Import Real-Time Redshift Data in ColdFusion to Build Applications



Use CData JDBC drivers to import and use Redshift data in ColdFusion.

Adobe ColdFusion is a web and mobile application development platform. It uses its own scripting language, ColdFusion Markup Language (CFML), to create data-driven websites as well as generate remote services, such as REST.

When ColdFusion is paired with the CData JDBC Driver for Amazon Redshift, you can link your ColdFusion web and mobile applications to operational Redshift data. This allows for your applications to be more robust and complete. This article details how to use the JDBC driver to create a table populated with Redshift data from within a ColdFusion markup file.

With built-in optimized data processing, the CData JDBC Driver offers unmatched performance for interacting with live Redshift data. When you issue complex SQL queries to Redshift, the driver pushes supported SQL operations, like filters and aggregations, directly to Redshift and utilizes the embedded SQL engine to process unsupported operations client-side (often SQL functions and JOIN operations). Its built-in dynamic metadata querying allows you to work with and analyze Redshift data using native data types.

Configuring the Connection to Redshift

You will need a JDBC connection string to establish a connection between Coldfusion and Redshift.

To connect to Redshift, set the following:

  • Server: Set this to the host name or IP address of the cluster hosting the Database you want to connect to.
  • Port: Set this to the port of the cluster.
  • Database: Set this to the name of the database. Or, leave this blank to use the default database of the authenticated user.
  • User: Set this to the username you want to use to authenticate to the Server.
  • Password: Set this to the password you want to use to authenticate to the Server.

You can obtain the Server and Port values in the AWS Management Console:

  1. Open the Amazon Redshift console (http://console.aws.amazon.com/redshift).
  2. On the Clusters page, click the name of the cluster.
  3. On the Configuration tab for the cluster, copy the cluster URL from the connection strings displayed.

Built-in Connection String Designer

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

java -jar cdata.jdbc.redshift.jar

Adding a Data Source and Creating a Table

After configuring the connection, follow the steps below to add the CData JDBC Driver to ColdFusion's lib directory, add a new data source, test the connection, create a ColdFusion markup file, and, finally, make a real-time connection with Redshift data and display it in a table written in the ColdFusion Markup Language, or CFML:

  1. Copy the JDBC Driver for Redshift and lic file from "C:\Program Files\CData[product_name]\lib" to "C:\ColdFusion2021\cfusion\wwwroot\WEB-INF\lib". cdata.jdbc.redshift.jar cdata.jdbc.redshift.lic

    Note: If you do not copy the .lic file with the jar, you will see a licensing error that indicates you do not have a valid license installed. This is true for both the trial and full versions.

  2. From the ColdFusion administrator interface, choose Data & Services.
  3. Here, we can "Add New Data Source". The data source name can be any name, provided it conforms to the ColdFusion variable naming conventions. For our JDBC driver, choose "other", then click the "Add" button.
  4. Next, populate the driver properties.
    • JDBC URL will need to be in the format: jdbc:redshift:|connectionString|.
    • A typical connection string looks like this:

      jdbc:redshift:User=admin;Password=admin;Database=dev;Server=examplecluster.my.us-west-2.redshift.amazonaws.com;Port=5439;

    • The Driver Class is: cdata.jdbc.redshift.RedshiftDriver
    • The Driver Name is arbitrary and simply used to recognize the data source in the ColdFusion administration console.
  5. Now, test the connection by clicking the check mark to the left of the CDataRedshiftJDBC data source you just created. When the data source reports an "OK" status, it is ready for use.
  6. Next, create a new ColdFusion Markup file (.cfm) and place it in the wwwroot directory ("C:\ColdFusion2021\cfusion\wwwroot") for ColdFusion.

    The following code queries the data source:

                
            <cfquery name="RedshiftQuery" dataSource="CDataRedshiftJDBC"> 
              SELECT * FROM Orders 
            </cfquery> 
        
    And a CFTable can be used to quickly output the table in HTML:
                
              <cftable  
              query = "RedshiftQuery" 
              border = "1" 
              colHeaders 
              colSpacing = "2" 
              headerLines = "2" 
              HTMLTable 
              maxRows = "500" 
              startRow = "1"> 
    
              <cfcol header="<b>ShipName</b>" align="Left" width=2 text="ShipName"/> 
    
              <cfcol header="<b>ShipCity</b>" align="Left" width=15 text="ShipCity"/> 
    
              ...
    
            </cftable> 
        
    Full code, including the HTML portion is available below:
                
            <html> 
            <head><title>CData Software | Redshift Orders Table Demo </title></head> 
            <body> 
            <cfoutput>#ucase("Redshift Orders Table Demo")#</cfoutput> 
            <cfquery name="RedshiftQuery" dataSource="CDataRedshiftJDBC"> 
    
              SELECT * FROM Orders 
    
            </cfquery> 
            <cftable  
              query = "RedshiftQuery" 
              border = "1" 
              colHeaders 
              colSpacing = "2" 
              headerLines = "2" 
              HTMLTable 
              maxRows = "500" 
              startRow = "1"> 
              <cfcol header="<b>ShipName</b>" align="Left" width=2 text="ShipName"/> 
    
              <cfcol header="<b>ShipCity</b>" align="Left" width=15 text="ShipCity"/> 
    
              ...
    
            </cftable> 
            </body> 
    
            </html>  
        
  7. Finally, run the code locally in a browser at the default port of 8500. It produces a table populated with Redshift data!

As a note, the CData JDBC Drivers also support parameterized queries using the cfqueryparam element. For example: SELECT * FROM Account WHERE name =

Get Started Today

Download a free, 30-day trial of the CData JDBC Driver for Redshift and start building Redshift-connected applications with Adobe ColdFusion. Reach out to our Support Team if you have any questions.

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