Yet another delimited tokenizer plugin for Groonga

Tokenizer

TokenYaDelimitCaret

It tokenize by splliting with a caret ^.

> tokenize TokenYaDelimitCaret "a^b"
[[0,1408307554.89682,0.00087738037109375],
[
{"value":"a","position":0},
{"value":"b","position":1}
]]

TokenYaDelimitColon

It tokenize by splliting with a colon :.

> tokenize TokenYaDelimitColon "a:b"
[[0,1408307603.1058,0.000877618789672852],
[
{"value":"a","position":0},
{"value":"b","position":1}
]]

TokenYaDelimitSemicolon

It tokenize by splliting with a semicolon ;.

> tokenize TokenYaDelimitSemicolon "a;b"
[[0,1408307632.20784,0.000780344009399414],
[
{"value":"a","position":0},
{"value":"b","position":1}
]]

TokenYaDelimitPunct

It tokenize by splliting with punctuations !"#$%&'()*+,-./:;<=>?@[\]^_`{|}.

> tokenize TokenYaDelimitPunct "a@b"
[[0,1408307668.55782,0.00076603889465332],
[
{"value":"a","position":0},
{"value":"b","position":1}
]]

TokenYaDelimitPunctWithBlank

It tokenize by splliting with punctuations and blank !"#$%&'()*+,-./:;<=>?@[\]^_`{|} .

> tokenize TokenYaDelimitPunctWithBlank "This is a pen. Do you understand?"
[[0,1408307738.93184,0.00175285339355469],
[
{"value":"This","position":0},
{"value":"is","position":1},
{"value":"a","position":2},
{"value":"pen","position":3},
{"value":"Do","position":4},
{"value":"you","position":5},
{"value":"understand","position":6}
]]

Install

Install groonga-tokenizer-yadelimit package:

CentOS

• CentOS6

% sudo yum localinstall -y http://packages.createfield.com/centos/6/groonga-tokenizer-yadelimit-1.0.0-1.el6.x86_64.rpm

• CentOS7

% sudo yum localinstall -y http://packages.createfield.com/centos/7/groonga-tokenizer-yadelimit-1.0.0-1.el7.centos.x86_64.rpm

Fedora

• Fedora 20

% sudo yum localinstall -y http://packages.createfield.com/fedora/20/groonga-tokenizer-yadelimit-1.0.0-1.fc20.x86_64.rpm

• Fedora 21

% sudo yum localinstall -y http://packages.createfield.com/fedora/21/groonga-tokenizer-yadelimit-1.0.0-1.fc21.x86_64.rpm

Debian GNU/LINUX

• wheezy

% wget http://packages.createfield.com/debian/wheezy/groonga-tokenizer-yadelimit_1.0.0-1_amd64.deb
% sudo dpkg -i groonga-tokenizer-yadelimit_1.0.0-1_amd64.deb

• jessie

% wget http://packages.createfield.com/debian/jessie/groonga-tokenizer-yadelimit_1.0.0-1_amd64.deb
% sudo dpkg -i groonga-tokenizer-yadelimit_1.0.0-1_amd64.deb

Ubuntu

• precise

% wget http://packages.createfield.com/ubuntu/precise/groonga-tokenizer-yadelimit_1.0.0-1_amd64.deb
% sudo dpkg -i groonga-tokenizer-yadelimit_1.0.0-1_amd64.deb

• trusty

% wget http://packages.createfield.com/ubuntu/trusty/groonga-tokenizer-yadelimit_1.0.0-1_amd64.deb
% sudo dpkg -i groonga-tokenizer-yadelimit_1.0.0-1_amd64.deb

Source install

Build this tokenizer.

% sh autogen.sh
% ./configure
% make
% sudo make install

Dependencies

• Groonga >= 4.0.5

Install groonga-devel in CentOS/Fedora. Install libgroonga-dev in Debian/Ubuntu.

See http://groonga.org/docs/install.html

Usage

Firstly, register tokenizers/yadelimit

Groonga:

% groonga db
> register tokenizers/yadelimit
> table_create Diaries TABLE_HASH_KEY INT32
> column_create Diaries body COLUMN_SCALAR TEXT
> table_create Terms TABLE_PAT_KEY ShortText --default_tokenizer TokenYaDelimitPunctWithBlank
> column_create Terms diaries_body COLUMN_INDEX|WITH_POSITION Diaries body

Mroonga:

mysql> use db;
mysql> CREATE TABLE `temp` (id INT NOT NULL) ENGINE=mroonga DEFAULT CHARSET=utf8;
mysql> DROP TABLE `temp`;
mysql> select mroonga_command("register tokenizers/yadelimit");
mysql> CREATE TABLE `Diaries` (
    -> id INT NOT NULL,
    -> body TEXT NOT NULL,
    -> PRIMARY KEY (id) USING HASH,
    -> FULLTEXT INDEX (body) COMMENT 'parser "TokenYaDelimitPunctWithBlank"'
    -> ) ENGINE=mroonga DEFAULT CHARSET=utf8;

Rroonga:

irb --simple-prompt -rubygems -rgroonga
>> Groonga::Context.default_options = {:encoding => :utf8}   
>> Groonga::Database.create(:path => "/tmp/db")
>> Groonga::Plugin.register(:path => "tokenizers/yadelimit.so")
>> Groonga::Schema.create_table("Diaries",
?>                              :type => :hash,
?>                              :key_type => :integer32) do |table|
?>   table.text("body")
>> end
>> Groonga::Schema.create_table("Terms",
?>                              :type => :patricia_trie,
?>                              :normalizer => :NormalizerAuto,
?>                              :default_tokenizer => "TokenYaDelimitPunctWithBlank") do |table|
?>   table.index("Diaries.body")
>> end

Author

• Naoya Murakami naoya@createfield.com

License

LGPL 2.1. See COPYING for details.

This program includes the Groonga delimited tokenizer.
https://github.com/groonga/groonga/blob/master/lib/token.c

This program is the same license as Groonga.

The Groonga delimited tokenizer is povided by Copyright(C) 2009-2012 Brazil