How to implement a "plugin system" in JSF?

Hi!
I would like to make a system with can be extended using JAR (or WAR?) plugins...I know how to do using Swing but I'm new in JSF and I have a lot of doubts, I'm trying to find something on the net, I know I can force the navigation to go to a specific page (I can put the entry page of every plugin in a database) but can I mix 2 war and connect one to another (like for example with an entry page from the first one to the second one)?
if not what can I do? Am I have to rethink the thing?
thanks a lot!!
Demetrio Filocamo

Swing is a desktop tecnology.
JSF is a Web tecnology.
If the 2 Wars are deployed as two different web sites, then you can do navigation bettween them, like you do on Html.

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here is the stages I see:
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Edited by: Adam-Z. on Dec 19, 2009 12:34 AM

well, English is not my native, so I find it hard to describe, sometimes I feel the lack of words to describe what I want, and I have to take a break, and use a dictionary to find the right word to use, and sometimes these are basic words that I miss so I'm sorry if I'm not clear.
And this will be required for every single plugin in exactly the same way? If not then each plugin should include a factory.Yes, they are all saved the save way, every plugin has a method that create an instance of a basic class J2MeDataChunk.
The types of the data chunks are defined on the J2Me platform and only there.
The reason that they are defined on the J2Me platform is because of the first limitation of the J2Me platform.
1. I cannot import into the build path of the project any external libraries.Therefore in the future when I would like to add more chunk types, I would have to add them into the J2Me project as classes, and not as a jar in the build path, but the plugin would have to refer to the J2Me project and to know which chunk type it is going to edit.
Each plugin knows how to edit a different type of J2MeDataChunk, the data chunks saves them selfs into a data output stream using a serialize method in each of them, and the serialize method is invoked from the plugin itself when the user (me) press the save button.
"produce"? You mean a factory?No, I meant that the object I posted earlier (J2MeDataChunkType) is an object that represent the type of the data chunk for each of the data chunk types, and that there can only be one instance of the object that represent the type of the data chunk, and that single instance of the object that represent the type of the data chunk is the one that can create new instances of that data chunk type, it can create an empty data chunk,or to deserialize the data chunk type using a DataInputStream, and it has an abstract method, that returns Swing component only on the J2Se platform (a class that extends the J2MeDataChunkType object on the J2Se platform that overrides the abstract method for the editing Frame/Panel).
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The other two limitations are not limitations at all as far as I can see.well the third one might not be a limitation but it is a pain in the .. S since I have to implement every object I want to serialize myself
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for(Object o: objectList)very useful very efficient to use...
and how could I leave generics out... wow no generics... terrible oh, and enums, no enums... hell if there were enums on J2Me... life would have been less gray.
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well since I try to build a bridge between the J2Me and J2Se platforms, and since there are some limitation to the J2Me platform* I needed to
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instance of this object although it is inheritable,
Memory in terms of the class or the instance? If the instance then it doesn't have much to do with this discussion. If the class then that impacts >your design because with a limited memory size and large impact then unloading might come up - and that requires a class loader.well this design actually adds an extra class for each type I decide to add to my platform although at the end I intend to join all the objects that represent the type of the data chunk into one object only on the J2Me platform which would actually add only one class to the memory on the phone, it is just easier for me to see things clearer now as I design this bridge application between the platforms, besides it allows maximum flexibility to create new types of chunks, and that was my main aim, to make as many types to be saved on files that I can transfer via a wireless onto the phone and the platform on the phone would know exactly what to use them the data chunks for with out any user intervention.
as for instances, this way I reduce the memory each of the chunks would use and in the total calculation it would improve memory usage while creating objects from these chunks.
Presumably you are managing the data items because the base class is going to provide functionality relevant to them.Right, the base class is the most common ground I could find for all the chunks together.
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Per your requirements there is no path nor jar is needed nor can be specified.well I hope that by now you did get that I generalized all the data chunk types that I created into one basic object which I posted earlier, this object handles everything, and the plugin main object would be design on the J2Se platform and would extend that J2MeDataChunkType class and it would return the Swing frame/panel when the J2Se application calls the getPanel method and an empty chunk on the getDataChunk() method.
well, in my case it would extend an abstract class from the J2Me platform, maybe two object I'm still thinking about a better implementation >> so the plugin would be more simple, consist of only one object, that needs to be loaded.It shouldn't matter to you how the class is implemented.But of course it does, I want to make my life as simple as possible when I implement new plugins, having one object with abstract method, that when I extend it Eclipse would automatically add the abstract method for me to implement, and just a short glimpse at another implementation of the plugin would let me design another plugin in seconds.(with out making the GUI for the data chunk editing obviously).
I think I got my head around this, especially now that it feels like I could explain what I'm making better in words.
Thank you for taking the time to respond to my posts, I see you currently have 37k post so I guess you are a very quick typer, yet you take the time to try and understand my design. Thank you.
Adam Zehavi.

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