Build Apps with Live Cvent Data Using the Low-Code Development Platform of Mendix

Mendix, developed by Siemens, is a low-code platform used to rapidly develop, test, and deploy web and mobile applications, facilitating digital transformation and enhancing business agility. When paired with the CData JDBC Driver for Cvent, you can use your Cvent data to create various applications using Mendix Studio Pro.

With built-in optimized data processing, the CData JDBC Driver offers unmatched performance for interacting with live Cvent data. When you issue complex SQL queries to Cvent, the driver pushes supported SQL operations, like filters and aggregations, directly to Cvent 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 Cvent data using native data types.

This article shows how you can easily create an application that utilizes Cvent data in Mendix by combining the JDBC interface provided by Mendix with the CData JDBC Driver for Cvent.

Preparing the Mendix environment

In this section, we will explore how to develop an app using Mendix Studio Pro, as previously introduced, with Cvent data. Be sure to install Mendix Studio Pro beforehand.

Install the CData JDBC Driver for Cvent

First, install the CData JDBC Driver for Cvent on the same machine as Mendix. The JDBC Driver will be installed in the following path:

Create an application

Now let's start creating the app. First, let's make an app that has the Database Connector available.

1. Launch Mendix Studio Pro and click 'Create New App.'
2. Select the 'Blank Web App' option.
3. Click 'Use this starting point' to proceed.
4. Create an app with a name of your choice. Also, note down the "Disk location" information, for future reference.
5. You have now created a brand-new app.

Add the Database Connector to your application

Next, add the Database Connector module to the app you just created.

1. On the top right, click on the Marketplace button.
2. Search for Database Connector in the Marketplace search section and select it.
3. Click on Download to download the latest Database Connector.
4. In the Import Module window, select the Action as Add as a new module.
5. If the Database Connector appears on the app screen, you are good to move on to the next steps.

Adding the JDBC Driver to Mendix Studio Pro

To use the CData JDBC driver with this Database Connector, you must add the JDBC Driver JAR file to your project.

1. In the Mendix project folder you noted earlier, there is a folder named 'userlib.' Place the two files, 'cdata.jdbc.cvent.jar' and 'cdata.jdbc.cvent.lic,' into that folder.
2. You can now use the CData JDBC Driver with the Database Connector.

Create a Data Model

Now, let's create an app. We first need to define a data model to load data from the Database Connector and display it on the list screen. Let's create the data model before loading the data.

1. Add an Entity to the 'Domain model' of MyFirstModule.
2. Enter the entity name and field definitions.
3. You can easily configure the data by checking the table definition information through the CData JDBC driver using a tool such as DBeaver.
4. Define the entities.

Create a constant for the JDBC URL

Next, create a JDBC URL constant to use with the Database Connector.

1. Add 'Constant' to MyFirstModule.
2. Add a name to the Constant in the Add Constant window.

3. Generate a JDBC URL for connecting to Cvent, beginning with jdbc:cvent: followed by a series of semicolon-separated connection string properties.

   Before you can authenticate to Cvent, you must create a workspace and an OAuth application.

   Creating a Workspace

   To create a workspace:

   1. Sign into Cvent and navigate to App Switcher (the blue button in the upper right corner of the page) >> Admin.
   2. In the Admin menu, navigate to Integrations >> REST API.
   3. A new tab launches for Developer Management. Click on Manage API Access in the new tab.
   4. Create a Workspace and name it. Select the scopes you would like your developers to have access to. Scopes control what data domains the developer can access.
      • Choose All to allow developers to choose any scope, and any future scopes added to the REST API.
      • Choose Custom to limit the scopes developers can choose for their OAuth apps to selected scopes. To access all tables exposed by the driver, you need to set the following scopes:

        event/attendees:read	event/attendees:write	event/contacts:read
        event/contacts:write	event/custom-fields:read	event/custom-fields:write
        event/events:read	event/events:write	event/sessions:delete
        event/sessions:read	event/sessions:write	event/speakers:delete
        event/speakers:read	event/speakers:write	budget/budget-items:read
        budget/budget-items:write	exhibitor/exhibitors:read	exhibitor/exhibitors:write
        survey/surveys:read	survey/surveys:write

   Creating an OAuth Application

   After you have set up a Workspace and invited them, developers can sign up and create a custom OAuth app. See the Creating a Custom OAuth Application section in the Help documentation for more information.

   Connecting to Cvent

   After creating an OAuth application, set the following connection properties to connect to Cvent:

   • InitiateOAuth: GETANDREFRESH. Used to automatically get and refresh the OAuthAccessToken.
   • OAuthClientId: The Client ID associated with the OAuth application. You can find this on the Applications page in the Cvent Developer Portal.
   • OAuthClientSecret: The Client secret associated with the OAuth application. You can find this on the Applications page in the Cvent Developer Portal.

   Built-in Connection String Designer

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

   java -jar cdata.jdbc.cvent.jar

   Fill in the connection properties and copy the connection string to the clipboard.

   A typical JDBC URL is below:

   jdbc:cvent:OAuthClientId=MyOAuthClientId;OAuthClientSecret=MyOAuthClientSecret;InitiateOAuth=GETANDREFRESH
4. Specify the connection string copied from the previous step in the Default value section and click on OK.

Create a microflow to retrieve Cvent data

Let's create a microflow that retrieves data from the Database Connector based on the entity we created.

1. Click 'Add microflow' from MyFirstModule.
2. Create a microflow with any name.
3. First, create an object for the entity you defined earlier. Then, add the 'Create Object' action to the microflow.
4. Click on the 'Select' button for Entity in the Create Object window.
5. Select a previously defined Entity.
6. Enter an arbitrary Object name and click OK.
7. Next, add an Execute Query action to the microflow to retrieve data from the Database Connector.
8. Define each input in the Execute Query window.
9. In "jdbc url", specify the constant you defined beforehand.
10. In SQL, write a query to retrieve data from Cvent.
11. You don't need a Username or Password this time, so set them to 'empty' and assign the object created in the previous flow as the Result object. Then, simply specify any name you prefer for the List in the List Name section.
12. Finally, define the output of the microflow.
13. Double-click the End Event to open it, select 'List' from the Type dropdown, and link it to the Entity you defined earlier. Then, set the output result of Execute Query as the Return value.
14. This completes the microflow that retrieves data from Cvent.

Create a list screen and link it to a microflow

Finally, let's create a screen that displays the results obtained from the microflow.

1. Double-click 'Home_web' inside the Toolbox menu to open it.
2. Drag and drop a Data grid template from the Data containers section into the list screen.
3. Once you have placed the Data grid, double-click on it to display the Edit Data Grid settings screen.
4. Navigate to the Data source tab and link the data source type with the Microflow.
5. Select the microflow you just created.
6. Now click OK.
7. When you click OK, you'll be prompted to auto-detect columns. Simply click 'Yes' to proceed.
8. Next, you'll be prompted to generate controllers for various Data grids. Since we won't be configuring the logic for each one this time, click 'No.'
9. This will create a simple data grid screen as shown below.

Try it out

Now let's check if it works properly.

1. Click the 'Publish' button to prepare the app you created. Once that's done, click 'View App' to open the app.
2. If you see a list of Cvent data like the one below, you're all set! You've successfully created a Cvent-linked app with low code, without needing to worry about Cvent's API.

Get Started Today

Download a free 30-day trial of the CData JDBC Driver for Cvent with Mendix, and effortlessly create an app that connects to Cvent data.

Reach out to our Support Team if you have any questions.