On Sun, Jun 16, 2013 at 12:07 PM, Ben Coman <btc(a)openinworld.com> wrote:
**
Eyesee-Core(AndrewHora.100) extends Dictionary to add class method
#keys:values:
Here is the outline...
---
| dict |
dict := Dictionary new.
...
^dict
---
So if I have [ Dictionary subclass: LEKImportedEnterpriseArchitectPackage ]
then [ x := LEKImportedEnterpriseArchitectPackage keys: { #a . #b }
values: { 1 . 2 } ]
ends up with 'x' containing a Dictionary rather than a
LEKImportedEnterpriseArchitectPackage.
Is that a defect or by design ?
I believe it is a defect.
Just updated the instantiation from "dict := Dictionary new" to "dict :=
self new.".
Now you x is a LEKImportedEnterpriseArchitectPackage.
I know there is some philosophy about avoiding subclassing collection
classes so that they are used more "HAS A" rather than "IS A", but
I'm not
completely clear on that. My purpose is fairly simple providing a
temporary staging point for records that I read in from a DBF file which I
want to extract into my application format, to which I adding some
convenience methods just to simply the import code.
For example, there is no more logic in
LEKImportedEnterpriseArchitectPackage besides getter methods like...
---
packageID
^ self at: ‘Package_ID’
---
_primaryKey
^ self packageID
---
cheers -ben
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--
Andre Hora