YumaWorks

In this article the following simple YANG data model will be used for illustration:

module example {
  namespace "http://www.yumaworks.com/ns/example";
  prefix example;

  revision "2019-01-01";

  container cont1 {
      list list1 {
          key "name";
          leaf name {
              type string;
          }
      }
  }
}

Now, for example, when we have a val_value structure that represent container "cont1" and all its children, we can use the following loop to iterate through its children list:

{
    /* this is the parent val_value that represents "cont1" container */
    val_value_t *parentval;

    /* this is the first list in the Queue */
    val_value_t *chval = val_get_first_child(parentval);
    if (!chval) {
        // there is no children
    }

    /* now we can iterate through all the list entries */
    for (; chval != NULL; chval = val_get_next_child(chval)) {

        val_value_t *key_val =
            val_find_child(chval,
                           (const xmlChar *)"example",   // module name 
                           (const xmlChar *)"name");     // child leaf name to find
        if (!key_val) {
            /* there is no key; should not happen; list should always have keys */
        }

    }
}