Re: Constructors/Destructors in Ada95

[rwilson007007@my-deja.com]

in order to achieve the same effect as constructor arguments in c++ it
is helpful to define an attributes class for each application-object
class (with the same inheritance pattern as the application classes).
the attributes class tagged record contains a field for each application
-class tagged record field requiring explicit initialization.

then, define the base class tagged record for your
application-object classes with a classwide access value to a
constant attributes class instance as one of its members.

finally, the base class constructor reads the initial-attributes values
for its attributes member from config files (for example). the
inheriting classes then look-up the appropriate initial values in
This.Attributes (for "Initialize (This : in out access Object)")....

another way is to is enclose your classes in generic packages with the
generic formal parameters corresponding to constructor arguments.
however, this would seem to force a singleton pattern.

--rwilson


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