Examples with EntityPersister org.hibernate.persister.entity.EntityPersister used on opensource projects

Example 56 with EntityPersister

use of org.hibernate.persister.entity.EntityPersister in project hibernate-orm by hibernate.

the class DefaultRefreshEventListener method onRefresh.

/**
	 * Handle the given refresh event.
	 *
	 * @param event The refresh event to be handled.
	 */
public void onRefresh(RefreshEvent event, Map refreshedAlready) {
    final EventSource source = event.getSession();
    boolean isTransient;
    if (event.getEntityName() != null) {
        isTransient = !source.contains(event.getEntityName(), event.getObject());
    } else {
        isTransient = !source.contains(event.getObject());
    }
    if (source.getPersistenceContext().reassociateIfUninitializedProxy(event.getObject())) {
        if (isTransient) {
            source.setReadOnly(event.getObject(), source.isDefaultReadOnly());
        }
        return;
    }
    final Object object = source.getPersistenceContext().unproxyAndReassociate(event.getObject());
    if (refreshedAlready.containsKey(object)) {
        LOG.trace("Already refreshed");
        return;
    }
    final EntityEntry e = source.getPersistenceContext().getEntry(object);
    final EntityPersister persister;
    final Serializable id;
    if (e == null) {
        persister = source.getEntityPersister(event.getEntityName(), object);
        //refresh() does not pass an entityName
        id = persister.getIdentifier(object, event.getSession());
        if (LOG.isTraceEnabled()) {
            LOG.tracev("Refreshing transient {0}", MessageHelper.infoString(persister, id, source.getFactory()));
        }
        final EntityKey key = source.generateEntityKey(id, persister);
        if (source.getPersistenceContext().getEntry(key) != null) {
            throw new PersistentObjectException("attempted to refresh transient instance when persistent instance was already associated with the Session: " + MessageHelper.infoString(persister, id, source.getFactory()));
        }
    } else {
        if (LOG.isTraceEnabled()) {
            LOG.tracev("Refreshing ", MessageHelper.infoString(e.getPersister(), e.getId(), source.getFactory()));
        }
        if (!e.isExistsInDatabase()) {
            throw new UnresolvableObjectException(e.getId(), "this instance does not yet exist as a row in the database");
        }
        persister = e.getPersister();
        id = e.getId();
    }
    // cascade the refresh prior to refreshing this entity
    refreshedAlready.put(object, object);
    Cascade.cascade(CascadingActions.REFRESH, CascadePoint.BEFORE_REFRESH, source, persister, object, refreshedAlready);
    if (e != null) {
        final EntityKey key = source.generateEntityKey(id, persister);
        source.getPersistenceContext().removeEntity(key);
        if (persister.hasCollections()) {
            new EvictVisitor(source).process(object, persister);
        }
    }
    if (persister.hasCache()) {
        Object previousVersion = null;
        if (persister.isVersionPropertyGenerated()) {
            // we need to grab the version value from the entity, otherwise
            // we have issues with generated-version entities that may have
            // multiple actions queued during the same flush
            previousVersion = persister.getVersion(object);
        }
        final EntityRegionAccessStrategy cache = persister.getCacheAccessStrategy();
        final Object ck = cache.generateCacheKey(id, persister, source.getFactory(), source.getTenantIdentifier());
        final SoftLock lock = cache.lockItem(source, ck, previousVersion);
        source.getActionQueue().registerProcess(new AfterTransactionCompletionProcess() {

            @Override
            public void doAfterTransactionCompletion(boolean success, SharedSessionContractImplementor session) {
                cache.unlockItem(session, ck, lock);
            }
        });
        cache.remove(source, ck);
    }
    evictCachedCollections(persister, id, source);
    String previousFetchProfile = source.getLoadQueryInfluencers().getInternalFetchProfile();
    source.getLoadQueryInfluencers().setInternalFetchProfile("refresh");
    Object result = persister.load(id, object, event.getLockOptions(), source);
    // If it was transient, then set it to the default for the source.
    if (result != null) {
        if (!persister.isMutable()) {
            // this is probably redundant; it should already be read-only
            source.setReadOnly(result, true);
        } else {
            source.setReadOnly(result, (e == null ? source.isDefaultReadOnly() : e.isReadOnly()));
        }
    }
    source.getLoadQueryInfluencers().setInternalFetchProfile(previousFetchProfile);
    UnresolvableObjectException.throwIfNull(result, id, persister.getEntityName());
}

Example 57 with EntityPersister

use of org.hibernate.persister.entity.EntityPersister in project hibernate-orm by hibernate.

the class DefaultReplicateEventListener method onReplicate.

/**
	 * Handle the given replicate event.
	 *
	 * @param event The replicate event to be handled.
	 *
	 * @throws TransientObjectException An invalid attempt to replicate a transient entity.
	 */
public void onReplicate(ReplicateEvent event) {
    final EventSource source = event.getSession();
    if (source.getPersistenceContext().reassociateIfUninitializedProxy(event.getObject())) {
        LOG.trace("Uninitialized proxy passed to replicate()");
        return;
    }
    Object entity = source.getPersistenceContext().unproxyAndReassociate(event.getObject());
    if (source.getPersistenceContext().isEntryFor(entity)) {
        LOG.trace("Ignoring persistent instance passed to replicate()");
        //hum ... should we cascade anyway? throw an exception? fine like it is?
        return;
    }
    EntityPersister persister = source.getEntityPersister(event.getEntityName(), entity);
    // get the id from the object
    /*if ( persister.isUnsaved(entity, source) ) {
			throw new TransientObjectException("transient instance passed to replicate()");
		}*/
    Serializable id = persister.getIdentifier(entity, source);
    if (id == null) {
        throw new TransientObjectException("instance with null id passed to replicate()");
    }
    final ReplicationMode replicationMode = event.getReplicationMode();
    final Object oldVersion;
    if (replicationMode == ReplicationMode.EXCEPTION) {
        //always do an INSERT, and let it fail by constraint violation
        oldVersion = null;
    } else {
        //what is the version on the database?
        oldVersion = persister.getCurrentVersion(id, source);
    }
    final boolean traceEnabled = LOG.isTraceEnabled();
    if (oldVersion != null) {
        if (traceEnabled) {
            LOG.tracev("Found existing row for {0}", MessageHelper.infoString(persister, id, source.getFactory()));
        }
        /// HHH-2378
        final Object realOldVersion = persister.isVersioned() ? oldVersion : null;
        boolean canReplicate = replicationMode.shouldOverwriteCurrentVersion(entity, realOldVersion, persister.getVersion(entity), persister.getVersionType());
        // else do nothing (don't even reassociate object!)
        if (canReplicate) {
            performReplication(entity, id, realOldVersion, persister, replicationMode, source);
        } else if (traceEnabled) {
            LOG.trace("No need to replicate");
        }
    //TODO: would it be better to do a refresh from db?
    } else {
        // no existing row - do an insert
        if (traceEnabled) {
            LOG.tracev("No existing row, replicating new instance {0}", MessageHelper.infoString(persister, id, source.getFactory()));
        }
        // prefer re-generation of identity!
        final boolean regenerate = persister.isIdentifierAssignedByInsert();
        final EntityKey key = regenerate ? null : source.generateEntityKey(id, persister);
        performSaveOrReplicate(entity, key, persister, regenerate, replicationMode, source, true);
    }
}

Example 58 with EntityPersister

use of org.hibernate.persister.entity.EntityPersister in project hibernate-orm by hibernate.

the class DefaultLoadEventListener method assembleCacheEntry.

private Object assembleCacheEntry(final StandardCacheEntryImpl entry, final Serializable id, final EntityPersister persister, final LoadEvent event) throws HibernateException {
    final Object optionalObject = event.getInstanceToLoad();
    final EventSource session = event.getSession();
    final SessionFactoryImplementor factory = session.getFactory();
    if (traceEnabled) {
        LOG.tracev("Assembling entity from second-level cache: {0}", MessageHelper.infoString(persister, id, factory));
    }
    EntityPersister subclassPersister = factory.getEntityPersister(entry.getSubclass());
    Object result = optionalObject == null ? session.instantiate(subclassPersister, id) : optionalObject;
    // make it circular-reference safe
    final EntityKey entityKey = session.generateEntityKey(id, subclassPersister);
    TwoPhaseLoad.addUninitializedCachedEntity(entityKey, result, subclassPersister, LockMode.NONE, entry.getVersion(), session);
    Type[] types = subclassPersister.getPropertyTypes();
    Object[] values = entry.assemble(result, id, subclassPersister, session.getInterceptor(), session);
    // intializes result by side-effect
    TypeHelper.deepCopy(values, types, subclassPersister.getPropertyUpdateability(), values, session);
    Object version = Versioning.getVersion(values, subclassPersister);
    LOG.tracev("Cached Version: {0}", version);
    final PersistenceContext persistenceContext = session.getPersistenceContext();
    boolean isReadOnly = session.isDefaultReadOnly();
    if (persister.isMutable()) {
        Object proxy = persistenceContext.getProxy(entityKey);
        if (proxy != null) {
            // there is already a proxy for this impl
            // only set the status to read-only if the proxy is read-only
            isReadOnly = ((HibernateProxy) proxy).getHibernateLazyInitializer().isReadOnly();
        }
    } else {
        isReadOnly = true;
    }
    persistenceContext.addEntry(result, (isReadOnly ? Status.READ_ONLY : Status.MANAGED), values, null, id, version, LockMode.NONE, true, subclassPersister, false);
    subclassPersister.afterInitialize(result, session);
    persistenceContext.initializeNonLazyCollections();
    // upgrade the lock if necessary:
    //lock(result, lockMode);
    //PostLoad is needed for EJB3
    //TODO: reuse the PostLoadEvent...
    PostLoadEvent postLoadEvent = event.getPostLoadEvent().setEntity(result).setId(id).setPersister(persister);
    for (PostLoadEventListener listener : postLoadEventListeners(session)) {
        listener.onPostLoad(postLoadEvent);
    }
    return result;
}

Example 59 with EntityPersister

use of org.hibernate.persister.entity.EntityPersister in project hibernate-orm by hibernate.

the class DefaultLockEventListener method onLock.

/**
	 * Handle the given lock event.
	 *
	 * @param event The lock event to be handled.
	 * @throws HibernateException
	 */
public void onLock(LockEvent event) throws HibernateException {
    if (event.getObject() == null) {
        throw new NullPointerException("attempted to lock null");
    }
    if (event.getLockMode() == LockMode.WRITE) {
        throw new HibernateException("Invalid lock mode for lock()");
    }
    if (event.getLockMode() == LockMode.UPGRADE_SKIPLOCKED) {
        LOG.explicitSkipLockedLockCombo();
    }
    SessionImplementor source = event.getSession();
    Object entity = source.getPersistenceContext().unproxyAndReassociate(event.getObject());
    //TODO: if object was an uninitialized proxy, this is inefficient,
    //      resulting in two SQL selects
    EntityEntry entry = source.getPersistenceContext().getEntry(entity);
    if (entry == null) {
        final EntityPersister persister = source.getEntityPersister(event.getEntityName(), entity);
        final Serializable id = persister.getIdentifier(entity, source);
        if (!ForeignKeys.isNotTransient(event.getEntityName(), entity, Boolean.FALSE, source)) {
            throw new TransientObjectException("cannot lock an unsaved transient instance: " + persister.getEntityName());
        }
        entry = reassociate(event, entity, id, persister);
        cascadeOnLock(event, persister, entity);
    }
    upgradeLock(entity, entry, event.getLockOptions(), event.getSession());
}

Example 60 with EntityPersister

use of org.hibernate.persister.entity.EntityPersister in project hibernate-orm by hibernate.

the class DefaultMergeEventListener method entityIsDetached.

protected void entityIsDetached(MergeEvent event, Map copyCache) {
    LOG.trace("Merging detached instance");
    final Object entity = event.getEntity();
    final EventSource source = event.getSession();
    final EntityPersister persister = source.getEntityPersister(event.getEntityName(), entity);
    final String entityName = persister.getEntityName();
    Serializable id = event.getRequestedId();
    if (id == null) {
        id = persister.getIdentifier(entity, source);
    } else {
        // check that entity id = requestedId
        Serializable entityId = persister.getIdentifier(entity, source);
        if (!persister.getIdentifierType().isEqual(id, entityId, source.getFactory())) {
            throw new HibernateException("merge requested with id not matching id of passed entity");
        }
    }
    String previousFetchProfile = source.getLoadQueryInfluencers().getInternalFetchProfile();
    source.getLoadQueryInfluencers().setInternalFetchProfile("merge");
    //we must clone embedded composite identifiers, or
    //we will get back the same instance that we pass in
    final Serializable clonedIdentifier = (Serializable) persister.getIdentifierType().deepCopy(id, source.getFactory());
    final Object result = source.get(entityName, clonedIdentifier);
    source.getLoadQueryInfluencers().setInternalFetchProfile(previousFetchProfile);
    if (result == null) {
        //TODO: we should throw an exception if we really *know* for sure
        //      that this is a detached instance, rather than just assuming
        //throw new StaleObjectStateException(entityName, id);
        // we got here because we assumed that an instance
        // with an assigned id was detached, when it was
        // really persistent
        entityIsTransient(event, copyCache);
    } else {
        //beforeQuery cascade!
        ((MergeContext) copyCache).put(entity, result, true);
        final Object target = source.getPersistenceContext().unproxy(result);
        if (target == entity) {
            throw new AssertionFailure("entity was not detached");
        } else if (!source.getEntityName(target).equals(entityName)) {
            throw new WrongClassException("class of the given object did not match class of persistent copy", event.getRequestedId(), entityName);
        } else if (isVersionChanged(entity, source, persister, target)) {
            if (source.getFactory().getStatistics().isStatisticsEnabled()) {
                source.getFactory().getStatisticsImplementor().optimisticFailure(entityName);
            }
            throw new StaleObjectStateException(entityName, id);
        }
        // cascade first, so that all unsaved objects get their
        // copy created beforeQuery we actually copy
        cascadeOnMerge(source, persister, entity, copyCache);
        copyValues(persister, entity, target, source, copyCache);
        //copyValues works by reflection, so explicitly mark the entity instance dirty
        markInterceptorDirty(entity, target, persister);
        event.setResult(result);
    }
}