src/Cmdlets/Test-Object.psm1
|
using namespace System.Data using module ../SqlCommand.psm1 using module ../SqlCommandBuilder.psm1 <# .SYNOPSIS Checks whether an entity with the specified primary key exists. .OUTPUTS `$true` if an entity with the specified primary key exists, otherwise `$false`. #> function Test-Object { [CmdletBinding()] [OutputType([bool])] param ( # The connection to the data source. [Parameter(Mandatory, Position = 0)] [IDbConnection] $Connection, # The type of object to check. [Parameter(Mandatory, Position = 1)] [Type] $Class, # The primary key value. [Parameter(Mandatory, Position = 2, ValueFromPipeline)] [object] $Id, # The wait time, in seconds, before terminating the attempt to execute the command and generating an error. [ValidateRange("NonNegative")] [int] $Timeout = 30, # The transaction within which the command executes. [IDbTransaction] $Transaction ) process { $statement = [SqlCommandBuilder]::new($Connection).GetExistsCommand($Class, $Id) $command = [SqlCommand]::new($statement.Item1.Text) $command.Timeout = $Timeout $command.Transaction = $Transaction Get-Scalar $Connection -As ([bool]) -Command $command -Parameters $statement.Item2 } } |