YQL Open Hackday NYC talk

Yahoo Query Language select * from internet Jonathan Trevor (jtrevor@yahoo-inc.com) @jonathantrevor

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data manipulation Application =

data manipulation Application = + data visualization

data data

var map = new YMap(document.getElementById('map')); … dev var currentGeoPoint = new YGeoPoint( _c.Lat, _c.Lon ); map.addMarker(currentGeoPoint); …

var map = new YMap(document.getElementById('map')); … dev var currentGeoPoint = new YGeoPoint( _c.Lat, _c.Lon ); map.addMarker(currentGeoPoint); … … if (flickcurl_prepare(fc, "flickr.photos.geo.correctLocation", parameters, count)) { … } …

var map = new YMap(document.getElementById('map')); … dev 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

var map = new YMap(document.getElementById('map')); … dev 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

var map = new YMap(document.getElementById('map')); … dev 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

Yahoo! My Yahoo! Mail Welcome, guest Sign In Search MY PROJECTS APIs & WEB SERVICES var map = new RESOURCES SUPPORT YDN Maps Suite AJAX Maps YMap(document.getElementById('map')); Yahoo! Maps Web Services - AJAX API Getting … READY TO GET STARTED? You aren't signed in Sign In Help Started Guide var currentGeoPoint = newGet an App ID dev Home The Tour Sign Up Explore Search Learn the fundamentals of the Yahoo! Maps AJAX API and start creating your own maps. This page contains: Introduction and Prerequisites YGeoPoint( _c.Lat, _c.Lon ); Yahoo! Maps Cheatsheets Examples Flickr Services Yahoo! My Yahoo! Mail RECENT BLOG ARTICLES Welcome, guest Sign In API Documentation Feeds Your API Keys map.addMarker(currentGeoPoint); Display a Yahoo! Map ? Apply for a new API Key Add controls to your Yahoo! Map Leonardo da Vinci: Hacker Search Add a logger to a Yahoo! Map Place a marker on a Yahoo! Map … MY PROJECTS January 24, 2009 APIs & WEB SERVICES RESOURCES SUPPORT Draw Polylines on a Yahoo! Map Whaddyathink? & the Yahoo! Application flickr.places.getPlaceTypes Place Smart Markers on a Yahoo! Map Add multiple custom markers on Yahoo! Map YDN Weather RSS Feed Platform January 22, 2009 Traffic information overlay Yahoo! Pipes RSS output information overlay Yahoo! Weather RSS Feed Making the new Yahoo! Currency Converter Yahoo! My Yahoo! Mail Welcome, guest Sign In Local search results overlay Fetches a list of available place types for Flickr. Yahoo! Pipes JSON output information overlay YMap accessible The Weather RSS feed enables you Januaryto get up-to-date weather information for your location. You can save this 21, 2009 Overlay GeoRSS XML data Overlay custom objects at YGeoPoint location … feed in My Yahoo! or your favorite feed aggregator, or incorporate the RSS data into your own web site or client Search application. The Weather RSSRetrievingdynamically-generatedfrom based on zip code or Location ID. feed is a and displaying data feed Authentication Overlay custom objects at YCoordPoint location Overlay polyline on Yahoo! Map if (flickcurl_prepare(fc, Wikipedia with YQL PROJECTS MY APIs & WEB SERVICES RESOURCES This page describes the format of the 18, 2009 URL and the RSS response for developers. It contains these January request SUPPORT ? Export Yahoo! Map in GeoRSS format YDN Image Search Documentation for Yahoo! Search Web Services This method does not require authentication. GeoRSS overlay with polyline "flickr.photos.geo.correctLocation", sections: Get zoom level given radius from center Custom position of controls Arguments RSS Request Image Search Documentation for Yahoo! Search READY TO GET STARTED? Change Marker Images Dynamically Use YMapTypeControl to position map types parameters, count)) { … } Summary Request Parameters By applying for an Application ID for this service, you hereby agree to the Terms of Use Submitting Image Queries Rate Limit api_key (Required) Other Features of the Yahoo! Maps AJAX API … RSS Response YEvent, YGeoRSS, YMarker Your API application key. See here for moreTop-Level Elements details. The Image Search Web Service allows you to search the Internet for images. Get an App ID Terms of Service Channel Elements Support & Community Image Elements ? Example Response Item Elements Download all of the cheatsheets and example code in the Yahoo Request URL Maps API Reference Bundle. Condition Codes YAHOO! GROUPS DISCUSSIONS view all <place_types> Examples http://search.yahooapis.com/ImageSearchService/V1/imageSearch For detailed descriptions of the classes and methods in the API, place_type_id="22">neighbourhood</place_type> <place_type yahoo local search code in php Terms of Use Tue, 27 Jan 2009 check out v3.8 Reference Manual. <place_type place_type_id="7">locality</place_type> <place_type <place_type http://search.yahooapis.com/ place_type_id="9">county</place_type> RSS Request place_type_id="8">region</place_type> Remaining, Supporting Classes Request parameters My Web Search API shut down See information on constructing REST queries announcement Introduction and <place_type Prerequisites <place_type ImageSearchService/V1/imageSearch? place_type_id="12">country</place_type> The Weather RSS feed request follows simple HTTP GET syntax: start with a base URL and then add place_type_id="29">continent</place_type> (?). Multiple parameters are separated by an ampersand (&). parameters and values after a question mark Wed, 21 Jan 2009 Parameter Value Description </place_types> appid=YahooDemo&query=Corvette&results=2 The Yahoo! AJAX Maps API lets developers add maps to their web sites using DHTML and JavaScript®. the Weather RSS feed is The base URL for Maps appid string (required) The application ID. See Application IDs for more information. Re: Site Explorer API returns 999 Rate Limit Exceeded are fully embeddable and scriptable using the JavaScript programming language. Yahoo! Maps AS-Flash API's query string (required) The query to search for. Use + to include terms, - to exclude terms, and ? Wed, 21 Jan 2009 Error Codes built-in geocoder means that you can specify a physical address or latitude/longitude coordinates for your map's http://weather.yahooapis.com/forecastrss put quotes around "exact phrase". location, as you like. type all (default), any, or The kind of search to submit: Reminder: Old obsolete versions of Local In this section, Summary shows how to make an RSS request with different parameters; Request Parameters phrase Search (V1, V2) shutting do In order to create and test applications 100: Yahoo! Maps AJAX API, you'll need to use a supported summarizing those parameters. using Invalid API Key shows a table web all returns results with all query terms. Mon, 19 Jan 2009 The API key passed was not valid or has expired. browser: Firefox 2, Internet Explorer 6 or 7, Opera 9 or Safari 3. Newer versions of these browsers are also any returns results with one or more of the query terms. supported. You can code your JavaScript applications usingcurrently unavailable 105: Service your favorite text editor or IDE. phrase returns results containing the query terms as a phrase. SUMMARY results integer: default 10, The number of results to return. The requested service is temporarily unavailable. An application ID is required to use the Yahoo! Maps AJAX API. You can get an application ID here. max 50 The Weather RSS feed request follows simple HTTP GET syntax: start with a base URL and then add 111: Format "xxx" not found start integer: default 1 parameters and values after a question mark (?). Multiple parameters are separated by an starting result position to return (1-based). The finishing position (start The ampersand (&). For For best results, you should launch your web pagesrequested response format was not found. applications The from a web server. However, it's possible to run + results - 1) cannot exceed 1000. the Weather RSS feed there are two parameters: directly from your hard drive by double-clickingMethod This can be donefound 112: on them. "xxx" not by lowering the security settings in format any (default), bmp, Specifies the kind of image file to search for. the Internet Explorer browser or by setting the The requested method was not found. p for location. UniversalBrowserRead property in Firefox. gif, jpeg, png u for degrees units (Fahrenheit or Celsius). adult_ok 114: Invalid SOAP envelope http://weather.yahooapis.com/ no value or 1 The service filters out adult content by default. Enter a 1 to allow adult content. The SOAP envelope send in the requestlocationnot be parsed. required. Use this parameter to indicate the location for the weather forecast as a The could parameter p is Displaying a Yahoo! Map zip code or Location ID. coloration any (default), color, The service returns only the images of the coloration specified (color or 115: Invalid XML-RPC Method Call forecastrss?p=FRXX0076&u=c All the API classes and methods necessary to interact with Yahoo! Mapsdocument couldyour application when The XML-RPC request are availablehttp://weather.yahooapis.com/forecastrss?p=location to not be parsed. bw black-and-white). site string: default no A domain to restrict your searches to (e.g. www.yahoo.com). You may you include Yahoo! Maps AJAX API library in your web page.This example uses the demonstration application value submit up to 30 values (site=www.yahoo.com&site=www.cnn.com). ID "YD-eQRpTl0_JX2E95l_xAFs5UwZUlNQhhn7lj1H"; you cannot use this Application Forand must requestweather for Yahoo! Headquarters in Sunnyvale, CA, use the zip ID example, to get one code for Sunnyvale here. API Explorer (94089): output string: xml The format for the output. If json is requested, the results will be returned (default), json, php in JSON format. If php is requested, the results will be returned in Serialized PHP format. <html> API Explorer : flickr.places.getPlaceTypes http://weather.yahooapis.com/forecastrss?p=94089 <head> callback string The name of the callback function to wrap around the JSON data. The <b><script type="text/javascript" Or use the Location ID for Sunnyvale (USCA1116): following characters are allowed: A-Z a-z 0-9 . [] and _. If output=json has src="http://api.maps.yahoo.com/ajaxymap?v=3.8&appid=YD- not been requested, this parameter has no effect. More information on the

var map = new YMap(document.getElementById('map')); … dev 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

dev YQL

dev Bindings YQL

dev Bindings YQL stmt YQL

dev Bindings YQL stmt YQL select

dev Bindings YQL stmt YQL select desc

dev Bindings YQL stmt YQL select desc show

Why YQL? Thousands of Web Services and sources that provide valuable data Require Developers to read documentation and form URLs/queries. Data is isolated Needs ﬁltering, combining, tweaking, shaping even after it gets to the developer.

YQL Hosted web service and SQL-Like Language Familiar to developers Synonymous with Data access Expressive enough to get the right data. Self describing - show, desc table Allows you to query, ﬁlter, join and update data across any structured data on the web / web services Real time engine

YQL Statement Basics show: lists the supported tables desc: describes the structure of a table select: fetches data insert/update/delete: modify data use: use an Open Data Table show tables desc social.contacts

YQL Select Statement SELECT what FROM collection WHERE filter condition IN (sub-select) LIMIT n OFFSET n

Demo: developer.yahoo.com/yql/

Get any data: open data tables

Open Data Tables YQL

Open Data Tables Bindings YQL

Open Data Tables Map YQL to Endpoint YQL

USE Verb use ‘http://url-to-def.xml’ as tableName; select * from tableName where key=‘value’... 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

Open Developer Community leveraging the work of others github repository: http://github.com/yql/yql-tables/tree/master datatables.org mirrors the master and builds a single environment with all tables (faster serving) http://developer.yahoo.com/yql/console/?env=http:// datatables.org/alltables.env

Insert / Update / Delete With INSERT / UPDATE / DELETE SQL verbs you can modify data on the internet create tweets, add blog entries, update DBs etc Some tables with I/U/D Twitter Status, Bit.ly shortener Yahoo proﬁle status, application update stream Amazon SimpleDB

Part 2: Building your own open data tables

Open Data Tables Brings the power of the table model to new APIs Schema deﬁnes mapping between YQL and Endpoint Keys can either be query, path or matrix parameters Keys can be marked as required YQL Compiler validates existence of required keys

Open Data Tables

YQL <execute> extends Open Data Tables with server-side code access APIs that require authentication Netflix OAuth, FlickrAuth, Google AuthSub join data across services grab New York Times article tags and generate find associated flickr photos combine multiple searches into a single result: twitter, web, news and image

YQL <execute> augment data: city/state to APIs that just return zip code create APIs from web page celebrity birthdays scraped from imdb, caltrain data transformation convert the result from xml to Google's kml format move business logic of your application to the cloud

<execute> element Javascript server-side scripting No DOM, events etc, pure JS scripting E4X support - XML literals, ﬁltering ... YQL no longer performs a GET request to the table binding URL YQL provides additional useful global objects request, response, y.rest, y.include, y.query... execute tag must return the data that will be the output of the YQL select

hello world <table xmlns="http://query.yahooapis.com/v1/schema/table.xsd"> <meta> <sampleQuery>select * from {table} where a='cat' and b='dog';</sampleQuery> </meta> <bindings> <select itemPath="" produces="XML"> <urls><url>http://fake.url/{a}</url></urls> <inputs> <key id='a' type='xs:string' paramType='path' required="true" /> <key id='b' type='xs:string' paramType='variable' required="true" /> </inputs> <execute><![CDATA[ // Your javascript goes here. We will run it on our servers response.object = <item> <url>{request.url}</url> <a>{a}</a> <b>{b}</b> </item>; ]]></execute> </select> </bindings> </table>

Scraping a page <select produces="XML" itemPath="deals.deal"> <urls><url>http://deals.yahoo.com</url></urls> <execute><![CDATA[ var dealhtml = y.query("select * from html where url='http://deals.yahoo.com' and xpath='// div[contains(@class, "product-display")]'").results; var deals = <deals/>; function compress(object) { if (!object) return ""; return object.toString().replace(/s+/, " ") } for each (var div in dealhtml.div) { var deal = <deal/>; deal.name += <name>{compress(div.h3.a.text())}</name>; deal.link += <link>{div.div[0].a.@href}</link>; … deal.description += <description>{compress(div.p[0].*)}</description>; deal.logo += <logo>{compress(div.div[1].*)}</logo>; deals.deal += deal; } response.object = deals; ]]></execute> </select>

Inner join (uniﬁed web+image search) <table xmlns="http://query.yahooapis.com/v1/schema/table.xsd"> <bindings> <select itemPath="results.result" produces="XML"> <inputs> <key id="query" type="xs:string" paramType="query" required="true"/> </inputs> <execute><![CDATA[ var qs = query; var search = y.query('select * from search.web(50) where query=@query', {query: qs}).results; var images = []; default xml namespace='http://www.inktomi.com/'; for each (var result in search.result) { images.push(y.query('select * from search.images(1) where query=@query and url=@url', {url:result.url, query:qs})); } var i = 0; for each (var result in search.result) { var image = images[i++].results.result; if (image) { result.image = <image>{image}</image>; } } response.object = search; ]]></execute> </select> </bindings> </table>

Authentication: Search Netflix catalog <table xmlns="http://query.yahooapis.com/v1/schema/table.xsd" https="true"> <meta>...</meta> <bindings> <select itemPath="" produces="XML" > <urls><url env="all">http://api.netflix.com/catalog/titles/</url></urls> <paging model="offset"> <start id="start_index" default="0" /> <pagesize id="max_results" max="100" /> <total default="10" /> </paging> <inputs> <key id="term" type="xs:string" paramType="query" required="true" /> <key id="ck" type="xs:string" paramType="variable" required="true" /> <key id="cks" type="xs:string" paramType="variable" required="true" /> </inputs> <execute><![CDATA[ // Include the OAuth libraries from oauth.net y.include("http://oauth.googlecode.com/svn/code/javascript/oauth.js"); y.include("http://oauth.googlecode.com/svn/code/javascript/sha1.js"); // Collect all the parameters var encodedurl = request.url; var accessor = { consumerSecret: cks, tokenSecret: ""}; var message = { action: encodedurl, method: "GET", parameters: [["oauth_consumer_key",ck],["oauth_version","1.0"]]}; OAuth.setTimestampAndNonce(message); // Sign the request OAuth.SignatureMethod.sign(message, accessor); try { // get the content from service along with the OAuth header, and return the result back out response.object = request.contentType('application/xml').header("Authorization", OAuth.getAuthorizationHeader("netflix.com", message.parameters)).get().response; } catch(err) { response.object = {'result':'failure', 'error': err}; } ]]></execute> </select> </bindings> </table>

select * from twitter.status where id="2108869549" and username="xxx" and password="yyy" <select itemPath="" produces="XML"> <urls><url>http://twitter.com/statuses/show/{id}.xml</url></urls> <inputs> <key id="username" type="xs:string" required="false" paramType="variable"/> <key id="password" type="xs:string" required="false" paramType="variable"/> <key id="id" type="xs:integer" required="true" paramType="path"/> </inputs> <execute><![CDATA[ var r = null; if (username && password) { y.include("http://yqlblog.net/samples/base64.js"); var authheader = "Basic "+Base64.encode(username+":"+password); r = request.header("Authorization",authheader).get().response; } else { r = request.get().response; } response.object = r; ]]></execute> </select>

insert into twitter.status (status,username,password) values ("new tweet from YQL",”xxx”,”yyy”); <insert itemPath="" produces="XML"> <urls> <url>http://twitter.com/statuses/update.xml</url> </urls> <inputs> <value id="username" type="xs:string" required="true" paramType="variable"/> <value id="password" type="xs:string" required="true" paramType="variable"/> <value id="status" type="xs:string" required="true" paramType="variable"/> </inputs> <execute><![CDATA[ y.include("http://yqlblog.net/samples/base64.js"); var authheader = "Basic "+Base64.encode(username+":"+password); var content = "status="+status; response.object = request.header("Authorization",authheader).post(content).response; ]]></execute> </insert>

delete from twitter.status where id="2108869549" and username="xxx" and password="yyy" <delete itemPath="" produces="XML"> <urls> <url>http://twitter.com/statuses/destroy/{id}.xml</url> </urls> <inputs> <key id="username" type="xs:string" required="true" paramType="variable"/> <key id="password" type="xs:string" required="true" paramType="variable"/> <key id="id" type="xs:string" required="true" paramType="path"/> </inputs> <execute><![CDATA[ y.include("http://yqlblog.net/samples/base64.js"); var authheader = "Basic "+Base64.encode(username+":"+password); response.object = request.header("Authorization",authheader).del().response; ]]></execute> </delete>

Conclusion More easily build applications fewer lines of code data processing done away from app consistent and familiar syntax for all data access iterative environment for developing the query

Conclusion build applications that run faster service in the cloud does the work conversion, ﬁltering, parallel requests... with smaller network footprint fewer (client) calls smaller data amounts closer to the data, fatter pipes

YQL select * from internet http://developer.yahoo.com/yql Jonathan Trevor yql-questions@yahoo-inc.com

YQL Open Hackday NYC talk

by Jonathan Trevor on Oct 14, 2009

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YQL Open Hackday NYC talk — Presentation Transcript