Template:VIServerGetAncestors
Usage
The input to this template is the Class ID of a class in the VI Server Class Hierarchy. The template then builds the class's inheritance hierarchy through a series of nested if-statements using the Template:VIServerGetParent template. The current limit of nested if-statements is nine (9). Currently, as of LabVIEW 2019, the VI Server Class Hierarchy is only six (6) levels deep, at the deepest.
Syntax is as follows:
{{VIServerGetAncestors|{{{1}}}}}
where:
| Parameter | Description | Default |
|---|---|---|
{{{1}}}
|
The Class ID of a class in the VI Server Class Hierarchy. | |
Example: Class with a Parent
36 is the Class ID of GObject class, whose Parent Class is Generic class, whose Class ID is 3.
{{VIServerGetAncestors|36}}
Result:
Example: Class without a Parent
1 is the Class ID of Application class, which is a top-level class and does not have a Parent Class.
{{VIServerGetAncestors|1}}
Result:
This class is a top-level class.
Example: Class with the deepest inheritance hierarchy
In LabVIEW 2019 there are two classes that are tied with the longest inheritance hierarchy. They are:
- 16462 - ExternalNode class
- 16467 - TimedLoop class
Here we'll use the TimedLoop class ID of 16467.
{{VIServerGetAncestors|16467}}
Result: