Well one the selling argument of most GWT-based framework is "no plug in required" or "based on open standard" And i think it s a good one. Flex needs Flash and since Steve Jobs was so nice to Flash the popularity of Flash is schrinking a bit :)
Also because there is no way around MXML/AS3 to build Flex applications(atleast until gwt4air), The UI of your application and the backend will be implemented in different languages, meaning you will need a middleware like Blase DS to pass objects from and to the UI . Blase DS is great but no middleware at all is even greater. With GWT no need of a middleware. And if the backend is implemented in Java, GWT becomes superrocket :) And if you want to integrate a Flex UI Element in an existing HTML/JS/CSS based application you get into serious troubles(for the reasons i said in one of my post). One of our customer wanted to have a grid component like this one : http://www.gwt4air.appspot.com/#com.iwobanas.controls.MDataGrid with live search and PDF and Excel export. We could not find a good GWT-based solution for that. So we found ourself embedding the Flex compoment in the GWT application and having some nightmares maintaining that. Then i thought "man if i could just do this using a single GWT API :) " Personally i think Flex is more powerfull then any GWT library out there.(And i ve tried them all) The richness and the features of Flex are just not matched(yet) But because of MXML/AS3 flex was kind of a no go for Java projects. Hopefully gwt4air will bring more GWT developer to discover the power of Flex. 2011/5/26 Jay Roy <[email protected]> > >>> If i understand what you mean, you want to repopulate the grid > everytime the data are updated in the backend right ? > > exactly. yes i think u r right i can do it using timer object. so i am > guessing flex does provide asynchronous support in its own way :) > I would be curious to see what an AJAX framework like GWT can do which flex > cant. > > thanks for your input. > > > > On Wed, May 25, 2011 at 9:34 PM, Alain Ekambi <[email protected] > > wrote: > >> If i understand what you mean, you want to repopulate the grid >> everytime the data are updated in the backend right ? >> >> I think Blase DS does not support pushing Data to the client. Atleast not >> the free version. >> >> A solution could be to set up a timer that will poll data from the >> backend every 5s ? >> I think you can do that in as3 >> >> Dont get me wrong i dont want to keep you from using GWT, i just think >> that in your case there is a solution that is more effcient and esay to >> maintain then using GWT. But if you dont mind having some overhead plus a >> language explosion (MXML/AS3, JS, Java) and architecture problem in your >> project. I can tell you what our first solution to solve this type of >> problem was >> >> 2011/5/26 Jay Roy <[email protected]> >> >>> let me explain with a simple example >>> We have a flex screen with a data grid. The data in data grid is >>> populated with java collection. The java collection contains stock data >>> which comes from backend. In the backend every 0.5 second the stock data in >>> collection is updated(we get market feed of data). >>> >>> so every 0.5 second we need to refresh the flex data grid and update it >>> with the backend data. >>> >>> So the question now is we need to make a asynch call every 0.5 sec to >>> fetch the updated data. >>> >>> I am using blazeds to get the java collection but i dont think blazeds >>> can be used to make asynchronous calls. That is where we want to use ajax to >>> make the asynchronous call every 0.5 sec. >>> >>> thanks. >>> On Wed, May 25, 2011 at 8:32 PM, Alain Ekambi < >>> [email protected]> wrote: >>> >>>> What exactly do you mean with "incorporate ajax" ? >>>> Do you mean making async call to the server ? >>>> If yes cant you do that with Blase DS ? >>>> >>>> Like i said before i dont know if the road mxml/as ->External Interface >>>> -> js -> gwt -> backend and back is effective >>>> because you are adding a lot of overhead just to call methods in the >>>> backend. >>>> >>>> >>>> >>>> 2011/5/26 Jay <[email protected]> >>>> >>>>> Thanks for response. We are already using blazeds to communicate >>>>> with our remote spring services. Our present architecture: >>>>> Flex talks to backend java objects using spring blazeds. >>>>> >>>>> I want to incorporate ajax so What I had in mind is >>>>> Flex mxml/as screen invokes JavaScript invokes java backend? >>>>> Would that be correct? >>>>> >>>>> Thanks >>>>> >>>>> On May 25, 2011, at 5:58 PM, Alain Ekambi <[email protected]> >>>>> wrote: >>>>> >>>>> Well the suggestion was for the "Integrating Flex with GWT part". >>>>> >>>>> >>>>> If you come from Flex learning GWT should not be a big problem >>>>> because the development model is very similar. >>>>> The official GWT Documentation is always a good point to start: >>>>> <http://code.google.com/webtoolkit/doc/latest/DevGuide.html> >>>>> http://code.google.com/webtoolkit/doc/latest/DevGuide.html >>>>> And if you are really really stucked there is a guy called *Thomas >>>>> Broyer* here in the community. You cant miss him :) >>>>> >>>>> Making a GWT RPC call from an AS3/MXML based Flex application is not >>>>> that easy and adds a lot of overhead to your application. >>>>> >>>>> We had the same issue with one of our Flex applications. This is one of >>>>> the reasons that motivated me to create a GWT API for Flex, so one could >>>>> use >>>>> Java everywhere instead of mixing MXML/AS3(Flex UI), JavaScript(External >>>>> Interface to communicate with the GWT ) and Java(GWT + backend) >>>>> >>>>> If your Flex application is MXML/AS3 based the best way should be to >>>>> use something like Blase DS. >>>>> >>>>> If you want to use a GWT API to build a Flex application you can have >>>>> a look at gwt4air. >>>>> >>>>> Best, >>>>> >>>>> Alain >>>>> >>>>> >>>>> >>>>> >>>>> 2011/5/25 Alain Ekambi < <[email protected]> >>>>> [email protected]> >>>>> >>>>>> May i suggest you Gwt4Air ? :) >>>>>> <http://code.google.com/p/gwt4air/>http://code.google.com/p/gwt4air/ >>>>>> >>>>>> >>>>>> 2011/5/25 Jaggernat < <[email protected]>[email protected]> >>>>>> >>>>>>> hi guys >>>>>>> >>>>>>> I need to learn GWT and impliment a simple solution using GWT. I come >>>>>>> from flex background. >>>>>>> can anyone point me what the important concepts in GWT is? and in >>>>>>> what >>>>>>> order do i learn? >>>>>>> >>>>>>> Goal: >>>>>>> we are currently developeing a trading app using flex screens but we >>>>>>> want to use ajax framework GWT to make the asynchronous backend calls >>>>>>> to our spring-java backend. >>>>>>> (Is using flex Fabridge an option to integrate GWT with flex?) >>>>>>> >>>>>>> any help greatly appreciated >>>>>>> thanks. >>>>>>> >>>>>>> -- >>>>>>> You received this message because you are subscribed to the Google >>>>>>> Groups "Google Web Toolkit" group. >>>>>>> To post to this group, send email to >>>>>>> <[email protected]> >>>>>>> [email protected]. >>>>>>> To unsubscribe from this group, send email to >>>>>>> <google-web-toolkit%[email protected]> >>>>>>> [email protected]. >>>>>>> For more options, visit this group at >>>>>>> <http://groups.google.com/group/google-web-toolkit?hl=en> >>>>>>> http://groups.google.com/group/google-web-toolkit?hl=en. >>>>>>> >>>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> >>>>>> GWT API for non Java based platforms >>>>>> <http://code.google.com/p/gwt4air/>http://code.google.com/p/gwt4air/ >>>>>> <http://www.gwt4air.appspot.com/>http://www.gwt4air.appspot.com/ >>>>>> >>>>>> >>>>>> >>>>> >>>>> >>>>> -- >>>>> >>>>> GWT API for non Java based platforms >>>>> <http://code.google.com/p/gwt4air/>http://code.google.com/p/gwt4air/ >>>>> <http://www.gwt4air.appspot.com/>http://www.gwt4air.appspot.com/ >>>>> >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "Google Web Toolkit" 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/google-web-toolkit?hl=en. >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "Google Web Toolkit" 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/google-web-toolkit?hl=en. >>>>> >>>> >>>> >>>> >>>> -- >>>> >>>> GWT API for non Java based platforms >>>> http://code.google.com/p/gwt4air/ >>>> http://www.gwt4air.appspot.com/ >>>> >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Google Web Toolkit" 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/google-web-toolkit?hl=en. >>>> >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "Google Web Toolkit" 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/google-web-toolkit?hl=en. >>> >> >> >> >> -- >> >> GWT API for non Java based platforms >> http://code.google.com/p/gwt4air/ >> http://www.gwt4air.appspot.com/ >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Google Web Toolkit" 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/google-web-toolkit?hl=en. >> > > -- > You received this message because you are subscribed to the Google Groups > "Google Web Toolkit" 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/google-web-toolkit?hl=en. > -- GWT API for non Java based platforms http://code.google.com/p/gwt4air/ http://www.gwt4air.appspot.com/ -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" 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/google-web-toolkit?hl=en.
