/* * Copyright (c) 2003, 2004, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javax.sql.rowset.serial; import java.sql.*;import java.io.*;import java.net.URL;  /** * A serialized mapping in the Java programming language of an SQL * <code>DATALINK</code> value. A <code>DATALINK</code> value * references a file outside of the underlying data source that the * data source manages. * <P> * <code>RowSet</code> implementations can use the method <code>RowSet.getURL</code> * to retrieve a <code>java.net.URL</code> object, which can be used * to manipulate the external data. * <pre> *      java.net.URL url = rowset.getURL(1); * </pre> */public class SerialDatalink implements Serializable, Cloneable {     /**     * The extracted URL field retrieved from the DATALINK field.     * @serial     */    private URL url;     /**     * The SQL type of the elements in this <code>SerialDatalink</code>     * object.  The type is expressed as one of the contants from the     * class <code>java.sql.Types</code>.     * @serial     */    private int baseType;     /**     * The type name used by the DBMS for the elements in the SQL     * <code>DATALINK</code> value that this SerialDatalink object     * represents.     * @serial     */    private String baseTypeName;     /**      * Constructs a new <code>SerialDatalink</code> object from the given      * <code>java.net.URL</code> object.      * <P>      * @throws SerialException if url parameter is a null      */    public SerialDatalink(URL url) throws SerialException {        if (url == null) {            throw new SerialException("Cannot serialize empty URL instance");        }        this.url = url;    }     /**     * Returns a new URL that is a copy of this <code>SerialDatalink</code>     * object.     *     * @return a copy of this <code>SerialDatalink</code> object as a     * <code>URL</code> object in the Java programming language.     * @throws SerialException if the <code>URL</code> object cannot be de-serialized     */    public URL getDatalink() throws SerialException {         URL aURL = null;         try {            aURL = new URL((this.url).toString());        } catch (java.net.MalformedURLException e) {            throw new SerialException("MalformedURLException: " + e.getMessage());        }        return aURL;    }      /**         * The identifier that assists in the serialization of this <code>SerialDatalink</code>     * object.     */    static final long serialVersionUID = 2826907821828733626L;}