Hi all,
I try to understand the Issue-Tracker example, and hope that someone could
explain me a little bit more about the page and object flow.
Esspecially I'm interested how the DataModel / dataTable works, because I need
this in an application
Therefore I took the ProjectFinderBean, ProjectSelectorBean and
ProjectEditorBean and extended them with some debug messages.
So I could figured out the dependencies between this 3 classes, if I click on
one of the "View"-button:
| Caller: ProjectFinder #1
| - (Create)
| JSF(@Factory) -------------> findProjects
| ProjectSelector #1
| JSF ----------------------------------------------> (Create)
ProjectEditor #1
| @In
---------------------------> (Create)
| JSF ----------------------------------------------> getButtonLabl (x-times)
| JSF ----------------------------------------------> isCreateEnabled
(x-times)
| EndOfRequest (1)
destroy
| EndOfRequest (2)
getIssueList
| EndOfRequest (3) destroy
|
ProjectEditor #2
| "View"-button (4) @In
--------------------------> (Create)
| ProjectFinder #2
| (5) (Create) <---------------- @In
| isCreateEnabled
(x-times)
| select
| (6) getSelection <------------
|
------------------------------> setInstance
| JSF
getIssueList
|
.
|
.
|
.
|
The number in the brackets are the points which are not really clear to me.
So here (maybe some newbie) questions:
(1) and (3): Does the tranisient keyword destroies the instances or the end of
the request? Or both?
(2): Why is getIssueList() is called after destorying the ProjectEditorBean?
(4) and (5): Why is the @In is called after clicking on the "View"-button?
Because of (1) and (3) ?
(6): How does the new instance of the ProjectFinderBean know which list entry
was selected? Does this the PAGE-Scope on the @DataModel?
And one last question:
Why do I need session beans to pass the selected entry to another bean? Or is
there a solution to do that with 2 beans.
Thank you in advance
Marco
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