Re: Using Jivan in a Barracuda App - Solved!

Hi David,

great job tracking this down!

-Arno

David R Robison wrote:
> I've isolated the problem. The problem is that when Jivan parses a file where
> there is blank space between the <table> and <tr> tags, it inserts a Text node
> containing the spaces. Then when HTMLComponentRenderer renders the DOM, it
> checks to ensure that only <TR> elements are children of a <TABLE> element. If
> not, then it creates a new <TR> element to enclose the unexpected element. I've
> modified HTMLComponentRenderer to ignore child nodes if they are empty Text
> nodes. I've included the source with this message.
> 
> David Robison
> 
> Quoting Christian Cryder <[email protected]>:
> 
> 
>>Just a comment...
>>
>>Theoretically, Barracuda should work just fine - it doesn't do anything
>>that
>>is XMLC specific (or at least, its not supposed to ;-)...all the
>>interaction
>>with the DOM occurs through the DOM interfaces, so it should be a
>>simple
>>matter to plug in a DOM that was created from a different source.
>>
>>That said, I haven't actually tried Jivan yet, personally, so I can't
>>say
>>for sure what will happen. And unfortunately, I have zero free cycles
>>right
>>now (seems to be the story of my life lately)
>>
>>I have a couple of suggestions.
>>
>>First, I'd try loading the same page entirely with XMLC/BTemplate, and
>>make
>>sure it works there. In other words, get a functional starting point
>>with
>>BTemplate. Typically, when you use BTemplate you won't directly render
>>it
>>yourself - you'll just extend BTemplateViewHandler and let it do the
>>work.
>>
>>Second, once you get that working, then try substituting in a Jivan
>>loaded
>>DOM (without changing anything else). That will tell us for sure if
>>the
>>problem is in BTemplate (or Jivan), rather than in the way you are
>>trying to
>>use it.
>>
>>Third, you may have to dive into BTemplateHandler and the specific
>>component
>>renderers to see exactly what is going on. This may be a bit
>>intimidating,
>>but I think we could help coach you through it if you're willing to get
>>in
>>and do some of the debugging work. My one suggestion if you get to
>>this
>>point is to make you template as simple as you possibly can before
>>trying to
>>debug through BTemplateHandler - that will help keep you from getting
>>more
>>confused than you need be.
>>
>>Let us know how it goes!
>>
>>Christian
>>
>>----------------------------------------------
>>Christian Cryder
>>Internet Architect, ATMReports.com
>>Project Chair, BarracudaMVC - http://barracudamvc.org
>>----------------------------------------------
>>"Coffee? I could quit anytime, just not today"
>>
>>
>>
>>>-----Original Message-----
>>>From: [email protected]
>>>[mailto:[email protected]]On Behalf Of David R
>>
>>Robison
>>
>>>Sent: Wednesday, November 26, 2003 8:23 AM
>>>To: [email protected]
>>>Subject: Re: [Barracuda] Using Jivan in a Barracuda App
>>>
>>>
>>>Thanks for the help...
>>>
>>>The problem definitely is caused when I call templateComp.render(new
>>>DefaultViewContext(context). I was hoping to use Jivan along with
>>>Barracuda's
>>>Template Models. Any idea how I could get them both to work
>>>together in harmony?
>>>
>>>David Robison
>>>
>>>Quoting Arno Schatz <[email protected]>:
>>>
>>>
>>>>David,
>>>>
>>>>Parsing the html you posted has been done with Jivan before, and I
>>>>checked
>>>>it again, the parser parses it correctly. I tried to replicate the
>>
>>DOM
>>
>>>>manipulations which happens is BTemplate and couldn't see any
>>>>problems.
>>>>
>>>>I haven't used BTemplate actually, so I don't know exactly what's
>>
>>going
>>
>>>>on
>>>>in there. But you can print out the DOM before and after BTemplate 
>>
>>is
>>
>>>>being
>>>>called. Can you call org.jivan.html.test.DOMTest.print( doc, "")
>>
>>before
>>
>>>>and
>>>>after BTemplate?
>>>>
>>>>Sorry I can give you a better answer, I haven't used Barracuda
>>
>>myself,
>>
>>>>yet.
>>>>
>>>>-Arno
>>>>
>>>>
>>>>
>>>>>That was a typo on the message... David
>>>>>
>>>>>Christian Cryder wrote:
>>>>>
>>>>>
>>>>>>><table><tr><td>
>>>>>>>BBB
>>>>>>></tr></td></table>
>>>>>>>
>>>>>>>
>>>>>>Not sure if that was a typo or not, but I see an obvious
>>>>
>>>>problem...your
>>>>
>>>>>></tr></td> are in the wrong order. They should be reversed.
>>>>>>
>>>>>>Christian
>>>>>>----------------------------------------------
>>>>>>Christian Cryder
>>>>>>Internet Architect, ATMReports.com
>>>>>>Project Chair, BarracudaMVC - http://barracudamvc.org
>>>>>>----------------------------------------------
>>>>>>"Coffee? I could quit anytime, just not today"
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>>-----Original Message-----
>>>>>>>From: [email protected]
>>>>>>>[mailto:[email protected]]On Behalf Of David R
>>>>
>>>>Robison
>>>>
>>>>>>>Sent: Tuesday, November 25, 2003 7:42 AM
>>>>>>>To: [email protected]
>>>>>>>Subject: Re: [Barracuda] Using Jivan in a Barracuda App
>>>>>>>
>>>>>>>
>>>>>>>The JivanDOMWriter did NOT fix the problem. I now believe that
>>>>>>>the problem might
>>>>>>>lie somewhere in the Jivan parser. It appears to be very
>>>>>>>sensitive to how the
>>>>>>>text file is layed out. For example, the following code
>>
>>renders
>>
>>>>>correctly:
>>>>>
>>>>>>><table><tr><td>
>>>>>>>BBB
>>>>>>></tr></td></table>
>>>>>>>
>>>>>>>however, if there is line breaks and space between the
>>
>>elements
>>
>>>>such
>>>>
>>>>>as...
>>>>>
>>>>>>><table>
>>>>>>>  <tr>
>>>>>>>     <td>
>>>>>>>      BB
>>>>>>>     </td>
>>>>>>>  </tr>
>>>>>>></table>
>>>>>>>
>>>>>>>then it likes to insert empty <tr></tr> and <td></td> blocks.
>>>>>>>
>>>>>>>David Robison
>>>>>>>
>>>>>>>
>>>>
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