001 /**
002 * ========================================
003 * JFreeReport : a free Java report library
004 * ========================================
005 *
006 * Project Info: http://reporting.pentaho.org/
007 *
008 * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
009 *
010 * This library is free software; you can redistribute it and/or modify it under the terms
011 * of the GNU Lesser General Public License as published by the Free Software Foundation;
012 * either version 2.1 of the License, or (at your option) any later version.
013 *
014 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
015 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
016 * See the GNU Lesser General Public License for more details.
017 *
018 * You should have received a copy of the GNU Lesser General Public License along with this
019 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
020 * Boston, MA 02111-1307, USA.
021 *
022 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
023 * in the United States and other countries.]
024 *
025 * ------------
026 * $Id: TableReportDataFactory.java,v 1.5 2007/04/01 18:49:23 taqua Exp $
027 * ------------
028 * (C) Copyright 2000-2005, by Object Refinery Limited.
029 * (C) Copyright 2005-2007, by Pentaho Corporation.
030 */
031 package org.jfree.report;
032
033 import java.util.HashMap;
034 import javax.swing.table.TableModel;
035
036 /**
037 * Creation-Date: 21.02.2006, 17:59:32
038 *
039 * @author Thomas Morgner
040 */
041 public class TableReportDataFactory implements ReportDataFactory, Cloneable
042 {
043 private HashMap tables;
044
045 public TableReportDataFactory()
046 {
047 this.tables = new HashMap();
048 }
049
050 public TableReportDataFactory(String name, TableModel tableModel)
051 {
052 this();
053 addTable(name, tableModel);
054 }
055
056 public void addTable(String name, TableModel tableModel)
057 {
058 tables.put(name, tableModel);
059 }
060
061 public void removeTable(String name)
062 {
063 tables.remove(name);
064 }
065
066 /**
067 * Queries a datasource. The string 'query' defines the name of the query. The
068 * Parameterset given here may contain more data than actually needed.
069 * <p/>
070 * The dataset may change between two calls, do not assume anything!
071 *
072 * @param query the name of the table.
073 * @param parameters are ignored for this factory.
074 * @return the report data or null.
075 */
076 public ReportData queryData(final String query, final DataSet parameters)
077 throws ReportDataFactoryException
078 {
079 TableModel model = (TableModel) tables.get(query);
080 if (model == null)
081 {
082 return null;
083 }
084
085 return new TableReportData(model);
086 }
087
088 public void open()
089 {
090
091 }
092
093 public void close()
094 {
095
096 }
097
098 /**
099 * Derives a freshly initialized report data factory, which is independend of
100 * the original data factory. Opening or Closing one data factory must not
101 * affect the other factories.
102 *
103 * @return
104 */
105 public ReportDataFactory derive()
106 {
107 try
108 {
109 return (ReportDataFactory) clone();
110 }
111 catch (CloneNotSupportedException e)
112 {
113 throw new IllegalStateException("Clone should not fail.");
114 }
115 }
116
117 public Object clone () throws CloneNotSupportedException
118 {
119 TableReportDataFactory dataFactory = (TableReportDataFactory) super.clone();
120 dataFactory.tables = (HashMap) tables.clone();
121 return dataFactory;
122 }
123 }