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Understanding Flex Data Services
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Understanding Flex Data Services

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With ColdFusion, why should I care about Flex Dataservices (aka Blaze DS)?

With ColdFusion, why should I care about Flex Dataservices (aka Blaze DS)?

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Understanding Flex Data Services Understanding Flex Data Services Presentation Transcript

    • Thomas Burleson
    • Principal Architect
    Understanding Flex 2 Data Services June 28 th – July 1 st 2006 [email_address] “ With ColdFusion, why should I care about FDS?”
  • Flex 2 Data Services (FDS)
    • What is FDS?
    • Why use FDS?
    • Show me how…
    June 28 th – July 1 st 2006
  • What is FDS? June 28 th – July 1 st 2006 Flex 2 Data Services (FDS) RPC Services Data Services Message Service Flex 2.0 Technology Stack Flex 2 Framework MXML ActionScript Flex Class Library Flash VM AS2 AS3 FlexBuilder
  • Flex 2 Flash Player June 28 th – July 1 st 2006
    • Distributed Free
    • Upgrades Automatically
    • Version Detection
    • Downloaded from Adobe
    FlexBuilder Flash VM AS2 AS3
  • Flex IDE June 28 th – July 1 st 2006
    • Developer tool costs < $600 Includes source code
    • Does not support Flex 1.5
    • No J2EE Server required
    • No Distribution licenses of SWFs
    Flex Framework MXML ActionScript Flex Class Library FlexBuilder (Eclipse)
  • Flex 2.0 Server Components June 28 th – July 1 st 2006
    • CPU-based Server Costs
    • Leverage Java Messaging System (JMS)
    • Used with J2EE servers;
      • JRun, ColdFusion, WebLogic, Websphere
    • Requires CPU-based licensing
    Flex 2 Enterprise Services RPC Services Data Services Message Service FlexBuilder
  • Why use FDS?
    • Server-side Security
    • Performance & Functional Testing
    • Client Synchronization
    • Collaboration
    • Large volumes of data with paging
    • Data- Push Features
    • Real-time data delivery (e.g. medical, investment, decision support systems, etc)
    June 28 th – July 1 st 2006 Flex Data Services RPC Services Data Services Message Service
  • Flex 2.0 RPC Services June 28 th – July 1 st 2006 FDS JSP/Servlet (XML) HttpService (XML) WebService(SOAP) RemoteObject(Java ) Web Svc (SOAP) JAVA (EJB/POJO ) HTTP SOAP EJB
    • HTTPService, SOAP, & RemoteObject(CFC) is FREE in Coldfusion 7.x… FDS2 is not req.
    • FDS 2.0 is required for RemoteObject( Java ) featuresc
    ColdFusion /J2EE Server HttpService (XML) WebService(SOAP) CFC RemoteObject
  • Flex 2.0 Message Services (Publish & Subscribe) June 28 th – July 1 st 2006 FDS JSP/Servlet (XML) HttpService (XML) WebService(SOAP) RemoteObject(Java) Web Svc (SOAP) JAVA (EJB/POJO ) HTTP SOAP EJB ColdFusion /J2EE Server Messaging Services Adapter API Java Message Service (JMS) MQSeries Tibco Others
  • Messaging with ColdFusion & Flex June 28 th – July 1 st 2006 Other Gateways Flex Messaging Event Gateway ColdFusion 7.x Enterprise Server 1 ColdFusion 7.x Enterprise With FDS2 Server 2 HTML App Flex App RMI See notes! FDS Messaging Services ColdFusion Event Gateway Adapter
  • Flex & Coldfusion June 28 th – July 1 st 2006 Flex Data Services Coldfusion Server (7.x or higher) Web Browser HTML XML CFM CFC Event Gateway Flex SWF(s) Java Remoting ( via AMF ) WebServices XML Proxies XML WebServices CFC Remoting See notes!
  • Flex 2 Data Services: Real-Time Data Sharing (via RTMP or HTTP) June 28 th – July 1 st 2006 Object Adapter Adapter API FDS JSP/Servlet (XML) HttpService (XML) WebService(SOAP) RemoteObject(Java) Web Svc (SOAP) JAVA (EJB/POJO ) HTTP SOAP EJB Messaging Services Adapter API Java Message Service (JMS) MQSeries Tibco Others O-R Adapter JDBC Adapter DAO Data Synch Services RDMS Oracle, Sybase, DB2 SQLServer ColdFusion /J2EE Server RPC RTMP/HTTP
  • Local Persistence Service
    • Allows offline data access
    • Provides common API for creating, reading, updating, and deleting local data
    • Adapters are used for different types of local data storage devices
    • Local Shared Objects adapter is available in Flex 2.0… FDS is not required
    • Offline data synchronization supported through combination of local persistence and messaging services… FDS is required !
    June 28 th – July 1 st 2006 LSO LSO Adapter Local Persistence Service
  • Show me how…
    • Using C-FDS for:
      • High-performance, SECURE access to CFCs with native data results
      • Coldfusion application  Flex application messaging
      • Note: Mike Nimer’s presentation will show CFC<->Actionscript native translations during data marshalling
    • Using FDS for:
      • Proxy security & framework for access to distributed data systems.
      • Coldfusion application  Flex application 2-way messaging
      • Paging large volumes of data
      • Real-time Data Sharing
      • Messaging for Dashboard features
    June 28 th – July 1 st 2006 Introduce Flex 2 Actionscript components for FDS and show source examples: See notes!
  • Using CFCs with C-FDS June 28 th – July 1 st 2006 <mx:RemoteObject id=&quot;myCfc&quot; destination=&quot;ColdFusion&quot; source=&quot; myApplication.components.User “ result=&quot;my_CFC_handler(event)&quot; /> a) Modify /WEB-INF/flex/services-config.xml to add a “named” destination
    • Specify in .mxml file a CFC component with its FULL class path…
    • this may be a security concern!
    • Modify FDS configuration file to specify an private, custom ID for the desired
    • classpath. Use this ID in the Flex code… SECURE and PRIVATE.
    b) <mx:RemoteObject id=&quot; myCfc &quot; destination=&quot; CustomID &quot; result=&quot;my_CFC_handler(event)“ /> See code samples…
  • FDS for Data Sharing June 28 th – July 1 st 2006
    • User is ordering online and is submitting an invalid credit card for his order.
    • Instead of get some abstract error… an online representative “pops-up” asking if the buyer needs help.
    • The buyer says yes and describes the problem.
    • The rep fixes the fields REMOTELY and submits the buyers form REMOTELY .
    • The buyer receives confirmation
    • The rep thanks the buyer and logs-off.
    Real-time, 2-way data sharing (e.g. medical insurance forms, decision support systems, etc)… Let’s review a Flex application to allow online support to help with credit card problems on a visitors form. Scenario: See code and demo…
  • FDS for Dashboards June 28 th – July 1 st 2006
    • UserA is ordering online orders several products. UserA submits order.
    • UserB is ordering online with several products. UserB submits order.
    • Etc.
    • Each time an order is submitted the dashboard AUTOMATICALLY adjusts its charts/graphs of gross sales and available inventory.
    Real-time, data aggregation (e.g. medical, decision support systems, etc)… Let’s review an application to allow multiple online buyers to submit orders that update sales and inventory dashboard. Scenario: See code and demo…
  • Use FDS 2 with ColdFusion
    • Server-side Security
    • Performance & Functional Testing
    • Collaboration
    • Large volumes of data with paging
    • Data- Push Features
    • Client Synchronization
    • Real-time data delivery (e.g. medical, investment, decision support systems, etc)
    June 28 th – July 1 st 2006 Flex Data Services RPC Services Data Services Message Service