Installation startingPageId at initialization ApplicationLifecycleAdvisor

[ivans]

Why obligatory installation startingPageId is required at initialization ApplicationLifecycleAdvisor?
In some situations in it there is no necessity.

[ivans]

It is possible to remove or bypass this restriction?

[lstreepy]

The current implementation classes expect there to be an "initial" page (view) to display. How is your UI organized if this is not the case? If your UI model is sufficiently different, you may need to override some of the initial application construction logic to remove the use of an initial page id. I can't really provide much help without knowing what you're trying to accomplish.

Larry.

[benoitx]

One possibility, an MDI application may not need to have 1 internal frame on startup.
Rgds
Benoit

[ivans]

Thanks all for the answer!

Larry, possible some variants of usecase application. Therefore it is impossible to set starting page. It is possible to make certainly something like " Welcome page ", but it only one of variants to bypass necessity of the use of an initial page id.
Where I need to override some of the initial application construction logic to remove the use of an initial page id?

Ivan.

[ivans]

One possibility, an MDI application may not need to have 1 internal frame on startup.
Rgds
Benoit

StartingPageId required in the ApplicationLifecycleAdvisor.

public abstract class ApplicationLifecycleAdvisor implements InitializingBean {
...
    public void afterPropertiesSet() throws Exception {
        final Properties systemProperties = System.getProperties();
        if (systemProperties.get(EXCEPTION_HANDLER_KEY) == null) {
            systemProperties.put(EXCEPTION_HANDLER_KEY, getEventExceptionHandler().getName());
        }
        Assert.state(startingPageId != null,
                "startingPageId must be set: it must point to a page descriptor, or a view descriptor for a single view per page");    }
...
}

[lstreepy]

The answer to "what needs to be overridden" depends on what you want your application to do when it first starts up. That's why I asked the question.

But, since you quoted Benoit's comment about MDI applications, then you should probably do a search on this forum for MDI support. There have been several threads on the topic and they may have the answers you're looking for.

Larry.

[bpolka]

lifecycle advisor is one place but there is also DefaultApplicationWindow that will implicitly require pageId that wil have to refer to an element (view or page descriptor) in your app context.

It is not that simple to bypass it. Some of the methods that you would needto overwrite are final so you would have to come up with your own hieararchy.

The way of least resistance for me was to create a NoBannerPage and NoBannerCapablePageApplicationWindow. Then just declare the empty page in your app context and empty page is displayed.

If you want code for those pages and instructions on how to set them up, let me know and I will zip them up for you.

[ivans]

Thanks for the reply, Larry.

I do not want to set View by default since in this case it is not present
There are two variants of the decision of a problem:
1) ApplicationWindow 0..1 ApplicationPage (now ApplicationWindow 1..1 ApplicationPage)
2) ApplicationPage 0..* View (now ApplicationPage 1..* View)

Ivan.

[ivans]

Thanks for the reply!

lifecycle advisor is one place but there is also DefaultApplicationWindow that will implicitly require pageId that wil have to refer to an element (view or page descriptor) in your app context.

I know. But mdi DesktopApplicationWindow (about which spoke benoitx) not required default view.

It is not that simple to bypass it. Some of the methods that you would needto overwrite are final so you would have to come up with your own hieararchy.

The way of least resistance for me was to create a NoBannerPage and NoBannerCapablePageApplicationWindow. Then just declare the empty page in your app context and empty page is displayed.

If you want code for those pages and instructions on how to set them up, let me know and I will zip them up for you.

I with gratitude shall take part your help.

P.S. Sorry for english. I use PROMT.