NGram Analyzer in ElasticSearch

elastic_search_ngram_analyzer_for_urls.sh

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

curl -X DELETE localhost:9200/ngram_test
curl -X PUT    localhost:9200/ngram_test -d '
{
  "settings" : {
    "index" : {
      "analysis" : {
        "analyzer" : {
          "url_analyzer" : {
            "type" : "custom",
            "tokenizer" : "lowercase",
            "filter"    : ["stop", "url_stop", "url_ngram"]
          }
        },
        "filter" : {
          "url_stop" : {
            "type" : "stop",
            "stopwords" : ["http", "https"]
          },
          "url_ngram" : {
            "type" : "nGram",
            "min_gram" : 3,
            "max_gram" : 5
          }
        }
      }
    }
  },

  "mappings": {
    "url": {
      "properties": {
        "url": {
          "type": "string",
          "analyzer": "url_analyzer",
          "boost": 10
        }
      }
    }
  }
}
'

curl -X POST "http://localhost:9200/ngram_test/url" -d '{ "url" : "http://heise.de" }'
curl -X POST "http://localhost:9200/ngram_test/url" -d '{ "url" : "http://heisewetter.de" }'
curl -X POST "http://localhost:9200/ngram_test/url" -d '{ "url" : "http://eisenwerken.de" }'
curl -X POST "http://localhost:9200/ngram_test/url" -d '{ "url" : "http://eisenwerkenberlin.de" }'
curl -X POST "http://localhost:9200/ngram_test/url" -d '{ "url" : "http://urlaubinkroatien.de" }'
curl -X POST "http://localhost:9200/ngram_test/url" -d '{ "url" : "http://besteurlaubinkroatien.de" }'
curl -X POST "http://localhost:9200/ngram_test/url" -d '{ "url" : "http://kroatien.de" }'
curl -X POST "http://localhost:9200/ngram_test/_refresh"

# curl "http://localhost:9200/ngram_test/_analyze?text=http://heise.de&analyzer=url_analyzer"

URLS='
http://localhost:9200/ngram_test/_search?q=url:heise
http://localhost:9200/ngram_test/_search?q=url:eis
http://localhost:9200/ngram_test/_search?q=url:berlin
http://localhost:9200/ngram_test/_search?q=url:wetter
http://localhost:9200/ngram_test/_search?q=url:kroatien
http://localhost:9200/ngram_test/_search?q=url:(urlaub%20kroatien)
'

for url in ${URLS}
do
  echo; echo; echo ">>> ${url}"
  if which open &> /dev/null; then
    open "${url}&pretty=true"
  fi
    curl "${url}&pretty=true"
done