[jboss-user] [JBoss Seam] - Conversation management in a framework

[quilleashm]

Hi there,

I am building a mini-framework using Seam to allow our developers to build search and detail pages easily.  Screen page is basically search parameters + grid and the detail is just input fields with OK/Cancel.  The important thing is the basis of the Search and Detail components be reusable.

Sometimes input fields on a detail view need to be links/buttons through to another search page where an entity is selected and a relationship is established (many-to-one).

I'm trying to figure out how to do the conversation handling and state management/passing between the pages/components.  I have this page flow the user will follow.


Entity A Search -> Entity A Detail -> Entity B Search -> Back to Entity A Detail (after selection) -> Back to Entity A Search (after OK/Cancel)


And I need to pass to the selection from the Entity B Search back to the Entity A detail for population of one of the input fields.


So far I have thought of the following.

Entity A Search component has a conversation for storing the search state (pagination, current selection etc).  This conversation should never be propogated to other views (maybe this should be page scope but I use s:link which precludes this I think).

On selecting to Edit an entity redirect to the detail view (propogation=none).

Entity A Detail component starts a new conversation.

On selecting the button to the Entity B search redirect and propogate the conversation to the search view.

Entity B Search starts a nested conversation.  User selects.


Now I'm not sure how to pass the selected row(s) back from search B to detail A.  Maybe just have a conversational component that the detail A creates and B writes it's selection to?  Then when the nested conversation is popped the selected values will still be held in the parent conversation.  I plan on using "Conversation.endAndRedirect()" to get back to detail A from search B.

An additional problem is how to resume the search A conversation when detail A is done.  Should I just pass the conversation id as a parameter and have detail A switch to it when it completes?

Many thanks if you even read this far!

Any suggestions/critiquing welcome.


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