Bug 123042 When do some operation on the data drive manager, the eclipse may be broken.
Description: When do some operation on the data drive manager, the eclipse may be broken. Steps to reproduce: 1. new a JDBC data resource, and click the "Manage drivers" 2. delete a Jar file , and click "OK" 3. click the "Manage drivers" , add the deleted Jar File and click "OK" 4. click the "Manage drivers" and click the 'Drivers' tab, and set a 'Display name' and 'URL Template' and clcik 'OK' 5. click the "Manage drivers" and click the 'Drivers' tab, and delete the 'Display name' and 'URL Template' and clcik 'OK' Actual result: The eclipse is broken. Expect result: The eclipse runs in good shape.
data/org.eclipse.birt.report.data.oda.jdbc.ui/src/org/eclipse/birt/report/data/oda/jdbc/ui/dialogs/JdbcDriverManagerDialog.java
column2.addSelectionListener( new SelectionListener( ) {
			private boolean asc = false;
			public void widgetSelected( SelectionEvent e )
			{
				sortJar( 2, asc );
				asc = !asc;
			}
			public void widgetDefaultSelected( SelectionEvent e )
			{
				widgetSelected( e );
			}
		} );
		jarViewer = new TableViewer( table );
		jarViewer.setContentProvider( new IStructuredContentProvider( ) {
			public Object[] getElements( Object inputElement )
			{
				if ( inputElement instanceof Map )
				{
					return ( (Map) inputElement ).entrySet( ).toArray( );
				}
				return new Object[0];
			}
			public void inputChanged( Viewer viewer, Object oldInput,
					Object newInput )
			{
			}
			public void dispose( )
			{
			}
		} );