Re: XDocReport, IDE support (Was: Re: Anybody with deeper OSGi bundle can comment on freemarker.jar OSGification?)

2013/6/3 Daniel Dekany <[email protected]>

> Monday, June 3, 2013, 2:29:45 PM, Angelo zerr wrote:
>
> [snip]
> >> For example, what happens if the users enters `x && y`? Won't Word/OO
> >> corrupt that to `x &amp;&amp; y`?
> >
> > Yes you are right. To fix this problem, XDocReport preprocess each
> > XML entries to transform  `x &amp;&amp; y` to `x && y`
> > before loading it in the Freemarker Template.
>
> You mean it already does that. (I suppose it's smart enough to do it
> only inside the FreeMarker directives and interpolations or else it
> would corrupt the XML.)
>

Interpolation, Directive etc must be inserted in a docx mergefield  /odt
input field. The preprocessing is done
just for mergefield/input field.


> [snip]
> > It must create a field to enter an interpolation or directive. Why?
> > Because docx and odt doesn't escape the typed content that you set in a
> field.
>
> You said you un-escape the FTL parts, so what do you mean by
> "escaped"? From use perspective it's maybe needless complication,
> creating a field, and then also delimit its content with ${...}. I
> don't want to be difficult here, just trying to figure out what would
> be needed for this on FreeMarker's side, if anything...
>
Ok sorry I'm not clear.

When you type some content in a docx, MS word split your content in several
xml elements.
For instance if you type :

---------------------------------------------------
${name}
---------------------------------------------------

The word/document.xml looks like this :

---------------------------------------------------
<t>${</t>name}</t>
---------------------------------------------------

Freemarker can do nothing with that. A solution could be done with a
preprocessing to transform like this :

---------------------------------------------------
<t>${name}</t>
---------------------------------------------------

I have done that with pptx but it's very bugged. The elegant solution is to
use mergefield/input filed, because the xml is like this :

---------------------------------------------------
<t><field>${name}</field></t>
---------------------------------------------------

The preprocessing removes just the field element to have:

---------------------------------------------------
<t>${name}</t>
---------------------------------------------------


> > If you are interested, you can play with our online demo
> > http://xdocreport.opensagres.cloudbees.net/index.jsp
>
> [snip]
>
> >> Of course, starting from 2.3.20, the Maven artifact will be an OSGi
> >> bundle.
> >>
> > Great! We will switch to it.
>
> (I have almost renamed DollarVariable to DollarInterpolation, it being
> a non-public class. Then after I saw that code earlier, I have
> realized it would break XDocReport... and who knows what else.)
>

As XDocReport  is modular, we can create an other project for that. So no
problem if you break the API.

>
> >> He has also gave up on FreeCC as far as I know. But I suppose it can
> >> be implemented with JavaCC too.
> >
> > Perhaps, but the question is who can do that?
>
> There's a high chance that *if* anyone will do that, that will be me.
> Although I have to say that I don't know yet how difficult that will
> be...
>
Ok

>
> >> An other idea that I had had, is to manage Freemarker with
> >> CodeMirro( Javascript editor which manages any mode). I have works a
> >> lot with CodeMirror for completion and syntax error.
>
> Of course, anything that (properly) supports FreeMarker is a good
> thing as far as I'm concerned...
>

Ok. And if we do that, you could host an online demo in order to future
users can play with FM syntax with online demo.
You could have a JSON editor + FM editor. As soon as you modify it, you
could see the FM preview.
On other words, do the same thing than our demo (generate reports + convert
it to pdf as soon as you change the HTML model)  :
http://xdocreport.opensagres.cloudbees.net/processReport?reportId=DocxTextStylingWithFreemarker.docx&dispatch=load&converter=PDF_XWPF


> >> For instance you can find sample with Velocity
> >> http://codemirror-java.opensagres.cloudbees.net/velocity.html the
> >> syntax error is managed on server side. We could do the same thing
>
> >> BTW, does Velocity have an error-tolerant AST builder?
> >
> > I think it's the same problem than Freemarker. You can see it in my
> > demo http://codemirror-java.opensagres.cloudbees.net/velocity.html
> > The editor displays just one error even (the first found error) even if
> they are several errors.
>
> I think that's alone isn't a that big issue. The user can fix the
> errors as they pop up, until there's none, and that's it. So is this
> really a blocking issue for the DLTK-based plugin?
>
Its a long time that I have developped  Freemarker-DLTK, but if I remember
DLTK needs to maintain
a DLTK AST even if the editor breaks the FM AST. (As soon as you type text
in the editor, I called
the FM AST to create a DLTK AST). The DLTK AST is used for instance for the
Outline View to display elements of FM (#list, etc)

Today I'm very busy, but if some people are interested with DLTK
Freemarker, I could try to restart it (uses the last version of DLTK, etc).

Regards Angelo

>
> --
> Thanks,
>  Daniel Dekany
>
>

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