J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003-2004 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package javax.sql.rowset.serial; |
| 27 | |
| 28 | import java.sql.*; |
| 29 | import java.io.*; |
| 30 | import java.net.URL; |
| 31 | |
| 32 | |
| 33 | /** |
| 34 | * A serialized mapping in the Java programming language of an SQL |
| 35 | * <code>DATALINK</code> value. A <code>DATALINK</code> value |
| 36 | * references a file outside of the underlying data source that the |
| 37 | * data source manages. |
| 38 | * <P> |
| 39 | * <code>RowSet</code> implementations can use the method <code>RowSet.getURL</code> |
| 40 | * to retrieve a <code>java.net.URL</code> object, which can be used |
| 41 | * to manipulate the external data. |
| 42 | * <pre> |
| 43 | * java.net.URL url = rowset.getURL(1); |
| 44 | * </pre> |
| 45 | */ |
| 46 | public class SerialDatalink implements Serializable, Cloneable { |
| 47 | |
| 48 | /** |
| 49 | * The extracted URL field retrieved from the DATALINK field. |
| 50 | * @serial |
| 51 | */ |
| 52 | private URL url; |
| 53 | |
| 54 | /** |
| 55 | * The SQL type of the elements in this <code>SerialDatalink</code> |
| 56 | * object. The type is expressed as one of the contants from the |
| 57 | * class <code>java.sql.Types</code>. |
| 58 | * @serial |
| 59 | */ |
| 60 | private int baseType; |
| 61 | |
| 62 | /** |
| 63 | * The type name used by the DBMS for the elements in the SQL |
| 64 | * <code>DATALINK</code> value that this SerialDatalink object |
| 65 | * represents. |
| 66 | * @serial |
| 67 | */ |
| 68 | private String baseTypeName; |
| 69 | |
| 70 | /** |
| 71 | * Constructs a new <code>SerialDatalink</code> object from the given |
| 72 | * <code>java.net.URL</code> object. |
| 73 | * <P> |
| 74 | * @throws SerialException if url parameter is a null |
| 75 | */ |
| 76 | public SerialDatalink(URL url) throws SerialException { |
| 77 | if (url == null) { |
| 78 | throw new SerialException("Cannot serialize empty URL instance"); |
| 79 | } |
| 80 | this.url = url; |
| 81 | } |
| 82 | |
| 83 | /** |
| 84 | * Returns a new URL that is a copy of this <code>SerialDatalink</code> |
| 85 | * object. |
| 86 | * |
| 87 | * @return a copy of this <code>SerialDatalink</code> object as a |
| 88 | * <code>URL</code> object in the Java programming language. |
| 89 | * @throws SerialException if the <code>URL</code> object cannot be de-serialized |
| 90 | */ |
| 91 | public URL getDatalink() throws SerialException { |
| 92 | |
| 93 | URL aURL = null; |
| 94 | |
| 95 | try { |
| 96 | aURL = new URL((this.url).toString()); |
| 97 | } catch (java.net.MalformedURLException e) { |
| 98 | throw new SerialException("MalformedURLException: " + e.getMessage()); |
| 99 | } |
| 100 | return aURL; |
| 101 | } |
| 102 | |
| 103 | |
| 104 | /** |
| 105 | * The identifier that assists in the serialization of this <code>SerialDatalink</code> |
| 106 | * object. |
| 107 | */ |
| 108 | static final long serialVersionUID = 2826907821828733626L; |
| 109 | } |