Blog post: Data normalisation with Mappa

Example JavaScript objects.js

var newsFeed = {
	meta: {
		foo: 'bar',
		etc: 12345
	},
	results: [
		{
			t: 'New GCC compiler',
			more: {
				u: 'http://reddit.com/'
			}
		},
		{
			t: 'Some other news',
			more: {
				u: 'http://bbc.co.uk/'
			}
		}
	]
};

var webDevelopers = {
	title: 'Oliver Caldwell',
	url: 'http://flowdev.co.uk/'
}

Example mappings.js

// First we add an alias so we can access the object under the name we want
// Lets call it tb, short for toolbox.
Mappa.addAlias('tb');

// From now on we will reference the Mappa object by its alias, tb.

// Lets map to our animation function
tb.addMap('animate', someAnimateFunction);

// Now lets map to our JSON functions
tb.addMap('json', {
    encode: JSON.stringify,
    decode: JSON.parse
});

Normalisation mapping.js

Mappa.addMap('newsFeed', {
    title: 'results.t',
    url: 'results.more.u'
});

Mappa.addMap('webDevelopers', {
    title: 'title',
    url: 'url'
});

Output.txt

New GCC compiler (http://reddit.com/)
Some other news (http://bbc.co.uk/)
Oliver Caldwell (http://flowdev.co.uk/)

Running of normalise.js

var norm = Mappa.normalise({
    newsFeed: newsFeed,
    webDevelopers: webDevelopers
});    

for(var i = 0; i < norm.length; i++) {
    console.log(norm[i].title + ' (' + norm[i].url + ')');
}