Question

我在将测试文档插入MongoDB时遇到了问题。

我正在使用JavaScripts创建我的测试文档，然后通过MongoDB Shell运行它们。但是我得到了一些意想不到的结果。

我的脚本使用以下树结构创建文档。

-Project
  -Task
    -Timesheet

当我尝试使用15个任务和50个时间表（createCollections("my project", 5, "my task", 15, 50, 100);）创建5个项目时，我只在数据库中获得2个完整（无错误）文档。当我尝试使用1个任务和5个时间表（createCollections("my project", 5, "my task", 1, 5, 100);）创建5个项目时，我只在数据库中获得4个完整（无错误）文档。相当奇怪。

我确定脚本会运行预期的迭代，因为我放置prints来验证插件是否实际运行。

输出（正如所料。）

before 0
after 0
before 1
after 1
before 2
after 2
before 3
after 3
before 4
after 4

脚本

db.test_embedded.drop();
db.createCollection("test_embedded");

var projectKey = 0;
var taskKey = 0;
var timesheetKey = 0;

Array.prototype.randomElement = function () {
    return this[Math.floor(Math.random() * this.length)]
}

function Iterator(array){
    var i = 0;
    this.array = array;
    this.length = array.length;

    this.next = next;
    function next() {
        return this.array[i++ % this.length];
    }
}

var userIds = new Array();
db.users.find({},{_id:1}).forEach(function (user) { userIds.push(user._id) });

var projectCollaboratorSlice = 0;
function project(title) {
    this._id = "project" + projectKey++;
    this.title = title;
    this.owner = userIds[0];
    this.collaboraters = userIds.slice(projectCollaboratorSlice++ % userIds.length + 1);
    this.tasks = new Array();
}

var taskCollaboratorSlice = 0;
function task(title) {
    this._id = "task" + taskKey++;
    this.title = title;
    this.owner = userIds[0];
    this.collaboraters = userIds.slice(taskCollaboratorSlice++ % userIds.length + 1);
    this.timesheets = new Array();
}

var timesheetUserIter = new Iterator(userIds);
function timesheet(duration) {
    this._id = "timesheet" + timesheetKey++;
    this.owner = timesheetUserIter.next();
    this.date = new Date(0);
    this.duration = duration;
}

function createTimesheets(num, duration) {
    var timesheets = new Array();
    for (k = 0; k < num; k++) {
        timesheets.push(new timesheet(duration));
    }
    return timesheets;
}

function createDoc(projectName, taskName, numTasks, numTimesheets, duration) {
    var newProject = new project(projectName);
    for (var i=0; i<numTasks; i++) {
        var newTask = new task(taskName + i);
        newTask.timesheets.push(createTimesheets(numTimesheets, duration));

        newProject.tasks.push(newTask);
    }

    return newProject;
}

function createCollections(projectName, projectCount, taskName, taskCount, timesheetCount, timesheetDuration){
    for (var p=0; p<projectCount; p++) {
        print("before" + p);
        db.test_embedded.insert(createDoc(projectName + p, taskName, taskCount, timesheetCount, timesheetDuration));
        print("after" + p);
    }
}
createCollections("my project", 5, "my task", 1, 5, 100);

这是我的脚本是原因还是有关于你可以通过脚本做多少的限制/错误？

使用mongodb shell脚本时，您可以处理多少限制？

脚本

0 个答案: