使用字符串为Elasticsearch构建查询DSL

Question

I'm using Meteor (so Javascript, Node, NPM, etc) and would like to provide a simple text input for users to search via Elasticsearch. I would like to be able to use modifiers on the text like + and "" and search for a specific field. I'm looking for something that can convert a plain text input into Elasticsearch Query DSL.

These would be some example queries:

This query would mean that the keyword "tatooine" must exist:

stormtrooper +tatooine

This would mean that "death star" should be one keyword:

stormtrooper "death star"

This would search for the keyword "bloopers" only in the category field:

stormtrooper category=bloopers

Is there a library that can do this? Can a generic solution exist or is this why I can't find any existing answers to this?

Answer 1

simple_query_string would support your query syntax out of the box, except for category=bloopers which should be category:bloopers instead, but otherwise it should work:

curl -XPOST localhost:9200/your_index/_search -d '{
  "query": {
    "simple_query_string": {
      "query": "stormtrooper category:bloopers"
    }
  }
}'

curl -XPOST localhost:9200/your_index/_search -d '{
  "query": {
    "simple_query_string": {
      "query": "stormtrooper +tatooine"
    }
  }
}'

You can also send the query in the query string directly like this:

curl -XPOST localhost:9200/your_index/_search?q=stormtrooper%20%22death%20star%22"