JpaUtil commit WITHOUT closing the window

When I click on cancel I want to rollback the transaction

How can I save all data in the view WITHOUT close the view?

/**
	 * Saves the selected object's current properties. We can get them back if a
	 * modification is canceled.
	 * 
	 * @see doResetToInitValues()
	 */
	public void doStoreInitValues() {

		if (getSelectedArticle() != null) {

			try {
				setOriginalArticle((Article) FDBeanUtils.cloneBean(getSelectedArticle()));
			} catch (IllegalAccessException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (InstantiationException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (InvocationTargetException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (NoSuchMethodException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}


	/**
	 * Reset the selected object to its origin property values.
	 * 
	 * @see doStoreInitValues()
	 * 
	 */
	public void doResetToInitValues() {

		if (getOriginalArticle() != null) {

			try {
				setSelectedArticle((Article) FDBeanUtils.cloneBean(getOriginalArticle()));

				// TODO Bug in DataBinder??
				windowArticleMain.invalidate();

			} catch (IllegalAccessException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (InstantiationException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (InvocationTargetException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (NoSuchMethodException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}

import java.lang.reflect.InvocationTargetException;

/**
 * EN: Utility class for beans.<br>
 * DE: Utility Klasse zum Manipulieren von Beans.<br>
 * 
 * @author Stephan Gerth
 */
public class FDBeanUtils {

	/**
	 * EN: Clone a bean based on the available property getters and setters,
	 * even if the bean class itself does not implement Cloneable.<br>
	 * Used by closing a tab/dialog to compare the initialBean's properties with
	 * the currentBean's properties to make a decision if the changed values
	 * must be stored.<br>
	 * DE: Gibt ein geklontes Bean aufgrund seiner vorhandenen Getter/Setter
	 * Werte zurueck. <br>
	 * Wird beim schliessen eines Tabs/Dialogs benutzt um die OriginalBean mit
	 * der aktuellenBean zu vergleichen. Besteht ein Unterschied kann
	 * entschieden werden, ob abgespeichert werden muss.<br>
	 * 
	 * @param bean
	 * @return
	 * @throws IllegalAccessException
	 * @throws InstantiationException
	 * @throws InvocationTargetException
	 * @throws NoSuchMethodException
	 */
	public static Object cloneBean(Object bean) throws IllegalAccessException, InstantiationException, InvocationTargetException, NoSuchMethodException {
		return org.apache.commons.beanutils.BeanUtils.cloneBean(bean);
	}

}