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Get the Report →Connect to BigQuery in SpagoBI
Create reports featuring live BigQuery data in SpagoBI Studio. Host BigQuery reports on SpagoBI Server.
The CData JDBC Driver for BigQuery enables you to connect to live BigQuery data from business intelligence and data mining tools that support the JDBC standard. This article shows how to integrate BigQuery data into a report in SpagoBI Studio and host it on SpagoBI Server.
About BigQuery Data Integration
CData simplifies access and integration of live Google BigQuery data. Our customers leverage CData connectivity to:
- Simplify access to BigQuery with broad out-of-the-box support for authentication schemes, including OAuth, OAuth JWT, and GCP Instance.
- Enhance data workflows with Bi-directional data access between BigQuery and other applications.
- Perform key BigQuery actions like starting, retrieving, and canceling jobs; deleting tables; or insert job loads through SQL stored procedures.
Most CData customers are using Google BigQuery as their data warehouse and so use CData solutions to migrate business data from separate sources into BigQuery for comprehensive analytics. Other customers use our connectivity to analyze and report on their Google BigQuery data, with many customers using both solutions.
For more details on how CData enhances your Google BigQuery experience, check out our blog post: https://www.cdata.com/blog/what-is-bigquery
Getting Started
- Deploy the Driver in SpagoBI Server
- Create a Report in SpagoBI Studio
- Host BigQuery Reports on SpagoBI Server
Deploy the JDBC Driver in SpagoBI Server
Follow the steps to create a JDBC data source for BigQuery in SpagoBI Server.
- Copy the driver JAR into %CATALINA_BASE%/lib. These files are located in the lib subfolder of the installation directory.
Add a BigQuery driver resource to the context. The following resource definition can be added to the GlobalNamingResources element in server.xml:
<Resource name="jdbc/googlebigquery" auth="Container" type="javax.sql.DataSource" driverclassname="cdata.jdbc.googlebigquery.GoogleBigQueryDriver" factory="org.apache.tomcat.jdbc.pool.DataSourceFactory" maxactive="20" maxidle="10" maxwait="-1"/>
- Add the following resource link to give access to Web applications. For this article, add the following line to META-INF\context.xml for SpagoBI.
<ResourceLink global="jdbc/googlebigquery" name="jdbc/googlebigquery" type="javax.sql.DataSource"/>
- Restart the server.
After adding the driver to the resources for the SpagoBI server, add the data source: In SpagoBI, click Resources -> Data Source -> Add and enter the following information:
- Label: Enter a unique identifier for the driver.
- Description: Enter a description for the driver.
- Dialect: Select Default Dialect.
- Read Only: Select the read-only option. This option determines whether the data source is the default database to save datasets created by the end user.
- Type: Select JDBC.
- URL: Enter the JDBC URL using the required connection string properties:
Google uses the OAuth authentication standard. To access Google APIs on behalf of individual users, you can use the embedded credentials or you can register your own OAuth app.
OAuth also enables you to use a service account to connect on behalf of users in a Google Apps domain. To authenticate with a service account, you will need to register an application to obtain the OAuth JWT values.
In addition to the OAuth values, you will need to specify the DatasetId and ProjectId. See the "Getting Started" chapter of the help documentation for a guide to using OAuth.
Built-in Connection String Designer
For assistance in constructing the JDBC URL, use the connection string designer built into the BigQuery JDBC Driver. Either double-click the JAR file or execute the jar file from the command-line.
java -jar cdata.jdbc.googlebigquery.jar
Fill in the connection properties and copy the connection string to the clipboard.
A typical JDBC URL is below:
jdbc:googlebigquery:DataSetId=MyDataSetId;ProjectId=MyProjectId;InitiateOAuth=GETANDREFRESH
- Driver: Enter the class name for the driver: cdata.jdbc.googlebigquery.GoogleBigQueryDriver
Create Reports in SpagoBI Studio
Follow the steps below to populate reports based on BigQuery data in SpagoBI Studio. You will create a dataset that populates a chart with the results of an SQL query. In the next section, you will host this report on SpagoBI Server.
First, you will need to connect to BigQuery data from a report in SpagoBI Studio:
- In SpagoBI Studio, click File -> New -> Project and select Report Project in the Business Intelligence and Reporting Tools folder.
- Click File -> New -> Report and select Blank Report.
- In the Data Explorer view, right-click Data Sources and click New Data Source.
- Select JDBC Data Source and enter a name for the data source.
- Click Manage Drivers and click Add to add the driver JAR, cdata.jdbc.googlebigquery.jar. The driver JAR is located in the lib subfolder of the installation directory.
- In the Driver Class menu, select the driver class, cdata.jdbc.googlebigquery.GoogleBigQueryDriver.
- In the Database URL box, enter the JDBC URL. A typical JDBC URL is below:
jdbc:googlebigquery:DataSetId=MyDataSetId;ProjectId=MyProjectId;InitiateOAuth=GETANDREFRESH
See the "Getting Started" chapter of the driver help for a guide to obtaining the required connection properties.
After you have connected to BigQuery data, create a dataset that contains the results of an SQL query:
- Right-click the DataSet folder and click New Data Set. Select the JDBC data source for BigQuery and enter a name for the dataset.
- Build the SQL query. In this example, this query will be used to add a chart to the dashboard. For example:
SELECT OrderName, Freight FROM Orders
You can use the dataset to populate report objects. Follow the steps below to create a chart.
- In the Palette view, drag a chart onto the canvas.
- In the Select Chart Type tab, select a bar chart.
- In the Select Data tab, click the Use Data From option and select the BigQuery data set from the menu.
- Drag OrderName from the table to the series for the x-axis.
- Drag Freight from the table to the series for the y-axis.
Host BigQuery Reports on SpagoBI Server
Follow the steps below to host documents based on live BigQuery data on SpagoBI Server. You will use the report you created in the previous section as a template. To enable report users to access the live data, create placeholder parameters to be replaced by the BigQuery JDBC data source on the server:
- If you have not already done so, open the Report Design perspective in SpagoBI Studio.
- In the Data Explorer view, right-click the Report Parameters folder and click New Parameter. Add the url parameter and assign an empty value to it. This parameter is a placeholder for the JDBC data source on the SpagoBI Server.
- Right-click the BigQuery data source and click Edit.
-
In the Property Binding node, set the JDBC Driver URL binding property to the url parameter: Click the box for the property. In the Category section, select Report Parameters. Select All in the Subcategory section and double-click the parameter.
You can also enter the following in the JavaScript syntax:
params["url"].value
Next, create a new document for the report on SpagoBI Server.
- In SpagoBI Server, click Documents Development -> Create Document -> Generic Document. The Document Details page is displayed.
- To create the document, enter the following:
- Label: Enter a unique identifier for the document.
- Name: Enter a user-friendly name for the document.
- Type: Select Report from the menu.
- Engine: Select BIRT Report Engine.
- Data Source: Select the BigQuery Data Source you created in Create a JDBC Data Source for BigQuery in SpagoBI Server.
- In the Show Document Templates section, select the folder where you want the document to be stored.
In the Template section, click Choose File. Navigate to the folder containing your report project. Select the .rptdesign file.
Note: You can find the path to the project in the project properties.
- Click the Save button.
When you run the report on the server, the placeholder url parameter is replaced with the JDBC URL defined on the server.