Source for org.jfree.report.TableReportDataFactory

   1: /**
   2:  * ========================================
   3:  * JFreeReport : a free Java report library
   4:  * ========================================
   5:  *
   6:  * Project Info:  http://reporting.pentaho.org/
   7:  *
   8:  * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
   9:  *
  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: TableReportDataFactory.java 3525 2007-10-16 11:43:48Z tmorgner $
  27:  * ------------
  28:  * (C) Copyright 2000-2005, by Object Refinery Limited.
  29:  * (C) Copyright 2005-2007, by Pentaho Corporation.
  30:  */
  31: package org.jfree.report;
  32: 
  33: import java.util.HashMap;
  34: import javax.swing.table.TableModel;
  35: 
  36: /**
  37:  * Creation-Date: 21.02.2006, 17:59:32
  38:  *
  39:  * @author Thomas Morgner
  40:  */
  41: public class TableReportDataFactory implements ReportDataFactory, Cloneable
  42: {
  43:   private HashMap tables;
  44: 
  45:   public TableReportDataFactory()
  46:   {
  47:     this.tables = new HashMap();
  48:   }
  49: 
  50:   public TableReportDataFactory(final String name, final TableModel tableModel)
  51:   {
  52:     this();
  53:     addTable(name, tableModel);
  54:   }
  55: 
  56:   public void addTable(final String name, final TableModel tableModel)
  57:   {
  58:     tables.put(name, tableModel);
  59:   }
  60: 
  61:   public void removeTable(final String name)
  62:   {
  63:     tables.remove(name);
  64:   }
  65: 
  66:   /**
  67:    * Queries a datasource. The string 'query' defines the name of the query. The
  68:    * Parameterset given here may contain more data than actually needed.
  69:    * <p/>
  70:    * The dataset may change between two calls, do not assume anything!
  71:    *
  72:    * @param query the name of the table.
  73:    * @param parameters are ignored for this factory.
  74:    * @return the report data or null.
  75:    */
  76:   public ReportData queryData(final String query, final DataSet parameters)
  77:           throws ReportDataFactoryException
  78:   {
  79:     final TableModel model = (TableModel) tables.get(query);
  80:     if (model == null)
  81:     {
  82:       return null;
  83:     }
  84: 
  85:     return new TableReportData(model);
  86:   }
  87: 
  88:   public void open()
  89:   {
  90: 
  91:   }
  92: 
  93:   public void close()
  94:   {
  95: 
  96:   }
  97: 
  98:   /**
  99:    * 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:     final TableReportDataFactory dataFactory = (TableReportDataFactory) super.clone();
 120:     dataFactory.tables = (HashMap) tables.clone();
 121:     return dataFactory;
 122:   }
 123: }