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YQL presentation from Lunch2.0 hosted at Yahoo! on April 30th 2009. Includes information on the Yahoo Query Language, YQL execute, open data tables and so on.

YQL presentation from Lunch2.0 hosted at Yahoo! on April 30th 2009. Includes information on the Yahoo Query Language, YQL execute, open data tables and so on.

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  • 1. Yahoo Query Language select * from internet Jonathan Trevor (jtrevor@yahoo-inc.com)
  • 2. Application ?
  • 3. Application ?
  • 4. Application ?
  • 5. Application ?
  • 6. Application ?
  • 7. Application =
  • 8. data manipulation Application =
  • 9. data manipulation Application = + data visualization
  • 10. data data
  • 11. data
  • 12. data
  • 13. dev
  • 14. dev
  • 15. dev
  • 16. dev
  • 17. dev
  • 18. dev
  • 19. dev
  • 20. dev
  • 21. dev
  • 22. dev
  • 23. dev
  • 24. var map = new YMap(document.getElementById('map')); … var currentGeoPoint = new dev YGeoPoint( _c.Lat, _c.Lon ); map.addMarker(currentGeoPoint); …
  • 25. var map = new YMap(document.getElementById('map')); … var currentGeoPoint = new dev YGeoPoint( _c.Lat, _c.Lon ); map.addMarker(currentGeoPoint); … … if (flickcurl_prepare(fc, quot;flickr.photos.geo.correctLocationquot;, parameters, count)) { … } …
  • 26. var map = new YMap(document.getElementById('map')); … var currentGeoPoint = new dev YGeoPoint( _c.Lat, _c.Lon ); map.addMarker(currentGeoPoint); … … if (flickcurl_prepare(fc, quot;flickr.photos.geo.correctLocationquot;, parameters, count)) { … } … http://search.yahooapis.com/ ImageSearchService/V1/imageSearch? appid=YahooDemo&query=Corvette&results=2
  • 27. var map = new YMap(document.getElementById('map')); … var currentGeoPoint = new dev YGeoPoint( _c.Lat, _c.Lon ); map.addMarker(currentGeoPoint); … … if (flickcurl_prepare(fc, quot;flickr.photos.geo.correctLocationquot;, parameters, count)) { … } … http://search.yahooapis.com/ ImageSearchService/V1/imageSearch? appid=YahooDemo&query=Corvette&results=2 http://weather.yahooapis.com/ forecastrss?p=FRXX0076&u=c
  • 28. var map = new YMap(document.getElementById('map')); … var currentGeoPoint = new dev YGeoPoint( _c.Lat, _c.Lon ); map.addMarker(currentGeoPoint); … … if (flickcurl_prepare(fc, quot;flickr.photos.geo.correctLocationquot;, parameters, count)) { … } … http://search.yahooapis.com/ ImageSearchService/V1/imageSearch? appid=YahooDemo&query=Corvette&results=2 http://weather.yahooapis.com/ forecastrss?p=FRXX0076&u=c
  • 29. var map = new YMap(document.getElementById('map')); … var currentGeoPoint = new dev YGeoPoint( _c.Lat, _c.Lon ); map.addMarker(currentGeoPoint); … … if (flickcurl_prepare(fc, quot;flickr.photos.geo.correctLocationquot;, parameters, count)) { … } … http://search.yahooapis.com/ ImageSearchService/V1/imageSearch? appid=YahooDemo&query=Corvette&results=2 http://weather.yahooapis.com/ forecastrss?p=FRXX0076&u=c
  • 30. var map = new YMap(document.getElementById('map')); … var currentGeoPoint = new dev YGeoPoint( _c.Lat, _c.Lon ); map.addMarker(currentGeoPoint); … … if (flickcurl_prepare(fc, quot;flickr.photos.geo.correctLocationquot;, parameters, count)) { … } … http://search.yahooapis.com/ ImageSearchService/V1/imageSearch? appid=YahooDemo&query=Corvette&results=2 http://weather.yahooapis.com/ forecastrss?p=FRXX0076&u=c
  • 31. var map = new YMap(document.getElementById('map')); … var currentGeoPoint = new dev YGeoPoint( _c.Lat, _c.Lon ); map.addMarker(currentGeoPoint); … … if (flickcurl_prepare(fc, quot;flickr.photos.geo.correctLocationquot;, parameters, count)) { … } … http://search.yahooapis.com/ ImageSearchService/V1/imageSearch? appid=YahooDemo&query=Corvette&results=2 http://weather.yahooapis.com/ forecastrss?p=FRXX0076&u=c
  • 32. var map = new YMap(document.getElementById('map')); … var currentGeoPoint = new dev YGeoPoint( _c.Lat, _c.Lon ); map.addMarker(currentGeoPoint); ? … … if (flickcurl_prepare(fc, ? quot;flickr.photos.geo.correctLocationquot;, parameters, count)) { … } … ? http://search.yahooapis.com/ ImageSearchService/V1/imageSearch? appid=YahooDemo&query=Corvette&results=2 ? http://weather.yahooapis.com/ forecastrss?p=FRXX0076&u=c
  • 33. var map = new YMap(document.getElementById('map')); … var currentGeoPoint = new dev YGeoPoint( _c.Lat, _c.Lon ); map.addMarker(currentGeoPoint); ? … … if (flickcurl_prepare(fc, ? quot;flickr.photos.geo.correctLocationquot;, parameters, count)) { … } … ? http://search.yahooapis.com/ ImageSearchService/V1/imageSearch? appid=YahooDemo&query=Corvette&results=2 ? http://weather.yahooapis.com/ forecastrss?p=FRXX0076&u=c
  • 34. Yahoo! My Yahoo! Mail Welcome, guest Sign In Search var map = new MY PROJECTS APIs & WEB SERVICES RESOURCES SUPPORT YMap(document.getElementById('map')); YDN Maps Suite AJAX Maps Yahoo! Maps Web Services - AJAX API Getting READY TO GET STARTED? … You aren't signed in Sign In Help Started Guide Get an App ID var currentGeoPoint = new 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: YGeoPoint( _c.Lat, _c.Lon ); Introduction and Prerequisites Yahoo! Maps Cheatsheets Flickr Services RECENT BLOG ARTICLES Yahoo! My Yahoo! Mail Examples Welcome, guest Sign In API Documentation Feeds Your API Keys map.addMarker(currentGeoPoint); Display a Yahoo! Map ? Apply for a new API Key Search Add controls to your Yahoo! Map Leonardo da Vinci: Hacker … January 24, 2009 Add a logger to a Yahoo! Map Place a marker on a Yahoo! Map MY PROJECTS 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 Platform YDN Weather RSS Feed Add multiple custom markers on Yahoo! Map January 22, 2009 Traffic information overlay Yahoo! Weather RSS Feed Yahoo! Pipes RSS output information overlay Making the new Yahoo! Currency Converter Yahoo! My Yahoo! Mail Welcome, guest Sign In Fetches a list of available place types for Flickr. Yahoo! Pipes JSON output information overlay accessible YMap Local search results overlay The Weather RSS feed enables you Januaryto get up-to-date weather information for your location. You can save this 21, 2009 … Search Overlay GeoRSS XML data feed in My Yahoo! or your favorite feed aggregator, or incorporate the RSS data into your own web site or client Overlay custom objects at YGeoPoint location 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 if (flickcurl_prepare(fc, Wikipedia with YQL PROJECTS MY APIs & WEB SERVICES RESOURCES SUPPORT Overlay polyline on Yahoo! Map This page describes the format of the 18, 2009 URL and the RSS response for developers. It contains these January request ? Export Yahoo! Map in GeoRSS format YDN Image Search Documentation for Yahoo! Search Web Services This method does not require authentication. quot;flickr.photos.geo.correctLocationquot;, sections: GeoRSS overlay with polyline Image Search Documentation for Yahoo! Search Get zoom level given radius from center READY TO GET STARTED? RSS Request Arguments Custom position of controls parameters, count)) { … } By applying for an Application ID for this service, you Summary Change Marker Images Dynamically hereby agree to the Terms of Use Request Parameters Use YMapTypeControl to position map types Submitting Image Queries … api_key (Required) Other Features of the Yahoo! Maps AJAX API RSS Response YEvent, YGeoRSS, YMarker Get an App ID Rate Limit Your API application key. See here for moreTop-Level Elements details. The Image Search Web Service allows you to search the Internet for images. Terms of Service Channel Elements Support & Community Image Elements ? Example Response Item Elements Request URL Download all of the cheatsheets and example code in the Yahoo Condition Codes view all YAHOO! GROUPS DISCUSSIONS Maps API Reference Bundle. http://search.yahooapis.com/ImageSearchService/V1/imageSearch <place_types> Examples yahoo local search code in php For detailed descriptions of the classes and methods in the API, place_type_id=quot;22quot;>neighbourhood</place_type> <place_type Terms of Use Tue, 27 Jan 2009 check out v3.8 Reference Manual. <place_type place_type_id=quot;7quot;>locality</place_type> http://search.yahooapis.com/ Request parameters <place_type place_type_id=quot;9quot;>county</place_type> RSS Request My Web Search API shut down <place_type place_type_id=quot;8quot;>region</place_type> Remaining, Supporting Classes announcement See information on constructing REST queries ImageSearchService/V1/imageSearch? <place_type place_type_id=quot;12quot;>country</place_type> The Weather RSS feed request follows simple HTTP GET syntax: start with a base URL and then add Wed, 21 Jan 2009 Introduction and Prerequisites <place_type place_type_id=quot;29quot;>continent</place_type> (?). Multiple parameters are separated by an ampersand (&). parameters and values after a question mark Parameter Value Description </place_types> appid=YahooDemo&query=Corvette&results=2 Re: Site Explorer API returns 999 Rate Limit appid string (required) The application ID. See Application IDs for more information. 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 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 put quotes around quot;exact phrasequot;. built-in geocoder means that you can specify a physical address or latitude/longitude coordinates for your map's http://weather.yahooapis.com/forecastrss 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 Mon, 19 Jan 2009 all returns results with all query terms. The API key passed was not valid or has expired. any returns results with one or more of the query terms. browser: Firefox 2, Internet Explorer 6 or 7, Opera 9 or Safari 3. Newer versions of these browsers are also phrase returns results containing the query terms as a phrase. supported. You can code your JavaScript applications usingcurrently unavailable 105: Service your favorite text editor or IDE. SUMMARY results integer: default 10, The number of results to return. The requested service is temporarily unavailable. max 50 An application ID is required to use the Yahoo! Maps AJAX API. You can get an application ID here. The Weather RSS feed request follows simple HTTP GET syntax: start with a base URL and then add 111: Format quot;xxxquot; not found start integer: default 1 by an starting result position to return (1-based). The finishing position (start The ampersand (&). For parameters and values after a question mark (?). Multiple parameters are separated 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. quot;xxxquot; 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 http://weather.yahooapis.com/ no value or 1 The service filters out adult content by default. Enter a 1 to allow adult 114: Invalid SOAP envelope 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 coloration any (default), color, The service returns only the images of the coloration specified (color or zip code or Location ID. forecastrss?p=FRXX0076&u=c 115: Invalid XML-RPC Method Call bw black-and-white). 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. 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 quot;YD-eQRpTl0_JX2E95l_xAFs5UwZUlNQhhn7lj1Hquot;; 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 API Explorer output string: xml The format for the output. If json is requested, the results will be returned here. (94089): (default), json, php in JSON format. If php is requested, the results will be returned in Serialized PHP format. API Explorer : flickr.places.getPlaceTypes <html> http://weather.yahooapis.com/forecastrss?p=94089 callback string The name of the callback function to wrap around the JSON data. The <head> following characters are allowed: A-Z a-z 0-9 . [] and _. If output=json has Or use the Location ID for Sunnyvale (USCA1116): <b><script type=quot;text/javascriptquot; not been requested, this parameter has no effect. More information on the src=quot;http://api.maps.yahoo.com/ajaxymap?v=3.8&appid=YD-
  • 35. var map = new YMap(document.getElementById('map')); … var currentGeoPoint = new dev YGeoPoint( _c.Lat, _c.Lon ); map.addMarker(currentGeoPoint); … … if (flickcurl_prepare(fc, quot;flickr.photos.geo.correctLocationquot;, parameters, count)) { … } … http://search.yahooapis.com/ ImageSearchService/V1/imageSearch? appid=YahooDemo&query=Corvette&results=2 http://weather.yahooapis.com/ forecastrss?p=FRXX0076&u=c
  • 36. dev YQL
  • 37. dev YQL
  • 38. dev Bindings YQL
  • 39. dev Bindings YQL
  • 40. dev Bindings YQL YQL stmt
  • 41. dev Bindings YQL YQL stmt select
  • 42. dev Bindings YQL YQL stmt select desc
  • 43. dev Bindings YQL YQL stmt select desc show
  • 44. 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.
  • 45. YQL Hosted web service 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 and join data across any
  • 46. YQL Statement Basics show: lists the supported tables desc: describes the structure of a table select: fetches data use: use an Open Data Table show tables desc social.contacts
  • 47. YQL Select Statement SELECT what FROM collection WHERE filter condition IN (sub-select) LIMIT n OFFSET n
  • 48. Demo: developer.yahoo.com/yql/
  • 49. Get any data: open data tables
  • 50. Open Data Tables YQL
  • 51. Open Data Tables YQL
  • 52. Open Data Tables YQL
  • 53. Open Data Tables YQL
  • 54. Open Data Tables Bindings YQL
  • 55. Open Data Tables YQL
  • 56. Open Data Tables YQL
  • 57. Open Data Tables Map YQL to Endpoint YQL
  • 58. 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
  • 59. Open Data Tables YQL
  • 60. Open Data Tables YQL
  • 61. Open Data Tables
  • 62. Open Data Tables
  • 63. USE Verb use ‘http://url-to-def.xml’ as tableName; select * from tableName where key=‘value’... Imports the Table definition Makes it available to following statements as tableName desc tableName - describes the def Acts like a First Class Data Source just like other YQL Tables.
  • 64. Community: github/datatables.org
  • 65. Share your work leverage the work of others to make access easier by sharing tables github repository: http://github.com/spullara/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
  • 66. Do it your way: <execute>
  • 67. YQL Execute extends Open Data Tables with server-side transformation using Javascript 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
  • 68. 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 (some of the) business logic of your application to the cloud
  • 69. <execute> Javascript server-side scripting No DOM, events etc, pure JS scripting E4X support - XML literals, filtering ... YQL no longer performs the GET request to the table binding URL Javascript has additional useful global objects y.rest, y.include, y.query... execute tag must return the data that will be the output of the YQL select
  • 70. hello world <?xml version=quot;1.0quot; encoding=quot;UTF-8quot;?> <table xmlns=quot;http://query.yahooapis.com/v1/schema/table.xsdquot;> <meta> <sampleQuery>select * from {table} where a='cat' and b='dog';</sampleQuery> </meta> <bindings> <select itemPath=quot;quot; produces=quot;XMLquot;> <urls> <url>http://fake.url/{a}</url> </urls> <inputs> <key id='a' type='xs:string' paramType='path' required=quot;truequot; /> <key id='b' type='xs:string' paramType='variable' required=quot;truequot; /> </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>
  • 71. Unified web+image <?xml version=quot;1.0quot; encoding=quot;UTF-8quot;?> <table xmlns=quot;http://query.yahooapis.com/v1/schema/table.xsdquot;> <meta> <author>Nagesh Susarla</author> <documentationURL>See search.web and search.images for more details</documentationURL> </meta> <bindings> <select itemPath=quot;results.resultquot; produces=quot;XMLquot;> <urls> <url></url> </urls> <inputs> <key id=quot;queryquot; type=quot;xs:stringquot; paramType=quot;queryquot; required=quot;truequot;/> </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>
  • 72. Search Netflix catalog <table xmlns=quot;http://query.yahooapis.com/v1/schema/table.xsdquot; https=quot;truequot;> <meta>...</meta> <bindings> <select itemPath=quot;quot; produces=quot;XMLquot; > <urls><url env=quot;allquot;>http://api.netflix.com/catalog/titles/</url></urls> <paging model=quot;offsetquot;> <start id=quot;start_indexquot; default=quot;0quot; /> <pagesize id=quot;max_resultsquot; max=quot;100quot; /> <total default=quot;10quot; /> </paging> <inputs> <key id=quot;termquot; type=quot;xs:stringquot; paramType=quot;queryquot; required=quot;truequot; /> <key id=quot;ckquot; type=quot;xs:stringquot; paramType=quot;variablequot; required=quot;truequot; /> <key id=quot;cksquot; type=quot;xs:stringquot; paramType=quot;variablequot; required=quot;truequot; /> </inputs> <execute><![CDATA[ // Include the OAuth libraries from oauth.net y.include(quot;http://oauth.googlecode.com/svn/code/javascript/oauth.jsquot;); y.include(quot;http://oauth.googlecode.com/svn/code/javascript/sha1.jsquot;); // Collect all the parameters var encodedurl = request.url; var accessor = { consumerSecret: cks, tokenSecret: quot;quot;}; var message = { action: encodedurl, method: quot;GETquot;, parameters: [[quot;oauth_consumer_keyquot;,ck],[quot;oauth_versionquot;,quot;1.0quot;]]}; 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(quot;Authorizationquot;, OAuth.getAuthorizationHeader(quot;netflix.comquot;, message.parameters)).get().response; } catch(err) { response.object = {'result':'failure', 'error': err}; } ]]></execute> </select> </bindings> </table>
  • 73. flickr.auth.frob <?xml version=quot;1.0quot; encoding=quot;UTF-8quot; ?> <table xmlns=quot;http://query.yahooapis.com/v1/schema/table.xsdquot; https=”true”> <meta> <sampleQuery> select * from {table}</sampleQuery> </meta> <bindings> <select itemPath=quot;rspquot; produces=quot;XMLquot;> <urls> <url>http://api.flickr.com/services/rest/</url> </urls> <inputs> <key id='method' type='xs:string' paramType='variable' const=quot;truequot; default=quot;flickr.auth.getFrobquot; /> <key id='api_key' type='xs:string' paramType='variable' required=quot;truequot; /> <key id='secret' type='xs:string' paramType='variable' required=quot;truequot; /> </inputs> <execute><![CDATA[ // Include the flickr signing library y.include(quot;http://yqlblog.net/samples/flickr.jsquot;); // GET the flickr result using a signed url var fs = new flickrSigner(api_key,secret); response.object = y.rest(fs.createUrl({method:method, format:quot;quot;})).get().response(); ]]></execute> </select> </bindings> </table>
  • 74. 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
  • 75. 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
  • 76. data
  • 77. YQL select * from internet http://developer.yahoo.com/yql Jonathan Trevor yql-questions@yahoo-inc.com