When developing a rich Internet application, one investment in server-side infrastructure.
One luxury of rich Internet application development is the seamless means by which server integration now challenge is deciding which functionality the application can and should execute on the client, and which functionality should reside on a server. In evaluating these tradeoffs, you might take into account issues such as performance, scalability, and security. In other cases the decision may simply be dictated by the desire to provide a rich user experience based on an existing occurs. With a web application, a request to the server for data typically results in a page refresh for the user. With an RIA, however, the user is oblivious to the distinction between client-side and server-side processing. Requests for data do not interrupt the flow of control; instead, data requests are made asynchronously and the application is notified when these results become available. There are a number of mechanisms available for integrating a Flex RIA with server-side data. Flex data access components use remote procedure calls (RPCs) to interact with server environments. There are three Flex data access components: *HTTPService*: Passes textual data over HTTP. This is often used to fetch RSS feeds, read XML generated by a server, or simply pass text-based data from server to client. (without LCDS) *WebService*: Allows a Flex application to invoke server-side web services using SOAP and handle the results of web service calls. These web services may reside on the server that has served the rich Internet application or may call third-party web services through a proxy on the server. (without LCDS) *RemoteObject*: Allows a Flex application to directly invoke methods on Java classes residing on the application server that has served the RIA. Data is transferred in binary format (Adobe Action Message Format or AMF) over HTTP or HTTPS, with the server translating Java and ActionScript objects as they pass over the wire. (achieved through LCDS/ blazeDs etc) Thanks, Renu On Wed, Aug 19, 2009 at 9:57 PM, mahesh bab <[email protected]>wrote: > In order to communicate with servlets,Jsps and remote objects those r > available in server side components > > Regards > D.Mahesh Babu > > On Wed, Aug 19, 2009 at 7:52 AM, chandu <[email protected]>wrote: > >> >> Hi Friends, >> >> I am new to flex and presently started working on LCDS ,i have >> small question and need clarification, >> >> a) what is the difference between Flex application using LiveCycle >> DataServices and flex application without using Live Cycle Data >> Services . >> >> b) what is the basic purpose for LCDS in Flex Application. >> >> Kindly clarify my doubt and so please explain when we go for with or >> without LCDS. >> >> waiting for reply.. >> >> Regards, >> Chandu. >> >> >> > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Flex India Community" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/flex_india?hl=en -~----------~----~----~----~------~----~------~--~---
