From: [EMAIL PROTECTED] (Gary VanMatre)
Reply-To: "MyFaces Discussion" <[email protected]>
To: "MyFaces Discussion" <[email protected]>
Subject: Re: Modifying a JSf application to load pages from a database by
default
Date: Wed, 18 Apr 2007 21:46:47 +0000
>From: "Eugine F" <[EMAIL PROTECTED]>
>
> Hello experts,
> I have asked this question before but may be not properly. I am
designing a
> JSF application. I would like that the views to be rendered should be
taken
> by default from a data base. As far as I know the viewhandler is
> responsible for the creation of views. I have looked at the
implementation
> of this class. I could see how the view is got or created got from the
> request but I could not see where or how the JSF implementation searches
for
> the resource say "projects.jsp" or "projects.xhtml" in the web
application
> directory to be able to render it. That is the important section I need
to
> be able to modify my application to get the views from the data base.
Could
> any one give me a clue?
If you are using JSP, the view handler dispatches to the target JSP. The
dispatch is a forward that invokes the JSP building the component tree
while rendering the document. This logic is in the renderView method of
the view handler [2].
externalContext.dispatch(viewId);
I don't think you will be able to store the content of the view in a DB if
you are using JSP but you might be able to do this using an alternative.
With a few modifications, Shale Clay [1] would allow you do store templates
in a database. You could store the content as markup fragments or maybe in
database tables.
I've played with this idea but have not found the interest to take it to
the next level. There is a project in the shale sandbox that uses JPA to
store metadata that could be used to construct the component tree [3].
This method would be like maintaining an XML file [4] in a DB.
Or, maybe the better approach would be to store markup fragments in a DB or
better yet a Jackrabbit repository? Clay has a couple parsers that are
snapped in to read different types of markup [5].
[1] http://shale.apache.org/shale-clay/index.html
[2]
http://svn.apache.org/viewvc/myfaces/core/trunk/impl/src/main/java/org/apache/myfaces/application/jsp/JspViewHandlerImpl.java?view=markup
[3]
http://svn.apache.org/viewvc/shale/sandbox/shale-clay-jpa/pom.xml?view=log
[4]
http://svn.apache.org/viewvc/shale/framework/trunk/shale-clay/src/main/resources/META-INF/clay-config.xml?view=markup
[5]
http://svn.apache.org/viewvc/shale/framework/trunk/shale-clay/src/main/java/org/apache/shale/clay/config/ClayTemplateParser.java?view=markup
> thanks
> Eugine
>
Gary
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Hello Gary,
I asked some one whbo is versed with JSf this question today and he told me
about shale also. SO I woould have a look at it. I'll give a feed back on
the issue.
Thanks
Eugine
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