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Hibernate's core ORM functionality
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate.action.internal;
import java.io.Serializable;
import org.hibernate.AssertionFailure;
import org.hibernate.HibernateException;
import org.hibernate.cache.CacheException;
import org.hibernate.cache.spi.access.EntityDataAccess;
import org.hibernate.cache.spi.access.SoftLock;
import org.hibernate.cache.spi.entry.CacheEntry;
import org.hibernate.engine.internal.Versioning;
import org.hibernate.engine.spi.CachedNaturalIdValueSource;
import org.hibernate.engine.spi.EntityEntry;
import org.hibernate.engine.spi.SessionEventListenerManager;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.engine.spi.SharedSessionContractImplementor;
import org.hibernate.engine.spi.Status;
import org.hibernate.event.service.spi.EventListenerGroup;
import org.hibernate.event.spi.EventType;
import org.hibernate.event.spi.PostCommitUpdateEventListener;
import org.hibernate.event.spi.PostUpdateEvent;
import org.hibernate.event.spi.PostUpdateEventListener;
import org.hibernate.event.spi.PreUpdateEvent;
import org.hibernate.event.spi.PreUpdateEventListener;
import org.hibernate.persister.entity.EntityPersister;
import org.hibernate.stat.internal.StatsHelper;
import org.hibernate.type.TypeHelper;
/**
* The action for performing entity updates.
*/
public final class EntityUpdateAction extends EntityAction {
private final Object[] state;
private final Object[] previousState;
private final Object previousVersion;
private final int[] dirtyFields;
private final boolean hasDirtyCollection;
private final Object rowId;
private final Object[] previousNaturalIdValues;
private Object nextVersion;
private Object cacheEntry;
private SoftLock lock;
/**
* Constructs an EntityUpdateAction
*
* @param id The entity identifier
* @param state The current (extracted) entity state
* @param dirtyProperties The indexes (in reference to state) properties with dirty state
* @param hasDirtyCollection Were any collections dirty?
* @param previousState The previous (stored) state
* @param previousVersion The previous (stored) version
* @param nextVersion The incremented version
* @param instance The entity instance
* @param rowId The entity's rowid
* @param persister The entity's persister
* @param session The session
*/
public EntityUpdateAction(
final Serializable id,
final Object[] state,
final int[] dirtyProperties,
final boolean hasDirtyCollection,
final Object[] previousState,
final Object previousVersion,
final Object nextVersion,
final Object instance,
final Object rowId,
final EntityPersister persister,
final SharedSessionContractImplementor session) {
super( session, id, instance, persister );
this.state = state;
this.previousState = previousState;
this.previousVersion = previousVersion;
this.nextVersion = nextVersion;
this.dirtyFields = dirtyProperties;
this.hasDirtyCollection = hasDirtyCollection;
this.rowId = rowId;
this.previousNaturalIdValues = determinePreviousNaturalIdValues( persister, previousState, session, id );
session.getPersistenceContext().getNaturalIdHelper().manageLocalNaturalIdCrossReference(
persister,
id,
state,
previousNaturalIdValues,
CachedNaturalIdValueSource.UPDATE
);
}
private Object[] determinePreviousNaturalIdValues(
EntityPersister persister,
Object[] previousState,
SharedSessionContractImplementor session,
Serializable id) {
if ( ! persister.hasNaturalIdentifier() ) {
return null;
}
if ( previousState != null ) {
return session.getPersistenceContext().getNaturalIdHelper().extractNaturalIdValues( previousState, persister );
}
return session.getPersistenceContext().getNaturalIdSnapshot( id, persister );
}
@Override
public void execute() throws HibernateException {
final Serializable id = getId();
final EntityPersister persister = getPersister();
final SharedSessionContractImplementor session = getSession();
final Object instance = getInstance();
final boolean veto = preUpdate();
final SessionFactoryImplementor factory = session.getFactory();
Object previousVersion = this.previousVersion;
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( instance );
}
final Object ck;
if ( persister.canWriteToCache() ) {
final EntityDataAccess cache = persister.getCacheAccessStrategy();
ck = cache.generateCacheKey(
id,
persister,
factory,
session.getTenantIdentifier()
);
lock = cache.lockItem( session, ck, previousVersion );
}
else {
ck = null;
}
if ( !veto ) {
persister.update(
id,
state,
dirtyFields,
hasDirtyCollection,
previousState,
previousVersion,
instance,
rowId,
session
);
}
final EntityEntry entry = session.getPersistenceContext().getEntry( instance );
if ( entry == null ) {
throw new AssertionFailure( "possible nonthreadsafe access to session" );
}
if ( entry.getStatus()==Status.MANAGED || persister.isVersionPropertyGenerated() ) {
// get the updated snapshot of the entity state by cloning current state;
// it is safe to copy in place, since by this time no-one else (should have)
// has a reference to the array
TypeHelper.deepCopy(
state,
persister.getPropertyTypes(),
persister.getPropertyCheckability(),
state,
session
);
if ( persister.hasUpdateGeneratedProperties() ) {
// this entity defines proeprty generation, so process those generated
// values...
persister.processUpdateGeneratedProperties( id, instance, state, session );
if ( persister.isVersionPropertyGenerated() ) {
nextVersion = Versioning.getVersion( state, persister );
}
}
// have the entity entry doAfterTransactionCompletion post-update processing, passing it the
// update state and the new version (if one).
entry.postUpdate( instance, state, nextVersion );
}
if ( persister.canWriteToCache() ) {
if ( persister.isCacheInvalidationRequired() || entry.getStatus()!= Status.MANAGED ) {
persister.getCacheAccessStrategy().remove( session, ck);
}
else if ( session.getCacheMode().isPutEnabled() ) {
//TODO: inefficient if that cache is just going to ignore the updated state!
final CacheEntry ce = persister.buildCacheEntry( instance,state, nextVersion, getSession() );
cacheEntry = persister.getCacheEntryStructure().structure( ce );
final boolean put = cacheUpdate( persister, previousVersion, ck );
if ( put && factory.getStatistics().isStatisticsEnabled() ) {
factory.getStatistics().entityCachePut(
StatsHelper.INSTANCE.getRootEntityRole( persister ),
getPersister().getCacheAccessStrategy().getRegion().getName()
);
}
}
}
session.getPersistenceContext().getNaturalIdHelper().manageSharedNaturalIdCrossReference(
persister,
id,
state,
previousNaturalIdValues,
CachedNaturalIdValueSource.UPDATE
);
postUpdate();
if ( factory.getStatistics().isStatisticsEnabled() && !veto ) {
factory.getStatistics().updateEntity( getPersister().getEntityName() );
}
}
private boolean cacheUpdate(EntityPersister persister, Object previousVersion, Object ck) {
final SharedSessionContractImplementor session = getSession();
try {
session.getEventListenerManager().cachePutStart();
return persister.getCacheAccessStrategy().update( session, ck, cacheEntry, nextVersion, previousVersion );
}
finally {
session.getEventListenerManager().cachePutEnd();
}
}
private boolean preUpdate() {
boolean veto = false;
final EventListenerGroup listenerGroup = listenerGroup( EventType.PRE_UPDATE );
if ( listenerGroup.isEmpty() ) {
return veto;
}
final PreUpdateEvent event = new PreUpdateEvent(
getInstance(),
getId(),
state,
previousState,
getPersister(),
eventSource()
);
for ( PreUpdateEventListener listener : listenerGroup.listeners() ) {
veto |= listener.onPreUpdate( event );
}
return veto;
}
private void postUpdate() {
final EventListenerGroup listenerGroup = listenerGroup( EventType.POST_UPDATE );
if ( listenerGroup.isEmpty() ) {
return;
}
final PostUpdateEvent event = new PostUpdateEvent(
getInstance(),
getId(),
state,
previousState,
dirtyFields,
getPersister(),
eventSource()
);
for ( PostUpdateEventListener listener : listenerGroup.listeners() ) {
listener.onPostUpdate( event );
}
}
private void postCommitUpdate(boolean success) {
final EventListenerGroup listenerGroup = listenerGroup( EventType.POST_COMMIT_UPDATE );
if ( listenerGroup.isEmpty() ) {
return;
}
final PostUpdateEvent event = new PostUpdateEvent(
getInstance(),
getId(),
state,
previousState,
dirtyFields,
getPersister(),
eventSource()
);
for ( PostUpdateEventListener listener : listenerGroup.listeners() ) {
if ( PostCommitUpdateEventListener.class.isInstance( listener ) ) {
if ( success ) {
listener.onPostUpdate( event );
}
else {
((PostCommitUpdateEventListener) listener).onPostUpdateCommitFailed( event );
}
}
else {
//default to the legacy implementation that always fires the event
listener.onPostUpdate( event );
}
}
}
@Override
protected boolean hasPostCommitEventListeners() {
final EventListenerGroup group = listenerGroup( EventType.POST_COMMIT_UPDATE );
for ( PostUpdateEventListener listener : group.listeners() ) {
if ( listener.requiresPostCommitHandling( getPersister() ) ) {
return true;
}
}
return false;
}
@Override
public void doAfterTransactionCompletion(boolean success, SharedSessionContractImplementor session) throws CacheException {
final EntityPersister persister = getPersister();
if ( persister.canWriteToCache() ) {
final EntityDataAccess cache = persister.getCacheAccessStrategy();
final Object ck = cache.generateCacheKey(
getId(),
persister,
session.getFactory(),
session.getTenantIdentifier()
);
if ( success &&
cacheEntry != null &&
!persister.isCacheInvalidationRequired() &&
session.getCacheMode().isPutEnabled() ) {
final boolean put = cacheAfterUpdate( cache, ck );
if ( put && getSession().getFactory().getStatistics().isStatisticsEnabled() ) {
session.getFactory().getStatistics().entityCachePut(
StatsHelper.INSTANCE.getRootEntityRole( persister ),
getPersister().getCacheAccessStrategy().getRegion().getName()
);
}
}
else {
cache.unlockItem(session, ck, lock );
}
}
postCommitUpdate( success );
}
private boolean cacheAfterUpdate(EntityDataAccess cache, Object ck) {
final SharedSessionContractImplementor session = getSession();
SessionEventListenerManager eventListenerManager = session.getEventListenerManager();
try {
eventListenerManager.cachePutStart();
return cache.afterUpdate( session, ck, cacheEntry, nextVersion, previousVersion, lock );
}
finally {
eventListenerManager.cachePutEnd();
}
}
}