Awesome thanks for the quick response
On Wed, Sep 2, 2009 at 1:29 PM, Ernest Friedman-Hill<[email protected]> wrote:
> Hi Erich,
>
> I have some bad news for your client: this syntax
>
>> {myEnum != MyEnum.ENUMVAL1}
>
> NEVER worked. The test they've written is comparing the myEnum slot to the
> Jess symbol "MyEnum.ENUMVAL1", which, although it wouldn't give an error,
> also never did the right thing. This stopped working because dots in
> variables because significant, and there it, actually, a dot notation you
> can use, although not quite in this context.
>
> Your get-member workaround will work fine, but there are some somewhat nicer
> looking alternatives: either this
>
> http://www.jessrules.com/jesswiki/view?EnumeratedTypes
>
> or the even fancier
>
> http://www.jessrules.com/jesswiki/view?BindEnumUserFunction
>
> depending on how involved the enums are.
>
> On Sep 2, 2009, at 12:05 PM, erich oliphant wrote:
>
>> Hi,
>> I'm helping a client that's currently on a very old Jess 7.0 (b2 I
>> believe) upgrade to the 7.1p2 version. The existing jess code imports
>> some 'constructed' pre- Java 1.5 enums of the form
>>
>> public class MyEnum {
>>
>> public final static ENUMVAL1 = new MyEnum(..);
>> }
>>
>> In the 7.0b Jess code we were able to (import) the MyEnum and
>> reference ENUMVAL1 in expressions like:
>> ...
>> exists (com.somepkg.SomeClass
>> {myEnum != MyEnum.ENUMVAL1})
>> ..
>>
>> Jess 7.1 is not happy about this and reports "Message: Variable used
>> before definition: MyEnum."
>>
>> Just want to verify based on my reading of the latest docs but it
>> seems that this:
>>
>> {myEnum != MyEnum.ENUMVAL1}
>>
>> should be replaced with something like this:
>>
>> {myEnum != (get-member MyEnum ENUMVAL1)}
>>
>> Is this the correct way to address this ?
>>
>> Thanks In Advance,
>> Erich
>>
>>
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>
> ---------------------------------------------------------
> Ernest Friedman-Hill
> Informatics & Decision Sciences Phone: (925) 294-2154
> Sandia National Labs
> PO Box 969, MS 9012 [email protected]
> Livermore, CA 94550 http://www.jessrules.com
>
>
>
>
>
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