Hi Simon, Jean-Sebastien and Ant,
Thanks. I see it working now :-). The leads that each of you gave is all
that is to it.
Ant, I will put in a patch with this update soon. Thanks for taking the
pains and trying it yourself.
- Venkat
On 9/8/06, ant elder <[EMAIL PROTECTED]> wrote:
After playing around with this I think what Simon and Jean-Sebastien have
already said is correct, its the ".new" that does it. Right now the
createInstance method is:
public RubyScriptInstance createScriptInstance() {
return new RubyScriptInstance(rubyEngine.evalScript(getScript()),
responseClasses);
}
Assuming you add a class attribute to the scdl and store that value in a
className field in RubyScript then I think the following should work:
public RubyScriptInstance createScriptInstance() {
IRubyObject rubyInstance = rubyEngine.evalScript(getScript());
if (className != null) {
rubyInstance = rubyEngine.evalScript (className + ".new");
}
return new RubyScriptInstance(rubyInstance , responseClasses);
}
...ant
On 9/8/06, Jean-Sebastien Delfino <[EMAIL PROTECTED]> wrote:
>
> Venkata Krishnan wrote:
> > Hi
> >
> > The current implementation of Ruby in Java works only for scripts that
> > have
> > global methods. I am interested getting this work for methods inside
> > classes.. But then I am not able to figure out a way of doing this.
> >
> > Can somebody help me with clues on the following... maybe even if the
> C++
> > guys are able to provide me some hints conceptually I can map it to
the
> > JRuby stuff. Here is what I do...
> >
> > 1) I load the script into the Ruby engine and get a RubyObject out of
it
> > 2) call the invoke method on the Ruby object to invoke the Ruby
> functions
> > - in this invoke method there is no way I am able to specify the
> > RubyClass whos method I should invoke. All that it takes is the
> > method name
> > as a string. I tried using <ruby classname>.<ruby methodname> for the
> > method argument but failed.
> >
> > So how do I specify the class?
> >
> > Thanks
> >
> > - Venkat
> >
> > On 9/8/06, Simon Laws < [EMAIL PROTECTED]> wrote:
> >>
> >> On 9/8/06, ant elder < [EMAIL PROTECTED]> wrote:
> >> >
> >> > Yes we should be able to do the same type of thing with Java. Is
> >> the PHP
> >> > SDO
> >> > API the same as the C++ API or is it simplified?
> >> >
> >> > I think for most if not all the Java based scripting languages we
can
> >> just
> >> > expose the Java SDO API to the scripting language (at one point we
> >> had a
> >> > JavaScript version of the Big Bank sample account module that did
> >> this),
> >> > but
> >> > there are probably ways to use the dynamic nature of the script
> >> languages
> >> > to
> >> > come up with a simplify SDO API.
> >> >
> >> > ...ant
> >> >
> >> > On 9/7/06, Simon Laws <[EMAIL PROTECTED]> wrote:
> >> > >
> >> > > > In PHP we have an implementation of SDO that is fully based on
> the
> >> C++
> >> > > SDO
> >> > > > implementation. I'm not sure if it will be instructive in the
> java
> >> > space
> >> > > but
> >> > > > we have pretty much just wrapped the C++ SDO interfaces and
> >> exposed
> >> > them
> >> > > as
> >> > > > native PHP objects. I guess you would have to do a similar
> >> thing in
> >> > Ruby
> >> > > or
> >> > > > any other extension for that matter. The solution will depend
> >> on how
> >> > you
> >> > > > construct extensions to your scripting language. In PHP it just
> so
> >> > > happens
> >> > > > you have to do it in C/C++ but I would hope you can do it in
Java
> >> for
> >> > > JVM
> >> > > > based environments.
> >> > > >
> >> > >
> >> > >
> >> > > S
> >> > >
> >> > >
> >> >
> >> > The SDO API in PHP is fairly similar to the C++ SDO but is
simplified
> >> and
> >> in particular it tries to take avantage of the features of PHP so
> >> that it
> >> is
> >> comfortable to use for the PHP programmer. For example, a typical
> >> user of
> >> the XML DAS might do
> >>
> >> $xmldas->addTypes("company.xsd ");
> >> $document = $xmldas->loadFile("company.xml");
> >> $company = $document->getRootDataObject();
> >> $company_name = $company->name; // property access style
> >> $company_name = $company['name']; // associative array access style
> >> $company_name = $company[0]; // index array access style
> >>
> >> The trick is make the experience as natural for the script developer
> >> as possible so we have, for example, provided all the normal PHP
> >> object access styles.
> >>
> >> Also our user space implementation of the relational DAS is quite
> >> different from the current java implementation.
> >>
> >> Regards
> >>
> >> Simon
> >>
> >>
> >
> Venkat,
>
> I'm not sure how you do with thiw JRuby, but you should call the target
> method on an instance of the Ruby component implementation class, not on
> the class itself. So do something like:
> 1. invoke "Calculator.new" and get an object representing your Ruby
object
> 2. get an object representing the "add" method
> 3. invoke that method on the Ruby instance
>
> --
> Jean-Sebastien
>
>
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