11:42 a.m.
If I understand you well enough then....
if you are going to use a SSB then you pretty much have to manage the data it contains if
you are going to update the contents of that data in another conversation...
I have added addOrganisationToExistingList and other "call back" methods that
are called by "external" conversations that fix up the data in my SSB (see below
- addOrganisationToExistingList)
Caching is helping you not hit the database.. but you got to manage cleaning up the
"various" caches if you do stuff invisible to it... if that makes sense.
|
| /**
| * @author Tony Herstell
| * @version $Revision: 1.4 $ $Date: 2007-02-08 00:05:32 $
| */
| public interface FindOrganisationController {
|
| public void initOrganisations();
|
| public String startFind();
|
| public String applyFilter();
|
| public void destroy();
|
| // GUI Support Methods
| public void selectedSearchCriteriaPanelChanged(ValueChangeEvent event);
|
| public void setSelectedSearchCriteriaPanel(String selectedPanel);
|
| public String getSelectedSearchCriteriaPanel();
|
| public String getALL_OPTION();
|
| public String getFILTERED_OPTION();
|
| public boolean getAscending();
|
| public void setAscending(boolean ascending);
|
| public String getSortColumn();
|
| public void setSortColumn(String sortColumn);
|
| public void physicalDontCareValueChanged(ValueChangeEvent event);
|
| public String getPhysicalValueRequiredPanel();
|
| public String getPHYSICAL_VALUE_REQUIRED();
|
| public String getPHYSICAL_VALUE_NOT_REQUIRED();
|
| public boolean getPhysicalDontCare();
|
| public void setPhysicalDontCare(boolean physicalDontCare);
|
|
| /*
| * Used by external rountines to update the session organisations list object.
| */
| public void addOrganisationToExistingList(Organisation organisation);
|
| public void updateOrganisationInExistingList(Organisation organisation);
|
| public void deleteOrganisationFromExistingList(Organisation organisation);
|
| }
|
|
Gavin will probably have sleepless nights over this code... :)
|
| public void addOrganisationToExistingList(Organisation createdOrganisation) {
| log.info("> addOrganisationToExistingList");
| List<Organisation> organisationsList = new ArrayList<Organisation>();
| organisationsList.add(createdOrganisation);
| organisations = organisationsList.toArray(new Organisation[0]);
| sort();
| log.info("< addOrganisationToExistingList");
| }
|
| public void deleteOrganisationFromExistingList(Organisation deletedOrganisation) {
| log.info("> deleteOrganisationFromExistingList");
| List<Organisation> organisationsList = new ArrayList<Organisation>();
| for (Organisation eachOrganisation : organisations) {
| if (deletedOrganisation.getId().compareTo(eachOrganisation.getId()) != 0) {
| organisationsList.add(eachOrganisation);
| }
| }
| organisations = organisationsList.toArray(new Organisation[0]);
| log.info("< deleteOrganisationFromExistingList");
| }
|
| public void updateOrganisationInExistingList(Organisation updatedOrganisation) {
| log.info("> updateOrganisationInExistingList");
| List<Organisation> organisationsList = new ArrayList<Organisation>();
| for (Organisation eachOrganisation : organisations) {
| if (updatedOrganisation.getId().compareTo(eachOrganisation.getId()) != 0) {
| organisationsList.add(eachOrganisation);
| } else {
| em.refresh(eachOrganisation); // Force the update of the organisation in the em
cache.
| if (eachOrganisation.getPicture() != null) {
| em.refresh(eachOrganisation.getPicture()); // Force the update of the picture
(for the user) in the em cache.
| }
| log.info(" from the DBase (refreshed) => " + eachOrganisation);
| organisationsList.add(eachOrganisation);
| }
| }
| organisations = organisationsList.toArray(new Organisation[0]);
| applyCurrentQuery();
| log.info("< updateOrganisationInExistingList");
| }
|
|
|
and inside my Crud Controller:
| @Stateful
| @Name("cRUDOrganisationController")
| @Conversational
| public class CRUDOrganisationControllerImpl implements Serializable,
CRUDOrganisationController {
|
Inject my SSB so I can call back to it.. to tell it its been updated!
| /*
| * When we update the organisation then we have to laise with the
FindOrganisationsController to refine its list of organisations.
| */
| @In(create=true)
| @Out
| private FindOrganisationController findOrganisationController;
|
|
And at the end of this external conversation, i call back to the SSB...
| @End
| @TransactionAttribute(TransactionAttributeType.REQUIRED)
| public String update() {
| log.info("> update");
| em.merge(organisation);
| em.flush();
| facesMessages.addFromResourceBundle("organisation_update_successful");
|
| /*
| * We need to update this organisation in the list of organisations in the session
scoped FindOrganisationController
| */
| if (findOrganisationController != null) {
| log.info("Organisation sent to database => " + organisation);
| findOrganisationController.updateOrganisationInExistingList(organisation);
| }
|
| log.info("< update");
| return "findOrganisation";
| }
|
Other prople may have other solutions.
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