Automate HarperDB Integration Tasks from PowerShell

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HarperDB ADO.NET Provider

Rapidly create and deploy powerful .NET applications that integrate with HarperDB.



Are you looking for a quick and easy way to access HarperDB data from PowerShell? We show how to use the Cmdlets for HarperDB and the CData ADO.NET Provider for HarperDB to connect to HarperDB data and synchronize, automate, download, and more.

The CData Cmdlets for HarperDB are standard PowerShell cmdlets that make it easy to accomplish data cleansing, normalization, backup, and other integration tasks by enabling real-time and bidirectional access to HarperDB.

Cmdlets or ADO.NET?

The cmdlets are not only a PowerShell interface to the HarperDB API, but also an SQL interface; this tutorial shows how to use both to create, retrieve, update, and delete HarperDB data. We also show examples of the ADO.NET equivalent, which is possible with the CData ADO.NET Provider for HarperDB. To access HarperDB data from other .NET applications, like LINQPad, use the CData ADO.NET Provider for HarperDB.

After obtaining the needed connection properties, accessing HarperDB data in PowerShell consists of three basic steps.

Set the Server, User, and Password connection properties to connect to HarperDB. Set UseSSL to secure connections with TLS/SSL.

PowerShell

  1. Install the module:

    Install-Module HarperDBCmdlets
  2. Connect:

    $harperdb = Connect-HarperDB -Server "$Server" -User "$User" -Password "$Password"
  3. Search for and retrieve data:

    $country = "US" $customers = Select-HarperDB -Connection $harperdb -Table "Customers" -Where "Country = `'$Country`'" $customers

    You can also use the Invoke-HarperDB cmdlet to execute SQL commands:

    $customers = Invoke-HarperDB -Connection $harperdb -Query 'SELECT * FROM Customers WHERE Country = @Country' -Params @{'@Country'='US'}

ADO.NET

  1. Load the provider's assembly:

    [Reflection.Assembly]::LoadFile("C:\Program Files\CData\CData ADO.NET Provider for HarperDB\lib\System.Data.CData.HarperDB.dll")
  2. Connect to HarperDB:

    $conn= New-Object System.Data.CData.HarperDB.HarperDBConnection("Server=127.0.0.1;User=admin;Password=1234;") $conn.Open()
  3. Instantiate the HarperDBDataAdapter, execute an SQL query, and output the results:

    $sql="SELECT City, CompanyName from Customers" $da= New-Object System.Data.CData.HarperDB.HarperDBDataAdapter($sql, $conn) $dt= New-Object System.Data.DataTable $da.Fill($dt) $dt.Rows | foreach { Write-Host $_.city $_.companyname }

Update HarperDB Data

PowerShell

Update-HarperDB -Connection $HarperDB -Columns @('City','CompanyName') -Values @('MyCity', 'MyCompanyName') -Table Customers -Id "MyId"

ADO.NET

$cmd = New-Object System.Data.CData.HarperDB.HarperDBCommand("UPDATE Customers SET Country='US' WHERE Id = @myId", $conn) $cmd.Parameters.Add(new System.Data.CData.HarperDB.HarperDBParameter("@myId","10456255-0015501366")) $cmd.ExecuteNonQuery()

Insert HarperDB Data

PowerShell

Add-HarperDB -Connection $HarperDB -Table Customers -Columns @("City", "CompanyName") -Values @("MyCity", "MyCompanyName")

ADO.NET

$cmd = New-Object System.Data.CData.HarperDB.HarperDBCommand("INSERT INTO Customers (Country) VALUES (@myCountry)", $conn) $cmd.Parameters.Add(new System.Data.CData.HarperDB.HarperDBParameter("@myCountry","US")) $cmd.ExecuteNonQuery()

Delete HarperDB Data

PowerShell

Remove-HarperDB -Connection $HarperDB -Table "Customers" -Id "MyId"

ADO.NET

$cmd = New-Object System.Data.CData.HarperDB.HarperDBCommand("DELETE FROM Customers WHERE Id=@myId", $conn) $cmd.Parameters.Add(new System.Data.CData.HarperDB.HarperDBParameter("@myId","001d000000YBRseAAH")) $cmd.ExecuteNonQuery()