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| import java.util.HashMap ;
import javax.swing.table.TableModel ;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRField;
import net.sf.jasperreports.engine.JRRewindableDataSource;
/**
* @author Teodor Danciu (teodord@users.sourceforge.net)
* @version $Id: JRTableModelDataSource.java 1229 2006-04-19 13:27:35 +0300 (Wed, 19 Apr 2006) teodord $
*/
public class JRTableModelDataSource implements JRRewindableDataSource
{
/**
*
*/
private TableModel tableModel = null;
private int index = -1;
private HashMap columnNames = new HashMap ();
/**
*
*/
public JRTableModelDataSource(TableModel model)
{
this.tableModel = model;
if (this.tableModel != null)
{
for(int i = 0; i < tableModel.getColumnCount(); i++)
{
this.columnNames.put(tableModel.getColumnName(i), new Integer (i));
}
}
}
/**
*
*/
public boolean next()
{
this.index++;
if (this.tableModel != null)
{
return (this.index < this.tableModel.getRowCount());
}
return false;
}
/**
*
*/
public Object getFieldValue(JRField jrField) throws JRException
{
String fieldName = jrField.getName();
Integer columnIndex = (Integer )this.columnNames.get(fieldName);
if (columnIndex != null)
{
return this.tableModel.getValueAt(index, columnIndex.intValue());
}
else if (fieldName.startsWith("COLUMN_"))
{
return this.tableModel.getValueAt(index, Integer.parseInt(fieldName.substring(7)));
}
else
{
throw new JRException("Unknown column name : " + fieldName);
}
}
/**
*
*/
public void moveFirst()
{
this.index = -1;
}
} |
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