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ectoplasm
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 Posted: Thu Oct 27, 2005 4:21 am Post subject: Classes & data members |
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I'd like to ask for advice on the following.
I have a data structure of network elements ('NetworkElement' base
class & derived classes like Server, Area, Cell, etc.)
The network elements are organised under a network topology
('NetworkTopology' class).
The problem is that the properties (data members) of network elements
depend on things such as: 1) technology of the network topology, 2)
vendor of the network element, 3) other factors.
Is there a way to, in some way, have classes with kind of 'dynamic'
data members which can be added / removed (in groups)?
Bye,
E.
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John Harrison
Guest
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| Posted: Thu Oct 27, 2005 7:16 am Post subject: Re: Classes & data members |
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ectoplasm wrote:
| Quote: | I'd like to ask for advice on the following.
I have a data structure of network elements ('NetworkElement' base
class & derived classes like Server, Area, Cell, etc.)
The network elements are organised under a network topology
('NetworkTopology' class).
The problem is that the properties (data members) of network elements
depend on things such as: 1) technology of the network topology, 2)
vendor of the network element, 3) other factors.
Is there a way to, in some way, have classes with kind of 'dynamic'
data members which can be added / removed (in groups)?
Bye,
E.
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No there isn't.
To help us solve your problem you need specify more information. For
instance do you need to add and remove these data members during the
lifetime of a single object.
Server s;
s.add_group(xyz);
s.remove_group(abc);
etc.
Or are you saying that each object has one particular set of data
members that will last for the lifetime of that object, but that each
object may have a different set of data members?
john
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mlimber
Guest
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| Posted: Thu Oct 27, 2005 1:21 pm Post subject: Re: Classes & data members |
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ectoplasm wrote:
| Quote: | I'd like to ask for advice on the following.
I have a data structure of network elements ('NetworkElement' base
class & derived classes like Server, Area, Cell, etc.)
The network elements are organised under a network topology
('NetworkTopology' class).
The problem is that the properties (data members) of network elements
depend on things such as: 1) technology of the network topology, 2)
vendor of the network element, 3) other factors.
Is there a way to, in some way, have classes with kind of 'dynamic'
data members which can be added / removed (in groups)?
Bye,
E.
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You might be interested in "virtual data" that can be simulated in C++.
See the FAQ:
http://www.parashift.com/c++-faq-lite/value-vs-ref-semantics.html#faq-31.2
Cheers! --M
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Jim Langston
Guest
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| Posted: Sun Oct 30, 2005 4:16 am Post subject: Re: Classes & data members |
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"ectoplasm" <e_c_t_o (AT) hotmail (DOT) com> wrote
| Quote: | I'd like to ask for advice on the following.
I have a data structure of network elements ('NetworkElement' base
class & derived classes like Server, Area, Cell, etc.)
The network elements are organised under a network topology
('NetworkTopology' class).
The problem is that the properties (data members) of network elements
depend on things such as: 1) technology of the network topology, 2)
vendor of the network element, 3) other factors.
Is there a way to, in some way, have classes with kind of 'dynamic'
data members which can be added / removed (in groups)?
Bye,
E.
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Why not simply make the network elements polymorphic data contained in the
NetworkTopology perhaps in a vector?
std::vector<NetworkElement*> NetElements;
then you can push whatever types you want into it depending on the type of
network (perhaps in the constructor via pass in parm stating the network
type).
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