helpers/Invoke-SPClientLoadQuery.ps1
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#Requires -Version 3.0 # Invoke-SPClientLoadQuery.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 Invoke-SPClientLoadQuery { [CmdletBinding()] param ( [Parameter(Position = 0, Mandatory = $true)] [Microsoft.SharePoint.Client.ClientContext] $ClientContext = $SPClient.ClientContext, [Parameter(Position = 1, Mandatory = $true)] [Microsoft.SharePoint.Client.ClientObject] $ClientObject, [Parameter(Position = 2, Mandatory = $false)] [String] $Retrievals ) process { $objType = $ClientObject.GetType() $funcType = [Type]'System.Func`2' | ForEach-Object { $_.MakeGenericType($objType, [Object]) } $exprType = [Type]'System.Linq.Expressions.Expression`1' | ForEach-Object { $_.MakeGenericType($funcType) } $listType = [Type]'System.Collections.Generic.List`1' | ForEach-Object { $_.MakeGenericType($exprType) } $exprList = New-Object $listType $loadMethod = $ClientContext.GetType().GetMethod('Load').MakeGenericMethod($objType) if (-not [String]::IsNullOrEmpty($Retrievals)) { if (Test-GenericSubclassOf -InputType $objType -TestType 'Microsoft.SharePoint.Client.ClientObjectCollection`1') { $paramExpr = [System.Linq.Expressions.Expression]::Parameter($objType, $objType.Name) $propExpr = Convert-SPClientIncludeExpression -InputString $Retrievals -Expression $paramExpr $lambdaExpr = [System.Linq.Expressions.Expression]::Lambda($funcType, $propExpr, $paramExpr) $exprList.Add($lambdaExpr) | Out-Null } else { $paramExpr = [System.Linq.Expressions.Expression]::Parameter($objType, $objType.Name) $buffer = '' $depth = 0 for ($index = 0; $index -lt $Retrievals.Length; $index += 1) { if ($Retrievals[$index] -eq ',') { if ($depth -eq 0) { $propExpr = Convert-SPClientMemberAccessExpression -InputString $buffer.Trim() -Expression $paramExpr $castExpr = [System.Linq.Expressions.Expression]::Convert($propExpr, [Object]) $lambdaExpr = [System.Linq.Expressions.Expression]::Lambda($funcType, $castExpr, $paramExpr) $exprList.Add($lambdaExpr) | Out-Null $buffer = '' continue } } if ($Retrievals[$index] -eq '.') { if ($Retrievals.Substring($index + 1).StartsWith('Include(')) { $depth += 1 } } if ($Retrievals[$index] -eq ')') { $depth -= 1 } $buffer += $Retrievals[$index] } if ($depth -ne 0) { throw 'Braces is not closed.' } $propExpr = Convert-SPClientMemberAccessExpression -InputString $buffer.Trim() -Expression $paramExpr $castExpr = [System.Linq.Expressions.Expression]::Convert($propExpr, [Object]) $lambdaExpr = [System.Linq.Expressions.Expression]::Lambda($funcType, $propExpr, $paramExpr) $exprList.Add($lambdaExpr) | Out-Null } } $loadMethod.Invoke($ClientContext, @($ClientObject, $exprList.ToArray())) | Out-Null $ClientContext.ExecuteQuery() } } |