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Connect to CSV Data from PowerBuilder

This article demonstrates how to access CSV data from PowerBuilder using the CSV JDBC Driver.

The CData JDBC Driver for CSV is a standards-based control that can be used from any platform or development technology that supports JDBC, including PowerBuilder. This article shows how to use the CData JDBC Driver for CSV in PowerBuilder.

This article shows how to create a basic PowerBuilder application that uses the CData JDBC Driver for CSV to retrieve data.

Connect to CSV Data from PowerBuilder

Follow the steps below to use the Database Painter tool to create a database profile based on an JDBC URL for CSV. You can use a database profile to save connection properties. In the Database Painter, you can graphically manipulate data as well as execute SQL queries.

  1. Add the driver JAR to the PowerBuilder classpath. Set the CLASSPATH system environment variable to the path to the driver JAR, located in the lib subfolder of the installation directory.

    Note: If you are using PowerBuilder Classic, you can also add the path to the driver JAR by clicking Tools -> System Options -> Java.

  2. Click Tools -> Database Painter.
  3. Right-click the JDBC node and click New Profile.
  4. In the Database Profile Setup dialog, enter the following:
    • Profile Name: Enter a user-friendly name for the profile.
    • Driver Name: Enter the class name of the driver, cdata.jdbc.csv.CSVDriver
    • URL: Enter the JDBC URL.

      The DataSource property must be set to a valid local folder name.

      Also, specify the IncludeFiles property to work with text files having extensions that differ from .csv, .tab, or .txt. Specify multiple file extensions in a comma-separated list. You can also set Extended Properties compatible with the Microsoft Jet OLE DB 4.0 driver. Alternatively, you can provide the format of text files in a Schema.ini file.

      Set UseRowNumbers to true if you are deleting or updating in CSV. This will create a new column with the name RowNumber which will be used as key for that table.

      Built-in Connection String Designer

      For assistance in constructing the JDBC URL, use the connection string designer built into the CSV JDBC Driver. Either double-click the JAR file or execute the jar file from the command-line.

      java -jar cdata.jdbc.csv.jar

      Fill in the connection properties and copy the connection string to the clipboard. A typical JDBC URL is below:

      jdbc:csv:DataSource=MyCSVFilesFolder;
  5. To view and modify a table, right-click a table and then click Edit Data -> Grid.

Using CSV Data with PowerBuilder Controls

You can use standard PowerBuilder objects to connect to JDBC data sources and execute queries. The following example shows how to retrieve CSV data into a DataWindow. You can add the following code to the open method:

SQLCA.DBMS = "JDBC" SQLCA.AutoCommit = False SQLCA.DBParm = "Driver='cdata.jdbc.csv.CSVDriver',URL='jdbc:csv:DataSource=MyCSVFilesFolder;"; CONNECT USING SQLCA; dw_customer.SetTransObject(SQLCA); dw_customer.Retrieve();