Import Real-Time Google Data Catalog Data via ODBC in ColdFusion to Build Applications

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 ODBC Driver for Google Data Catalog, you can link your ColdFusion web and mobile applications to operational Google Data Catalog data. This allows for your applications to be more robust and complete. This article details how to use the ODBC driver to create a table populated with Google Data Catalog data from within a ColdFusion markup file.

To follow along with this tutorial, you need to install the CData ODBC Driver for Google Data Catalog and Adobe ColdFusion.

Configuring the Connection

If you have not already, first specify connection properties in an ODBC DSN (Data Source Name). This is the last step of the driver installation process. You can use the Microsoft ODBC Data Source Administrator to create and configure ODBC DSNs.

Google Data Catalog uses the OAuth authentication standard. Authorize access to Google APIs on behalf on individual users or on behalf of users in a domain.

Before connecting, specify the following to identify the organization and project you would like to connect to:

• OrganizationId: The ID associated with the Google Cloud Platform organization resource you would like to connect to. Find this by navigating to the cloud console.

  Click the project selection drop-down, and select your organization from the list. Then, click More -> Settings. The organization ID is displayed on this page.

• ProjectId: The ID associated with the Google Cloud Platform project resource you would like to connect to.

  Find this by navigating to the cloud console dashboard and selecting your project from the Select from drop-down. The project ID will be present in the Project info card.

When you connect, the OAuth endpoint opens in your default browser. Log in and grant permissions to the application to completes the OAuth process. For more information, refer to the OAuth section in the Help documentation.

Adding a Data Source and Creating a Table

After creating a DSN, follow the steps below to add a new data source, test our connection to it, create a ColdFusion markup file, and, finally, import Google Data Catalog Data and display it in a table in ColdFusion:

1. From the ColdFusion administrator interface, choose Data & Services. 👁 Selecting Data & Services
   
2. Here, click "Add New Data Source". The data source name can be any name, provided it conforms to the ColdFusion variable naming conventions. For our ODBC driver, choose "ODBC Socket", then click the "Add" button. 👁 Adding Data Source Name
   
3. From the ODBC DSN Dropdown menu select CData Google Data Catalog Sys. Under the Advanced Settings section, leave the Connection String blank. Note that any properties specified in this input field will override the ones specified in the DSN Configuration. 👁 Populating driver properties
   
4. Now, test the connection by pressing the check mark to the left of the CDataGoogle Data CatalogODBC data source you just created. When the data source reports an "OK" status, it is ready for use. 👁 Testing the connection
   
5. 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="Google Data CatalogQuery" dataSource="CDataGoogle Data CatalogODBC"> 
    SELECT * FROM Schemas 
    </cfquery> 
    

   And a CFTable can be used to quickly output the table in HTML:

    
    <cftable 
    query = "Google Data CatalogQuery" 
    border = "1" 
    colHeaders 
    colSpacing = "2" 
    headerLines = "2" 
    HTMLTable 
    maxRows = "500" 
    startRow = "1"> 
   
    <cfcol header="<b>Type</b>" align="Left" width=2 text="Type"/> 
   
    <cfcol header="<b>DatasetName</b>" align="Left" width=15 text="DatasetName"/> 
   
    ...
   
    </cftable> 
    

   Full code, including the HTML portion is available below:

    
    <html> 
    <head><title>CData Software | Google Data Catalog Schemas Table Demo </title></head> 
    <body> 
    <cfoutput>#ucase("Google Data Catalog Schemas Table Demo")#</cfoutput> 
    <cfquery name="Google Data CatalogQuery" dataSource="CDataGoogle Data CatalogODBC"> 
   
    SELECT * FROM Schemas 
   
    </cfquery> 
    <cftable 
    query = "Google Data CatalogQuery" 
    border = "1" 
    colHeaders 
    colSpacing = "2" 
    headerLines = "2" 
    HTMLTable 
    maxRows = "500" 
    startRow = "1"> 
    <cfcol header="<b>Type</b>" align="Left" width=2 text="Type"/> 
   
    <cfcol header="<b>DatasetName</b>" align="Left" width=15 text="DatasetName"/> 
   
    ...
   
    </cftable> 
    </body> 
   
    </html> 
    

6. Finally, run the code in a browser. It produces a table populated with Google Data Catalog data! 👁 Running the code
   

As a note, the CData ODBC 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 ODBC Driver for Google Data Catalog and start building Google Data Catalog-connected applications with Adobe ColdFusion. Reach out to our Support Team if you have any questions.