doublearray

JavaScript implementation of Double-Array trie

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doublearray
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Readme

Double-Array
JavaScript implementation of Double-Array trie.

Usage

Build

Node.js example
var doublearray = require('./doublearray.js');

var words = [
    { k: 'a', v: 1 },
    { k: 'abc', v: 2 },
    { k: '奈良', v: 3 },
    { k: '奈良先端', v: 4 },
    { k: '奈良先端科学技術大学院大学', v: 5 }
];

var trie = doublearray.builder().build(words);
Browser example
var words = [
    { k: 'a', v: 1 },
    { k: 'abc', v: 2 },
    { k: '奈良', v: 3 },
    { k: '奈良先端', v: 4 },
    { k: '奈良先端科学技術大学院大学', v: 5 }
];

var trie = doublearray.builder().build(words);
Method chaining
var trie = doublearray
       .builder()
       .append('a', 1)
       .append('abc', 2)
       .append('奈良', 3)
       .append('奈良先端', 4)
       .append('奈良先端科学技術大学院大学', 5)
       .build();

Search

trie.contain('a');  // -> true

trie.lookup('abc');  // -> 2

trie.commonPrefixSearch('奈良先端科学技術大学院大学');
// -> [ { v: 3, k: '奈良' },
//      { v: 4, k: '奈良先端' },
//      { v: 5, k: '奈良先端科学技術大学院大学' } ]

Load

Get BASE or CHECK buffer as Int32Array of typed array
var base_buffer = trie.bc.getBaseBuffer();
var check_buffer = trie.bc.getCheckBuffer();
Load and create a new DoubleArray object from original buffers
var loaded_trie = doublearray.load(base_buffer, check_buffer);

Copyright and license

Copyright (c) 2014 Takuya Asano All Rights Reserved.
This software is released under the MIT License. See LICENSE.txt