Merge pull request #4119 from mdeinum/gh-4114

* pr/4119:
  Polish
  Add support for the DB2 Universal JDBC driver

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/jdbc/DatabaseDriver.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2014 the original author or authors.
+ * Copyright 2012-2015 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -24,6 +24,7 @@ import org.springframework.util.StringUtils;
  *
  * @author Phillip Webb
  * @author Maciej Walkowiak
+ * @author Marten Deinum
  * @since 1.2.0
  */
 enum DatabaseDriver {
@@ -87,7 +88,12 @@ enum DatabaseDriver {
 	 * SQL Server.
 	 */
 	SQLSERVER("com.microsoft.sqlserver.jdbc.SQLServerDriver",
-			"com.microsoft.sqlserver.jdbc.SQLServerXADataSource");
+			"com.microsoft.sqlserver.jdbc.SQLServerXADataSource"),
+
+	/**
+	 * DB2 Server.
+	 */
+	DB2("com.ibm.db2.jcc.DB2Driver", "com.ibm.db2.jcc.DB2XADataSource");
 
 	private final String driverClassName;