/*
 * Copyright (c) 1998, 2020 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0,
 * or the Eclipse Distribution License v. 1.0 which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
 */

// Contributors:
//     Oracle - initial API and implementation from Oracle TopLink
package org.eclipse.persistence.testing.framework;

import org.eclipse.persistence.internal.security.PrivilegedClassForName;
import org.eclipse.persistence.internal.security.PrivilegedNewInstanceFromClass;
import org.eclipse.persistence.platform.database.OraclePlatform;

/**
 * Used to separate Oracle-Specific tests from the main test framework.  Returns OraclePlatform from all its
 * methods.  Subclasses can override.
 *
 * @author tware
 *
 */
public class OracleDBPlatformHelper {

    private static OracleDBPlatformHelper singleton;

    public static OracleDBPlatformHelper getInstance() {

        if (singleton == null) {
            Class helperClass = null;

            try {
                helperClass = new PrivilegedClassForName("org.eclipse.persistence.testing.framework.oracle.OracleDBPlatformHelper").run();
            } catch (ClassNotFoundException cnfe) {
                helperClass = OracleDBPlatformHelper.class;
            }
            try {
                singleton = (OracleDBPlatformHelper) new PrivilegedNewInstanceFromClass(helperClass).run();
            } catch (IllegalAccessException e) {
                // TODO Auto-generated catch block
                throw new RuntimeException("Helper create failed: " + helperClass);
            } catch (InstantiationException e) {
                // TODO Auto-generated catch block
                throw new RuntimeException("Helper create failed: " + helperClass);
            }
        }
        return singleton;
    }

    public OraclePlatform getOracle8Platform(){
        return new OraclePlatform();
    }

    public OraclePlatform getOracle9Platform(){
        return new OraclePlatform();
    }
}