gistfile1.txt

#!/bin/bash

# Tested with elasticsearch version 6.1.3 
# Using ICU Analysis plugin, otherwise replace icu_tokenizer with thai in mapping part

# Delete the existed one
curl -XDELETE localhost:9200/test?pretty

# Put new mapping
curl -XPUT localhost:9200/test?pretty -H 'Content-Type: application/json' -d '{
  "settings": {
    "index": {
      "analysis": {
        "analyzer": {
          "analyzer_shingle": {
            "tokenizer": "icu_tokenizer",
            "filter": [
              "filter_shingle"
            ]
          }
        },
        "filter": {
          "filter_shingle": {
            "type": "shingle",
            "max_shingle_size": 3,
            "min_shingle_size": 2,
            "output_unigrams": "true"
          }
        }
      }
    }
  },
  "mappings": {
    "product": {
      "properties": {
        "content": {
          "analyzer": "analyzer_shingle",
          "type": "text"
        }
      }
    }
  }
}'

# Add some docs to the index
curl -H 'Content-Type: application/json' -XPOST localhost:9200/test/product/1?pretty -d '{"content" : "ฉันจะไปกินข้าวมันไก่"}'
curl -H 'Content-Type: application/json' -XPOST localhost:9200/test/product/2?pretty -d '{"content" : "ไก่ย่างถูกเผา มันจะถูกไม้เสียบ"}'
curl -H 'Content-Type: application/json' -XPOST localhost:9200/test/product/3?pretty -d '{"content" : "เสียบปีกซ้าย เสียบปีกขวา"}'

# Take some time before content can be search after post
sleep 4

# Analyze API to check out shingling
curl -H 'Content-Type: application/json' -XGET localhost:9200/test/_analyze?pretty -d '{ "analyzer": "analyzer_shingle", "text":"ข้าวมันไก่ ไก่ย่างถูกเผา"}' | grep "token"

# Check ranking from query with difference keyword
curl -H 'Content-Type: application/json' -XPOST localhost:9200/test/product/_search?pretty -d '{"query" : {"match" : {"content" : "มันไก่"}}}' | grep -E "content|score"
curl -H 'Content-Type: application/json' -XPOST localhost:9200/test/product/_search?pretty -d '{"query" : {"match" : {"content" : "ไก่มัน"}}}' | grep -E "content|score"
curl -H 'Content-Type: application/json' -XPOST localhost:9200/test/product/_search?pretty -d '{"query" : {"match" : {"content" : "ข้าวมันไก่"}}}' | grep -E "content|score"