Is that hard to use modules in flex3 instead of flex4

Actualy i have seen a log where i seen that while implementing module application in flex 3 is hard to achieve please somebody clear my doubt actually i am using flex 3 and now i need to use modular application somewhere in that application. So is that create any problem to implement.

Hello!
It's a common task implement Modules in a Flex 3 application.
You can find a lot of references on internet:
http://livedocs.adobe.com/flex/3/html/help.html?content=modular_3.html
http://livedocs.adobe.com/flex/3/html/modular_5.html
http://livedocs.adobe.com/flex/3/html/modular_2.html
Best regards,
Pablo Souza
http://rectius.com.br/blog

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How can i use the project code instead of project xml?

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i hear that if i use the project code instead of project xml file,it will be more performant,is that true?
otherwise,how can i use the project code instead of project xml file?i mean, in "session.xml", i can use the "<project-xml>" tag to refer to the project xml file,then in my session bean,i get the server session by read the "session.xml" file.but if i use the project code,how can i refer it from the "session.xml"?the examples that come with the toplink installation only tell me how can i use the project xml file within the session bean,it don't give me any clue about using the project code in the sesion bean,who can give me a step-by-step instruction and code snippet?
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When you use the project-class you'll need to generate the source code and compile it into your system. Typically it is packaged with the persistent classes. You may need to configure your environment so that the class-loaders have access to these classes (same for the XML case).
When using the project-class you simply replace the project-xml entry like this:
<project-class>oracle.toplink.demos.employee.relational.EmployeeProject</project-class>
The DTD for the session.xml file is found at <TOPLINK_HOME>\core\sessions_4_5.dtd. It is also in the documentation at:
http://otn.oracle.com/docs/products/ias/doc_library/90200doc_otn/toplink.903/b10064/a-sessio.htm#634246
Doug Clarke
Product Manager
Oracle9iAS TopLink

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Is that hard to use modules in flex3 instead of flex4

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