Initial Checkin

1 files changed, 131 insertions, 0 deletions

diff --git a/java/sql/Driver.java b/java/sql/Driver.java
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+++ b/java/sql/Driver.java
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+/*************************************************************************
+/* Driver.java -- A JDBC driver
+/*
+/* Copyright (c) 1999 Free Software Foundation, Inc.
+/* Written by Aaron M. Renn (arenn@urbanophile.com)
+/*
+/* This library is free software; you can redistribute it and/or modify
+/* it under the terms of the GNU Library General Public License as published 
+/* by the Free Software Foundation, either version 2 of the License, or
+/* (at your option) any later verion.
+/*
+/* This library 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 Library General Public License for more details.
+/*
+/* You should have received a copy of the GNU Library General Public License
+/* along with this library; if not, write to the Free Software Foundation
+/* Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307 USA
+/*************************************************************************/
+
+package java.sql;
+
+import java.util.Properties;
+
+/**
+  * This interface specifies a mechanism for accessing a JDBC database
+  * driver.  When the class implementing this method is loaded, it should
+  * register an instance of itself with the <code>DriverManager</code> in
+  * a static initializer.  
+  * <p>
+  * Because the <code>DriverManager</code> might attempt to use several
+  * drivers to find one that can connect to the requested database, 
+  * this driver should not cause large numbers of classes and code to
+  * be loaded.  If another driver is the one that ends up performing the
+  * request, any loading done by this driver would be wasted.
+  *
+  * @author Aaron M. Renn (arenn@urbanophile.com)
+  */
+public abstract interface Driver
+{
+
+/**
+  * This method returns the major version number of the driver.
+  *
+  * @return The major version number of the driver.
+  */
+public abstract int
+getMajorVersionNumber();
+
+/*************************************************************************/
+
+/**
+  * This method returns the minor version number of the driver.
+  *
+  * @return The minor version number of the driver.
+  */
+public abstract int
+getMinorVersion();
+
+/*************************************************************************/
+
+/**
+  * This method tests whether or not the driver is JDBC compliant.  This
+  * method should only return <code>true</code> if the driver has been
+  * certified as JDBC compliant.
+  *
+  * @return <code>true</code> if the driver has been certified JDBC compliant,
+  * <code>false</code> otherwise.
+  */
+public abstract boolean
+jdbcCompliant();
+
+/*************************************************************************/
+
+/**
+  * This method returns an array of possible properties that could be
+  * used to connect to the specified database.
+  *
+  * @param url The URL string of the database to connect to.
+  * @param properties The list of properties the caller is planning to use
+  * to connect to the database.
+  *
+  * @return A list of possible additional properties for a connection to this
+  * database.  This list may be empty.
+  *
+  * @exception SQLException If an error occurs.
+  */
+public abstract DriverPropertyInfo[]
+getPropertyInfo(String url, Properties properties) throws SQLException;
+
+/*************************************************************************/
+
+/**
+  * This method tests whether or not the driver believes it can connect to
+  * the specified database.  The driver should only test whether it 
+  * understands and accepts the URL. It should not necessarily attempt to 
+  * probe the database for a connection.
+  *
+  * @param The database URL string.
+  *
+  * @return <code>true</code> if the drivers can connect to the database, 
+  * <code>false</code> otherwise.
+  *
+  * @exception SQLException If an error occurs.
+  */
+public abstract boolean
+acceptsURL(String url) throws SQLException;
+
+/*************************************************************************/
+
+/**
+  * This method connects to the specified database using the connection
+  * properties supplied.  If the driver does not understand the database
+  * URL, it should return <code>null</code> instead of throwing an
+  * exception since the <code>DriverManager</code> will probe a driver
+  * in this manner.
+  * 
+  * @param url The URL string for this connection.
+  * @param properties The list of database connection properties.
+  *
+  * @return A <code>Connection</code> object for the newly established
+  * connection, or <code>null</code> if the URL is not understood.
+  *
+  * @exception SQLException If an error occurs.
+  */
+public abstract Connection
+connect(String url, Properties properties) throws SQLException;
+
+} // interface Driver
+