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Create a Data Access Object for Microsoft CDS Data using JDBI

A brief overview of creating a SQL Object API for Microsoft CDS data in JDBI.

JDBI is a SQL convenience library for Java that exposes two different style APIs, a fluent style and a SQL object style. The CData JDBC Driver for Microsoft CDS integrates connectivity to live Microsoft CDS data in Java applications. By pairing these technologies, you gain simple, programmatic access to Microsoft CDS data. This article walks through building a basic Data Access Object (DAO) and the accompanying code to read and write Microsoft CDS data.

Create a DAO for the Microsoft CDS Accounts Entity

The interface below declares the desired behavior for the SQL object to create a single method for each SQL statement to be implemented.

public interface MyAccountsDAO { //insert new data into Microsoft CDS @SqlUpdate("INSERT INTO Accounts (Name, Name) values (:name, :name)") void insert(@Bind("name") String name, @Bind("name") String name); //request specific data from Microsoft CDS (String type is used for simplicity) @SqlQuery("SELECT Name FROM Accounts WHERE Name = :name") String findNameByName(@Bind("name") String name); /* * close with no args is used to close the connection */ void close(); }

Open a Connection to Microsoft CDS

Collect the necessary connection properties and construct the appropriate JDBC URL for connecting to Microsoft CDS.

You can connect without setting any connection properties for your user credentials. Below are the minimum connection properties required to connect.

  • InitiateOAuth: Set this to GETANDREFRESH. You can use InitiateOAuth to avoid repeating the OAuth exchange and manually setting the OAuthAccessToken.
  • OrganizationUrl: Set this to the organization URL you are connecting to, such as
  • Tenant (optional): Set this if you wish to authenticate to a different tenant than your default. This is required to work with an organization not on your default Tenant.

When you connect the Common Data Service OAuth endpoint opens in your default browser. Log in and grant permissions. The OAuth process completes automatically.

Built-in Connection String Designer

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

java -jar cdata.jdbc.cds.jar

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

A connection string for Microsoft CDS will typically look like the following:


Use the configured JDBC URL to obtain an instance of the DAO interface. The particular method shown below will open a handle bound to the instance, so the instance needs to be closed explicitly to release the handle and the bound JDBC connection.

DBI dbi = new DBI("jdbc:cds:OrganizationUrl="); MyAccountsDAO dao =; //do stuff with the DAO dao.close();

Read Microsoft CDS Data

With the connection open to Microsoft CDS, simply call the previously defined method to retrieve data from the Accounts entity in Microsoft CDS.

//disply the result of our 'find' method String name = dao.findNameByName("MyAccount"); System.out.println(name);

Write Microsoft CDS Data

It is also simple to write data to Microsoft CDS, using the previously defined method.

//add a new entry to the Accounts entity dao.insert(newName, newName);

Since the JDBI library is able to work with JDBC connections, you can easily produce a SQL Object API for Microsoft CDS by integrating with the CData JDBC Driver for Microsoft CDS. Download a free trial and work with live Microsoft CDS data in custom Java applications today.