private CacheKey buildCacheKey(Serializable identifier, EntityPersister p) {
return new CacheKey(
identifier,
p.getIdentifierType(),
p.getRootEntityName(),
EntityMode.POJO,
SessionFactoryImpl.this);
}
/**
* Construct a new key for a caching natural identifier resolutions into the second level cache.
* Note that an entity name should always be the root entity name, not a subclass entity name.
*
* @param naturalIdValues The naturalIdValues associated with the cached data
* @param persister The persister for the entity
* @param session The originating session
*/
public NaturalIdCacheKey(
final Object[] naturalIdValues,
final EntityPersister persister,
final SessionImplementor session) {
this.entityName = persister.getRootEntityName();
this.tenantId = session.getTenantIdentifier();
this.naturalIdValues = new Serializable[naturalIdValues.length];
final SessionFactoryImplementor factory = session.getFactory();
final int[] naturalIdPropertyIndexes = persister.getNaturalIdentifierProperties();
final Type[] propertyTypes = persister.getPropertyTypes();
final int prime = 31;
int result = 1;
result = prime * result + ((this.entityName == null) ? 0 : this.entityName.hashCode());
result = prime * result + ((this.tenantId == null) ? 0 : this.tenantId.hashCode());
for (int i = 0; i < naturalIdValues.length; i++) {
final Type type = propertyTypes[naturalIdPropertyIndexes[i]];
final Object value = naturalIdValues[i];
result = prime * result + (value != null ? type.getHashCode(value, factory) : 0);
this.naturalIdValues[i] = type.disassemble(value, session, null);
}
this.hashCode = result;
this.toString =
new ValueHolder<String>(
new ValueHolder.DeferredInitializer<String>() {
@Override
public String initialize() {
// Complex toString is needed as naturalIds for entities are not simply based on a
// single value like primary keys
// the only same way to differentiate the keys is to included the disassembled
// values in the string.
final StringBuilder toStringBuilder =
new StringBuilder(entityName).append("##NaturalId[");
for (int i = 0; i < naturalIdValues.length; i++) {
toStringBuilder.append(naturalIdValues[i]);
if (i + 1 < naturalIdValues.length) {
toStringBuilder.append(", ");
}
}
toStringBuilder.append("]");
return toStringBuilder.toString();
}
});
}
/**
* Attempts to load the entity from the second-level cache.
*
* @return The entity from the second-level cache, or null.
* @throws HibernateException
*/
protected Object loadFromSecondLevelCache(
final LoadEvent event,
final EntityPersister persister,
final LoadEventListener.LoadType options)
throws HibernateException {
final SessionImplementor source = event.getSession();
final boolean useCache =
persister.hasCache()
&& source.getCacheMode().isGetEnabled()
&& event.getLockMode().lessThan(LockMode.READ);
if (useCache) {
final SessionFactoryImplementor factory = source.getFactory();
final CacheKey ck =
new CacheKey(
event.getEntityId(),
persister.getIdentifierType(),
persister.getRootEntityName(),
source.getEntityMode(),
source.getFactory());
Object ce = persister.getCache().get(ck, source.getTimestamp());
if (factory.getStatistics().isStatisticsEnabled()) {
if (ce == null) {
factory
.getStatisticsImplementor()
.secondLevelCacheMiss(persister.getCache().getRegionName());
} else {
factory
.getStatisticsImplementor()
.secondLevelCacheHit(persister.getCache().getRegionName());
}
}
if (ce != null) {
CacheEntry entry = (CacheEntry) persister.getCacheEntryStructure().destructure(ce, factory);
// Entity was found in second-level cache...
return assembleCacheEntry(entry, event.getEntityId(), persister, event);
}
}
return null;
}
@Override
public void doAfterTransactionCompletion(boolean success, SessionImplementor session)
throws HibernateException {
final EntityPersister persister = getPersister();
if (success && isCachePutEnabled(persister, getSession())) {
final CacheKey ck =
getSession()
.generateCacheKey(
getId(), persister.getIdentifierType(), persister.getRootEntityName());
final boolean put = persister.getCacheAccessStrategy().afterInsert(ck, cacheEntry, version);
if (put && getSession().getFactory().getStatistics().isStatisticsEnabled()) {
getSession()
.getFactory()
.getStatisticsImplementor()
.secondLevelCachePut(getPersister().getCacheAccessStrategy().getRegion().getName());
}
}
postCommitInsert();
}
/**
* If the class to be loaded has been configured with a cache, then lock given id in that cache
* and then perform the load.
*
* @return The loaded entity
* @throws HibernateException
*/
protected Object lockAndLoad(
final LoadEvent event,
final EntityPersister persister,
final EntityKey keyToLoad,
final LoadEventListener.LoadType options,
final SessionImplementor source)
throws HibernateException {
CacheConcurrencyStrategy.SoftLock lock = null;
final CacheKey ck;
if (persister.hasCache()) {
ck =
new CacheKey(
event.getEntityId(),
persister.getIdentifierType(),
persister.getRootEntityName(),
source.getEntityMode(),
source.getFactory());
lock = persister.getCache().lock(ck, null);
} else {
ck = null;
}
Object entity;
try {
entity = load(event, persister, keyToLoad, options);
} finally {
if (persister.hasCache()) {
persister.getCache().release(ck, lock);
}
}
Object proxy =
event.getSession().getPersistenceContext().proxyFor(persister, keyToLoad, entity);
return proxy;
}
@Override
public void execute() throws HibernateException {
nullifyTransientReferencesIfNotAlready();
final EntityPersister persister = getPersister();
final SessionImplementor session = getSession();
final Object instance = getInstance();
final Serializable id = getId();
final boolean veto = preInsert();
// Don't need to lock the cache here, since if someone
// else inserted the same pk first, the insert would fail
if (!veto) {
persister.insert(id, getState(), instance, session);
final EntityEntry entry = session.getPersistenceContext().getEntry(instance);
if (entry == null) {
throw new AssertionFailure("possible non-threadsafe access to session");
}
entry.postInsert(getState());
if (persister.hasInsertGeneratedProperties()) {
persister.processInsertGeneratedProperties(id, instance, getState(), session);
if (persister.isVersionPropertyGenerated()) {
version = Versioning.getVersion(getState(), persister);
}
entry.postUpdate(instance, getState(), version);
}
getSession().getPersistenceContext().registerInsertedKey(getPersister(), getId());
}
final SessionFactoryImplementor factory = getSession().getFactory();
if (isCachePutEnabled(persister, session)) {
final CacheEntry ce = persister.buildCacheEntry(instance, getState(), version, session);
cacheEntry = persister.getCacheEntryStructure().structure(ce);
final CacheKey ck =
session.generateCacheKey(
id, persister.getIdentifierType(), persister.getRootEntityName());
final boolean put = persister.getCacheAccessStrategy().insert(ck, cacheEntry, version);
if (put && factory.getStatistics().isStatisticsEnabled()) {
factory
.getStatisticsImplementor()
.secondLevelCachePut(getPersister().getCacheAccessStrategy().getRegion().getName());
}
}
handleNaturalIdPostSaveNotifications(id);
postInsert();
if (factory.getStatistics().isStatisticsEnabled() && !veto) {
factory.getStatisticsImplementor().insertEntity(getPersister().getEntityName());
}
markExecuted();
}
public void execute() throws HibernateException {
Serializable id = getId();
EntityPersister persister = getPersister();
SessionImplementor session = getSession();
Object instance = getInstance();
boolean veto = preDelete();
Object version = this.version;
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
version = persister.getVersion(instance, session.getEntityMode());
}
final CacheKey ck;
if (persister.hasCache()) {
ck =
new CacheKey(
id,
persister.getIdentifierType(),
persister.getRootEntityName(),
session.getEntityMode(),
session.getFactory());
lock = persister.getCacheAccessStrategy().lockItem(ck, version);
} else {
ck = null;
}
if (!isCascadeDeleteEnabled && !veto) {
persister.delete(id, version, instance, session);
}
// postDelete:
// After actually deleting a row, record the fact that the instance no longer
// exists on the database (needed for identity-column key generation), and
// remove it from the session cache
final PersistenceContext persistenceContext = session.getPersistenceContext();
EntityEntry entry = persistenceContext.removeEntry(instance);
if (entry == null) {
throw new AssertionFailure("possible nonthreadsafe access to session");
}
entry.postDelete();
persistenceContext.removeEntity(entry.getEntityKey());
persistenceContext.removeProxy(entry.getEntityKey());
if (persister.hasCache()) {
persister.getCacheAccessStrategy().remove(ck);
}
postDelete();
if (getSession().getFactory().getStatistics().isStatisticsEnabled() && !veto) {
getSession()
.getFactory()
.getStatisticsImplementor()
.deleteEntity(getPersister().getEntityName());
}
}
/**
* Perform the second step of 2-phase load. Fully initialize the entity instance.
*
* <p>After processing a JDBC result set, we "resolve" all the associations between the entities
* which were instantiated and had their state "hydrated" into an array
*/
public static void initializeEntity(
final Object entity,
final boolean readOnly,
final SessionImplementor session,
final PreLoadEvent preLoadEvent,
final PostLoadEvent postLoadEvent)
throws HibernateException {
// TODO: Should this be an InitializeEntityEventListener??? (watch out for performance!)
final PersistenceContext persistenceContext = session.getPersistenceContext();
EntityEntry entityEntry = persistenceContext.getEntry(entity);
if (entityEntry == null) {
throw new AssertionFailure("possible non-threadsafe access to the session");
}
EntityPersister persister = entityEntry.getPersister();
Serializable id = entityEntry.getId();
Object[] hydratedState = entityEntry.getLoadedState();
if (log.isDebugEnabled())
log.debug(
"resolving associations for "
+ MessageHelper.infoString(persister, id, session.getFactory()));
Type[] types = persister.getPropertyTypes();
for (int i = 0; i < hydratedState.length; i++) {
final Object value = hydratedState[i];
if (value != LazyPropertyInitializer.UNFETCHED_PROPERTY
&& value != BackrefPropertyAccessor.UNKNOWN) {
hydratedState[i] = types[i].resolve(value, session, entity);
}
}
// Must occur after resolving identifiers!
if (session.isEventSource()) {
preLoadEvent.setEntity(entity).setState(hydratedState).setId(id).setPersister(persister);
PreLoadEventListener[] listeners = session.getListeners().getPreLoadEventListeners();
for (int i = 0; i < listeners.length; i++) {
listeners[i].onPreLoad(preLoadEvent);
}
}
persister.setPropertyValues(entity, hydratedState, session.getEntityMode());
final SessionFactoryImplementor factory = session.getFactory();
if (persister.hasCache() && session.getCacheMode().isPutEnabled()) {
if (log.isDebugEnabled())
log.debug(
"adding entity to second-level cache: "
+ MessageHelper.infoString(persister, id, session.getFactory()));
Object version = Versioning.getVersion(hydratedState, persister);
CacheEntry entry =
new CacheEntry(
hydratedState,
persister,
entityEntry.isLoadedWithLazyPropertiesUnfetched(),
version,
session,
entity);
CacheKey cacheKey =
new CacheKey(
id,
persister.getIdentifierType(),
persister.getRootEntityName(),
session.getEntityMode(),
session.getFactory());
boolean put =
persister
.getCache()
.put(
cacheKey,
persister.getCacheEntryStructure().structure(entry),
session.getTimestamp(),
version,
persister.isVersioned() ? persister.getVersionType().getComparator() : null,
useMinimalPuts(
session,
entityEntry)); // we could use persister.hasLazyProperties() instead of true
if (put && factory.getStatistics().isStatisticsEnabled()) {
factory
.getStatisticsImplementor()
.secondLevelCachePut(persister.getCache().getRegionName());
}
}
if (readOnly || !persister.isMutable()) {
// no need to take a snapshot - this is a
// performance optimization, but not really
// important, except for entities with huge
// mutable property values
persistenceContext.setEntryStatus(entityEntry, Status.READ_ONLY);
} else {
// take a snapshot
TypeFactory.deepCopy(
hydratedState,
persister.getPropertyTypes(),
persister.getPropertyUpdateability(),
hydratedState, // after setting values to object, entityMode
session);
persistenceContext.setEntryStatus(entityEntry, Status.MANAGED);
}
persister.afterInitialize(entity, entityEntry.isLoadedWithLazyPropertiesUnfetched(), session);
if (session.isEventSource()) {
postLoadEvent.setEntity(entity).setId(id).setPersister(persister);
PostLoadEventListener[] listeners = session.getListeners().getPostLoadEventListeners();
for (int i = 0; i < listeners.length; i++) {
listeners[i].onPostLoad(postLoadEvent);
}
}
if (log.isDebugEnabled())
log.debug(
"done materializing entity "
+ MessageHelper.infoString(persister, id, session.getFactory()));
if (factory.getStatistics().isStatisticsEnabled()) {
factory.getStatisticsImplementor().loadEntity(persister.getEntityName());
}
}