tablemap.java

一个OR Mapping 工具

package org.dbgen.view;

/*
 * @(#)TableMap.java	1.4 97/12/17
 *
 * Copyright (c) 1997 Sun Microsystems, Inc. All Rights Reserved.
 *
 * This software is the confidential and proprietary information of Sun
 * Microsystems, Inc. ("Confidential Information").  You shall not
 * disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered into
 * with Sun.
 *
 * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
 * SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 * PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
 * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
 * THIS SOFTWARE OR ITS DERIVATIVES.
 *
 */

/**
 * In a chain of data manipulators some behaviour is common. TableMap
 * provides most of this behavour and can be subclassed by filters
 * that only need to override a handful of specific methods. TableMap
 * implements TableModel by routing all requests to its model, and
 * TableModelListener by routing all events to its listeners. Inserting
 * a TableMap which has not been subclassed into a chain of table filters
 * should have no effect.
 *
 * @version 1.4 12/17/97
 * @author Philip Milne */

import javax.swing.table.*;
import javax.swing.event.TableModelListener;
import javax.swing.event.TableModelEvent;

public class TableMap extends AbstractTableModel implements TableModelListener
{
  protected TableModel model;

  public Class getColumnClass(int aColumn) {
    return model.getColumnClass(aColumn);
  }

  public int getColumnCount() {
    return (model == null) ? 0 : model.getColumnCount();
  }

  public String getColumnName(int aColumn) {
    return model.getColumnName(aColumn);
  }

  public TableModel getModel() {
    return model;
  }

  public int getRowCount() {
    return (model == null) ? 0 : model.getRowCount();
  }

  // By default, Implement TableModel by forwarding all messages
  // to the model.

  public Object getValueAt(int aRow, int aColumn) {
    return model.getValueAt(aRow, aColumn);
  }

  public boolean isCellEditable(int row, int column) {
    return model.isCellEditable(row, column);
  }

  public void setModel(TableModel model) {
    this.model = model;
    model.addTableModelListener(this);
  }

  public void setValueAt(Object aValue, int aRow, int aColumn) {
    model.setValueAt(aValue, aRow, aColumn);
  }

  //
  // Implementation of the TableModelListener interface,
  //

  // By default forward all events to all the listeners.
  public void tableChanged(TableModelEvent e) {
    fireTableChanged(e);
  }
}