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URL: https://www.cdata.com/kb/tech/elasticsearch-ado-powerbuilder.rst

⇱ Connect to Elasticsearch Data from PowerBuilder via ADO.NET

Connect to Elasticsearch Data from PowerBuilder via ADO.NET

👁 Jerod Johnson
Jerod Johnson
Director, Technology Evangelism
This article demonstrates how to access Elasticsearch data from Appeon PowerBuilder using the CData ADO.NET Provider for Elasticsearch.

This article demonstrates using the CData ADO.NET Provider for Elasticsearch in PowerBuilder, showcasing the ease of use and compatibility of these standards-based controls across various platforms and development technologies that support Microsoft .NET, including Appeon PowerBuilder.

This article shows how to create a basic PowerBuilder application that uses the CData ADO.NET Provider for Elasticsearch to perform reads and writes.

About Elasticsearch Data Integration

Accessing and integrating live data from Elasticsearch has never been easier with CData. Customers rely on CData connectivity to:

  • Access both the SQL endpoints and REST endpoints, optimizing connectivity and offering more options when it comes to reading and writing Elasticsearch data.
  • Connect to virtually every Elasticsearch instance starting with v2.2 and Open Source Elasticsearch subscriptions.
  • Always receive a relevance score for the query results without explicitly requiring the SCORE() function, simplifying access from 3rd party tools and easily seeing how the query results rank in text relevance.
  • Search through multiple indices, relying on Elasticsearch to manage and process the query and results instead of the client machine.

Users frequently integrate Elasticsearch data with analytics tools such as Crystal Reports, Power BI, and Excel, and leverage our tools to enable a single, federated access layer to all of their data sources, including Elasticsearch.

For more information on CData's Elasticsearch solutions, check out our Knowledge Base article: CData Elasticsearch Driver Features & Differentiators.


Getting Started


  1. In a new WPF Window Application solution, add all the Visual Controls needed for the connection properties. Below is a typical connection string:

    Server=127.0.0.1;Port=9200;User=admin;Password=123456;

    Set the Server and Port connection properties to connect. To authenticate, set the User and Password properties, PKI (public key infrastructure) properties, or both. To use PKI, set the SSLClientCert, SSLClientCertType, SSLClientCertSubject, and SSLClientCertPassword properties.

    The data provider uses X-Pack Security for TLS/SSL and authentication. To connect over TLS/SSL, prefix the Server value with 'https://'. Note: TLS/SSL and client authentication must be enabled on X-Pack to use PKI.

    Once the data provider is connected, X-Pack will then perform user authentication and grant role permissions based on the realms you have configured.

  2. Add the DataGrid control from the .NET controls.
  3. Configure the columns of the DataGrid control. Below are several columns from the Account table: 
    <DataGrid AutoGenerateColumns="False" Margin="13,249,12,14" Name="datagrid1" TabIndex="70" ItemsSource="{Binding}">
<DataGrid.Columns>
 <DataGridTextColumn x:Name="idColumn" Binding="{Binding Path=Id}" Header="Id" Width="SizeToHeader" />
 <DataGridTextColumn x:Name="nameColumn" Binding="{Binding Path=OrderName}" Header="OrderName" Width="SizeToHeader" />
		...
	</DataGrid.Columns>
</DataGrid>
  4. Add a reference to the CData ADO.NET Provider for Elasticsearch assembly.

Connect the DataGrid

Once the visual elements have been configured, you can use standard ADO.NET objects like Connection, Command, and DataAdapter to populate a DataTable with the results of an SQL query: 

System.Data.CData.Elasticsearch.ElasticsearchConnection conn 
conn = create System.Data.CData.Elasticsearch.ElasticsearchConnection(connectionString)

System.Data.CData.Elasticsearch.ElasticsearchCommand comm 
comm = create System.Data.CData.Elasticsearch.ElasticsearchCommand(command, conn)

System.Data.DataTable table
table = create System.Data.DataTable

System.Data.CData.Elasticsearch.ElasticsearchDataAdapter dataAdapter
dataAdapter = create System.Data.CData.Elasticsearch.ElasticsearchDataAdapter(comm)
dataAdapter.Fill(table)	
datagrid1.ItemsSource=table.DefaultView

The code above can be used to bind data from the specified query to the DataGrid.