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Flex DataServices necessary working with Java

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Hello,



Im pretty new in Flex but like to know a few things for my
company.



The situation is this:



We have a very large webproject with about 6000 JSP-Pages.
Now we want to use new web 2.0 technologies to gain more usability,
maintainability......



Its a Java J2EE webproject with POJO´s and everything
that comes with it.

Now I have a problem:

I already tried the communication with the flex dataservices.
I tried it like this:



This is the remote part in my mxml-File:

<mx:RemoteObject id="myRemoteObject"

destination="myRemoteObjectService"

result="handleResult(event)"

fault="handleFault(event)"/>



And this is the part in my remoting-config:

<default-channels>

<channel ref="my-amf"/>

</default-channels>

<destination id="myRemoteObjectService">

<properties>

<source>myRemoteObjectService</source>

<scope>application</scope>

</properties>

</destination>



This works fine of course. But now I have a uestion if the
dataservices are a must-have for this project. Maybe there are
possibilitys to call Java-methods on the server using a different
way for example with compiler-options?!?



Because if I only have FlexBuilder2, there is no installation
of the flexdataservice in my J2EE Server and so there is also no
remoting-config, right? Its the problem because of the costs of the
dataservices. I think I cant use the express-Version in that
project because of multiple users (over 100).



If there is a possibility, please let me know with only a
short example or a place where I can read about this in a precise
way.



Thank you very much for the help!

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