Re: Escaping in VTL (was Re: Velocity JSP Generation)
Will Glass-Husain [EMAIL PROTECTED] wrote:
Doesn't quite work that easily.
The problem is that if #directive is not an actual macro, than
\#directive
is shown verbatim. You only should escape when the same code is legit in
both the source and the generated Velocity. This can be a little
confusing.
Now, see, that's exactly the kind of garbage I avoid. I see now I left off
another rule that I follow.
- Always perform escaping with variable replace (preferrably EscapeTool).
Ie, ${esc.hash} or ${poundSign} and not \#
-Mike
- Original Message -
From: Mike Kienenberger [EMAIL PROTECTED]
To: Shinobu Kawai [EMAIL PROTECTED]; Velocity Users List
velocity-user@jakarta.apache.org
Cc: Velocity Users List velocity-user@jakarta.apache.org
Sent: Thursday, February 24, 2005 7:07 PM
Subject: Re: Escaping in VTL (was Re: Velocity JSP Generation)
Shinobu Kawai [EMAIL PROTECTED] wrote:
Escaping the VTL properly was a little challenging, but otherwise it
was
no
big deal.
I still don't get the whole escaping scheme, partly because I can't
find any documentation that is completely correct. We might want a
document totally devoted to escaping in VTL. :(
Escape all [$], [#], [], [!] and [']. (actually, ! might be overkill,
but
better safe than sorry.) Just use your tool :)
Always use formal notation ${x}
That's always worked for me, and never surprises me.
-Mike
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RE: Escaping in VTL (was Re: Velocity JSP Generation)
Doesn't quite work that easily. The problem is that if #directive is not an actual macro, than \#directive is shown verbatim. You only should escape when the same code is legit in both the source and the generated Velocity. This can be a little confusing. I know there is no agreement on this. To me, this behavior breaks the principle of least astonishment. http://en.wikipedia.org/wiki/Principle_of_least_astonishment Regards, -- Gonzalo Diethelm [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Escaping in VTL (was Re: Velocity JSP Generation)
Yes. It's confusing. But I'd vote against changing this (for the 1.x series) or all my app-generating templates will break. WILL - Original Message - From: Gonzalo Diethelm [EMAIL PROTECTED] To: 'Velocity Users List' velocity-user@jakarta.apache.org Sent: Friday, February 25, 2005 7:09 AM Subject: RE: Escaping in VTL (was Re: Velocity JSP Generation) Doesn't quite work that easily. The problem is that if #directive is not an actual macro, than \#directive is shown verbatim. You only should escape when the same code is legit in both the source and the generated Velocity. This can be a little confusing. I know there is no agreement on this. To me, this behavior breaks the principle of least astonishment. http://en.wikipedia.org/wiki/Principle_of_least_astonishment Regards, -- Gonzalo Diethelm [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Escaping in VTL (was Re: Velocity JSP Generation)
agreed. this is not my preferred escaping system either, but we can't just go changing it now. i can't think of any way to make such a change backwards compatible. the best that could be done (if someone is interested in doing it) in 1.x, would be to make escaping behavior configurable via a simple property toggle, but even then, the current behavior would have to stay the default option. On Fri, 25 Feb 2005 11:17:36 -0800, Will Glass-Husain [EMAIL PROTECTED] wrote: Yes. It's confusing. But I'd vote against changing this (for the 1.x series) or all my app-generating templates will break. WILL - Original Message - From: Gonzalo Diethelm [EMAIL PROTECTED] To: 'Velocity Users List' velocity-user@jakarta.apache.org Sent: Friday, February 25, 2005 7:09 AM Subject: RE: Escaping in VTL (was Re: Velocity JSP Generation) Doesn't quite work that easily. The problem is that if #directive is not an actual macro, than \#directive is shown verbatim. You only should escape when the same code is legit in both the source and the generated Velocity. This can be a little confusing. I know there is no agreement on this. To me, this behavior breaks the principle of least astonishment. http://en.wikipedia.org/wiki/Principle_of_least_astonishment Regards, -- Gonzalo Diethelm [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Velocity JSP Generation
I totally agree with Florin Vancea about it. Taming struts with torque/hibernate can be marvelous. Struts++ ;) Asif - Original Message - From: Florin Vancea [EMAIL PROTECTED] To: Velocity Users List velocity-user@jakarta.apache.org; Shinobu Kawai [EMAIL PROTECTED] Sent: Thursday, February 24, 2005 12:23 PM Subject: Re: Velocity JSP Generation - Original Message - From: Shinobu Kawai [EMAIL PROTECTED] To: Velocity Users List velocity-user@jakarta.apache.org Sent: Thursday, February 24, 2005 8:41 AM Subject: Re: Velocity JSP Generation snip I wonder if anybody uses Velocity to create Velocity templates. I might need to add vtl to the EscapeTool. (half joking, half...) snip Well, I was kind of thinking about this right before I saw your message. (only half seriously...) But really, what if (only what if) one would provide the Struts validator and config files (which are info-rich-enough), along with the *.properties containing messages, and at the startup of the WAR (or even at build time) Velocity would generate a set of Velocity templates for all required pages (maybe even Action classes). Yes, it's not something one can whip up before coffee break, but it may be interesting as it would produce Instant Applications - just add CPU/database and enjoy a nice hot cup of Velocity Java :) Florin - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Escaping in VTL (was Re: Velocity JSP Generation)
Hi Will, #* First time I've ever heard of creating JSP with Velocity. :) I wonder if anybody uses Velocity to create Velocity templates. I might need to add vtl to the EscapeTool. (half joking, half...) *# Ha. I wrote an app that uses Velocity to generate Velocity templates. It's a quick start tool to generate a Velocity-based application for new users. Wow! Great work. :-) Escaping the VTL properly was a little challenging, but otherwise it was no big deal. I still don't get the whole escaping scheme, partly because I can't find any documentation that is completely correct. We might want a document totally devoted to escaping in VTL. :( Best regards, -- Shinobu -- Shinobu Kawai [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Velocity JSP Generation
Don't get too carried away :) It was just caused by lack of coffee early in the morning. :) Actually I do not see such a framework being very useful, at least not compared to the complexity involved. It seems like Will was way ahead and I truly believe that such a framework is viable only for: a - to build a startup point which will be refined later _by_hand_ (what I understand Will did) b - to automate part of app building, within some organization big enough to support continuous customizing of the generator. From my experience, any other usage scenario for a (completely) automated app-builder is very unlikely. But then again, maybe I'm wrong or short-sighted. Cheers, Florin - Original Message - From: Rana Asif Rubbani [EMAIL PROTECTED] To: Velocity Users List velocity-user@jakarta.apache.org; Shinobu Kawai [EMAIL PROTECTED] Sent: Thursday, February 24, 2005 10:12 AM Subject: Re: Velocity JSP Generation I totally agree with Florin Vancea about it. Taming struts with torque/hibernate can be marvelous. Struts++ ;) Asif - Original Message - From: Florin Vancea [EMAIL PROTECTED] To: Velocity Users List velocity-user@jakarta.apache.org; Shinobu Kawai [EMAIL PROTECTED] Sent: Thursday, February 24, 2005 12:23 PM Subject: Re: Velocity JSP Generation - Original Message - From: Shinobu Kawai [EMAIL PROTECTED] To: Velocity Users List velocity-user@jakarta.apache.org Sent: Thursday, February 24, 2005 8:41 AM Subject: Re: Velocity JSP Generation snip I wonder if anybody uses Velocity to create Velocity templates. I might need to add vtl to the EscapeTool. (half joking, half...) snip Well, I was kind of thinking about this right before I saw your message. (only half seriously...) But really, what if (only what if) one would provide the Struts validator and config files (which are info-rich-enough), along with the *.properties containing messages, and at the startup of the WAR (or even at build time) Velocity would generate a set of Velocity templates for all required pages (maybe even Action classes). Yes, it's not something one can whip up before coffee break, but it may be interesting as it would produce Instant Applications - just add CPU/database and enjoy a nice hot cup of Velocity Java :) Florin - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Velocity JSP Generation
Florin Vancea [EMAIL PROTECTED] wrote: But really, what if (only what if) one would provide the Struts validator and config files (which are info-rich-enough), along with the *.properties containing messages, and at the startup of the WAR (or even at build time) Velocity would generate a set of Velocity templates for all required pages (maybe even Action classes). I take a Cayenne database model, run it through Velocity and create a combination of nine struts-config files, validator xml files, java actions, and velocity templates for generating reports on database entities and creating/editing database entities. Cayenne takes the same database model, runs it through velocity and creates database layer objects. I just give my ant task a database table entity and out comes a report component and editing tool. The only thing I might do afterward is swap a few fields on the html.vm template to organize the form differently. That and update my main struts-config.xml file to include all of the new pieces. So it's certainly doable. -Mike - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Escaping in VTL (was Re: Velocity JSP Generation)
Shinobu Kawai [EMAIL PROTECTED] wrote:
Escaping the VTL properly was a little challenging, but otherwise it was
no
big deal.
I still don't get the whole escaping scheme, partly because I can't
find any documentation that is completely correct. We might want a
document totally devoted to escaping in VTL. :(
Escape all [$], [#], [], [!] and [']. (actually, ! might be overkill, but
better safe than sorry.) Just use your tool :)
Always use formal notation ${x}
That's always worked for me, and never surprises me.
-Mike
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: Escaping in VTL (was Re: Velocity JSP Generation)
Hi Mike,
I still don't get the whole escaping scheme, partly because I can't
find any documentation that is completely correct. We might want a
document totally devoted to escaping in VTL. :(
Escape all [$], [#], [], [!] and [']. (actually, ! might be overkill, but
better safe than sorry.) Just use your tool :)
I'll add [\] to that. :)
Always use formal notation ${x}
That's always worked for me, and never surprises me.
If I can be sure that EscapeTool will be in the Context, it isn't hard
at all. But what if it's not?
Anyways, what I wanted to say was I want a complete and accurate
document on how escaping works in Velocity. It should cover
references, directives, silent notation, formal notation, schmoo...
Anything else?
Best regards,
-- Shinobu
--
Shinobu Kawai [EMAIL PROTECTED]
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Re: Escaping in VTL (was Re: Velocity JSP Generation)
Doesn't quite work that easily.
The problem is that if #directive is not an actual macro, than \#directive
is shown verbatim. You only should escape when the same code is legit in
both the source and the generated Velocity. This can be a little confusing.
Will
- Original Message -
From: Mike Kienenberger [EMAIL PROTECTED]
To: Shinobu Kawai [EMAIL PROTECTED]; Velocity Users List
velocity-user@jakarta.apache.org
Cc: Velocity Users List velocity-user@jakarta.apache.org
Sent: Thursday, February 24, 2005 7:07 PM
Subject: Re: Escaping in VTL (was Re: Velocity JSP Generation)
Shinobu Kawai [EMAIL PROTECTED] wrote:
Escaping the VTL properly was a little challenging, but otherwise it
was
no
big deal.
I still don't get the whole escaping scheme, partly because I can't
find any documentation that is completely correct. We might want a
document totally devoted to escaping in VTL. :(
Escape all [$], [#], [], [!] and [']. (actually, ! might be overkill,
but
better safe than sorry.) Just use your tool :)
Always use formal notation ${x}
That's always worked for me, and never surprises me.
-Mike
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: Velocity JSP Generation
Hi Rana, Is there any tool/framework available that you just give it the database schema and it creates the jsp pages for you. Like GUIs for add/edit/delete cases and a controller page where all pages will be submitted. Is there any such jsp code generator available. I'm not aware of such tools, but the torque project might give you a clue on how to do it. http://db.apache.org/torque/ #* First time I've ever heard of creating JSP with Velocity. :) I wonder if anybody uses Velocity to create Velocity templates. I might need to add vtl to the EscapeTool. (half joking, half...) *# Best regards, -- Shinobu -- Shinobu Kawai [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Velocity JSP Generation
Wow, it seems to me off the chart here by asking for jsp related stuff. Personally I think Velocity is the way to go, why need JSP? jian On Wed, 23 Feb 2005 22:41:21 -0800, Shinobu Kawai [EMAIL PROTECTED] wrote: Hi Rana, Is there any tool/framework available that you just give it the database schema and it creates the jsp pages for you. Like GUIs for add/edit/delete cases and a controller page where all pages will be submitted. Is there any such jsp code generator available. I'm not aware of such tools, but the torque project might give you a clue on how to do it. http://db.apache.org/torque/ #* First time I've ever heard of creating JSP with Velocity. :) I wonder if anybody uses Velocity to create Velocity templates. I might need to add vtl to the EscapeTool. (half joking, half...) *# Best regards, -- Shinobu -- Shinobu Kawai [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Velocity JSP Generation
#* First time I've ever heard of creating JSP with Velocity. :) I wonder if anybody uses Velocity to create Velocity templates. I might need to add vtl to the EscapeTool. (half joking, half...) *# Ha. I wrote an app that uses Velocity to generate Velocity templates. It's a quick start tool to generate a Velocity-based application for new users. Escaping the VTL properly was a little challenging, but otherwise it was no big deal. WILL - Original Message - From: Shinobu Kawai [EMAIL PROTECTED] To: Velocity Users List velocity-user@jakarta.apache.org Sent: Wednesday, February 23, 2005 10:41 PM Subject: Re: Velocity JSP Generation Hi Rana, Is there any tool/framework available that you just give it the database schema and it creates the jsp pages for you. Like GUIs for add/edit/delete cases and a controller page where all pages will be submitted. Is there any such jsp code generator available. I'm not aware of such tools, but the torque project might give you a clue on how to do it. http://db.apache.org/torque/ #* First time I've ever heard of creating JSP with Velocity. :) I wonder if anybody uses Velocity to create Velocity templates. I might need to add vtl to the EscapeTool. (half joking, half...) *# Best regards, -- Shinobu -- Shinobu Kawai [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Velocity JSP Generation
- Original Message - From: Shinobu Kawai [EMAIL PROTECTED] To: Velocity Users List velocity-user@jakarta.apache.org Sent: Thursday, February 24, 2005 8:41 AM Subject: Re: Velocity JSP Generation snip I wonder if anybody uses Velocity to create Velocity templates. I might need to add vtl to the EscapeTool. (half joking, half...) snip Well, I was kind of thinking about this right before I saw your message. (only half seriously...) But really, what if (only what if) one would provide the Struts validator and config files (which are info-rich-enough), along with the *.properties containing messages, and at the startup of the WAR (or even at build time) Velocity would generate a set of Velocity templates for all required pages (maybe even Action classes). Yes, it's not something one can whip up before coffee break, but it may be interesting as it would produce Instant Applications - just add CPU/database and enjoy a nice hot cup of Velocity Java :) Florin - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Velocity JSP Generation PROPOSED PROJECT
HI Torque/Hibernate are persistence layers. You give them database schema in XML and get Data Objects and SQL scripts etc. Actually I am thinking to create a framework that you just give your db schema in XML form like you do for torque/hibernate and it will create the data objects using toque/hibernate, generating JSP source code, linking of torque/hibernate objects with appropriate JSP page. E.g. In database you have a table AUTHOR. Now you want to insert/update/delete authors. The framework will create a page to add authors[The code generator can customize the pages to any theme provided], one page for update of authors and one page for deletion of authors and the like. i.e. you can customize the page generation e.g. create only add page and update page, don't create delete page. The framework will take the input of fields for each database field. i.e. against this field you want a textfield or radio or combo etc. the framework will provide necessary scripting also. e.g. a database field of Number datatype can have a display text field that only accepts numbers[generated script will do it]. Now the framework will bind the created JSP/VM page with torque/hibernate Objects itself and also produce a ctrl page where add/update pages will be posted in order to perform the action. In short, using the existing projects like velocity, torque, jsp, hibernate etc, i just wanted to build a project which is capable of providing integrated model, view controller layers of such projects by just a button click . All of this is just a thought. I just wanted to confirm from velocity community that is there any the like open source thing already exists? Also will velocity serve the purpose as far as code generation is concerned. Please comment and suggest. I'm excited about this project. Regards Rana Asif Rubbani - Original Message - From: Shinobu Kawai [EMAIL PROTECTED] To: Velocity Users List velocity-user@jakarta.apache.org Sent: Thursday, February 24, 2005 11:41 AM Subject: Re: Velocity JSP Generation Hi Rana, Is there any tool/framework available that you just give it the database schema and it creates the jsp pages for you. Like GUIs for add/edit/delete cases and a controller page where all pages will be submitted. Is there any such jsp code generator available. I'm not aware of such tools, but the torque project might give you a clue on how to do it. http://db.apache.org/torque/ #* First time I've ever heard of creating JSP with Velocity. :) I wonder if anybody uses Velocity to create Velocity templates. I might need to add vtl to the EscapeTool. (half joking, half...) *# Best regards, -- Shinobu -- Shinobu Kawai [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
