Bug 120216 Group dialog should be showed even dataset is not set.
- Add a table report item - do not set the data set - try creating a new table group. - An error is shown Expected behavior - As part of the template requirements, we dont want UI to do the validation. User should be able to go and define a group, even if the dataset is not defined.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/util/UIUtil.java
else
			{
				moduleHandle.includeLibrary( DEUtil.getRelativedPath( moduleHandle.getFileName( ),
						libraryHandle.getFileName( ) ),
						defaultName );
				ExceptionHandler.openMessageBox( MSG_DIALOG_TITLE,
						MessageFormat.format( MSG_DIALOG_MSG, new String[]{
							libraryHandle.getFileName( )
						} ),
						SWT.ICON_INFORMATION );
				return true;
			}
		}
		return true;
	}
	/**
	 * Includes the library into within the current module.
	 * 
	 * @param libraryHandle
	 *            the library to include.
	 * @return true if it included successfully, or false if the operation
	 *         failed.
	 */
	public static boolean includeLibrary( LibraryHandle libraryHandle )
			throws DesignFileException, SemanticException
	{
		return includeLibrary( SessionHandleAdapter.getInstance( )
				.getReportDesignHandle( ), libraryHandle );
	}
}