01: /**
02: * ========================================
03: * JFreeReport : a free Java report library
04: * ========================================
05: *
06: * Project Info: http://reporting.pentaho.org/
07: *
08: * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
09: *
10: * This library is free software; you can redistribute it and/or modify it under the terms
11: * of the GNU Lesser General Public License as published by the Free Software Foundation;
12: * either version 2.1 of the License, or (at your option) any later version.
13: *
14: * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
15: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16: * See the GNU Lesser General Public License for more details.
17: *
18: * You should have received a copy of the GNU Lesser General Public License along with this
19: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20: * Boston, MA 02111-1307, USA.
21: *
22: * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
23: * in the United States and other countries.]
24: *
25: * ------------
26: * $Id: EmptyReportData.java 3048 2007-07-28 18:02:42Z tmorgner $
27: * ------------
28: * (C) Copyright 2000-2005, by Object Refinery Limited.
29: * (C) Copyright 2005-2007, by Pentaho Corporation.
30: */package org.jfree.report;
31:
32: /**
33: * Creation-Date: 22.04.2006, 14:25:04
34: *
35: * @author Thomas Morgner
36: */
37: public class EmptyReportData implements ReportData {
38: public EmptyReportData() {
39: }
40:
41: public int getCursorPosition() throws DataSourceException {
42: return 0;
43: }
44:
45: public boolean isReadable() throws DataSourceException {
46: return false;
47: }
48:
49: public boolean setCursorPosition(final int cursor)
50: throws DataSourceException {
51: if (cursor == ReportData.BEFORE_FIRST_ROW) {
52: return true;
53: }
54: return false;
55: }
56:
57: /**
58: * This operation checks, whether a call to next will be likely to succeed. If there is a next data row, this should
59: * return true.
60: *
61: * @return
62: * @throws DataSourceException
63: *
64: */
65: public boolean isAdvanceable() throws DataSourceException {
66: return false;
67: }
68:
69: public boolean next() throws DataSourceException {
70: return false;
71: }
72:
73: public void close() throws DataSourceException {
74:
75: }
76:
77: public int getColumnCount() throws DataSourceException {
78: return 0;
79: }
80:
81: public String getColumnName(final int column)
82: throws DataSourceException {
83: return null;
84: }
85:
86: public Object get(final int column) throws DataSourceException {
87: return null;
88: }
89: }
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