OpenSearch/rest-api-spec
Alan Woodward dd540ef618
Use index-prefix fields for terms of length min_chars - 1 (#36703)
The default index_prefix settings will index prefixes of between 2 and 5 characters in length. 
Currently, if a prefix search falls outside of this range at either end we fall back to a standard prefix 
expansion, which is still very expensive for single character prefixes. However, we have an option 
here to use a wildcard expansion rather than a prefix expansion, so that a query of a* gets remapped 
to a? against the _index_prefix field - likely to be a very small set of terms, and certain to be much
smaller than a* against the whole index.

This commit adds this extra level of mapping for any prefix term whose length is one less than
the min_chars parameter of the index_prefixes field.
2018-12-19 08:55:05 +00:00
..
src/main/resources/rest-api-spec Use index-prefix fields for terms of length min_chars - 1 (#36703) 2018-12-19 08:55:05 +00:00
.gitignore
README.markdown Remove reference to utils for generating REST docs 2016-03-30 13:36:51 +02:00
build.gradle Converting randomized testing to create a separate unitTest task instead of replacing the builtin test task (#36311) 2018-12-19 08:25:20 +02:00

README.markdown

Elasticsearch REST API JSON specification

This repository contains a collection of JSON files which describe the Elasticsearch HTTP API.

Their purpose is to formalize and standardize the API, to facilitate development of libraries and integrations.

Example for the "Create Index" API:

{
  "indices.create": {
    "documentation": "http://www.elastic.co/guide/en/elasticsearch/reference/master/indices-create-index.html",
    "methods": ["PUT", "POST"],
    "url": {
      "path": "/{index}",
      "paths": ["/{index}"],
      "parts": {
        "index": {
          "type" : "string",
          "required" : true,
          "description" : "The name of the index"
        }
      },
      "params": {
        "timeout": {
          "type" : "time",
          "description" : "Explicit operation timeout"
        }
      }
    },
    "body": {
      "description" : "The configuration for the index (`settings` and `mappings`)"
    }
  }
}

The specification contains:

  • The name of the API (indices.create), which usually corresponds to the client calls
  • Link to the documentation at http://elastic.co
  • List of HTTP methods for the endpoint
  • URL specification: path, parts, parameters
  • Whether body is allowed for the endpoint or not and its description

The methods and url.paths elements list all possible HTTP methods and URLs for the endpoint; it is the responsibility of the developer to use this information for a sensible API on the target platform.

License

This software is licensed under the Apache License, version 2 ("ALv2").