Facebook in Java

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Facebook
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Facebook provides a lot of documentation on its wiki and other pages, which can make it difficult to find specific itemsWe believe that these are the URLs that developers will access frequently:
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Application Verification Program http://developersfacebookcom/verificationphp Client Libraries http://wikidevelopersfacebookcom/indexphp/Client_Libraries Custom Tags Directory http://wikidevelopersfacebookcom/indexphp/ Custom_Tags_Directory Developer Application wwwfacebookcom/developers Developer Wiki http://wikidevelopersfacebookcom/indexphp/Main_Page Developer Forum http://forumdevelopersfacebookcom/ Developer Test Accounts wwwfacebookcom/developers/become_test_accountphp Developer Test Consoles http://developersfacebookcom/toolsphp Facebook Open Source http://developersfacebookcom/opensourcephp fbFund http://developersfacebookcom/fbFundphp tab=about Guiding Principles http://developersfacebookcom/get_startedphp tab=principles Platform Statistics wwwfacebookcom/press/infophp statistics Terms of Service wwwfacebookcom/termsphp
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Appendix A Resources
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Developer Tools
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These websites contain tools that enable or assist with Facebook development that we cover in this book:
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APC http://phpnet/apc Firebug wwwgetfirebugcom Firebug Lite http://getfirebugcom/litehtml Memcached wwwdangacom/memcached Web Developer Toolbar http://chrispederickcom/work/web-developer YSlow http://developeryahoocom/yslow YUI Library http://developeryahoocom/yui
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Facebook News
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These websites provide news updates for developers and users:
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All Facebook http://allfacebookcom Developer News http://developersfacebookcom/newsphp Facebook News http://blogfacebookcom/blogphp Inside Facebook wwwinsidefacebookcom
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Appendix B
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Beta Features
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Facebook constantly adds new features for developers to use; however, they all must go
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through a beta period before Facebook releases them or changes the Platform to use them For some features, the beta period can be long, and some features never make it out of beta For example, as of this writing, the Data Store application programming interface (API) has been in beta for almost two yearsThis appendix quickly overviews the most important features that are currently in beta
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Add Page Referrer
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Tracking how parts of an application are used is critical, as discussed in 14, Measuring Application Success In that chapter, we went over how Facebook Insights can show which parts of the application are being used and how users respond to its messagingThe Add Page Referrer feature allows developers to track the origins of application installs by adding a new parameter, called app_ref, to the end of links that point to the application s authorization page For example, links in an invitation might have &app_ref=invite appended, whereas links on a canvas page might have &app_ref=canvasThe results for these tracking parameters are shown in the application s Insights
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Stream
With Facebook s switch to a real-time streaming update model, it realized that it needed to provide developers with a new way to access the Feed Facebook also wanted to provide developers access to the stream from outside of Facebook, whether it is on an external website, a mobile application, or a desktop applicationThe new Open Stream API replaces the existing Feed publishing model and allows applications to read content from the stream, publish their own content, and manage comments or ratings for individual Feed storiesThis feature is important because it represents the future of developer access to the heart of Facebook s information flow If you check out any of Facebook s beta features, make it this one
Appendix B Beta Features
Custom Tags
Custom tags provide a way for developers to define their own Facebook Markup Language (FBML) tagsThese tags can be used within an application to hold common fragments of FBML to reduce bandwidth for the application by sending only the custom tag across the wireThey can also be made public and shared in Facebook s Custom Tags Directory so that any application can use them Custom FBML tags can be defined to accept parameterized input, such as most FBML tags, and can include both FBML and Facebook JavaScript (FBJS) codeThey even allow for sharing functionality across applications, such as the Family Crest tag, which shows a family crest for a surname, or the iLike tag, which displays a users favorite songs and playlists
Data Store API
The Data Store API is an object-based database that s hosted on Facebook s servers with the goal of allowing applications to deploy quickly without having to worry about scaling their own database server Object Types are like tables in traditional relational databases with the object s properties representing columnsAn instance of an Object is like a table row For small sets of data, the Data Store API is convenient; however, larger amounts of data have caused access times to become increasingly slowThis feature has also been in beta for a long time with minimal updates, so it is not clear if it has a long-term future