MongoDB和Perl:维护插入顺序

Question

我一直在愚弄Perl MongoDB库,并且很难弄清楚如何做一些非常简单的事情.

如何在插入时维护数据字段的顺序？我的代码如下:

use MongoDB;
use MongoDB::Database;
use MongoDB::OID;


my $conn = MongoDB::Connection->new;
my $db = $conn->test;
my $users = $db->testlogwiki;


$users->insert
(
   {
     "product" => "WooHoo",
     "errcode" => "WM2001_89873",
     "solution1" => "Hit the computer.",
     "line_text" => "Inserted in Perl too"
   }
);

当我回过头来查看我的MongoDB中如何插入记录时,它看起来像这样:

db.testlogwiki.find([找到它的条件]).pretty();

"_id" : ObjectId("4fc62c2900ece6040c000000"),
"solution1" : "Hit the computer.",
"product" : "WooHoo",
"errcode" : "WM2001_89873",
"line_text" : "Inserted in Perl too"

这不是我想要的订单......我怎么做它我想要的订单？

Answer 1

根据定义,Perl和Mongo的BSON哈希值都是无序的.如果您需要以某种方式订购物业,您必须自己跟踪它.