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JDBC Type 4 driver for MySQL.
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/*
 * Copyright (c) 2002, 2024, Oracle and/or its affiliates.
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License, version 2.0, as published by
 * the Free Software Foundation.
 *
 * This program is designed to work with certain software that is licensed under separate terms, as designated in a particular file or component or in
 * included license documentation. The authors of MySQL hereby grant you an additional permission to link the program and your derivative works with the
 * separately licensed software that they have either included with the program or referenced in the documentation.
 *
 * Without limiting anything contained in the foregoing, this file, which is part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
 * version 1.0, a copy of which can be found at http://oss.oracle.com/licenses/universal-foss-exception.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0, for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

package com.mysql.cj.jdbc;

import java.util.Hashtable;

import javax.naming.Context;
import javax.naming.Name;
import javax.naming.RefAddr;
import javax.naming.Reference;
import javax.naming.spi.ObjectFactory;

import com.mysql.cj.conf.PropertyKey;
import com.mysql.cj.util.Util;

/**
 * Factory class for MysqlDataSource objects
 */
public class MysqlDataSourceFactory implements ObjectFactory {

    /**
     * The class name for a standard MySQL DataSource.
     */
    protected final static String DATA_SOURCE_CLASS_NAME = MysqlDataSource.class.getName();

    /**
     * The class name for a poolable MySQL DataSource.
     */
    protected final static String POOL_DATA_SOURCE_CLASS_NAME = MysqlConnectionPoolDataSource.class.getName();

    /**
     * The class name for a MysqlXADataSource
     */
    protected final static String XA_DATA_SOURCE_CLASS_NAME = MysqlXADataSource.class.getName();

    @Override
    public Object getObjectInstance(Object refObj, Name nm, Context ctx, Hashtable env) throws Exception {
        Reference ref = (Reference) refObj;
        String className = ref.getClassName();

        if (className != null
                && (className.equals(DATA_SOURCE_CLASS_NAME) || className.equals(POOL_DATA_SOURCE_CLASS_NAME) || className.equals(XA_DATA_SOURCE_CLASS_NAME))) {
            MysqlDataSource dataSource = Util.getInstance(MysqlDataSource.class, className, null, null, null);

            int portNumber = 3306;
            String portNumberAsString = nullSafeRefAddrStringGet("port", ref);
            if (portNumberAsString != null) {
                portNumber = Integer.parseInt(portNumberAsString);
            }
            dataSource.setPort(portNumber);

            String user = nullSafeRefAddrStringGet(PropertyKey.USER.getKeyName(), ref);
            if (user != null) {
                dataSource.setUser(user);
            }

            String password = nullSafeRefAddrStringGet(PropertyKey.PASSWORD.getKeyName(), ref);
            if (password != null) {
                dataSource.setPassword(password);
            }

            String serverName = nullSafeRefAddrStringGet("serverName", ref);
            if (serverName != null) {
                dataSource.setServerName(serverName);
            }

            String databaseName = nullSafeRefAddrStringGet("databaseName", ref);
            if (databaseName != null) {
                dataSource.setDatabaseName(databaseName);
            }

            String explicitUrlAsString = nullSafeRefAddrStringGet("explicitUrl", ref);
            if (explicitUrlAsString != null) {
                if (Boolean.parseBoolean(explicitUrlAsString)) {
                    dataSource.setUrl(nullSafeRefAddrStringGet("url", ref));
                }
            }

            dataSource.setPropertiesViaRef(ref);
            return dataSource;
        }

        // Cannot create an instance of the reference.
        return null;
    }

    private String nullSafeRefAddrStringGet(String referenceName, Reference ref) {
        RefAddr refAddr = ref.get(referenceName);
        String asString = refAddr != null ? (String) refAddr.getContent() : null;
        return asString;
    }

}