How do I use the setMethod function in V4RB

[Kevin Windham]

On Sep 23, 2004, at 11:21 PM, Ruslan Zasukhin wrote:

> Please look on page 26 of V4RBReference.pdf
>
> When you create field you need send text of method as ONE MORE 
> parameter.
>
> Must be
>
>     CreateField( 
> fFieldName.text,pFieldType.RowTag(pFieldType.ListIndex),
>                 0, 0, fMethodText.Text )
>

On page 35 of V4RB reference it says:

mFullName = new VVarChar( “FullName”, 504 )
mFullName.SetMethod( “CONCAT(FirstName, ‘ ‘, LastName)”  )

Oh, I think I get it now. I am confusing the class style methods with 
the new stuff. I am using server and creating tables on the fly. So 
what are the restrictions on modifying a field after it's created. Can 
I change the method, or do I have to delete the field and create a new 
one? I am finding myself searching through the docs over and over to 
find what I can do after I have a database to modify it. What I want to 
do is build a system for dynamically generating tables to store class 
objects. I also want these objects to be able to automatically add new 
data fields if they are changed and there isn't a field available to 
store a particular property. It is getting tedious trying to sort all 
this out.

I've noticed that there is a function changeType, but very little is 
said about what can actually be changed. For instance it does not 
mention whether a number field can be changed to a string. Should I 
assume that if it is not mentioned specifically that it can't be done 
and I would need to code that myself?


Thanks,
Kevin