NaguTriples

Introduction

NaguTriples implements the persistent storage of triples in the form of <subject, predicate, object>。Main features include:

• All parts of the triples are stored as String in UTF-8, with the maximum length of 512B.
• The current version is only supports storage in Mysql.

Installation

npm install nagu-triples

Usage

引入包

import triples from 'nagu-triples'

每一个方法调用都需要带入Mysql的连接信息：

const options = {
  host: '192.168.0.231',
  database: 'owl',
  user: 'owl',
  password: 'password',
  port: 3306,
};

类型

Notion

三元组中subject, predicate, object 都是一个Notion，Notion是一个对象，包括id和name两个字段。

getOrCreate

获取或创建一个三元组

const trpileId = getOrCreate('a', 'b', 'c', options);

注意：

• 前三个参数分别是subject, predicate, object, 可以是String或Notion(如果传入Notion，将忽略name属性)。

查询

查询函数包括：

• getById
• listByS
• listByP
• listByO ...