helpers/Convert-SPClientMemberAccessExpression.ps1
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#Requires -Version 3.0 # Convert-SPClientMemberAccessExpression.ps1 # # Copyright (c) 2017 karamem0 # # Permission is hereby granted, free of charge, to any person obtaining a copy # of this software and associated documentation files (the "Software"), to deal # in the Software without restriction, including without limitation the rights # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell # copies of the Software, and to permit persons to whom the Software is # furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included in all # copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE # SOFTWARE. function Convert-SPClientMemberAccessExpression { [CmdletBinding()] param ( [Parameter(Position = 0, Mandatory = $true)] [String] $InputString, [Parameter(Position = 1, Mandatory = $true)] [System.Linq.Expressions.Expression] $Expression ) process { $expr = $Expression $type = $Expression.Type $buffer = '' for ($index = 0; $index -lt $InputString.Length; $index += 1) { if ($InputString[$index] -eq '.') { $prop = $type.GetProperty($buffer.Trim()) if ($prop -eq $null) { throw '"' + $type + '" doesn''t contain "' + $buffer.Trim() + '".' } $expr = [System.Linq.Expressions.Expression]::Property($expr, $prop) $type = $prop.PropertyType $buffer = '' continue } $buffer += $InputString[$index] } if (Test-GenericSubclassOf -InputType $type -TestType 'Microsoft.SharePoint.Client.ClientObjectCollection`1') { $expr = Convert-SPClientIncludeExpression -InputString $buffer -Expression $expr } else { $prop = $type.GetProperty($buffer.Trim()) if ($prop -eq $null) { throw '"' + $type + '" doesn''t contain "' + $buffer.Trim() + '".' } $expr = [System.Linq.Expressions.Expression]::Property($expr, $prop) } Write-Output $expr } } |