private void throwObjectDeletedIfNecessary(LoadEvent event, EntityEntry oldEntry) {
Status status = oldEntry.getStatus();
if (status == Status.DELETED || status == Status.GONE) {
throw new ObjectDeletedException(
"The object with that id was deleted", event.getEntityId(), event.getEntityClassName());
}
}
private void checkNaturalId(
EntityPersister persister,
EntityEntry entry,
Object[] current,
Object[] loaded,
EntityMode entityMode,
SessionImplementor session) {
if (persister.hasNaturalIdentifier() && entry.getStatus() != Status.READ_ONLY) {
Object[] snapshot = null;
Type[] types = persister.getPropertyTypes();
int[] props = persister.getNaturalIdentifierProperties();
boolean[] updateable = persister.getPropertyUpdateability();
for (int i = 0; i < props.length; i++) {
int prop = props[i];
if (!updateable[prop]) {
Object loadedVal;
if (loaded == null) {
if (snapshot == null) {
snapshot =
session.getPersistenceContext().getNaturalIdSnapshot(entry.getId(), persister);
}
loadedVal = snapshot[i];
} else {
loadedVal = loaded[prop];
}
if (!types[prop].isEqual(current[prop], loadedVal, entityMode)) {
throw new HibernateException(
"immutable natural identifier of an instance of "
+ persister.getEntityName()
+ " was altered");
}
}
}
}
}
private Object[] getValues(
Object entity,
EntityEntry entry,
EntityMode entityMode,
boolean mightBeDirty,
SessionImplementor session) {
final Object[] loadedState = entry.getLoadedState();
final Status status = entry.getStatus();
final EntityPersister persister = entry.getPersister();
final Object[] values;
if (status == Status.DELETED) {
// grab its state saved at deletion
values = entry.getDeletedState();
} else if (!mightBeDirty && loadedState != null) {
values = loadedState;
} else {
checkId(entity, persister, entry.getId(), entityMode, session);
// grab its current state
values = persister.getPropertyValues(entity, entityMode);
checkNaturalId(persister, entry, values, loadedState, entityMode, session);
}
return values;
}
/**
* Flushes a single entity's state to the database, by scheduling an update action, if necessary
*/
public void onFlushEntity(FlushEntityEvent event) throws HibernateException {
final Object entity = event.getEntity();
final EntityEntry entry = event.getEntityEntry();
final EventSource session = event.getSession();
final EntityPersister persister = entry.getPersister();
final Status status = entry.getStatus();
final EntityMode entityMode = session.getEntityMode();
final Type[] types = persister.getPropertyTypes();
final boolean mightBeDirty = entry.requiresDirtyCheck(entity);
final Object[] values = getValues(entity, entry, entityMode, mightBeDirty, session);
event.setPropertyValues(values);
// TODO: avoid this for non-new instances where mightBeDirty==false
boolean substitute = wrapCollections(session, persister, types, values);
if (isUpdateNecessary(event, mightBeDirty)) {
substitute = scheduleUpdate(event) || substitute;
}
if (status != Status.DELETED) {
// now update the object .. has to be outside the main if block above (because of collections)
if (substitute) persister.setPropertyValues(entity, values, entityMode);
// Search for collections by reachability, updating their role.
// We don't want to touch collections reachable from a deleted object
if (persister.hasCollections()) {
new FlushVisitor(session, entity).processEntityPropertyValues(values, types);
}
}
}
private boolean isVersionIncrementRequired(
FlushEntityEvent event, EntityEntry entry, EntityPersister persister, int[] dirtyProperties) {
final boolean isVersionIncrementRequired =
entry.getStatus() != Status.DELETED
&& (dirtyProperties == null
|| Versioning.isVersionIncrementRequired(
dirtyProperties,
event.hasDirtyCollection(),
persister.getPropertyVersionability()));
return isVersionIncrementRequired;
}
@Override
protected boolean invokeInterceptor(
SessionImplementor session,
Object entity,
EntityEntry entry,
Object[] values,
EntityPersister persister) {
boolean isDirty = false;
if (entry.getStatus() != Status.DELETED) {
if (callbackHandler.preUpdate(entity)) {
isDirty = copyState(entity, persister.getPropertyTypes(), values, session.getFactory());
}
}
return super.invokeInterceptor(session, entity, entry, values, persister) || isDirty;
}
protected Serializable entityIsPersistent(SaveOrUpdateEvent event) throws HibernateException {
LOG.trace("Ignoring persistent instance");
EntityEntry entityEntry = event.getEntry();
if (entityEntry == null) {
throw new AssertionFailure("entity was transient or detached");
} else {
if (entityEntry.getStatus() == Status.DELETED) {
throw new AssertionFailure("entity was deleted");
}
final SessionFactoryImplementor factory = event.getSession().getFactory();
Serializable requestedId = event.getRequestedId();
Serializable savedId;
if (requestedId == null) {
savedId = entityEntry.getId();
} else {
final boolean isEqual =
!entityEntry
.getPersister()
.getIdentifierType()
.isEqual(
requestedId, entityEntry.getId(), event.getSession().getEntityMode(), factory);
if (isEqual) {
throw new PersistentObjectException(
"object passed to save() was already persistent: "
+ MessageHelper.infoString(entityEntry.getPersister(), requestedId, factory));
}
savedId = requestedId;
}
if (LOG.isTraceEnabled())
LOG.trace(
"Object already associated with session: "
+ MessageHelper.infoString(entityEntry.getPersister(), savedId, factory));
return savedId;
}
}
/**
* The given save-update event named a transient entity.
*
* <p>Here, we will perform the save processing.
*
* @param event The save event to be handled.
* @return The entity's identifier after saving.
*/
protected Serializable entityIsTransient(SaveOrUpdateEvent event) {
LOG.trace("Saving transient instance");
final EventSource source = event.getSession();
EntityEntry entityEntry = event.getEntry();
if (entityEntry != null) {
if (entityEntry.getStatus() == Status.DELETED) {
source.forceFlush(entityEntry);
} else {
throw new AssertionFailure("entity was persistent");
}
}
Serializable id = saveWithGeneratedOrRequestedId(event);
source.getPersistenceContext().reassociateProxy(event.getObject(), id);
return id;
}
/** Perform a dirty check, and attach the results to the event */
protected void dirtyCheck(FlushEntityEvent event) throws HibernateException {
final Object entity = event.getEntity();
final Object[] values = event.getPropertyValues();
final SessionImplementor session = event.getSession();
final EntityEntry entry = event.getEntityEntry();
final EntityPersister persister = entry.getPersister();
final Serializable id = entry.getId();
final Object[] loadedState = entry.getLoadedState();
int[] dirtyProperties =
session
.getInterceptor()
.findDirty(
entity,
id,
values,
loadedState,
persister.getPropertyNames(),
persister.getPropertyTypes());
event.setDatabaseSnapshot(null);
final boolean interceptorHandledDirtyCheck;
boolean cannotDirtyCheck;
if (dirtyProperties == null) {
// Interceptor returned null, so do the dirtycheck ourself, if possible
interceptorHandledDirtyCheck = false;
cannotDirtyCheck = loadedState == null; // object loaded by update()
if (!cannotDirtyCheck) {
// dirty check against the usual snapshot of the entity
dirtyProperties = persister.findDirty(values, loadedState, entity, session);
} else if (entry.getStatus() == Status.DELETED
&& !event.getEntityEntry().isModifiableEntity()) {
// A non-modifiable (e.g., read-only or immutable) entity needs to be have
// references to transient entities set to null before being deleted. No other
// fields should be updated.
if (values != entry.getDeletedState()) {
throw new IllegalStateException(
"Entity has status Status.DELETED but values != entry.getDeletedState");
}
// Even if loadedState == null, we can dirty-check by comparing currentState and
// entry.getDeletedState() because the only fields to be updated are those that
// refer to transient entities that are being set to null.
// - currentState contains the entity's current property values.
// - entry.getDeletedState() contains the entity's current property values with
// references to transient entities set to null.
// - dirtyProperties will only contain properties that refer to transient entities
final Object[] currentState =
persister.getPropertyValues(event.getEntity(), event.getSession().getEntityMode());
dirtyProperties =
persister.findDirty(entry.getDeletedState(), currentState, entity, session);
cannotDirtyCheck = false;
} else {
// dirty check against the database snapshot, if possible/necessary
final Object[] databaseSnapshot = getDatabaseSnapshot(session, persister, id);
if (databaseSnapshot != null) {
dirtyProperties = persister.findModified(databaseSnapshot, values, entity, session);
cannotDirtyCheck = false;
event.setDatabaseSnapshot(databaseSnapshot);
}
}
} else {
// the Interceptor handled the dirty checking
cannotDirtyCheck = false;
interceptorHandledDirtyCheck = true;
}
logDirtyProperties(id, dirtyProperties, persister);
event.setDirtyProperties(dirtyProperties);
event.setDirtyCheckHandledByInterceptor(interceptorHandledDirtyCheck);
event.setDirtyCheckPossible(!cannotDirtyCheck);
}
private boolean scheduleUpdate(final FlushEntityEvent event) {
final EntityEntry entry = event.getEntityEntry();
final EventSource session = event.getSession();
final Object entity = event.getEntity();
final Status status = entry.getStatus();
final EntityMode entityMode = session.getEntityMode();
final EntityPersister persister = entry.getPersister();
final Object[] values = event.getPropertyValues();
if (LOG.isTraceEnabled()) {
if (status == Status.DELETED) {
if (!persister.isMutable())
LOG.trace(
"Updating immutable, deleted entity: "
+ MessageHelper.infoString(persister, entry.getId(), session.getFactory()));
else if (!entry.isModifiableEntity())
LOG.trace(
"Updating non-modifiable, deleted entity: "
+ MessageHelper.infoString(persister, entry.getId(), session.getFactory()));
else
LOG.trace(
"Updating deleted entity: "
+ MessageHelper.infoString(persister, entry.getId(), session.getFactory()));
} else
LOG.trace(
"Updating entity: "
+ MessageHelper.infoString(persister, entry.getId(), session.getFactory()));
}
final boolean intercepted = !entry.isBeingReplicated() && handleInterception(event);
// increment the version number (if necessary)
final Object nextVersion = getNextVersion(event);
// if it was dirtied by a collection only
int[] dirtyProperties = event.getDirtyProperties();
if (event.isDirtyCheckPossible() && dirtyProperties == null) {
if (!intercepted && !event.hasDirtyCollection()) {
throw new AssertionFailure("dirty, but no dirty properties");
}
dirtyProperties = ArrayHelper.EMPTY_INT_ARRAY;
}
// check nullability but do not doAfterTransactionCompletion command execute
// we'll use scheduled updates for that.
new Nullability(session).checkNullability(values, persister, true);
// schedule the update
// note that we intentionally do _not_ pass in currentPersistentState!
session
.getActionQueue()
.addAction(
new EntityUpdateAction(
entry.getId(),
values,
dirtyProperties,
event.hasDirtyCollection(),
(status == Status.DELETED && !entry.isModifiableEntity()
? persister.getPropertyValues(entity, entityMode)
: entry.getLoadedState()),
entry.getVersion(),
nextVersion,
entity,
entry.getRowId(),
persister,
session));
return intercepted;
}