> On 19 Nov 2015, at 10:38, Martin Bjorklund <[email protected]> wrote:
>
> Andy Bierman <[email protected]> wrote:
>> Hi,
>>
>> This text in 7.21.5 is not clear:
>>
>> A leaf that is a list key MUST NOT have a "when" statement.
>>
>> I think you mean that no when-stmt can use the key leaf as
>> a context node.
>>
>> These are illegal in YANG 1.1 I think:
>>
>>
>> augment /listX {
>> when "foo";
>> leaf key1 { ... }
>> }
>
> Why would this be illegal? You didn't show the definition of listX,
> but it cannot have "key1" as one of its keys.
I think Andy has a point, here is a complete example:
leaf foo {
type empty;
}
list array {
key "key1";
leaf bar {
type empty;
}
}
augment "/array" {
when "../foo";
leaf key1 {
type uint8;
}
}
Without the "when" statement it is perfectly okay but here the presence of
"foo" makes "key1" disappear but "array" remains.
>
>> OR
>>
>>
>> list listX {
>> key key1;
>> uses grouping1 {
>> when "foo";
>> // leaf key1 added via grouping
>> }
>> }
>
> Why would this be illegal?
Similar as above.
Lada
>
>> There are more ways that the key-leaf can inherit a when-stmt
>> but you get the idea.
>
> I don't think a key leaf can "inherit" a when statement.
>
>> The phrase "have a when-stmt" should be clear.
>> It implies that the when-stmt is a sub-statement of the leaf-stmt
>> but this is only 1 way the key leaf can be conditional.
>
>
>
> /martin
>
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