Čeština v elasticsearch

gistfile1.sh

#!/bin/sh

# download
wget http://download.elasticsearch.org/elasticsearch/elasticsearch/elasticsearch-0.20.4.zip

# unzip and start
unzip elasticsearch-0.20.4.zip
cd elasticsearch-0.20.4
# remove data in case you have defined some analyzers in the past (e.g. stop/start)
rm -rf data/
./bin/elasticsearch

# give it some time to startup
sleep 10

# is it running?
curl localhost:9200

# Setup analyzers:
curl -X PUT localhost:9200/test -d '
{
  "settings" : {
    "analysis" : {
      "analyzer" : {
        "cestina1" : {
          "type": "czech"
        },
        "cestina2" : {
          "type" : "custom",
          "tokenizer" : "standard",
          "filter" : [ "standard", "lowercase", "czech_stemmer1" ]
        },
        "cestina3" : {
          "type" : "custom",
          "tokenizer" : "standard",
          "filter" : [ "standard", "lowercase", "czech_stemmer2" ]
        },
        "cestina4" : {
          "type" : "custom",
          "tokenizer" : "standard",
          "filter" : [ "standard", "lowercase", "czech_stop", "czech_stemmer2" ]
        }
      },
      "filter" : {
        "czech_stemmer1" : {
          "type" : "stemmer",
          "name" : "czech"
        },
        "czech_stemmer2" : {
          "type" : "czech_stem"
        },
        "czech_stop" : {
          "type" : "stop",
          "stopwords" : ["_czech_"]
        }
      }
    }
  }
}'

# Phrase: "Bankovní poplatky jsou nehorázné"

# cestina1: preconfigured czech analyzer
curl 'localhost:9200/test/_analyze?pretty=1&analyzer=cestina1&text=Bankovn%C3%AD%20poplatky%20jsou%20nehor%C3%A1zn%C3%A9'

# cestina2: custom analyzer using czech stemmer
curl 'localhost:9200/test/_analyze?pretty=1&analyzer=cestina2&text=Bankovn%C3%AD%20poplatky%20jsou%20nehor%C3%A1zn%C3%A9'

# cestina3: custom analyzer using czech stemmer (using a little shorter notation)
curl 'localhost:9200/test/_analyze?pretty=1&analyzer=cestina3&text=Bankovn%C3%AD%20poplatky%20jsou%20nehor%C3%A1zn%C3%A9'

# cestina4: Note both cestina2 and cestina3 did not exclude stop words. Let's add czech stopwords list.
# Note the custom analyzer is in fact the same to what is preconfigured in cestina1 under the hood.
curl 'localhost:9200/test/_analyze?pretty=1&analyzer=cestina4&text=Bankovn%C3%AD%20poplatky%20jsou%20nehor%C3%A1zn%C3%A9'