RE: Attribute index clarification

Clarification to the request for clarification.
J

When I said: “  It clearly should not imply that all single-instance attributes SHALL have index 0.“,  I meant to say: “It clearly should not imply that all attributes that have a single instance SHALL have index 0.” For example, you can have a custom attribute x-attr with a single value at index 1.

“What I’m also trying to understand is how to deal with non-zero single instance attributes” should read – “What I’m also trying to understand is how to deal with the attributes that are allowed to have multiple instances, only containing one, with the index other than 0”.

Let’s see if I can express my questions in a form of “KMIP pseudo-code”.

register <object> x-attr#0=value0 x-attr#1=value1
delete attribute <object> x-attr#0
modify attribute <object> x-attr=newvalue
 <- - should this return an error  or modify x-attr#1?
get attributes <object> x-attr
     <- - should this return an empty list since index 1 was not specified? If it does return a value at index 1, should it also return the index itself as it does here:

Response Message (0x42007b)
0x01
0x00000110
  Response Header (0x42007a)
0x01
0x00000048
    Protocol Version (0x420069)
0x01
0x00000020
      Protocol Version Major (0x42006a)
0x02
0x00000004
0x00000001
      Protocol Version Minor (0x42006b)
0x02
0x00000004
0000000000
    Time Stamp (0x420092)
0x09
0x00000008
2011-07-18 22:38:25 GMT
    Batch Count (0x42000d)
0x02
0x00000004
0x00000001
  Batch Item (0x42000f)
0x01
0x000000b8
    Operation (0x42005c)
0x05
0x00000004
0x0000000e
    Unique Batch Item ID (0x420093)
0x08
0x00000001
38
    Result Status (0x42007f)
0x05
0x00000004
0000000000
    Response Payload (0x42007c)
0x01
0x00000080
      Unique Identifier (0x420094)
0x07
0x00000040
83916B87CD4C20CC27A41DE16A47352750523787C9CBF98CD8618BE9E3D5854C
      Attribute (0x420008)
0x01
0x00000030
        Attribute Name (0x42000a)
0x07
0x00000006
x-attr
        Attribute Index (0x420009)
0x02
0x00000004
0x00000001
        Attribute Value (0x42000b)
0x07
0x00000008
newvalue

or can it skip it as it does here:

Response Message (0x42007b)
0x01
0x00000100
  Response Header (0x42007a)
0x01
0x00000048
    Protocol Version (0x420069)
0x01
0x00000020
      Protocol Version Major (0x42006a)
0x02
0x00000004
0x00000001
      Protocol Version Minor (0x42006b)
0x02
0x00000004
0000000000
    Time Stamp (0x420092)
0x09
0x00000008
2011-07-18 22:37:04 GMT
    Batch Count (0x42000d)
0x02
0x00000004
0x00000001
  Batch Item (0x42000f)
0x01
0x000000a8
    Operation (0x42005c)
0x05
0x00000004
0x0000000e
    Unique Batch Item ID (0x420093)
0x08
0x00000001
37
    Result Status (0x42007f)
0x05
0x00000004
0000000000
    Response Payload (0x42007c)
0x01
0x00000070
      Unique Identifier (0x420094)
0x07
0x00000040
83916B87CD4C20CC27A41DE16A47352750523787C9CBF98CD8618BE9E3D5854C
      Attribute (0x420008)
0x01
0x00000020
        Attribute Name (0x42000a)
0x07
0x00000006
x-attr
        Attribute Value (0x42000b)
0x07
0x00000008
newvalue


Denis
From:
Pochuev,Denis
Sent:  Monday, July 18, 2011 11:19 AM
To:  ''
Subject:  Attribute index clarification

All,

I was wondering if I can get a clarification on the part of the spec that describes the attribute index handling. Here’s the relevant sentence: “ Attributes that have a single instance have an Attribute Index of 0, which is assumed if the Attribute Index is not specified. ”.

I don’t understand how to interpret the first part of the sentence. It clearly should not imply that all single-instance attributes SHALL have index 0. What exactly is it saying?

Regarding the second part of the sentence, where exactly is the index not specified? Is it a part of a Register operation? Is it a part of Get Attributes or Add/Modify/Delete Attributes? Is it the same in for all of these operations?

I believe the intent was to say that if during Register the index is skipped by the client, the server should assign it index 0. Is that correct?

What I’m also trying to understand is how to deal with non-zero single instance attributes. For example, suppose I have a single attribute of index 1 and my client intending to modify this attribute does not include an index, what should the result of the operation be? In the same situation, if the client is sending Get Attributes, should the index be returned along with the attribute?

Thank you for your help,
Denis
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