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- An XML-based equivalent version of YANG is called YIN
- YANG uses a tree to define the hierarchy of data wherein each ‘node’ has a value or/and a set of child nodes
- 4 types of nodes
- leaf container nodes
- list nodes
- container leaf nodes
- leaf-list nodeslist nodes
| Sample YANG (store.yang) | Statements and Description |
|---|
| Code Block |
|---|
| language | text |
|---|
| linenumbers | true |
|---|
| module stores {
yang-version 1.1;
namespace "org:onap:ccsdk:sample";
prefix book-store;
revision "2020-09-15" {
description
"Sample Model";
}
typedef year {
type uint16 {
range "1000..9999";
}
}
container bookstore {
leaf bookstore-name {
type string;
}
list categories {
key "code";
leaf code {
type string;
}
leaf name {
type string;
}
list books {
key title;
leaf title {
type string;
}
leaf-list authors {
type string;
}
}
}
}
}
|
| module Statement - YANG language defines models with modules and submodules
- Takes one argument (module name) which is the identifier
- Groups all statements that belong to the module
- This module example contains the following statements for header information:
- yang-version statement
- namespace statement
- prefix statement
- revision statements
|
|
|
|
|
|
Figure 1.1 Schema tree of module 'stores'
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