OpenSensorHub Toolkit

Class: JSON

OSH.DataReceiver. JSON

This datasource provides generic parsing for JSON response.

new OSH.DataReceiver.JSON()

datareceiver/osh-DataReceiver-DataSourceJSON.js, line 17
Example
var androidPhoneGpsDataSource = new OSH.DataReceiver.JSON("android-GPS", {
    protocol: "ws",
    service: "SOS",
    endpointUrl: "sensiasoft.net:8181/sensorhub/sos",
    offeringID: "urn:android:device:060693280a28e015-sos",
    observedProperty: "http://sensorml.com/ont/swe/property/Location",
    startTime: "2015-02-16T07:58:00Z",
    endTime: "2015-02-16T08:09:00Z",
    replaySpeed: replayFactor+"",
    syncMasterTime: true,
    bufferingTime: 1000,
    timeShift: -16000
  });

Extends

Methods

inherited buildUrl(properties){string}

datareceiver/osh-DataReceiver-DataSource.js, line 190

Builds the full url.

Name Type Description
properties object
Name Type Description
protocol string

the connector protocol
endpointUrl string

the endpoint url
service string

the service
offeringID string

the offeringID
observedProperty string

the observed property
startTime string

the start time (ISO format)
endTime string

the end time (ISO format)
replaySpeed number

the replay factor
responseFormat number

the response format (e.g video/mp4)
Returns:
Type Description
string the full url

inherited connect()

datareceiver/osh-DataReceiver-DataSource.js, line 100

Connect the dataSource then the connector will be opened as well.

inherited disconnect()

datareceiver/osh-DataReceiver-DataSource.js, line 84

Disconnect the dataSource then the connector will be closed as well.

inherited getId(){string}

datareceiver/osh-DataReceiver-DataSource.js, line 160

Gets the datasource id.

Returns:
Type Description
string the datasource id

inherited getName(){*}

datareceiver/osh-DataReceiver-DataSource.js, line 170

Gets the datasource name.

Returns:
Type Description
*

inherited initDataSource(properties)

datareceiver/osh-DataReceiver-DataSource.js, line 47

Inits the datasource with the constructor properties.

Name Type Description
properties

inherited onData(data)

datareceiver/osh-DataReceiver-DataSource.js, line 152
Name Type Description
data Object

the data object
Example
data is represented as
data = {
   timeStamp: timeStamp // number
   data: data // data to render
};

parseData($super, data){Object}

datareceiver/osh-DataReceiver-DataSourceJSON.js, line 69

Extract data from the message. The data are corresponding to the whole list of attributes of the JSON object
excepting the 'time' one.

Name Type Description
$super function

the parseData super method
data Object

the data to parse
Returns:
Type Description
Object the parsed data
Example
{
  location : {
   lat:43.61758626,
   lon: 1.42376557,
   alt:100
  }
}

parseTimeStamp($super, data){number}

datareceiver/osh-DataReceiver-DataSourceJSON.js, line 47

Extracts timestamp from the message. The timestamp corresponds to the 'time' attribute of the JSON object.

Name Type Description
$super function

the parseTimeStamp super method
data string

the data to parse
Returns:
Type Description
number the extracted timestamp

Type Definitions

onMessage

The callback which receives data.