link-meta

Definition of a blog media type.

Scope

A Link Meta is a data type, a kind of blog media type.

This document serves the purpose of defining a Link Meta and a means by which it may be introduced into programming languages for use.

This repository may include code and methods for including the package in dependent programs.

Method of Description

A blog media type is a type of media along with a meta description of the media rendered/stored as a type.

A link-meta is an instance of a blog-type

Definition Origination

Definitions are cast in the dfon format. This is a format defined in a project, dfon2json.

definition: blog_type

Def:> file(def-${typename})       // def-blog_type.json
typename : blog_type
fields : #{
    creator :   <string|<UCWID>>
    email :     <string|<e-mail>[5,256]>
    title :     <string|[1,256]>
    subject :   <string|[1,256]>
    keys : [<token>]
    txt_full :  <string>
}
inherit : none
role : base

definition: link_meta

The following is the dfon definition of a the link-meta blog media type:

Def:> file(def-${typename})       // def-link_meta.json
typename : link_meta
fields : #{
    presentation : <string|<media-specifier>>
    links : [<string|<URL>>]
    link_map : { <token> : <string|<URL>> }             // A token provides an binding hint... instantiators use for injesting a link meta
    reverse_link_map : { <string|<URL>> : <token> }     // link meta managers may search for a token in a binding given a link as a key...
}
inherit : blog_type
role : impl

NPM Installation

npm install link-meta

use

Use in a node.js JavaScript program.

// Import the link meta class
const Link_meta = require('link-meta')

// create a new instance of the class (default values)
let a_link_meta = new Link_meta()

// Set specific fields
a_link_meta.set_from_map({
	"creator" : "the creator person",
	"email" : "[email protected]"
})


// set values throught the code

a_link_meta.title = "My Latest Opus"

// get values throughout the code 
let edit_title = a_link_meta.title

// set a map value

a_link_meta.set_link_map("that_link_id","https://linked.to/this/stuff")

// get a map value 
let what_is_that_url = a_link_meta.get_link_map("that_link_id")

// delete key-value pair
a_link_meta.del_link_map("that_link_id")

// Array operations

a_link_meta.push_links("https://linked.to/this/stuff")
a_link_meta.pop_links()