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URL: https://www.cdata.com/kb/tech/couchdb-odbc-coldfusion.rst

⇱ Import Real-Time CouchDB Data via ODBC in ColdFusion to Build Applications

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

👁 Dibyendu Datta
Dibyendu Datta
Lead Technology Evangelist
Use CData ODBC drivers to import and use CouchDB 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 ODBC Driver for CouchDB, you can link your ColdFusion web and mobile applications to operational CouchDB 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 CouchDB data from within a ColdFusion markup file.

To follow along with this tutorial, you need to install the CData ODBC Driver for CouchDB 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.

Set the following to connect:

  • Url: The Url of your instance. For example: http://localhost:5984
  • User The Apache CouchDB user account used to authenticate.
  • Password The Apache CouchDB password associated with the authenticating user.

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 CouchDB 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 CouchDB 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 CDataCouchDBODBC 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="CouchDBQuery" dataSource="CDataCouchDBODBC"> 
 SELECT * FROM Movies 
 </cfquery>
    And a CFTable can be used to quickly output the table in HTML: 
     
 <cftable 
 query = "CouchDBQuery" 
 border = "1" 
 colHeaders 
 colSpacing = "2" 
 headerLines = "2" 
 HTMLTable 
 maxRows = "500" 
 startRow = "1"> 

 <cfcol header="<b>MovieRuntime</b>" align="Left" width=2 text="MovieRuntime"/> 

 <cfcol header="<b>MovieRating</b>" align="Left" width=15 text="MovieRating"/> 

 ...

 </cftable>
    Full code, including the HTML portion is available below: 
     
 <html> 
 <head><title>CData Software | CouchDB Movies Table Demo </title></head> 
 <body> 
 <cfoutput>#ucase("CouchDB Movies Table Demo")#</cfoutput> 
 <cfquery name="CouchDBQuery" dataSource="CDataCouchDBODBC"> 

 SELECT * FROM Movies 

 </cfquery> 
 <cftable 
 query = "CouchDBQuery" 
 border = "1" 
 colHeaders 
 colSpacing = "2" 
 headerLines = "2" 
 HTMLTable 
 maxRows = "500" 
 startRow = "1"> 
 <cfcol header="<b>MovieRuntime</b>" align="Left" width=2 text="MovieRuntime"/> 

 <cfcol header="<b>MovieRating</b>" align="Left" width=15 text="MovieRating"/> 

 ...

 </cftable> 
 </body> 

 </html>
  6. Finally, run the code in a browser. It produces a table populated with CouchDB 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 CouchDB and start building CouchDB-connected applications with Adobe ColdFusion. Reach out to our Support Team if you have any questions.

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CouchDB ODBC Driver

The CouchDB ODBC Driver is a powerful tool that allows you to connect with live data from CouchDB, directly from any applications that support ODBC connectivity.

Access CouchDB data like you would a database - read, write, and update CouchDB. through a standard ODBC Driver interface.