Introduction to YQL - Talk at HackU 2010, IIT Chennai

select * from internet; Balaji Narayanan @balajijegan http://balajin.net/blog/

Application ?

Application = data manipulation data visualization +

var map = new YMap(document.getElementById('map'));…var currentGeoPoint = new YGeoPoint( _c.Lat, _c.Lon ); map.addMarker(currentGeoPoint);… … if (flickcurl_prepare(fc, "flickr.photos.geo.correctLocation", parameters, count)) { … } … http://search.yahooapis.com/ImageSearchService/V1/imageSearch?appid=YahooDemo&query=Corvette&results=2 http://weather.yahooapis.com/forecastrss?p=FRXX0076&u=c ? ? ? ?

What is the problem?

Thousands of Web Services and sources that provide valuable data

Data is isolated

Needs filtering, combining, tweaking, shaping even after it gets to the developer.

Require Developers to read documentation and form URLs/queries

YQL select desc show YQL stmt Bindings http://weather.yahooapis.com/forecastrss?p=FRXX0076&u=c … if (flickcurl_prepare(fc, "flickr.photos.geo.correctLocation", parameters, count)) { … } … http://search.yahooapis.com/ImageSearchService/V1/imageSearch?appid=YahooDemo&query=Corvette&results=2 var map = new YMap(document.getElementById('map'));…var currentGeoPoint = new YGeoPoint( _c.Lat, _c.Lon ); map.addMarker(currentGeoPoint);…

Web Service with a SQL Like Language

Familiar to developers

Synonymous with data access

Expressive enough to get the right data

Supports query, filter, join and update data across any structured data on the web / web services

Demo http://developer.yahoo.com/yql/console

XML or JSON output formats. JSON also allows for a callback parameter to use directly as JSON-P

Using YQL in your application

YQL is not limited to Yahoo! data only

use and set

Imports the Open Data Table definition

Makes it available as tableName

Acts just like other YQL Tables

Open tables can be collected together into environment files

set api_key=“value” on myTable

use ‘http://myweb/mytable.xml’ as tableName ; select * from my tableName

YQL Hosted Storage for Storing Secrets, Environment Files, Open Data Tables

insert into yql.storage.admin (name,url) values ('fireeagle','http://balajin.net/hacks/fireeagle.env')

< execute >
store://balajin.net/fireeagle
</execute>
< select >
store://RtdcPRPDsp0d8WyyLSDo3T
</select>
< update > store://hyOKm0GnP802H2hPzMARZ1
</update>

https://developer.yahoo.com/yql/console/? env=store://balajin.net/fireeagle

Insert / Update / Delete

Can modify the data on the cloud

Open Data Tables

Brings the power of table model to new APIs

Schema brings mapping between YQL and endpoint

Keys can be marked as required

YQL compiler validates the existence of required keys

< execute > element

Extends open data table with server side JS code

Move business logic of your application to the cloud

More easily build web applications

Data processing done away from the app

Consistent and familiar syntax for all data access

Iterative environment for developing the query

data YQL

Contribute http://github.com/yql/yql-tables/

Questions [email_address]

Introduction to YQL - Talk at HackU 2010, IIT Chennai

by Balaji Narayanan on Aug 13, 2010

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Introduction to YQL - Talk at HackU 2010, IIT Chennai — Presentation Transcript