Hi to all,
It is possible to know if a entity it is changed after submit a form and first
the entityManager flush this change in db? I make this kind of question because
I need to controll if a entity be changed from the user, so I can sign a flag.
Morover I have the follow SFSB
| @Stateful
| @Scope(ScopeType.CONVERSATION)
| @Name("gestione")
| public class Gestione implements GestioneI {
|
| @PersistenceContext(type = PersistenceContextType.EXTENDED)
| EntityManager entityManager;
|
| @Out(scope = ScopeType.CONVERSATION, required = false)
| Documento doc;
|
| @In(required = false)
| Long idDocumento;
|
| @In(required = false)
| TaskInstance taskInstance;
|
| @In
| private Actor actor;
|
| @Logger
| private Log log;
|
| @DataModel
| private List<TaskInstance> taskInstacesResponsabile;
|
| @DataModelSelection
| private TaskInstance task;
|
| private String tab;
|
| @StartTask(flushMode=FlushModeType.MANUAL)
| public String iniziaValutazioneDoc(String tab) {
|
| String out = continuaValutazioneDoc(tab);
|
| return out;
| }
|
| @BeginTask(flushMode=FlushModeType.MANUAL)
| public String continuaValutazioneDoc(String tab) {
|
| this.tab = tab;
|
| doc = (Documento) entityManager.createQuery("select distinct d
from Documento d where d.id = :id").setParameter("id",
idDocumento).getSingleResult();
|
| return "/documento.xhtml";
|
| }
|
| @BeginTask
| @EndTask(transition = "confermato")
| public String chiudiValutazioneDoc(String tab) {
|
| if (taskInstance.getStart() == null)
| taskInstance.start();
|
| this.tab = tab;
|
| return "/todo2.xhtml";
| }
|
| @EndTask(transition = "confermato")
| public String confermaAInterno(String tab) {
|
|
taskInstance.setActorId((String)taskInstance.getVariable("responsabile"));
|
| taskInstance.setVariable(getTrackVariableNameForActor(actor),
actor.getId());
|
|
| this.tab = tab;
|
| return "/todo.xhtml";
| }
|
| @End
| public String sospendiValutazioneDoc(String tab) {
|
| this.tab = tab;
| return "/todo2.xhtml";
|
| }
|
|
|
|
|
| @Destroy
| @Remove
| public void destroy() {
| }
|
|
|
| public void caricaTasksInCarico() {
|
| JbpmContext context = ManagedJbpmContext.instance();
|
| taskInstacesResponsabile = context.getSession().createQuery(
| "select ti "+
| "from org.jbpm.taskmgmt.exe.TaskInstance ti, "+
| " org.jbpm.context.exe.VariableInstance vi join
vi.processInstance pi " +
| "where " +
| " pi.end = null and " +
| " ti.token.processInstance = pi and " +
| " vi.name = :track and " +
| " vi.value = :trackValue and " +
| " ( ti.actorId = null or ti.actorId != :actorId ) and " +
| " ti.isOpen = true" ).setString("track",
getTrackVariableNameForActor(actor)).setString("trackValue",actor.getId()).setString("actorId",
actor.getId()).list();
|
|
| for (Iterator iter = taskInstacesResponsabile.iterator();
iter.hasNext();) {
| TaskInstance element = (TaskInstance) iter.next();
| log.error("TaskInstance n° #0 di #1", element.getId(),
element.getActorId());
| }
|
| }
|
| /**
| * Genero il documento pdf in memoria
| */
| public String stampaDocumento() {
|
| FacesContext faces = FacesContext.getCurrentInstance();
|
| ByteArrayOutputStream bAOS = PdfUtility.stampaPDF(doc);
|
| HttpServletResponse response = (HttpServletResponse)
faces.getExternalContext().getResponse();
| response.setContentType("application/pdf");
| response.setContentLength(bAOS.size());
| response.setHeader("Content-disposition", "Attachment;
filename=\"" + doc.getClifor() + "_" + doc.getNumdoc() + ".pdf" + "\"");
| try {
| ServletOutputStream out;
| out = response.getOutputStream();
| out.write(bAOS.toByteArray());
| } catch (IOException e) {
| e.printStackTrace();
| }
| faces.responseComplete();
|
| return null;
|
| }
|
|
| public String consultazioneDocumento( String tab) {
|
| doc = (Documento) entityManager.createQuery("select distinct d
from Documento d where d.id = :id").setParameter("id",
task.getVariable("idDocumento"))
| .getSingleResult();
|
| this.tab = tab;
| return "/documento.xhtml";
|
| }
|
|
|
| public String salvaDocumento() {
|
| entityManager.persist(doc);
|
| return null;
| }
|
| public TaskInstance getTaskInstance() {
| return taskInstance;
| }
|
| public void setTaskInstance(TaskInstance taskInstance) {
| this.taskInstance = taskInstance;
| }
|
| /**
| * Mi torna il nome della variabile track per l'utente actor
| */
| private String getTrackVariableNameForActor(Actor actor) {
|
| String sActor = actor.getId();
| StringBuffer trackBuff = new StringBuffer();
| trackBuff.append("trackFor");
| if (sActor != null && sActor.trim().length() > 1) {
| trackBuff.append(sActor.substring(0, 1).toUpperCase());
| trackBuff.append(sActor.substring(1));
| }
| return trackBuff.toString();
|
| }
|
|
| }
|
|
when I call from a xhtml page the action: gestione.stampaDocumento
like:
| <h:form>
| <h:commandButton
| action="#{gestione.stampaDocumento}"
| value="#{messages.generapdf}"
| style="border: none;"
| image="/img/pdf.png"
| title="#{messages.generapdf}"
| rendered="#{s:hasRole('controllo')}">
| </h:commandButton>
| </h:form>
|
The possible change that user made to the endity are flush in to the db,
although i don't end the conversation, ( flushMode=FlushModeType.MANUAL is set
in al @starttask )
Thanks !!!
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