elastic_search_stemming_test.rb

require 'rubygems'
require 'net/http'
require 'yaml'
require 'json'

# kill the index
delete = Net::HTTP::Delete.new("/test")

# create again
create_index = Net::HTTP::Post.new("/test")
create_index.body = {
  'settings' => {
    'analysis' => {
      'analyzer' => {
        'myAnalyzer' => {
          'type'   => 'custom',
          'tokenizer' => 'standard',
          'filter' => ['standard', 'lowercase', 'porterStem']
        }
      }
    }
  }
}.to_yaml

# and use myAnalyzer in the below code

# index a record
index_record = Net::HTTP::Put.new("/test/foo/1")
index_record.body = {"text" => "i like to go for a walk"}.to_json

# do a search which requires stemming to succeed
search = Net::HTTP::Get.new("/test/_search?pretty=true&q=walking")

# perform requests
Net::HTTP.start("localhost", 9200) do |http|
  [delete, create_index, index_record, search].each do |request|
    puts http.request(request)
  end
end