Merge DriverClassNameProvider in DatabaseDriver

DriverClassNameProvider is unused but was probably restored by a merge
commit at some point. It wasn't obvious and updated that class rather
than `DatabaseDriver`.

This commit updates `DatabaseDriver` and deletes
`DriverClassNameProvider`.

Closes gh-5076

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

@@ -90,6 +90,12 @@ enum DatabaseDriver {
 	SQLSERVER("com.microsoft.sqlserver.jdbc.SQLServerDriver",
 			"com.microsoft.sqlserver.jdbc.SQLServerXADataSource"),
 
+	/**
+	 * Firebird.
+	 */
+	FIREBIRD("org.firebirdsql.jdbc.FBDriver",
+			"org.firebirdsql.pool.FBConnectionPoolDataSource"),
+
 	/**
 	 * DB2 Server.
 	 */
@@ -99,7 +105,12 @@ enum DatabaseDriver {
 	 * DB2 AS400 Server.
 	 */
 	AS400("com.ibm.as400.access.AS400JDBCDriver",
-			"com.ibm.as400.access.AS400JDBCXADataSource");
+			"com.ibm.as400.access.AS400JDBCXADataSource"),
+
+	/**
+	 * Teradata.
+	 */
+	TERADATA("com.teradata.jdbc.TeraDriver");
 
 	private final String driverClassName;
 

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

@@ -1,74 +0,0 @@
-/*
- * 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.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.springframework.boot.autoconfigure.jdbc;
-
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.Map;
-
-import org.springframework.util.Assert;
-
-/**
- * Provides JDBC driver class name for given JDBC URL.
- *
- * @author Maciej Walkowiak
- * @since 1.1.0
- */
-class DriverClassNameProvider {
-
-	private static final String JDBC_URL_PREFIX = "jdbc";
-
-	private static final Map<String, String> DRIVERS;
-
-	static {
-		Map<String, String> drivers = new HashMap<String, String>();
-		drivers.put("derby", "org.apache.derby.jdbc.EmbeddedDriver");
-		drivers.put("h2", "org.h2.Driver");
-		drivers.put("hsqldb", "org.hsqldb.jdbc.JDBCDriver");
-		drivers.put("sqlite", "org.sqlite.JDBC");
-		drivers.put("mysql", "com.mysql.jdbc.Driver");
-		drivers.put("mariadb", "org.mariadb.jdbc.Driver");
-		drivers.put("google", "com.google.appengine.api.rdbms.AppEngineDriver");
-		drivers.put("oracle", "oracle.jdbc.OracleDriver");
-		drivers.put("postgresql", "org.postgresql.Driver");
-		drivers.put("jtds", "net.sourceforge.jtds.jdbc.Driver");
-		drivers.put("sqlserver", "com.microsoft.sqlserver.jdbc.SQLServerDriver");
-		drivers.put("firebirdsql", "org.firebirdsql.jdbc.FBDriver");
-		drivers.put("db2", "com.ibm.db2.jcc.DB2Driver");
-		drivers.put("teradata", "com.teradata.jdbc.TeraDriver");
-		DRIVERS = Collections.unmodifiableMap(drivers);
-	}
-
-	/**
-	 * Find a JDBC driver class name based on given JDBC URL.
-	 * @param jdbcUrl JDBC URL
-	 * @return driver class name or null if not found
-	 */
-	String getDriverClassName(final String jdbcUrl) {
-		Assert.notNull(jdbcUrl, "JdbcUrl must not be null");
-		Assert.isTrue(jdbcUrl.startsWith(JDBC_URL_PREFIX),
-				"JdbcUrl must start with '" + JDBC_URL_PREFIX + "'");
-		String urlWithoutPrefix = jdbcUrl.substring(JDBC_URL_PREFIX.length());
-		for (Map.Entry<String, String> driver : DRIVERS.entrySet()) {
-			if (urlWithoutPrefix.startsWith(":" + driver.getKey() + ":")) {
-				return driver.getValue();
-			}
-		}
-		return null;
-	}
-
-}