dbatools

1.1.34

functions/Get-DbaRgClassifierFunction.ps1

                                function Get-DbaRgClassifierFunction {

    <#

    .SYNOPSIS

        Gets the Resource Governor custom classifier Function

    .DESCRIPTION

        Gets the Resource Governor custom classifier Function which is used for customize the workload groups usage

    .PARAMETER SqlInstance

        The target SQL Server instance or instances

    .PARAMETER SqlCredential

        Login to the target instance using alternative credentials. Accepts PowerShell credentials (Get-Credential).

        Windows Authentication, SQL Server Authentication, Active Directory - Password, and Active Directory - Integrated are all supported.

        For MFA support, please use Connect-DbaInstance.

    .PARAMETER InputObject

        Allows input to be piped from Get-DbaResourceGovernor

    .PARAMETER EnableException

        By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message.

        This avoids overwhelming you with "sea of red" exceptions, but is inconvenient because it basically disables advanced scripting.

        Using this switch turns this "nice by default" feature off and enables you to catch exceptions with your own try/catch.

    .NOTES

        Tags: Migration, ResourceGovernor

        Author: Alessandro Alpi (@suxstellino), alessandroalpi.blog

        Website: https://dbatools.io

        Copyright: (c) 2018 by dbatools, licensed under MIT

        License: MIT https://opensource.org/licenses/MIT

    .LINK

        https://dbatools.io/Get-DbaRgClassifierFunction

    .EXAMPLE

        PS C:\> Get-DbaRgClassifierFunction -SqlInstance sql2016

        Gets the classifier function from sql2016

    .EXAMPLE

        PS C:\> 'Sql1','Sql2/sqlexpress' | Get-DbaResourceGovernor | Get-DbaRgClassifierFunction

        Gets the classifier function object on Sql1 and Sql2/sqlexpress instances

    #>

    [CmdletBinding()]

    param (

        [DbaInstanceParameter[]]$SqlInstance,

        [PSCredential]$SqlCredential,

        [parameter(ValueFromPipeline)]

        [Microsoft.SqlServer.Management.Smo.ResourceGovernor[]]$InputObject,

        [switch]$EnableException

    )

    process {

        foreach ($instance in $SqlInstance) {

            $InputObject += Get-DbaResourceGovernor -SqlInstance $SqlInstance -SqlCredential $SqlCredential

        }

        foreach ($resourcegov in $InputObject) {

            $server = $resourcegov.Parent

            $classifierFunction = $null

            foreach ($currentFunction in $server.Databases["master"].UserDefinedFunctions) {

                $fullyQualifiedFunctionName = [string]::Format("[{0}].[{1}]", $currentFunction.Schema, $currentFunction.Name)

                if ($fullyQualifiedFunctionName -eq $InputObject.ClassifierFunction) {

                    $classifierFunction = $currentFunction

                }

            }

            if ($classifierFunction) {

                Add-Member -Force -InputObject $classifierFunction -MemberType NoteProperty -Name ComputerName -value $resourcegov.ComputerName

                Add-Member -Force -InputObject $classifierFunction -MemberType NoteProperty -Name InstanceName -value $resourcegov.InstanceName

                Add-Member -Force -InputObject $classifierFunction -MemberType NoteProperty -Name SqlInstance -value $resourcegov.SqlInstance

                Add-Member -Force -InputObject $classifierFunction -MemberType NoteProperty -Name Database -value 'master'

            }

            Select-DefaultView -InputObject $classifierFunction -Property ComputerName, InstanceName, SqlInstance, Database, Schema, CreateDate, DateLastModified, Name, DataType

        }

    }

}

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