我目前正在试验ShareJS的operational transformation实现(特别是JSON API)。如果我删除了一个父JSON对象,并且另一个插入到子JSON中的操作,那么维基不清楚会发生什么。是重新创建父JSON,还是无操作?
E.g。
{"aa":
{"bb":
{"cc":"dd"}
}
}
//Operation A and B comes in carrying the same version number
//Op A deletes "aa", Op B modifies "cc"
//What happens? (assuming A comes in slightly earlier and is processed first)
答案 0 :(得分:1)
亲自检查一下:
op1 = [{p: ["aa"], od: {"bb": {"cc":"dd"}} }] // Deletes "aa"
op2 = [{p: ["aa", "bb", "cc"], od: "dd", oi: "ee"}] // Modifies "cc"
console.log(json.transform(op2, op1, 'left'))
>> []
这意味着,当op2在op1上转换时,它变为no-op - >不会重新创建任何对象。