Re: User Index APIs

[David Morris <dmorris@xxxxxxxxxxxxx>]

Simon,

Thank you for clearly explaining what I could not understand from the manual.  
I feel a lot better 
knowing that the code we have is working by design rather than chance.  I did 
not understand 
that the bytes available and returned in the entry lengths and entry offsets 
structure described itself.  
I thought the length of entry lengths and entry offsets was doing that.  Should 
have realized that 
it was input to the API.

Thanks,

David Morris

>> Date: Mon, 02 Feb 98 14:34:31 -0700
>> From: "David Morris" <dmorris@plumcreek.com>

>>The code we are using was based on trial and error testing.  It works for the 
>8 user indexes that we 
have but it would be nice to understand what is going on.
>> 
>> Thanks for any input,
>> 
>> David Morris
>>

>>> "Simon Coulter" <shc@flybynight.com.au> 02/03 2:54 AM >>>

>So for your situation I think you will find that the BytesAvailable and 
>BytesReturned values of 16 
refer to the length/offset space which has the following structure:
 1 EntOff
  2 BytesAvailable bin(4)
  2 BytesReturned bin(4)
  2 FirstEntryLength bin(4)
  2 FirstEntryOffset bin(4)
for a total of 16-bytes.

>You should also find that the BytesAvaliable and BytesReturned in the RcvVar 
>structure reflect the 
proper values i.e., BytesAvailable = 20 and BytesReturned = 20
 1 RcvVar
  2 BytesAvailable bin(4)
  2 BytesReturned bin(4)
  2 FirstEntry char(12)
   3 FirstEntryKey char(8)
   3 FirstEntryValue char(4)


>Clear as mud, eh?

>Regards,
>Simon Coulter.

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