Create a Data Access Object for Oracle HCM Cloud Data using 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 Oracle HCM Cloud integrates connectivity to live Oracle HCM Cloud data in Java applications. By pairing these technologies, you gain simple, programmatic access to Oracle HCM Cloud data. This article explains how to build a basic Data Access Object (DAO) and the accompanying code to read Oracle HCM Cloud data.

Create a DAO for the Oracle HCM Cloud RecruitingCESites 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 MyRecruitingCESitesDAO {
 //request specific data from Oracle HCM Cloud (String type is used for simplicity)
 @SqlQuery("SELECT SiteName FROM RecruitingCESites WHERE Language = :language")
 String findSiteNameByLanguage(@Bind("language") String language);

 /*
 * close with no args is used to close the connection
 */
 void close();
}

Open a Connection to Oracle HCM Cloud

Collect the necessary connection properties and construct the appropriate JDBC URL for connecting to Oracle HCM Cloud.

Using Basic Authentication

You must set the following to authenticate to Oracle HCM Cloud:

• Url: The Url of your account.
• User: The user of your account.
• Password: The password of your account.

Built-in Connection String Designer

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

java -jar cdata.jdbc.oraclehcm.jar

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

A connection string for Oracle HCM Cloud will typically look like the following:

jdbc:oraclehcm:Url=https://abc.oraclecloud.com;User=user;Password=password;

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:oraclehcm:Url=https://abc.oraclecloud.com;User=user;Password=password;");
MyRecruitingCESitesDAO dao = dbi.open(MyRecruitingCESitesDAO.class);

//do stuff with the DAO

dao.close();

Read Oracle HCM Cloud Data

With the connection open to Oracle HCM Cloud, simply call the previously defined method to retrieve data from the RecruitingCESites entity in Oracle HCM Cloud.

//disply the result of our 'find' method
String siteName = dao.findSiteNameByLanguage("English");
System.out.println(siteName);

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