matrix-eventfilter

Instance Methods for Streaming API on Device & Server

Initialize With

var EventFilter = require('matrix-eventfilter').EventFilter;
var face = new EventFilter('face');
var vehicle = new EventFilter('vehicle');

Example Usage

Requires Then to Activate

// starts stream and queues callback
face.then(function(results, filter){})

Basic Filters

is / like

// single declaration
face.is('age', 23)

// object declaration
face.is({ 'age' : 24, gender:'male' })

// ranges
face.is({'age': {'$lte': 24, '$gte': 18}})

not

Negation

face.not('device')

contains

String match

vehicle.contains('make', 'Mustang')

near

Point and range.

vehicle.near([25,80], 1)

Complex Filters

Has

Has enables a subset of filters

Between

face.has('age').between(18,25);

Within

face.has('device').within([12,13,14,16]);

After (Aliases: Over, Above)

vehicle.has('year').after(1960);

Before (Aliases: Under, Below)

vehicle.has('year').under(2000)

Of

vehicle.has('color').of('red')

Real-World Examples

Vehicles traveling at high speeds.

vehicle.has('year').before(1960).has('speed').above(70).then(function(response) {
  console.log('Car is unsafe to drive at these speeds.');
});