[rules-users] DSL how to define recursive expression

[Wolfgang Laun]

Converting a left-to-right DSL phrase into a right-to-left Java-style
method call isn't something a regular expression can do, not for the
general (i.e., unlimited) case.

You'll probably require this for a limited number of steps, though.

Untested proposal:
Precede the single step phrase in your DSLR with this double-step:

[keyword][]{attr2:[A-Za-z0-9]+} property of
           {attr1:[A-Za-z0-9]+} property of {obj:[A-Za-z0-9]+}=
    {obj}.get{attr1!ucfirst}().get{attr2!ucfirst}()

and precede it with a three-step phrase, and so on.

And I don't think you need the \s+.

-W

On 15/10/2012, prashantmirajkar at gmail.com <prashantmirajkar at gmail.com> wrote:
> A simple statement like
>
> id of organization
>
> with DSL rule
>
> [keyword][]{attr:[A-Za-z0-9]+}\s+property\s+of\s+{obj:[A-Za-z0-9]+}={obj}.get{attr!ucfirst}()
>
> works just fine with result organization.getId().
>
> If I want to use statements like
>
> id property of organization property of department
>
> which should result in to department.getOrganization().getId().
>
> OR
>
> id property of organization property of department property of employee
>
> which should result in to
> employee.getDepartment().getOrganization().getId().
>
> How do I achieve this?
>
> cheers,
>
> Prashant
>
>
>
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