在杨列表中访问叶子中的单个叶子

Question

I want to access value of leaf of list in yang module? Ex

       module abc
       {
       list xyz{
       key a;
       leaf a{
           type int
       },
       leaf b{
           type string
       },
       leaf c{
           type string
       },
       leaf d{
           type string
       }
       }
       } 

REST should be like "abc/xyz/(which is key)" ie (abc/xyz/1)

it will give all values of a,b,c,d.

But if I want to access of individual element b,c,d individual which is non key. How can we write REST API?

Answer 1

This is explained in RFC8040, Section 3.5.3 . Here's the example from this section:

Examples:

  container top { list list1 { key "key1 key2 key3"; ... list list2 { key "key4 key5"; ... leaf X { type string; } } } leaf-list Y { type uint32; } } 

For the above YANG definition, the container "top" is defined in the "example-top" YANG module, and a target resource URI for leaf "X" would be encoded as follows:

  /restconf/data/example-top:top/list1=key1,key2,key3/\\ list2=key4,key5/X 

For the above YANG definition, a target resource URI for leaf-list "Y" would be encoded as follows:

  /restconf/data/example-top:top/Y=instance-value 

The following example shows how reserved characters are percent-encoded within a key value. The value of "key1" contains a comma, single-quote, double-quote, colon, double-quote, space, and forward slash (,'":" /). Note that double-quote is not a reserved character and does not need to be percent-encoded. The value of "key2" is the empty string, and the value of "key3" is the string "foo".

Example URL:

  /restconf/data/example-top:top/list1=%2C%27"%3A"%20%2F,,foo 

So in the context of your example, you would do /restconf/data/abc:xyz=my-key/b , /restconf/data/abc:xyz=my-key/c or /restconf/data/abc:xyz=my-key/d , where my-key is the key of the list instance's entry you wish to query.