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�� , �� Post�KJUninstall.ps1:

Param($UninstallLogFilePath)
$file = $UninstallLogFilePath

Add-PSSnapin Microsoft.SharePoint.PowerShell

$powerPivotFeatures = @("1a33a234-b4a4-4fc6-96c2-8bdb56388bd5", "e9c4784b-d453-46f5-8559-3c891d7159dd", "f8c51e81-0b46-4535-a3d5-244f63e1cab9")
$premiumSiteId = "8581a8a7-cf16-4770-ac54-260265ddb0b2"

#Remove PowerPivot features.
foreach($featureId in $powerPivotFeatures)
{
	if(Get-SPFeature | where {$_.Id -eq $featureId})
	{
		Write-Host "Found feature $featureId"
		Uninstall-SPFeature -Id $featureId -force
	}
}

# Verify that the premium site feature was indeed removed.
$premiumSiteFeature = Get-SPFeature | where {$_.Id -eq $premiumSiteId}
if($premiumSiteFeature -eq $null)
{
	# Reinstall the feature
	Install-SPFeature -path PremiumSite
}

switch -regex -file $file
{
	"de-activating feature"	{
					# This will return every entry in the file for feature deactivation
					$Url = $_.Split() | ?{$_ -match "http://([a-zA-Z0-9_\-]+)([\.][[a-zA-Z0-9_\-]+)*(\:[0-9]+)*(/\S*)?"}
					#Remove the period at the end
					$Url = $Url.Substring(0, $Url.Length - 1)
					# Match the Guid for the feature.
					$Id = $_.Split() | ?{$_ -match "([0-9a-fA-F]){8}-([0-9a-fA-F]){4}-([0-9a-fA-F]){4}-([0-9a-fA-F]){4}-([0-9a-fA-F]){12}"}
					if(!($powerPivotFeatures -contains $Id))
					{
						Write-Host "Reactivating feature $Id on site $Url"
					    Enable-SPFeature -Id $Id -Url $Url
						trap 
							{
								Write-Host "Could not Re-activate feature $Id on site $Url"
								Write-Host $("Exception: "+ $_.Exception.Message);
								continue
							}
					}

					continue
				}
}

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Bootstrap\Log\ %ProgramFiles%\Microsoft Sql Server\100\Setup
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