Demonstrates two unwanted results with current elasticsearch setup.

ngram_test.sh

# ========================================
# Testing n-gram analysis in ElasticSearch
# ========================================

curl -X DELETE localhost:9200/courses
curl -X POST http://localhost:9200/courses -d '{
  "mappings":{
    "course":{
      "properties":{
        "name":{
          "type":"string",
          "index_analyzer":"autocomplete_analyzer",
          "search_analyzer":"keyword"
        }
      }
    }
  },
  "settings":{
    "number_of_shards":1,
    "number_of_replicas":1,
    "analysis":{
      "filter":{
        "autocomplete_edgeNGram":{
          "type":"edgeNGram",
          "min_gram":2,
          "max_gram":10,
          "side":"front"
        },
        "word_filter":{
          "type":"word_delimiter",
          "generate_word_parts":false,
          "generate_number_parts":false,
          "split_on_numerics":false,
          "split_on_case_change":false,
          "preserve_original":true
        }
      },
      "analyzer":{
        "autocomplete_analyzer":{
          "tokenizer":"standard",
          "filter":[
            "asciifolding",
            "lowercase",
            "word_filter",
            "autocomplete_edgeNGram"
          ],
          "type":"custom"
        }
      }
    }
  }}'

# Test basic ngram functionality, gets correct course
curl -X GET 'http://localhost:9200/courses/course/_search?load=true&size=10&pretty' -d '{
  "query":{
    "query_string":{
      "query":"merc",
      "fields":[
        "name"
      ]
    }
  },
  "size":4}'

# Test with full keyword, gets correct course
curl -X GET 'http://localhost:9200/courses/course/_search?load=true&size=10&pretty' -d '{
  "query":{
    "query_string":{
      "query":"merc",
      "fields":[
        "name"
      ]
    }
  },
  "size":4}'

# Test with full subject without hypen, gets correct course
curl -X GET 'http://localhost:9200/courses/course/_search?load=true&size=10&pretty' -d '{
  "query":{
    "query_string":{
      "query":"mercedes benz",
      "fields":[
        "name"
      ]
    }
  },
  "size":4}'


# Test with full subject without hyphenated, FAILS to gets correct course (No results)
curl -X GET 'http://localhost:9200/courses/course/_search?load=true&size=10&pretty' -d '{
  "query":{
    "query_string":{
      "query":"mercedes-benz",
      "fields":[
        "name"
      ]
    }
  },
  "size":4}'

# {
#   "took" : 1,
#   "timed_out" : false,
#   "_shards" : {
#     "total" : 1,
#     "successful" : 1,
#     "failed" : 0
#   },
#   "hits" : {
#     "total" : 0,
#     "max_score" : null,
#     "hits" : [ ]
#   }
# }%

# Test with full subject without hyphenated, Gets extra unwanted result
curl -X GET 'http://localhost:9200/courses/course/_search?load=true&size=10&pretty' -d '{
  "query":{
    "query_string":{
      "query":"mercedes-benz",
      "fields":[
        "name"
      ]
    }
  },
  "size":4}'

# {
#   "took" : 1,
#   "timed_out" : false,
#   "_shards" : {
#     "total" : 1,
#     "successful" : 1,
#     "failed" : 0
#   },
#   "hits" : {
#     "total" : 2,
#     "max_score" : 0.3592204,
#     "hits" : [ {
#       "_index" : "courses",
#       "_type" : "course",
#       "_id" : "7",
#       "_score" : 0.3592204, "_source" : {"name":"Mercedes-Benz Driving School"}
#     }, {
#       "_index" : "courses",
#       "_type" : "course",
#       "_id" : "13",
#       "_score" : 0.3592204, "_source" : {"name":"Being Cool With Bond, James Bond"}
#     } ]
#   }
# }%

curl -X POST "http://localhost:9200/courses/_refresh"