Help: Ada and Object-Oriented Methodologies

Help: Ada and Object-Oriented Methodologies

[Francisco San Martin Roman]

	I need to know how can I use object-oriented concepts 
(modularity, hierarchy, abstraction, encapsulation) in Ada
programming? I've never used Ada and I'll really appreciate
your help and examples for each concept implemmentation.

	Francisco  San Martin  Roman.
	frsanmar@campus.mor.itesm.mx

Help Ada and Object-Oriented Methodologies

[Francisco San Martin Roman]

	Could somebody help me ? I need to know if object-oriented concepts like
encapsulation, abstraction, inheritance, modularization can be implemmented in Ada 
programming. As you can see, I've never used Ada programming languaje and I need
a little example for each (if any).

	Francisco  San Martin  Roman.
	frsanmar@campus.mor.itesm.mx

Help: Ada and object-oriented methodologies

[Francisco San Martin Roman]

	Could somebody tell me if object-oriented concepts (abstraction, encapsulation, 
modularization, inheritance) can be implemmented in Ada programming? I'd like to
receive a little example of each (if any). As you can see, I've never used Ada.

	Francisco  San Martin  Roman.
	frsanmar@campus.mor.itesm.mx

Re: Help: Ada and Object-Oriented Methodologies

[Bob Kitzberger]

[tried email, but it bounced...]

There are two versions of the Ada standard: Ada 83, which supports
object-based programming; and Ada 95 which supports object-oriented
programming directly.

For a discussion of Ada83 object-based programming, see Booch's book
(the first edition) of "Object Oriented Design with
Applications". Basically, you define a class as a private type, and
encapsulate it and all of its functions in a package, e.g.:

	-- Ada 83 object-based example
	with Color;		-- other classes referenced
	with Manufacturer;	--  "
	package Automobile is

	  type Object is private;

	  function Create( The_Color : Color.Object;
			   The_Manufacturer : Manufacturer.Object )
			   return Object;

	  procedure Destroy ( The_Auto : in out Object );

	  function The_Color( Of_Auto : in Object ) return Color.Object;
	  function The_Manufacturer( Of_Auto : in Object ) return
		Manufacturer.Object;

	  ...etc other selectors/accessors/etc...
	private
	  type Object is ...
	end Automobile;

Using this "class":

	My_Car : Automobile.Object :=
		Automobile.Create( Color.Hunter_Green,
				   Manufacturer.Jeep );
	...
	C : Color.Object := Automobile.The_Color( My_Car );


For Ada95 clases, inheritance, etc.  see the Ada 95 reference manual
(poke around in the <A HREF="http://lglwww.epfl.ch/Ada/"> Home of the
Brave Ada Programmers </A>


--
Bob Kitzberger	        +1 (916) 274-3075	        rlk@rational.com
Rational Software Corp., 10565 Brunswick Rd. #11, Grass Valley, CA 95945
  "...the solution to the problem is usually to pee on it"  -- Dave Barry

Re: Help: Ada and object-oriented methodologies

[WLawton]

I recommend the book "Object-Oriented Modeling and Design", by Rumbaugh,
et.al.  The book contains several examples of sample OO concepts
implemented in several different languages, including Ada83.

Hope this helps...
Wayne R. Lawton            I said it, I believe it to be true,
Various Affiliations           No excuses, No caveats.

Re: Help: Ada and object-oriented methodologies

[David Weller]

In article <FRSANMAR.95Feb27135825@p76.mor.itesm.mx>,
Francisco San Martin Roman <frsanmar@mor.itesm.mx> wrote:
>
>	Could somebody tell me if object-oriented concepts (abstraction, encapsulation, 
>modularization, inheritance) can be implemmented in Ada programming? I'd like to
>receive a little example of each (if any). As you can see, I've never used Ada.
>

A good starter book would be "Ada From The Beginning, 2nd ed" by Jan
Skansholm.  I don't have the ISBN handy, as my 14 year-old son has
swiped it and is reading it.  I like to indoctrinate them young :-)

-- 
      Frustrated with C, C++, Pascal, Fortran?  Ada95 _might_ be for you!
	  For all sorts of interesting Ada95 tidbits, run the command:
"finger dweller@starbase.neosoft.com | more" (or e-mail with "finger" as subj.)