Bug 155365 Can not set data type to "date time" when editing "Data Item"
Description: Can not set data type to "date time" when editing "Data Item" Steps to reproduce: 1. Insert a data item to the layout 2. Name it and set the expression to "a = new Date()" 3. Select the data type to date time 4. Press ok Actual result: An Birt Exception is thrown out. Expected result: No NPE thrown out
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ColumnBindingDialog.java
}
				catch ( Exception e1 )
				{
					WidgetUtil.processError( getShell( ), e1 );
				}
				refreshBindingTable( );
			}
		} );
		
		return parentComposite;
	}
	protected void handleAddEvent( )
	{
		DataColumnBindingDialog dialog = new DataColumnBindingDialog( );
		dialog.setInput( inputElement );
		dialog.setExpressionProvider( expressionProvider );
		if ( dialog.open( ) == Dialog.OK )
		{
			if ( bindingTable != null )
			{
				refreshBindingTable( );
				bindingTable.getTable( ).setSelection( bindingTable.getTable( )
						.getItemCount( ) - 1 );
			}
		}
	}
	protected void handleEditEvent( )
	{
		ComputedColumnHandle bindingHandle = null;
		int pos = bindingTable.getTable( ).getSelectionIndex( );