Public/Select-DataJourney.ps1
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function Select-DataJourney { <# .SYNOPSIS Select from a data journey. .DESCRIPTION Return a copy of a data journey and apply filter on it. #> [CmdletBinding()] param ( # Data journey to select from. [Parameter(Mandatory, ValueFromPipeline)] [PSCustomObject] $Journey, # Models in the data journey diagram. [Parameter()] [string[]] $Model, # Flows in the data journey diagram. [Parameter()] [string[]] $Flow, # Layer in the data journey diagram. [Parameter()] [string] $Layer ) process { # filter data flows $selectedFlowsJourney = New-DataJourney -Title:$Journey.Title $Journey | Select-DataJourneyLayer ` -Target $selectedFlowsJourney ` -Flow:$Flow # prepare model filter $transitiveModels = $selectedFlowsJourney | Get-DataFlow -Recurse | ForEach-Object { $_.Sources | ForEach-Object { $_ } $_.Sinks | ForEach-Object { $_ } } [string[]] $modelFilter = ( $transitiveModels + $Model) | Where-Object { $_ } # filter models $selectedModelsJourney = New-DataJourney -Title:$Journey.Title $selectedFlowsJourney | Select-DataJourneyLayer ` -Target $selectedModelsJourney ` -Model:$modelFilter # prepare layer filter $transitiveLayer = $selectedModelsJourney | Get-DataLayer -Recurse | Where-Object { $_.Layer -or $_.Models } | Where-Object Key | Select-Object -ExpandProperty Key [string[]] $layerFilter = ( $transitiveLayer + $Layer) | Where-Object { $_ } # filter layer $selectedLayerJourney = New-DataJourney -Title:$Journey.Title $selectedModelsJourney | Select-DataJourneyLayer ` -Target $selectedLayerJourney ` -Model:$modelFilter ` -Layer:$layerFilter # return output $selectedLayerJourney | Write-Output } } |