " + rec.lastname,
city : rec.location.city,
ageInTenYears : (rec.age + 10)
};
});
它也是完全可扩展的!
文档仍在编写中，但您仍然可以在线尝试。
