AzureRmStorageTableCoreHelper.psm1


<#
.SYNOPSIS
    AzureRmStorageTableCoreHelper.psm1 - PowerShell Module that contains all functions related to manipulating Azure Storage Table rows/entities.
.DESCRIPTION
      AzureRmStorageTableCoreHelper.psm1 - PowerShell Module that contains all functions related to manipulating Azure Storage Table rows/entities.
.NOTES
    This module depends on Az.Accounts, Az.Resources and Az.Storage PowerShell modules
#>

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12

#Requires -modules Az.Storage, Az.Resources

# Deprecated Message
$DeprecatedMessage = "IMPORTANT: This function is deprecated and will be removed in the next release, please use Get-AzTableRow instead."

# Module Functions

function TestAzTableEmptyKeys
{
    param
    (
        [Parameter(Mandatory=$true)]
        $PartitionKey,

        [Parameter(Mandatory=$true)]
        $RowKey
    )

    $CosmosEmptyKeysErrorMessage = "Cosmos DB table API does not accept empty partition or row keys when using CloudTable.Execute operation, because of this we are disabling this capability in this module and it will not proceed." 

    if ([string]::IsNullOrEmpty($PartitionKey) -or [string]::IsNullOrEmpty($RowKey))
    {
        Throw $CosmosEmptyKeysErrorMessage
    }
}

function ExecuteQueryAsync
{
    param
    (
        [Parameter(Mandatory=$true)]
        $Table,
        [Parameter(Mandatory=$true)]
        $TableQuery
    )
    # Internal function
    # Executes query in async mode

    if ($TableQuery -ne $null)
    {
        $token = $null
        $AllRows = @()
        do
        {
            $Results = $Table.ExecuteQuerySegmentedAsync($TableQuery, $token)
            $token = $Results.Result.ContinuationToken
            $AllRows += $Results.Result.Results
            # TakeCount controls the number of results returned per page, not
            # for the entire query. See e.g. the note in
            # https://docs.microsoft.com/azure/cosmos-db/table-storage-design-guide#retrieve-large-numbers-of-entities-from-a-query
            if (($null -ne $token) -and ($null -ne $TableQuery.TakeCount))
            {
                # If the take count is larger than the number of rows in this
                # segment, there are more rows to return.
                if ($TableQuery.TakeCount -gt $Results.Result.Results.Count)
                {
                    $TableQuery.TakeCount -= $Results.Result.Results.Count
                }
                else
                {
                    # No more rows are available in the current page.
                    break
                }
            }
        } while ($token)
    
        return $AllRows
    }
}

function GetPSObjectFromEntity($entityList)
{
    # Internal function
    # Converts entities output from the ExecuteQuery method of table into an array of PowerShell Objects

    $returnObjects = @()

    if (-not [string]::IsNullOrEmpty($entityList))
    {
        foreach ($entity in $entityList)
        {
            $entityNewObj = New-Object -TypeName psobject
            $entity.Properties.Keys | ForEach-Object {Add-Member -InputObject $entityNewObj -Name $_ -Value $entity.Properties[$_].PropertyAsObject -MemberType NoteProperty}

            # Adding table entity other attributes
            Add-Member -InputObject $entityNewObj -Name "PartitionKey" -Value $entity.PartitionKey -MemberType NoteProperty
            Add-Member -InputObject $entityNewObj -Name "RowKey" -Value $entity.RowKey -MemberType NoteProperty
            Add-Member -InputObject $entityNewObj -Name "TableTimestamp" -Value $entity.Timestamp -MemberType NoteProperty
            Add-Member -InputObject $entityNewObj -Name "Etag" -Value $entity.Etag -MemberType NoteProperty

            $returnObjects += $entityNewObj
        }
    }

    return $returnObjects

}


function Get-AzTableTable
{
    <#
    .SYNOPSIS
        Gets a Table object to be used in all other cmdlets.
    .DESCRIPTION
        Gets a Table object to be used in all other cmdlets.
    .PARAMETER resourceGroup
        Resource Group where the Azure Storage Account is located
    .PARAMETER tableName
        Name of the table to retrieve
    .PARAMETER storageAccountName
        Storage Account name where the table lives
    .EXAMPLE
        # Getting storage table object
        $resourceGroup = "myResourceGroup"
        $storageAccount = "myStorageAccountName"
        $TableName = "table01"
        $Table = Get-AzTabletable -resourceGroup $resourceGroup -tableName $TableName -storageAccountName $storageAccount
    #>

    [CmdletBinding()]
    param
    (
        [Parameter(ParameterSetName="AzTableStorage",Mandatory=$true)]
        [string]$resourceGroup,
        
        [Parameter(Mandatory=$true)]
        [String]$TableName,

        [Parameter(ParameterSetName="AzTableStorage",Mandatory=$true)]
        [String]$storageAccountName,
        
        [Parameter(ParameterSetName="AzStorageEmulator",Mandatory=$true)]
        [switch]$UseStorageEmulator
    )
    
    # Validating name
    if ($TableName.Contains("_") -or $TableName.Contains("-"))
    {
        throw "Invalid table name: $TableName"
    } 

    $nullTableErrorMessage = [string]::Empty

    if ($PSCmdlet.ParameterSetName -ne "AzStorageEmulator")
    {
        $keys = Invoke-AzResourceAction -Action listKeys -ResourceType "Microsoft.Storage/storageAccounts" -ApiVersion "2017-10-01" -ResourceGroupName $resourceGroup -Name $storageAccountName -Force

        if ($keys -ne $null)
        {
            if ($PSCmdlet.ParameterSetName -eq "AzTableStorage" )
            {
                $key = $keys.keys[0].value
                $endpoint = "https://{0}.table.core.windows.net"
                $nullTableErrorMessage = "Table $TableName could not be retrieved from $storageAccountName on resource group $resourceGroupName"
            }
            else
            {
                # Future Cosmos implementation
                # $key = $keys.primaryMasterKey
                # $endpoint = "https://{0}.table.Cosmos.azure.com"
                # $nullTableErrorMessage = "Table $TableName could not be retrieved from $<<<TDB VAR>>> on resource group $resourceGroupName"
            }
        }
        else
        {
            throw "An error ocurred while obtaining keys from $storageAccountName."    
        }

        $connString = [string]::Format("DefaultEndpointsProtocol=https;AccountName={0};AccountKey={1};TableEndpoint=$endpoint",$storageAccountName,$key)
        [Microsoft.Azure.Cosmos.Table.CloudStorageAccount]$storageAccount = [Microsoft.Azure.Cosmos.Table.CloudStorageAccount]::Parse($connString)
        [Microsoft.Azure.Cosmos.Table.CloudTableClient]$TableClient = [Microsoft.Azure.Cosmos.Table.CloudTableClient]::new($storageAccount.TableEndpoint,$storageAccount.Credentials)
        [Microsoft.Azure.Cosmos.Table.CloudTable]$Table = [Microsoft.Azure.Cosmos.Table.CloudTable]$TableClient.GetTableReference($TableName)

        $Table.CreateIfNotExistsAsync() | Out-Null
    }
    else
    {
        # https://docs.microsoft.com/en-us/azure/storage/common/storage-use-emulator
        $nullTableErrorMessage = "Table $TableName could not be retrieved from Azure Storage Emulator"
        $connString ="DefaultEndpointsProtocol=http;AccountName=devstoreaccount1;AccountKey=Eby8vdM02xNOcqFlqUwJPLlmEtlCDXJ1OUzFT50uSRZ6IFsuFq2UVErCz4I6tq/K1SZFPTOtr/KBHBeksoGMGw==;TableEndpoint=http://127.0.0.1:10002/devstoreaccount1"
        [Microsoft.Azure.Cosmos.Table.CloudStorageAccount]$storageAccount = [Microsoft.Azure.Cosmos.Table.CloudStorageAccount]::Parse($connString)
        [Microsoft.Azure.Cosmos.Table.CloudTableClient]$TableClient = [Microsoft.Azure.Cosmos.Table.CloudTableClient]::new($storageAccount.TableEndpoint,$storageAccount.Credentials)
        [Microsoft.Azure.Cosmos.Table.CloudTable]$Table = [Microsoft.Azure.Cosmos.Table.CloudTable]$TableClient.GetTableReference($TableName)

        $Table.CreateIfNotExistsAsync() | Out-Null
    }

    # Checking if there a table got returned
    if ($Table -eq $null)
    {
        throw $nullTableErrorMessage
    }

    return $Table
}

function Add-AzTableRow
{
    <#
    .SYNOPSIS
        Adds a row/entity to a specified table
    .DESCRIPTION
        Adds a row/entity to a specified table
    .PARAMETER Table
        Table object of type Microsoft.Azure.Cosmos.Table.CloudTable where the entity will be added
    .PARAMETER PartitionKey
        Identifies the table partition
    .PARAMETER RowKey
        Identifies a row within a partition
    .PARAMETER Property
        Hashtable with the columns that will be part of the entity. e.g. @{"firstName"="Paulo";"lastName"="Marques"}
    .PARAMETER UpdateExisting
        Signalizes that command should update existing row, if such found by PartitionKey and RowKey. If not found, new row is added.
    .EXAMPLE
        # Adding a row
        Add-AzTableRow -Table $Table -PartitionKey $PartitionKey -RowKey ([guid]::NewGuid().tostring()) -property @{"firstName"="Paulo";"lastName"="Costa";"role"="presenter"}
    #>

    [CmdletBinding()]
    param
    (
        [Parameter(Mandatory=$true)]
        $Table,
        
        [Parameter(Mandatory=$true)]
        [AllowEmptyString()]
        [String]$PartitionKey,

        [Parameter(Mandatory=$true)]
        [AllowEmptyString()]
        [String]$RowKey,

        [Parameter(Mandatory=$false)]
        [hashtable]$property,
        [Switch]$UpdateExisting
    )
    
    # Creates the table entity with mandatory PartitionKey and RowKey arguments
    $entity = New-Object -TypeName "Microsoft.Azure.Cosmos.Table.DynamicTableEntity" -ArgumentList $PartitionKey, $RowKey
    
    # Adding the additional columns to the table entity
    foreach ($prop in $property.Keys)
    {
        if ($prop -ne "TableTimestamp")
        {
            $entity.Properties.Add($prop, $property.Item($prop))
        }
    }

    if ($UpdateExisting)
    {
        return ($Table.Execute([Microsoft.Azure.Cosmos.Table.TableOperation]::InsertOrReplace($entity)))
    }
    else
    {
        return ($Table.Execute([Microsoft.Azure.Cosmos.Table.TableOperation]::Insert($entity)))
    }
}

function Get-AzTableRowAll
{
    <#
    .SYNOPSIS
        Returns all rows/entities from a storage table - no Filtering
    .DESCRIPTION
        Returns all rows/entities from a storage table - no Filtering
    .PARAMETER Table
        Table object of type Microsoft.Azure.Cosmos.Table.CloudTable to retrieve entities
    .EXAMPLE
        # Getting all rows
        Get-AzTableRowAll -Table $Table
    #>

    [CmdletBinding()]
    param
    (
        [Parameter(Mandatory=$true)]
        $Table
    )

    Write-Verbose $DeprecatedMessage -Verbose

    # No Filtering

    $Result = Get-AzTableRow -Table $Table

    if (-not [string]::IsNullOrEmpty($Result))
    {
        return $Result
    }

}

function Get-AzTableRowByPartitionKey
{
    <#
    .SYNOPSIS
        Returns one or more rows/entities based on Partition Key
    .DESCRIPTION
        Returns one or more rows/entities based on Partition Key
    .PARAMETER Table
        Table object of type Microsoft.Azure.Cosmos.Table.CloudTable to retrieve entities
    .PARAMETER PartitionKey
        Identifies the table partition
    .PARAMETER Top
        Return only the first n rows from the query
    .EXAMPLE
        # Getting rows by partition Key
        Get-AzTableRowByPartitionKey -Table $Table -PartitionKey "mypartitionkey"
    .EXAMPLE
        # Getting rows by partition key with a maximum number returned
        Get-AzTableRowByPartitionKey -Table $Table -PartitionKey "mypartitionkey" -Top 10
    #>

    [CmdletBinding()]
    param
    (
        [Parameter(Mandatory=$true)]
        $Table,

        [Parameter(Mandatory=$true)]
        [AllowEmptyString()]
        [string]$PartitionKey,

        [Parameter(Mandatory=$false)]
        [Nullable[Int32]]$Top = $null
    )
    
    Write-Verbose $DeprecatedMessage -Verbose

    # Filtering by Partition Key
    $Result = Get-AzTableRow -Table $Table -PartitionKey $PartitionKey -Top $Top

    if (-not [string]::IsNullOrEmpty($Result))
    {
        return $Result
    }

}
function Get-AzTableRowByPartitionKeyRowKey
{
    <#
    .SYNOPSIS
        Returns one entity based on Partition Key and RowKey
    .DESCRIPTION
        Returns one entity based on Partition Key and RowKey
    .PARAMETER Table
        Table object of type Microsoft.Azure.Cosmos.Table.CloudTable to retrieve entities
    .PARAMETER PartitionKey
        Identifies the table partition
    .PARAMETER RowKey
        Identifies the row key in the partition
    .PARAMETER Top
        Return only the first n rows from the query
    .EXAMPLE
        # Getting rows by Partition Key and Row Key
        Get-AzStorageTableRowByPartitionKeyRowKey -Table $Table -PartitionKey "partition1" -RowKey "id12345"
    .EXAMPLE
        # Getting rows by Partition Key and Row Key, with a maximum number returned
        Get-AzStorageTableRowByPartitionKeyRowKey -Table $Table -PartitionKey "partition1" -RowKey "id12345" -Top 10
        #>

    [CmdletBinding()]
    param
    (
        [Parameter(Mandatory=$true)]
        $Table,

        [Parameter(Mandatory=$true)]
        [AllowEmptyString()]
        [string]$PartitionKey,

        [Parameter(Mandatory=$true)]
        [AllowEmptyString()]
        [string]$RowKey,

        [Parameter(Mandatory=$false)]
        [Nullable[Int32]]$Top = $null
    )
    
    # Filtering by Partition Key and Row Key

    Write-Verbose $DeprecatedMessage -Verbose

    $Result = Get-AzTableRow -Table $Table -PartitionKey $PartitionKey -RowKey $RowKey -Top $Top

    if (-not [string]::IsNullOrEmpty($Result))
    {
        return $Result
    }
}

function Get-AzTableRowByColumnName
{
    <#
    .SYNOPSIS
        Returns one or more rows/entities based on a specified column and its value
    .DESCRIPTION
        Returns one or more rows/entities based on a specified column and its value
    .PARAMETER Table
        Table object of type Microsoft.Azure.Cosmos.Table.CloudTable to retrieve entities
    .PARAMETER ColumnName
        Column name to compare the value to
    .PARAMETER Value
        Value that will be looked for in the defined column
    .PARAMETER GuidValue
        Value that will be looked for in the defined column as Guid
    .PARAMETER Operator
        Supported comparison Operator. Valid values are "Equal","GreaterThan","GreaterThanOrEqual","LessThan" ,"LessThanOrEqual" ,"NotEqual"
    .PARAMETER Top
        Return only the first n rows from the query
    .EXAMPLE
        # Getting row by firstname
        Get-AzTableRowByColumnName -Table $Table -ColumnName "firstName" -value "Paulo" -Operator Equal
    .EXAMPLE
        # Getting row by firstname with a maximum number of rows returned
        Get-AzTableRowByColumnName -Table $Table -ColumnName "firstName" -value "Paulo" -Operator Equal -Top 10
    #>

    [CmdletBinding()]
    param
    (
        [Parameter(Mandatory=$true)]
        $Table,

        [Parameter(Mandatory=$true)]
        [string]$ColumnName,

        [Parameter(ParameterSetName="byString",Mandatory=$true)]
        [AllowEmptyString()]
        [string]$Value,

        [Parameter(ParameterSetName="byGuid",Mandatory=$true)]
        [guid]$GuidValue,

        [Parameter(Mandatory=$true)]
        [validateSet("Equal","GreaterThan","GreaterThanOrEqual","LessThan" ,"LessThanOrEqual" ,"NotEqual")]
        [string]$Operator,

        [Parameter(Mandatory=$false)]
        [Nullable[Int32]]$Top = $null
    )

    Write-Verbose $DeprecatedMessage -Verbose

    # Filtering by Columnn Name

    if ($PSCmdlet.ParameterSetName -eq "byString")
    {            
        Get-AzTableRow -Table $Table -ColumnName $ColumnName -value $Value -Operator $Operator -Top $Top
    }
    else
    {
        Get-AzTableRow -Table $Table -ColumnName $ColumnName -GuidValue $GuidValue -Operator $Operator -Top $Top
    }

    if (-not [string]::IsNullOrEmpty($Result))
    {
        return $Result
    }
}

function Get-AzTableRowByCustomFilter
{
    <#
    .SYNOPSIS
        Returns one or more rows/entities based on custom Filter.
    .DESCRIPTION
        Returns one or more rows/entities based on custom Filter. This custom Filter can be
        built using the Microsoft.Azure.Cosmos.Table.TableQuery class or direct text.
    .PARAMETER Table
        Table object of type Microsoft.Azure.Cosmos.Table.CloudTable to retrieve entities
    .PARAMETER CustomFilter
        Custom Filter string.
    .PARAMETER Top
        Return only the first n rows from the query
    .EXAMPLE
        # Getting row by firstname by using the class Microsoft.Azure.Cosmos.Table.TableQuery
    $MyFilter = "(firstName eq 'User1')"
        Get-AzTableRowByCustomFilter -Table $Table -CustomFilter $MyFilter
    .EXAMPLE
        # Getting row by firstname by using text Filter directly (oData Filter format)
        Get-AzTableRowByCustomFilter -Table $Table -CustomFilter "(firstName eq 'User1') and (lastName eq 'LastName1')"
    .EXAMPLE
        # Getting row by firstname by using text Filter directly with a maximum number of rows returned
        Get-AzTableRowByCustomFilter -Table $Table -CustomFilter "(firstName eq 'User1') and (lastName eq 'LastName1')" -Top 10
    #>

    [CmdletBinding()]
    param
    (
        [Parameter(Mandatory=$true)]
        $Table,

        [Parameter(Mandatory=$true)]
        [string]$CustomFilter,

        [Parameter(Mandatory=$false)]
        [Nullable[Int32]]$Top = $null
    )
    
    Write-Verbose $DeprecatedMessage -Verbose

    # Custom Filter

    $Result = Get-AzTableRow -Table $Table -CustomFilter $CustomFilter -Top $Top

    if (-not [string]::IsNullOrEmpty($Result))
    {
        return $Result
    }
}

function Get-AzTableRow
{
    <#
    .SYNOPSIS
        Used to return entities from a table with several options, this replaces all other Get-AzTable<XYZ> cmdlets.
    .DESCRIPTION
        Used to return entities from a table with several options, this replaces all other Get-AzTable<XYZ> cmdlets.
    .PARAMETER Table
        Table object of type Microsoft.Azure.Cosmos.Table.CloudTable to retrieve entities (common to all parameter sets)
    .PARAMETER PartitionKey
        Identifies the table partition (byPartitionKey and byPartRowKeys parameter sets)
    .PARAMETER RowKey
        Identifies the row key in the partition (byPartRowKeys parameter set)
    .PARAMETER SelectColumn
        Names of the properties to return for each entity
    .PARAMETER ColumnName
        Column name to compare the value to (byColummnString and byColummnGuid parameter sets)
    .PARAMETER Value
        Value that will be looked for in the defined column (byColummnString parameter set)
    .PARAMETER GuidValue
        Value that will be looked for in the defined column as Guid (byColummnGuid parameter set)
    .PARAMETER Operator
        Supported comparison Operator. Valid values are "Equal","GreaterThan","GreaterThanOrEqual","LessThan" ,"LessThanOrEqual" ,"NotEqual" (byColummnString and byColummnGuid parameter sets)
    .PARAMETER CustomFilter
        Custom Filter string (byCustomFilter parameter set)
    .PARAMETER Top
        Return only the first n rows from the query (all parameter sets)
    .EXAMPLE
        # Getting all rows
        Get-AzTableRow -Table $Table
    .EXAMPLE
        # Getting specific properties for all rows
        $columns = ('osVersion', 'computerName')
        Get-AzTableRow -Table $Table -SelectColumn $columns
    .EXAMPLE
        # Getting rows by partition key
        Get-AzTableRow -Table $table -partitionKey NewYorkSite
    .EXAMPLE
        # Getting rows by partition and row key
        Get-AzTableRow -Table $table -partitionKey NewYorkSite -rowKey "afc04476-bda0-47ea-a9e9-7c739c633815"
    .EXAMPLE
        # Getting rows by Columnm Name using Guid columns in table
        Get-AzTableRow -Table $Table -ColumnName "id" -guidvalue "5fda3053-4444-4d23-b8c2-b26e946338b6" -operator Equal
    .EXAMPLE
        # Getting rows by Columnm Name using string columns in table
        Get-AzTableRow -Table $Table -ColumnName "osVersion" -value "Windows NT 4" -operator Equal
    .EXAMPLE
        # Getting rows using Custom Filter
        Get-AzTableRow -Table $Table -CustomFilter "(osVersion eq 'Windows NT 4') and (computerName eq 'COMP07')"
    .EXAMPLE
        # Querying with a maximum number of rows returned
        Get-AzTableRow -Table $Table -partitionKey NewYorkSite -Top 10
    #>

    [CmdletBinding()]
    param
    (
        [Parameter(Mandatory=$true,ParameterSetName="GetAll")]
        [Parameter(ParameterSetName="byPartitionKey")]
        [Parameter(ParameterSetName="byPartRowKeys")]
        [Parameter(ParameterSetName="byColummnString")]
        [Parameter(ParameterSetName="byColummnGuid")]
        [Parameter(ParameterSetName="byCustomFilter")]
        $Table,

        [Parameter(ParameterSetName="GetAll")]
        [Parameter(ParameterSetName="byPartitionKey")]
        [Parameter(ParameterSetName="byPartRowKeys")]
        [Parameter(ParameterSetName="byColummnString")]
        [Parameter(ParameterSetName="byColummnGuid")]
        [Parameter(ParameterSetName="byCustomFilter")]
        [System.Collections.Generic.List[string]]$SelectColumn,

        [Parameter(Mandatory=$true,ParameterSetName="byPartitionKey")]
        [Parameter(ParameterSetName="byPartRowKeys")]
        [AllowEmptyString()]
        [string]$PartitionKey,

        [Parameter(Mandatory=$true,ParameterSetName="byPartRowKeys")]
        [AllowEmptyString()]
        [string]$RowKey,

        [Parameter(Mandatory=$true, ParameterSetName="byColummnString")]
        [Parameter(ParameterSetName="byColummnGuid")]
        [string]$ColumnName,

        [Parameter(Mandatory=$true, ParameterSetName="byColummnString")]
        [AllowEmptyString()]
        [string]$Value,

        [Parameter(ParameterSetName="byColummnGuid",Mandatory=$true)]
        [guid]$GuidValue,

        [Parameter(Mandatory=$true, ParameterSetName="byColummnString")]
        [Parameter(ParameterSetName="byColummnGuid")]
        [validateSet("Equal","GreaterThan","GreaterThanOrEqual","LessThan" ,"LessThanOrEqual" ,"NotEqual")]
        [string]$Operator,
        
        [Parameter(Mandatory=$true, ParameterSetName="byCustomFilter")]
        [string]$CustomFilter,

        [Parameter(Mandatory=$false)]
        [Nullable[Int32]]$Top = $null
    )

    $TableQuery = New-Object -TypeName "Microsoft.Azure.Cosmos.Table.TableQuery"

    # Building filters if any
    if ($PSCmdlet.ParameterSetName -eq "byPartitionKey")
    {
        [string]$Filter = `
            [Microsoft.Azure.Cosmos.Table.TableQuery]::GenerateFilterCondition("PartitionKey",`
            [Microsoft.Azure.Cosmos.Table.QueryComparisons]::Equal,$PartitionKey)
    }
    elseif ($PSCmdlet.ParameterSetName -eq "byPartRowKeys")
    {
        [string]$FilterA = `
            [Microsoft.Azure.Cosmos.Table.TableQuery]::GenerateFilterCondition("PartitionKey",`
            [Microsoft.Azure.Cosmos.Table.QueryComparisons]::Equal,$PartitionKey)

        [string]$FilterB = `
            [Microsoft.Azure.Cosmos.Table.TableQuery]::GenerateFilterCondition("RowKey",`
            [Microsoft.Azure.Cosmos.Table.QueryComparisons]::Equal,$RowKey)

        [string]$Filter = [Microsoft.Azure.Cosmos.Table.TableQuery]::CombineFilters($FilterA,"and",$FilterB)
    }
    elseif ($PSCmdlet.ParameterSetName -eq "byColummnString")
    {
        [string]$Filter = `
            [Microsoft.Azure.Cosmos.Table.TableQuery]::GenerateFilterCondition($ColumnName,[Microsoft.Azure.Cosmos.Table.QueryComparisons]::$Operator,$Value)
    }
    elseif ($PSCmdlet.ParameterSetName -eq "byColummnGuid")
    {
        [string]$Filter = `
            [Microsoft.Azure.Cosmos.Table.TableQuery]::GenerateFilterConditionForGuid($ColumnName,[Microsoft.Azure.Cosmos.Table.QueryComparisons]::$Operator,$GuidValue)
    }
    elseif ($PSCmdlet.ParameterSetName -eq "byCustomFilter")
    {
        [string]$Filter = $CustomFilter
    }
    else
    {
        [string]$filter = $null    
    }
    
    # Adding filter if not null
    if (-not [string]::IsNullOrEmpty($Filter))
    {
        $TableQuery.FilterString = $Filter
    }

    # Selecting columns if specified
    if ($null -ne $SelectColumn){
        $TableQuery.SelectColumns = $SelectColumn
    }

    # Set number of rows to return.
    if ($null -ne $Top)
    {
        $TableQuery.TakeCount = $Top
    }

    # Getting results
    if (($TableQuery.FilterString -ne $null) -or ($PSCmdlet.ParameterSetName -eq "GetAll"))
    {
        $Result = ExecuteQueryAsync -Table $Table -TableQuery $TableQuery

        # if (-not [string]::IsNullOrEmpty($Result.Result.Results))
        # {
        # return (GetPSObjectFromEntity($Result.Result.Results))
        # }

        if (-not [string]::IsNullOrEmpty($Result))
        {
            return (GetPSObjectFromEntity($Result))
        }
    }
}
function Update-AzTableRow
{
    <#
    .SYNOPSIS
        Updates a table entity
    .DESCRIPTION
        Updates a table entity. To work with this cmdlet, you need first retrieve an entity with one of the Get-AzTableRow cmdlets available
        and store in an object, change the necessary properties and then perform the update passing this modified entity back, through Pipeline or as argument.
        Notice that this cmdlet accepts only one entity per execution.
        This cmdlet cannot update Partition Key and/or RowKey because it uses those two values to locate the entity to update it, if this operation is required
        please delete the old entity and add the new one with the updated values instead.
    .PARAMETER Table
        Table object of type Microsoft.Azure.Cosmos.Table.CloudTable where the entity exists
    .PARAMETER Entity
        The entity/row with new values to perform the update.
    .EXAMPLE
        # Updating an entity
 
        [string]$Filter = [Microsoft.Azure.Cosmos.Table.TableQuery]::GenerateFilterCondition("firstName",[Microsoft.Azure.Cosmos.Table.QueryComparisons]::Equal,"User1")
        $person = Get-AzTableRowByCustomFilter -Table $Table -CustomFilter $Filter
        $person.lastName = "New Last Name"
        $person | Update-AzTableRow -Table $Table
    #>

    [CmdletBinding()]
    param
    (
        [Parameter(Mandatory=$true)]
        $Table,

        [Parameter(Mandatory=$true,ValueFromPipeline=$true)]
        $entity
    )
    
    # Only one entity at a time can be updated
    $updatedEntityList = @()
    $updatedEntityList += $entity

    if ($updatedEntityList.Count -gt 1)
    {
        throw "Update operation can happen on only one entity at a time, not in a list/array of entities."
    }

    $updatedEntity = New-Object -TypeName "Microsoft.Azure.Cosmos.Table.DynamicTableEntity" -ArgumentList $entity.PartitionKey, $entity.RowKey
    
    # Iterating over PS Object properties to add to the updated entity
    foreach ($prop in $entity.psobject.Properties)
    {
        if (($prop.name -ne "PartitionKey") -and ($prop.name -ne "RowKey") -and ($prop.name -ne "Timestamp") -and ($prop.name -ne "Etag") -and ($prop.name -ne "TableTimestamp"))
        {
            $updatedEntity.Properties.Add($prop.name, $prop.Value)
        }
    }

    $updatedEntity.ETag = $entity.Etag
    $updatedEntity.Timestamp = $entity.TableTimestamp

    # Updating the dynamic table entity to the table
    # return ($Table.ExecuteAsync([Microsoft.Azure.Cosmos.Table.TableOperation]::InsertOrMerge($updatedEntity)))
    return ($Table.Execute([Microsoft.Azure.Cosmos.Table.TableOperation]::InsertOrMerge($updatedEntity)))
}

function Remove-AzTableRow
{
    <#
    .SYNOPSIS
        Remove-AzTableRow - Removes a specified table row
    .DESCRIPTION
        Remove-AzTableRow - Removes a specified table row. It accepts multiple deletions through the Pipeline when passing entities returned from the Get-AzTableRow
        available cmdlets. It also can delete a row/entity using Partition and Row Key properties directly.
    .PARAMETER Table
        Table object of type Microsoft.Azure.Cosmos.Table.CloudTable where the entity exists
    .PARAMETER Entity (ParameterSetName=byEntityPSObjectObject)
        The entity/row with new values to perform the deletion.
    .PARAMETER PartitionKey (ParameterSetName=byPartitionandRowKeys)
        Partition key where the entity belongs to.
    .PARAMETER RowKey (ParameterSetName=byPartitionandRowKeys)
        Row key that uniquely identifies the entity within the partition.
    .EXAMPLE
        # Deleting an entry by entity PS Object
        [string]$Filter1 = [Microsoft.Azure.Cosmos.Table.TableQuery]::GenerateFilterCondition("firstName",[Microsoft.Azure.Cosmos.Table.QueryComparisons]::Equal,"Paulo")
        [string]$Filter2 = [Microsoft.Azure.Cosmos.Table.TableQuery]::GenerateFilterCondition("lastName",[Microsoft.Azure.Cosmos.Table.QueryComparisons]::Equal,"Marques")
        [string]$finalFilter = [Microsoft.Azure.Cosmos.Table.TableQuery]::CombineFilters($Filter1,"and",$Filter2)
        $personToDelete = Get-AzTableRowByCustomFilter -Table $Table -CustomFilter $finalFilter
        $personToDelete | Remove-AzTableRow -Table $Table
    .EXAMPLE
        # Deleting an entry by using PartitionKey and row key directly
        Remove-AzTableRow -Table $Table -PartitionKey "TableEntityDemoFullList" -RowKey "399b58af-4f26-48b4-9b40-e28a8b03e867"
    .EXAMPLE
        # Deleting everything
        Get-AzTableRowAll -Table $Table | Remove-AzTableRow -Table $Table
    #>

    [CmdletBinding()]
    param
    (
        [Parameter(Mandatory=$true)]
        $Table,

        [Parameter(Mandatory=$true,ValueFromPipeline=$true,ParameterSetName="byEntityPSObjectObject")]
        $entity,

        [Parameter(Mandatory=$true,ParameterSetName="byPartitionandRowKeys")]
        [AllowEmptyString()]
        [string]$PartitionKey,

        [Parameter(Mandatory=$true,ParameterSetName="byPartitionandRowKeys")]
        [AllowEmptyString()]
        [string]$RowKey
    )

    begin
    {
        $updatedEntityList = @()
        $updatedEntityList += $entity

        if ($updatedEntityList.Count -gt 1)
        {
            throw "Delete operation cannot happen on an array of entities, altough you can pipe multiple items."
        }
        
        $Results = @()
    }
    
    process
    {
        if ($PSCmdlet.ParameterSetName -eq "byEntityPSObjectObject")
        {
            $PartitionKey = $entity.PartitionKey
            $RowKey = $entity.RowKey
        }

        $TableQuery = New-Object -TypeName "Microsoft.Azure.Cosmos.Table.TableQuery"
        [string]$Filter =  "(PartitionKey eq '$($PartitionKey)') and (RowKey eq '$($RowKey)')"
        $TableQuery.FilterString = $Filter
        $itemToDelete = ExecuteQueryAsync -Table $Table -TableQuery $TableQuery

        if ($itemToDelete -ne $null)
        {
            # Converting DynamicTableEntity to TableEntity for deletion
            $entityToDelete = New-Object -TypeName "Microsoft.Azure.Cosmos.Table.TableEntity"
            $entityToDelete.ETag = $itemToDelete.Etag
            $entityToDelete.PartitionKey = $itemToDelete.PartitionKey
            $entityToDelete.RowKey = $itemToDelete.RowKey

            $Results += $Table.Execute([Microsoft.Azure.Cosmos.Table.TableOperation]::Delete($entityToDelete))
        }
    }
    
    end
    {
        return ,$Results
    }
}

# Aliases

If (-not (Get-Alias -Name Add-StorageTableRow -ErrorAction SilentlyContinue))
{
    New-Alias -Name Add-StorageTableRow -Value Add-AzTableRow
}

If (-not (Get-Alias -Name Add-AzureStorageTableRow -ErrorAction SilentlyContinue))
{
    New-Alias -Name Add-AzureStorageTableRow -Value Add-AzTableRow
}

If (-not (Get-Alias -Name Get-AzureStorageTableTable -ErrorAction SilentlyContinue))
{
    New-Alias -Name Get-AzureStorageTableTable -Value Get-AzTableTable
}

If (-not (Get-Alias -Name Get-AzureStorageTableRowAll -ErrorAction SilentlyContinue))
{
    New-Alias -Name Get-AzureStorageTableRowAll -Value Get-AzTableRowAll
}

If (-not (Get-Alias -Name Get-AzureStorageTableRowByPartitionKey -ErrorAction SilentlyContinue))
{
    New-Alias -Name Get-AzureStorageTableRowByPartitionKey -Value Get-AzTableRowByPartitionKey
}

If (-not (Get-Alias -Name Get-AzureStorageTableRowByPartitionKeyRowKey -ErrorAction SilentlyContinue))
{
    New-Alias -Name Get-AzureStorageTableRowByPartitionKeyRowKey -Value Get-AzTableRowByPartitionKeyRowKey
}

If (-not (Get-Alias -Name Get-AzureStorageTableRowByColumnName -ErrorAction SilentlyContinue))
{
    New-Alias -Name Get-AzureStorageTableRowByColumnName -Value Get-AzTableRowByColumnName
}

If (-not (Get-Alias -Name Get-AzureStorageTableRowByCustomFilter -ErrorAction SilentlyContinue))
{
    New-Alias -Name Get-AzureStorageTableRowByCustomFilter -Value Get-AzTableRowByCustomFilter
}

If (-not (Get-Alias -Name Get-AzureStorageTableRow -ErrorAction SilentlyContinue))
{
    New-Alias -Name Get-AzureStorageTableRow -Value Get-AzTableRow
}

If (-not (Get-Alias -Name Update-AzureStorageTableRow -ErrorAction SilentlyContinue))
{
    New-Alias -Name Update-AzureStorageTableRow -Value Update-AzTableRow
}

If (-not (Get-Alias -Name Remove-AzureStorageTableRow -ErrorAction SilentlyContinue))
{
    New-Alias -Name Remove-AzureStorageTableRow -Value Remove-AzTableRow
}