CODEWITHSUNDEEP
elasticsearch
Tushar Roy
Tushar Roy

Reputation: 239

Searching data in Elastic Search

I am trying to implement elastic search into my application. Currently i have a scenario where i need to search based on some search value. Here is my implementation
Mapping

PUT /freelancer_working_days
{
  "mappings":{
    "properties":{
      "id": {"type": "text"},
      "freelancer_id": {"type": "text"},
      "working_days": {"type": "text"}, 
      "working_time": {"type":"keyword"}
    }
  }
}

A Document that i inserted

PUT /freelancer_working_days/_doc/1
{
  "id": "1",
  "freelancer_id":"abc-215-aysg-uyt-",
  "working_days":"{{\"days\":[1,4,3,5,7],\"time\":{\"to\":7,\"from\":12}}",
  "working_time":"{\"1\":{\"to\":7,\"from\":12},\"3\":{\"to\":7,\"from\":12},\"4\":{\"to\":7,\"from\":12},\"5\":{\"to\":7,\"from\":12},\"7\":{\"to\":7,\"from\":12}}"
}

Now what am i trying to get is that based on working time i get this document back so i am trying this but it gives me 0 hits. What am i doing wrong?

GET /freelancer_working_days/_search
{
  "query": {
    "term": {
      "working_time": "12"
    }
  }
}

If i analyze with default values like this

GET /freelancer_working_days/_analyze
{
  "text": ["{\"1\":{\"to\":7,\"from\":12},\"3\":{\"to\":7,\"from\":12},\"4\":{\"to\":7,\"from\":12},\"5\":{\"to\":7,\"from\":12},\"7\":{\"to\":7,\"from\":12}}"],
}

I get tokens like :

{
  "tokens" : [
    {
      "token" : "1",
      "start_offset" : 2,
      "end_offset" : 3,
      "type" : "<NUM>",
      "position" : 0
    },
    {
      "token" : "to",
      "start_offset" : 7,
      "end_offset" : 9,
      "type" : "<ALPHANUM>",
      "position" : 1
    },
    {
      "token" : "7",
      "start_offset" : 11,
      "end_offset" : 12,
      "type" : "<NUM>",
      "position" : 2
    },
    ...
    {
      "token" : "12",
      "start_offset" : 112,
      "end_offset" : 114,
      "type" : "<NUM>",
      "position" : 24
    }
  ]

Upvotes: 0

Views: 51

Answers (1)

ThangLeQuoc
ThangLeQuoc

Reputation: 3158

Your working_time field is defined with type keyword, and the keyword analyzer is a noop analyzer, which mean your entire working_time string

{"1":{"to":7,"from":12},"3":{"to":7,"from":12},"4":{"to":7,"from":12},"5":{"to":7,"from":12},"7":{"to":7,"from":12}}

has been indexed as a single token string, and that's reason why your term query with value "12" does not match with it.

Testing it with the _analyze API on your freelancer_working_days index

GET /freelancer_working_days/_analyze
{
  "field": "working_time",
  "text": "{\"1\":{\"to\":7,\"from\":12},\"3\":{\"to\":7,\"from\":12},\"4\":{\"to\":7,\"from\":12},\"5\":{\"to\":7,\"from\":12},\"7\":{\"to\":7,\"from\":12}}"
}

will give

{
  "tokens" : [
    {
      "token" : """{"1":{"to":7,"from":12},"3":{"to":7,"from":12},"4":{"to":7,"from":12},"5":{"to":7,"from":12},"7":{"to":7,"from":12}}""",
      "start_offset" : 0,
      "end_offset" : 116,
      "type" : "word",
      "position" : 0
    }
  ]
}

Reference: Keyword analyzer

If you need a full text search, consider to change the type of working_time field to text

Upvotes: 1

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