示例#1
0
  @Override
  public void start() {
    try {
      this.emf = emfRegistry.getEntityManagerFactory(configuration.persistenceUnitName());
    } catch (PersistenceException e) {
      throw new JpaStoreException(
          "Persistence Unit [" + this.configuration.persistenceUnitName() + "] not found", e);
    }

    ManagedType<?> mt;
    try {
      mt = emf.getMetamodel().entity(this.configuration.entityClass());
    } catch (IllegalArgumentException e) {
      throw new JpaStoreException(
          "Entity class ["
              + this.configuration.entityClass().getName()
              + " specified in configuration is not recognized by the EntityManagerFactory with Persistence Unit ["
              + this.configuration.persistenceUnitName()
              + "]",
          e);
    }

    if (!(mt instanceof IdentifiableType)) {
      throw new JpaStoreException(
          "Entity class must have one and only one identifier (@Id or @EmbeddedId)");
    }
    IdentifiableType<?> it = (IdentifiableType<?>) mt;
    if (!it.hasSingleIdAttribute()) {
      throw new JpaStoreException(
          "Entity class has more than one identifier.  It must have only one identifier.");
    }

    Type<?> idType = it.getIdType();
    Class<?> idJavaType = idType.getJavaType();

    if (idJavaType.isAnnotationPresent(GeneratedValue.class)) {
      throw new JpaStoreException(
          "Entity class has one identifier, but it must not have @GeneratedValue annotation");
    }
  }
示例#2
0
  @Override
  public void process(
      KeyFilter filter,
      final CacheLoaderTask task,
      Executor executor,
      boolean fetchValue,
      final boolean fetchMetadata) {
    ExecutorAllCompletionService eacs = new ExecutorAllCompletionService(executor);
    final TaskContextImpl taskContext = new TaskContextImpl();
    EntityManager em = emf.createEntityManager();

    try {
      CriteriaBuilder cb = em.getCriteriaBuilder();
      CriteriaQuery cq = cb.createQuery();
      Root root = cq.from(configuration.entityClass());
      Type idType = root.getModel().getIdType();
      SingularAttribute idAttr = root.getModel().getId(idType.getJavaType());
      cq.select(root.get(idAttr));

      for (final Object key : em.createQuery(cq).getResultList()) {
        if (taskContext.isStopped()) break;
        if (filter != null && !filter.shouldLoadKey(key)) {
          if (trace) log.trace("Key " + key + " filtered");
          continue;
        }
        EntityTransaction txn = em.getTransaction();

        Object tempEntity = null;
        InternalMetadata tempMetadata = null;
        boolean loaded = false;
        txn.begin();
        try {
          do {
            try {
              tempEntity = fetchValue ? em.find(configuration.entityClass(), key) : null;
              tempMetadata = fetchMetadata ? getMetadata(em, key) : null;
            } finally {
              try {
                txn.commit();
                loaded = true;
              } catch (Exception e) {
                log.trace("Failed to load once", e);
              }
            }
          } while (!loaded);
        } finally {
          if (txn != null && txn.isActive()) txn.rollback();
        }
        final Object entity = tempEntity;
        final InternalMetadata metadata = tempMetadata;
        if (trace) log.trace("Processing " + key + " -> " + entity + "(" + metadata + ")");

        if (metadata != null && metadata.isExpired(timeService.wallClockTime())) continue;
        eacs.submit(
            new Callable<Void>() {
              @Override
              public Void call() throws Exception {
                try {
                  final MarshalledEntry marshalledEntry =
                      marshallerEntryFactory.newMarshalledEntry(key, entity, metadata);
                  if (marshalledEntry != null) {
                    task.processEntry(marshalledEntry, taskContext);
                  }
                  return null;
                } catch (Exception e) {
                  log.errorExecutingParallelStoreTask(e);
                  throw e;
                }
              }
            });
      }
      eacs.waitUntilAllCompleted();
      if (eacs.isExceptionThrown()) {
        throw new org.infinispan.persistence.spi.PersistenceException(
            "Execution exception!", eacs.getFirstException());
      }
    } finally {
      em.close();
    }
  }