Re: Can jsp-file be a JspServlet init-param?

2010-09-11 Thread David Jencks

On Sep 8, 2010, at 11:48 PM, Mark Thomas wrote:

 On 09/09/2010 00:54, David Jencks wrote:
 I've recently rewritten the geronimo-jetty integration to work off the 
 servlet 3 *Registration classes.  This works great except for servlets 
 backed by jsp files, since there's no way to tell the servlet container 
 through the ServletRegistration interface that its actually something with 
 this extra jsp file name that needs to be added through some special process 
 into the request.
 
 That looks like an oversight in the 3.0 spec.

I'm not sure why you think that.  A servlet extension mechanism such as a jsp 
engine can use the  servlet 3 API to add servlets directly.  I think it would 
make more sense to completely remove any mention of jsp from web.xml and the 
servlet spec and run jsps off a separate configuration file.

 
 However, its easy to subclass the JspServlet so it gets the jsp file value 
 from an init param, and of course its easy to set the init param from the 
 web.xml.  This appears to work fine.
 
 Is there some reason I've missed that this is a bad idea?
 
 Well, it would be container specific rather than defined by the spec but
 since the spec offers no way to define it, I don't see there is a choice.

The existing way of using a servlet request attribute to feed the jsp file to 
the instance of the jsp servlet set up for a particular servlet element is also 
not mentioned in the spec.  It does need some special attention on each 
request.  My proposal moves all the jsp-aware code in catalina to the deploy 
phase and allows treating these explicitly set up JspServlet instances just 
like any other servlet.

 
 If not, would the jasper community consider a patch to modify the JspServlet 
 so it directly looks for such an init-param?
 
 Patches always get considered.

excellent, see https://issues.apache.org/bugzilla/show_bug.cgi?id=49916

If I've understood the tomcat build this passes all the tests and also appears 
to cause no tck problems in the geronimo-tomcat integration.
 
 And would the tomcat community consider simplifying the runtime code to use 
 this init-param instead of a Constants.JSP_FILE request attribute?
 
 As usual, it would depend on the patch.

thanks!
david jencks

 
 Mark
 
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Re: Can jsp-file be a JspServlet init-param?

2010-09-11 Thread Mark Thomas
On 11/09/2010 07:20, David Jencks wrote:
 
 On Sep 8, 2010, at 11:48 PM, Mark Thomas wrote:
 
 On 09/09/2010 00:54, David Jencks wrote:
 I've recently rewritten the geronimo-jetty integration to work off the 
 servlet 3 *Registration classes.  This works great except for servlets 
 backed by jsp files, since there's no way to tell the servlet container 
 through the ServletRegistration interface that its actually something with 
 this extra jsp file name that needs to be added through some special 
 process into the request.

 That looks like an oversight in the 3.0 spec.
 
 I'm not sure why you think that.

Because jsp-file is the only element of a servlet's configuration you
can't set via the registration class. I can't see any good reason for
the omission, hence my thinking it was an oversight.

  A servlet extension mechanism such as a jsp engine can use the  servlet 3 
 API to add servlets directly.  I think it would make more sense to completely 
 remove any mention of jsp from web.xml and the servlet spec and run jsps off 
 a separate configuration file.

Nice idea but unlikely to happen based on past experience. The Servlet
(and JSP) EGs have bent over backwards to ensure backwards
compatibility. I can't recall any feature being removed and I doubt
something as significant as this would be removed from the Servlet spec.

 excellent, see https://issues.apache.org/bugzilla/show_bug.cgi?id=49916

I'm currently at 49884, working my way down the bug list prior to a
7.0.3 release so I'll look at this before then (unless one of the other
committers beats me to it).

 If I've understood the tomcat build this passes all the tests and also 
 appears to cause no tck problems in the geronimo-tomcat integration.

Sounds good.

Mark

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Re: Can jsp-file be a JspServlet init-param?

2010-09-09 Thread Mark Thomas
On 09/09/2010 00:54, David Jencks wrote:
 I've recently rewritten the geronimo-jetty integration to work off the 
 servlet 3 *Registration classes.  This works great except for servlets backed 
 by jsp files, since there's no way to tell the servlet container through the 
 ServletRegistration interface that its actually something with this extra jsp 
 file name that needs to be added through some special process into the 
 request.

That looks like an oversight in the 3.0 spec.

 However, its easy to subclass the JspServlet so it gets the jsp file value 
 from an init param, and of course its easy to set the init param from the 
 web.xml.  This appears to work fine.
 
 Is there some reason I've missed that this is a bad idea?

Well, it would be container specific rather than defined by the spec but
since the spec offers no way to define it, I don't see there is a choice.

 If not, would the jasper community consider a patch to modify the JspServlet 
 so it directly looks for such an init-param?

Patches always get considered.

 And would the tomcat community consider simplifying the runtime code to use 
 this init-param instead of a Constants.JSP_FILE request attribute?

As usual, it would depend on the patch.

Mark

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Can jsp-file be a JspServlet init-param?

2010-09-08 Thread David Jencks
I've recently rewritten the geronimo-jetty integration to work off the servlet 
3 *Registration classes.  This works great except for servlets backed by jsp 
files, since there's no way to tell the servlet container through the 
ServletRegistration interface that its actually something with this extra jsp 
file name that needs to be added through some special process into the request.

However, its easy to subclass the JspServlet so it gets the jsp file value from 
an init param, and of course its easy to set the init param from the web.xml.  
This appears to work fine.

Is there some reason I've missed that this is a bad idea?

If not, would the jasper community consider a patch to modify the JspServlet so 
it directly looks for such an init-param?  And would the tomcat community 
consider simplifying the runtime code to use this init-param instead of a 
Constants.JSP_FILE request attribute?

thanks
david jencks


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