Re: Child objects inheriting property values

have you used rotor or refelctor on the "DataTable" classes...

I'm pretty sure that a DataColumn/DataTable support the concept of a
"Default Value" for a column, that is then "picked up" when a new DataRow is
added to the datatable.


-----Original Message-----
From: Discussion of development on the .NET platform using any managed
language [mailto:[email protected]]On Behalf Of Brady Kelly
Sent: Tuesday, November 20, 2007 10:06 AM
To: [email protected]
Subject: Re: [DOTNET-CLR] Child objects inheriting property values


So I initially only store a parent reference and a null local value, and if
the local value is set, I use that, and if not I use the parent reference to
access the 'default' value.  Seems doable.

> -----Original Message-----
> From: Discussion of development on the .NET platform using any managed
> language [mailto:[email protected]] On Behalf Of Richard
> Blewett
> Sent: 20 November 2007 04:06 PM
> To: [email protected]
> Subject: Re: [DOTNET-CLR] Child objects inheriting property values
>
> I guess you really want 2) here as you stated you wanted the column to
> have
> the same value as the record unless it was set specifically which means
> it
> should reflect the record value even if the record has been changed.
>
> Regards
>
> Richard Blewett - DevelopMentor
>
> > -----Original Message-----
> > From: Discussion of development on the .NET platform using any
> managed
> > language [mailto:[email protected]] On Behalf Of Mike
> > Andrews
> > Sent: 20 November 2007 13:51
> > To: [email protected]
> > Subject: Re: [DOTNET-CLR] Child objects inheriting property values
> >
> > I've done either one of two things in that instance:
> >
> > 1)  Have the value set as a constructor parameter on the Column
> object.
> > 2)  Have the Record object passed as a constructor parameter and a
> > reference
> > stored.
> >
> > It just depends on the design goal and what you want to achieve.
> >
> > On Nov 20, 2007 4:09 AM, Brady Kelly <[email protected]>
> wrote:
> >
> > > I have a hierarchy of objects that share some attributes, e.g. both
> > my
> > > parent Record and Column objects have a columnDelimiter property.
> I
> > want
> > > this property on the Column object to default to the same property
> on
> > the
> > > Record object, until specified on the Column object.  What is the
> > best way
> > > to go about this?  I could give each Column a reference to the
> Record
> > it
> > > belongs to, but this seems not quite right to me.  My other option
> is
> > to
> > > have the Record act as a ColumnFactory, setting the columnDelimiter
> > value
> > > on
> > > each Column it creates, until a set accessor on Column optionally
> > > overrides
> > > that default value.
> > >
> > >
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