Hi John,

Thanks for reply, if it's only in 2.0, then I think I will use the
process definition I wrote for a while, until 2.0 is stable and I get
chance to embed it in java.

On Jul 13, 6:16 pm, John Mettraux <[email protected]> wrote:
> On Mon, Jul 13, 2009 at 6:47 PM, Li Xiao<[email protected]> wrote:
>
> > I did lots of research, but still can't get how to simply define a
> > process with back/jump to participant easy.
>
> > In my case, every participant could decide back to any participant
> > completed before, which may looks like this:
>
> >  OpenWFE.process_definition :name => 'pdname' do
> >    cursor do
> >      participant 'a'
> >      participant 'b'
> >      jump :step => 0, :if => "${f:back_to_a}"
> >      _if :test => "${f:xxx}" do
> >         participant 'c'
> >         jump :step => 0, :if => "${f:back_to_a}"
> >         jump :step => 1, :if => "${f:back_to_b}"
> >      end
> >      participant 'd'
>
> Hi Li Xiao,
>
> the feature you're requesting has been implemented, but in ruote2.0 :
>
>  http://github.com/jmettraux/ruote/blob/709f0dc881a75e47ac7eabd1deeed0...
>
> If you really need it, I can backport it to the 0.9.x line.
>
> With ruote 0.9.x, what about something like :
>
> ---8<---
> OpenWFE.process_definition :name => 'test' do
>   sequence do
>
>     set :field => 'next_participant', :value => 'a'
>
>     repeat :break_if => '${f:next_participant} not set' do
>       participant '${f:next_participant}'
>     end
>   end
> end
> --->8---
>
> where the loop (repeat) breaks when the field next_participant has no value 
> set.
>
> You can maybe model your process by nesting cursors and using "rewind" :
>
> ---8<---
> OpenWFE.process_definition :name => 'test' do
>   cursor do
>     cursor :rewind_if => '${f:result} == wrong' do
>       a
>     end
>     b
>     rewind :if => '${f:result} == wrong'
>     cursor do
>       c
>       rewind :if => '${f:result == wrong}'
>       d
>     end
>   end
> end
> --->8---
>
> Hope this will help, best regards !
>
> --
> John Mettraux   -  http://jmettraux.wordpress.com
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