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 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package org.apache.tomcat.dbcp.dbcp2;

import java.sql.Driver;
import java.sql.SQLException;
import java.util.Properties;

 * Creates {@link ConnectionFactory} instances.
 * @since 2.7.0
final class ConnectionFactoryFactory {

     * Creates a new {@link DriverConnectionFactory} allowing for an override through
     * {@link BasicDataSource#getDriverClassName()}.
     * @param basicDataSource Configures creation.
     * @param driver          The JDBC driver.
     * @return a new {@link DriverConnectionFactory} allowing for a {@link BasicDataSource#getDriverClassName()}
     *         override.
     * @throws SQLException Thrown when instantiation fails.
    static ConnectionFactory createConnectionFactory(final BasicDataSource basicDataSource, final Driver driver)
            throws SQLException {
        final Properties connectionProperties = basicDataSource.getConnectionProperties();
        final String url = basicDataSource.getUrl();
        // Set up the driver connection factory we will use
        final String user = basicDataSource.getUsername();
        if (user != null) {
            connectionProperties.put(Constants.KEY_USER, user);
        } else {
            basicDataSource.log(String.format("DBCP DataSource configured without a '%s'", Constants.KEY_USER));

        final String pwd = basicDataSource.getPassword();
        if (pwd != null) {
            connectionProperties.put(Constants.KEY_PASSWORD, pwd);
        } else {
            basicDataSource.log(String.format("DBCP DataSource configured without a '%s'", Constants.KEY_PASSWORD));
        final String connectionFactoryClassName = basicDataSource.getConnectionFactoryClassName();
        if (connectionFactoryClassName != null) {
            try {
                final Class<?> connectionFactoryFromCCL = Class.forName(connectionFactoryClassName);
                return (ConnectionFactory) connectionFactoryFromCCL
                        .getConstructor(Driver.class, String.class, Properties.class)
                        .newInstance(driver, url, connectionProperties);
            } catch (final Exception t) {
                final String message = "Cannot load ConnectionFactory implementation '" + connectionFactoryClassName
                        + "'";
                basicDataSource.log(message, t);
                throw new SQLException(message, t);
        // Defaults to DriverConnectionFactory
        return new DriverConnectionFactory(driver, url, connectionProperties);