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Simple example how to use elastic search with node.js using standard and ngram tokenizer
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'use strict'; | |
var elasticsearch = require('elasticsearch'); | |
var log = console.log.bind(console); | |
var client = new elasticsearch.Client({ | |
host: 'localhost:9200', | |
log: 'trace' | |
}); | |
function dropIndex() { | |
return client.indices.delete({ | |
index: 'test', | |
}); | |
} | |
function dropNgIndex() { | |
return client.indices.delete({ | |
index: 'ngind', | |
}); | |
} | |
function createIndex() { | |
return client.indices.create({ | |
index: 'test', | |
mapping: { | |
house: { | |
name: { | |
type: 'string' | |
} | |
} | |
} | |
}); | |
} | |
function createNgIndex() { | |
var settings = { | |
"analysis": { | |
"tokenizer": { | |
"my_ngram_tokenizer": { | |
"type": "nGram", | |
"min_gram": "2", | |
"max_gram": "3", | |
"token_chars": ["letter", "digit"] | |
} | |
}, | |
"analyzer": { | |
"my_ngram_analyzer": { | |
"tokenizer": "my_ngram_tokenizer", | |
"type": "custom" | |
} | |
} | |
} | |
}; | |
var mapping = { | |
"house": { | |
"properties": { | |
"name": { | |
"type": "string", | |
"term_vector": "yes", | |
"analyzer": "my_ngram_analyzer" | |
} | |
} | |
} | |
}; | |
return client.indices.create({ | |
index: 'ngind', | |
body: { | |
settings: settings, | |
mappings: mapping | |
} | |
}); | |
} | |
function addToIndex() { | |
return client.index({ | |
index: 'test', | |
type: 'house', | |
id: '1', | |
body: { | |
name: 'huhu' | |
} | |
}); | |
} | |
function addToNgIndex() { | |
return client.index({ | |
index: 'ngind', | |
type: 'house', | |
id: '1', | |
body: { | |
name: 'huhu' | |
} | |
}); | |
} | |
function search() { | |
return client.search({ | |
index: 'test', | |
q: 'huhu' | |
}).then(log); | |
} | |
function searchNg() { | |
return client.search({ | |
index: 'ngind', | |
q: 'huhu' | |
}).then(log); | |
} | |
function closeConnection() { | |
client.close(); | |
} | |
function getFromIndex() { | |
return client.get({ | |
id: 1, | |
index: 'test', | |
type: 'house', | |
}).then(log); | |
} | |
function getFromNgIndex() { | |
return client.get({ | |
id: 1, | |
index: 'ngind', | |
type: 'house', | |
}).then(log); | |
} | |
function waitForIndexing() { | |
log('Wait for indexing ....'); | |
return new Promise(function(resolve) { | |
setTimeout(resolve, 2000); | |
}); | |
} | |
return Promise.resolve() | |
.then(dropNgIndex) | |
.then(createNgIndex) | |
.then(addToNgIndex) | |
.then(getFromNgIndex) | |
.then(waitForIndexing) | |
.then(searchNg) | |
.then(closeConnection); | |
/*return Promise.resolve() | |
.then(dropIndex) | |
.then(createIndex) | |
.then(addToIndex) | |
.then(getFromIndex) | |
.then(waitForIndexing) | |
.then(search) | |
.then(closeConnection); | |
*/ |
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ππΌππΌ perfect β