Elasticsearch中的位数组使用和过滤 [英] Bit arrays usage and filtering in Elasticsearch

问题描述

我有一个数组。而且我想基于某些位是ON还是关闭来进行过滤。
看看Elasticsearch 2.3文档，我没有看到任何关于bitarrays的信息。

但是我似乎可以使用一个布尔阵列或一个二进制字段。

示例：
假设我有两个文档，每个都有一个位数组字段。 Doc1有011100，Doc2在该领域有00001。而且我想要通过011000进行过滤，在这种情况下，这只能给出Doc1。

任何想法如何在Elasticsearch中执行此操作？

谢谢你。

编辑：另一个想法：

如果我将位阵列变成许多Bool字段，然后它的作品。该文档可能看起来很丑，但它的作品。
基本上如果位数组是32位，那么我将有32个bool字段。这是实现这个的最好方法吗？

解决方案

如果可以将其更改为包含设置的位索引的数组。那就是 011100 将是 [1，2，3] 然后使用 / code>查询以执行或或必须查询和

示例：

  a）文档与111
 
 put test / test / 1 
 {
bit_position：[
 1，
 2，
 3 
] 
} 
 
b）文件与010 
 put test / test / 2 
 {
bit_position：[
 2 
] 
} 
 
c）or-ing with 101 
 
 post test / _search 
 {
query：{ 
条款：{
bit_position：[
 1，
 3 
] 
} 
} 
} 
  

I have a bit array. And I want to filter based on if certain bits are ON or OFF. Looking at the Elasticsearch 2.3 docs, I don't see anything about bitarrays.

But it seems I can use an Array of Booleans or a Binary field.

Example: Let's say I have 2 documents each with a bit array field. Doc1 has 011100 and Doc2 has 00001 in that field. And I want to filter by 011000 which in this case only gives Doc1.

Any ideas how to do this in Elasticsearch?

Thanks you.

Edit: Another idea:

If I turn the bit array into many Bool fields, then it works. The doc might look ugly but it works. Basically if the bit array is 32 bit, then I will have 32 bool fields. Is that the best way to implement this?

解决方案

if you could change it to an array containing the bit-index which are set. That is 011100 would be[ 1 , 2 ,3 ] and then use a terms query to do an or or a must query for and

Example :

a)  document with "111" 

put test/test/1
{
   "bit_position" : [
        1,
        2,
        3
    ]
}

b) document with 010
put test/test/2
{
   "bit_position": [
      2
   ]
}

c) or-ing with 101

post test/_search
{
    "query": {
        "terms": {
           "bit_position": [
              1,
              3
           ]
        }
    }
}

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