/*******************************************************************************
* Copyright (c) 1998, 2015 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 v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* 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
*/
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
*/
public boolean acceptsURL(String url) {
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
*/
public DriverPropertyInfo[] getPropertyInfo(String url, java.util.Properties info) {
return null;
}
/**
* Retrieves the driver's major version number. Initially this should be 1.
*
* @return this driver's major version number
*/
public int getMajorVersion() {
return 1;
}
/**
* Gets the driver's minor version number. Initially this should be 0.
* @return this driver's minor version number
*/
public int getMinorVersion() {
return 0;
}
/**
* Reports whether this driver is a genuine JDBC
* Compliant<sup><font size=-2>TM</font></sup> 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
*/
public boolean jdbcCompliant() {
return true;
}
public Logger getParentLogger(){return null;}
}