| /* |
| * 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.tests.performance.emulateddb; |
| |
| import java.sql.*; |
| import java.util.logging.Logger; |
| /** |
| * Emulated database driver. |
| */ |
| public class EmulatedDriver implements Driver { |
| static { |
| try { |
| DriverManager.registerDriver(new EmulatedDriver()); |
| } catch (Exception ignore) {} |
| } |
| |
| /** Allow toggling of emulation. */ |
| public static boolean emulate = true; |
| |
| /** Cache the connection. */ |
| protected Connection connection; |
| |
| /** |
| * Attempts to make a database connection to the given URL. |
| * The driver should return "null" if it realizes it is the wrong kind |
| * of driver to connect to the given URL. This will be common, as when |
| * the JDBC driver manager is asked to connect to a given URL it passes |
| * the URL to each loaded driver in turn. |
| * |
| * <P>The driver should throw an <code>SQLException</code> if it is the right |
| * driver to connect to the given URL but has trouble connecting to |
| * the database. |
| * |
| * <P>The <code>java.util.Properties</code> argument can be used to pass |
| * arbitrary string tag/value pairs as connection arguments. |
| * Normally at least "user" and "password" properties should be |
| * included in the <code>Properties</code> object. |
| * |
| * @param url the URL of the database to which to connect |
| * @param info a list of arbitrary string tag/value pairs as |
| * connection arguments. Normally at least a "user" and |
| * "password" property should be included. |
| * @return a <code>Connection</code> object that represents a |
| * connection to the URL |
| * @exception SQLException if a database access error occurs |
| */ |
| @Override |
| public Connection connect(String url, java.util.Properties info) throws SQLException { |
| if (! acceptsURL(url)) { |
| return null; |
| } |
| if (connection == null) { |
| connection = new EmulatedConnection(DriverManager.getConnection(url.substring("emulate:".length(), url.length()), info)); |
| } |
| return connection; |
| } |
| |
| /** |
| * Retrieves whether the driver thinks that it can open a connection |
| * to the given URL. Typically drivers will return <code>true</code> if they |
| * understand the subprotocol specified in the URL and <code>false</code> if |
| * they do not. |
| * |
| * @param url the URL of the database |
| * @return <code>true</code> if this driver understands the given URL; |
| * <code>false</code> otherwise |
| * @exception SQLException if a database access error occurs |
| */ |
| @Override |
| public boolean acceptsURL(String url) throws SQLException { |
| return url.indexOf("emulate:") != -1; |
| } |
| |
| /** |
| * Gets information about the possible properties for this driver. |
| * <P> |
| * The <code>getPropertyInfo</code> method is intended to allow a generic |
| * GUI tool to discover what properties it should prompt |
| * a human for in order to get |
| * enough information to connect to a database. Note that depending on |
| * the values the human has supplied so far, additional values may become |
| * necessary, so it may be necessary to iterate though several calls |
| * to the <code>getPropertyInfo</code> method. |
| * |
| * @param url the URL of the database to which to connect |
| * @param info a proposed list of tag/value pairs that will be sent on |
| * connect open |
| * @return an array of <code>DriverPropertyInfo</code> objects describing |
| * possible properties. This array may be an empty array if |
| * no properties are required. |
| * @exception SQLException if a database access error occurs |
| */ |
| @Override |
| public DriverPropertyInfo[] getPropertyInfo(String url, java.util.Properties info) throws SQLException { |
| return null; |
| } |
| |
| /** |
| * Retrieves the driver's major version number. Initially this should be 1. |
| * |
| * @return this driver's major version number |
| */ |
| @Override |
| public int getMajorVersion() { |
| return 1; |
| } |
| |
| /** |
| * Gets the driver's minor version number. Initially this should be 0. |
| * @return this driver's minor version number |
| */ |
| @Override |
| public int getMinorVersion() { |
| return 0; |
| } |
| |
| /** |
| * Reports whether this driver is a genuine JDBC |
| * Compliant (TM) driver. |
| * A driver may only report <code>true</code> here if it passes the JDBC |
| * compliance tests; otherwise it is required to return <code>false</code>. |
| * <P> |
| * JDBC compliance requires full support for the JDBC API and full support |
| * for SQL 92 Entry Level. It is expected that JDBC compliant drivers will |
| * be available for all the major commercial databases. |
| * <P> |
| * This method is not intended to encourage the development of non-JDBC |
| * compliant drivers, but is a recognition of the fact that some vendors |
| * are interested in using the JDBC API and framework for lightweight |
| * databases that do not support full database functionality, or for |
| * special databases such as document information retrieval where a SQL |
| * implementation may not be feasible. |
| * @return <code>true</code> if this driver is JDBC Compliant; <code>false</code> |
| * otherwise |
| */ |
| @Override |
| public boolean jdbcCompliant() { |
| return true; |
| } |
| |
| @Override |
| public Logger getParentLogger(){return null;} |
| } |
