Hold or release a job or group

This PowerShell script uses the adTempus API to hold or release a specified job or group.

param (
    [string]$server = ".",
    [ValidateSet('hold','release')]
    [string]$action = "",
    [string]$job = "",
    [string]$group = ""
 )
add-type -path "c:\program files\arcana development\adtempus\4.0\ArcanaDevelopment.adTempus.Client.dll"
$adtempus=[ArcanaDevelopment.adTempus.Client.Scheduler]::Connect($server,[ArcanaDevelopment.adTempus.Shared.LoginAuthenticationType]::Windows,"","")
$context=$adtempus.NewDataContext()

if($job -ne "")
{
    $target=$context.GetJob($job)
}
elseif($group -ne "")
{
    if($group.Equals("\"))
    {
        $group=""
    }
    $target=$context.GetJobGroup($group)
}
else
{
    write-host ("Specify -job or -group")
}

if($target -ne $null)
{
    if($action.Equals("hold"))
    {
        $target.UpdateHoldType([ArcanaDevelopment.adTempus.Shared.HoldType]::DisableAll, [ArcanaDevelopment.adTempus.Shared.MissedJobCheckOptions]::NoCheck)
        write-host ("Held " + $target.ClassName + " " + $target.GetDescription())
    }
    elseif($action.Equals("release"))
    {
        $target.UpdateHoldType([ArcanaDevelopment.adTempus.Shared.HoldType]::NotHeld, [ArcanaDevelopment.adTempus.Shared.MissedJobCheckOptions]::NoCheck)
        write-host ("Released " + $target.ClassName + " " + $target.GetDescription())
    }
    else
    {
        write-host ("Invalid action")
    }
}
if($adTempus -ne $null)
{
    $adTempus.Dispose()
}