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Groups > comp.lang.java.programmer > #27390

Re: building "path expressions"

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On 01/23/2014 03:27 PM, Jeff Higgins wrote:
> On 01/23/2014 11:37 AM, Stefan Ram wrote:
>>    When creating an interface for a library, sometimes one wants the user
>>    to see nesting in a »path expression«, like for example
>> »a.b.c.d.e.f.g.h«
>>    to convey the idea that h is a part of g, which is a part of f, and
>> so on.
>
> Do you have an example using some real world names to help me understand?
> Can the names help the user to visualize the nesting, or is some other
> markup required?
> I'm drawing a complete blank here.
>
>>    I think it is funny that one can use either package names /or/ nested
>>    classes /or/ fields to implement such a path, without this choice
>> being
>>    visible in the »path expression«. For example, one posssibility to
>>    implement a »path expression« »a.b.c.d.e.f.g.h« might be:
>>
>> package a.b.c;
>> class G { int h = 8; }
>> class F { G g = new G(); }
>> class d { static class e { static F f = new F(); }}
>> public final class Main
>> { public static void main( String[] args )
>>    { java.lang.System.out.println( a.b.c.d.e.f.g.h );  }}
>>
>
java.lang.System.out.println(
   test.ram.Automobile.Commands
     .StartCockpitVoiceRecorder.GetOBD.Devices.GetSecondaryAirBag.Fire)

!!!! @#$%^&* @#%$%^&***

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Re: building "path expressions" Jeff Higgins <jeff@invalid.invalid> - 2014-01-23 15:27 -0500
  Re: building "path expressions" Jeff Higgins <jeff@invalid.invalid> - 2014-01-23 16:11 -0500
  Re: building "path expressions" Jeff Higgins <jeff@invalid.invalid> - 2014-01-23 16:52 -0500
    Re: building "path expressions" Jeff Higgins <jeff@invalid.invalid> - 2014-01-23 17:29 -0500
      Re: building "path expressions" markspace <markspace@nospam.nospam> - 2014-01-23 15:33 -0800

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