Mastering Windows PowerShell Scripting - Third Edition

Implementing Get

The Get method should evaluate the current state of the resource. The registry key will exist, but the registry value may be incorrect, or may not exist.

The Get method will act as follows:

• If a the value is present, it will set the Ensure property to Present and update the value of the Description property.
• If the value is not present, it will set the Ensure property to Absent only.

The following snippet implements these actions:

[ComputerDescription] Get() {    $key = Get-Item $this.Path    if ($key.GetValueNames() -contains $this.valueName) {        $this.Ensure = 'Present'        $this.Description = $key.GetValue($this.valueName)    } else {        $this.Ensure = 'Absent'    }    return $this}

The Get method must return an instance of the class. It ...