Private/ConvertTo-AtwsFilter.ps1
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<#
.COPYRIGHT Copyright (c) Office Center Hønefoss AS. All rights reserved. Licensed under the MIT license. See https://github.com/officecenter/Autotask/blob/master/LICENSE.md for license information. #> Function ConvertTo-AtwsFilter { <# .SYNOPSIS This function converts a parameter set of a Get-function to a parsable approximation of a PowerShell filter. .DESCRIPTION This function converts a parameter set of a Get-function to a parsable approximation of a PowerShell filter. Due to internal scope contraints the function needs to be dot.sourced in the calling function. This function is not stand alone. It uses several variables that only exist in the calling scope, another reason it needs to be dot.sourced. This is not best practice, but it is still by design. .INPUTS System.Collections.Generic.Dictionary`2[System.String,System.Object]] .OUTPUTS [String[]] .EXAMPLE $Element | ConvertTo-AtwsDate -ParameterName <ParameterName> Converts variable $Element with must contain a single DateTime value to a string representation of the Date or the DateTime, based on the parameter name. .NOTES NAME: ConvertTo-AtwsFilter #> [cmdletbinding()] Param ( [Parameter( Mandatory = $True, ValueFromPipeline = $True )] [System.Collections.Generic.Dictionary`2[System.String,System.Object]] $BoundParameters, [Parameter( Mandatory = $True )] [ValidateScript({ $Script:FieldInfoCache.Keys -contains $_ })] [String] $EntityName ) Begin { # Enable modern -Debug behavior If ($PSCmdlet.MyInvocation.BoundParameters['Debug'].IsPresent) {$DebugPreference = 'Continue'} Write-Debug ('{0}: Begin of function' -F $MyInvocation.MyCommand.Name) # Set up TimeZone offset handling If (-not($script:ESTzone)) { $script:ESTzone = [System.TimeZoneInfo]::FindSystemTimeZoneById("Eastern Standard Time") } If (-not($script:ESToffset)) { $Now = Get-Date $ESTtime = [System.TimeZoneInfo]::ConvertTimeFromUtc($Now.ToUniversalTime(), $ESTzone) $script:ESToffset = (New-TimeSpan -Start $ESTtime -End $Now).TotalHours } [String[]]$Filter = @() } Process { Write-Debug ('{0}: Query based on parameters, parsing' -F $MyInvocation.MyCommand.Name) $Fields = Get-AtwsFieldInfo -Entity $EntityName Foreach ($Parameter in $BoundParameters.GetEnumerator()) { $Field = $Fields | Where-Object {$_.Name -eq $Parameter.Key} # If Parameter value is null or an empty string for string types, add name to $IsNull array # and continue If (($Field.Type -ne 'String' -and $Null -eq $Parameter.Value) -or ($Field.Type -eq 'String' -and $Parameter.Value.Length -eq 0)) { If ($IsNull -notcontains $Parameter.Key) { $IsNull += $Parameter.Key } Continue } If ($Field -or $Parameter.Key -eq 'UserDefinedField') { If ($Parameter.Value.Count -gt 1) { $Filter += '-begin' } Foreach ($ParameterValue in $Parameter.Value) { $Operator = '-or' $ParameterName = $Parameter.Key If ($Field.IsPickList) { If ($Field.PickListParentValueField) { $ParentField = $Fields.Where{$_.Name -eq $Field.PickListParentValueField} $ParentLabel = $PSBoundParameters.$($ParentField.Name) $ParentValue = $ParentField.PickListValues | Where-Object {$_.Label -eq $ParentLabel} $PickListValue = $Field.PickListValues | Where-Object {$_.Label -eq $ParameterValue -and $_.ParentValue -eq $ParentValue.Value} } Else { $PickListValue = $Field.PickListValues | Where-Object {$_.Label -eq $ParameterValue} } $Value = $PickListValue.Value } ElseIf ($ParameterName -eq 'UserDefinedField') { $Filter += '-udf' $ParameterName = $ParameterValue.Name $Value = $ParameterValue.Value } ElseIf ($ParameterValue.GetType().Name -eq 'DateTime') { If ($ParameterValue -eq $ParameterValue.Date -and $Parameter.Key -notin $GreaterThan -and $Parameter.Key -notin $GreaterThanOrEquals -and $Parameter.Key -notin $LessThan -and $Parameter.Key -notin $LessThanOrEquals) { # User is searching for a date, not a specific datetime $Filter += $ParameterName $Filter += '-ge' $Filter += ConvertTo-AtwsDate -ParameterName $ParameterName -DateTime $ParameterValue $LessThanOrEquals += $ParameterName $Value = ConvertTo-AtwsDate -ParameterName $ParameterName -DateTime $ParameterValue.AddDays(1) } Else { $Value = ConvertTo-AtwsDate -ParameterName $ParameterName -DateTime $ParameterValue } } Else { $Value = $ParameterValue } $Filter += $ParameterName If ($Parameter.Key -in $NotEquals) { $Filter += '-ne' $Operator = '-and' } ElseIf ($Parameter.Key -in $GreaterThan) { $Filter += '-gt'} ElseIf ($Parameter.Key -in $GreaterThanOrEquals) { $Filter += '-ge'} ElseIf ($Parameter.Key -in $LessThan) { $Filter += '-lt'} ElseIf ($Parameter.Key -in $LessThanOrEquals) { $Filter += '-le'} ElseIf ($Parameter.Key -in $Like) { $Filter += '-like' $Value = $Value -replace '\*', '%' } ElseIf ($Parameter.Key -in $NotLike) { $Filter += '-notlike' $Value = $Value -replace '\*', '%' } ElseIf ($Parameter.Key -in $BeginsWith) { $Filter += '-beginswith'} ElseIf ($Parameter.Key -in $EndsWith) { $Filter += '-endswith'} ElseIf ($Parameter.Key -in $Contains) { $Filter += '-contains'} ElseIf ($Parameter.Key -in $IsThisDay) { $Filter += '-isthisday'} ElseIf ($Parameter.Key -in $IsNull -and $Parameter.Key -eq 'UserDefinedField') { $Filter += '-IsNull' $IsNull = $IsNull.Where({$_ -ne 'UserDefinedField'}) } ElseIf ($Parameter.Key -in $IsNotNull -and $Parameter.Key -eq 'UserDefinedField') { $Filter += '-IsNotNull' $IsNotNull = $IsNotNull.Where({$_ -ne 'UserDefinedField'}) } Else { $Filter += '-eq'} # Add Value to expression, unless this is a UserDefinedfield AND UserDefinedField has been # specified for -IsNull or -IsNotNull If ($Filter[-1] -notin @('-IsNull','-IsNotNull')) {$Filter += $Value} If ($Parameter.Value.Count -gt 1 -and $ParameterValue -ne $Parameter.Value[-1]) { $Filter += $Operator } ElseIf ($Parameter.Value.Count -gt 1) { $Filter += '-end' } } } } # IsNull and IsNotNull are special. They are the only operators that does not require a value to work If ($IsNull.Count -gt 0) { If ($Filter.Count -gt 0) { $Filter += '-and' } Foreach ($PropertyName in $IsNull) { $Filter += $PropertyName $Filter += '-isnull' } } If ($IsNotNull.Count -gt 0) { If ($Filter.Count -gt 0) { $Filter += '-and' } Foreach ($PropertyName in $IsNotNull) { $Filter += $PropertyName $Filter += '-isnotnull' } } } End { Return $Filter } } |