// todo remove this once we move to new metamodel
public static RegionFactory createRegionFactory(Properties properties, boolean cachingEnabled) {
// todo : REMOVE! THIS IS TOTALLY A TEMPORARY HACK FOR org.hibernate.cfg.AnnotationBinder which
// will be going away
String regionFactoryClassName =
RegionFactoryInitiator.mapLegacyNames(
ConfigurationHelper.getString(
AvailableSettings.CACHE_REGION_FACTORY, properties, null));
if (regionFactoryClassName == null) {
regionFactoryClassName = DEF_CACHE_REG_FACTORY;
}
LOG.debugf("Cache region factory : %s", regionFactoryClassName);
try {
try {
return (RegionFactory)
org.hibernate.internal.util.ReflectHelper.classForName(regionFactoryClassName)
.getConstructor(Properties.class)
.newInstance(properties);
} catch (NoSuchMethodException e) {
// no constructor accepting Properties found, try no arg constructor
LOG.debugf(
"%s did not provide constructor accepting java.util.Properties; attempting no-arg constructor.",
regionFactoryClassName);
return (RegionFactory)
org.hibernate.internal.util.ReflectHelper.classForName(regionFactoryClassName)
.newInstance();
}
} catch (Exception e) {
throw new HibernateException(
"could not instantiate RegionFactory [" + regionFactoryClassName + "]", e);
}
}
/**
* Coordinates the efforts to load a given entity. First, an attempt is made to load the entity
* from the session-level cache. If not found there, an attempt is made to locate it in
* second-level cache. Lastly, an attempt is made to load it directly from the datasource.
*
* @param event The load event
* @return The loaded entity, or null.
*/
protected Serializable resolveNaturalId(final ResolveNaturalIdEvent event) {
final EntityPersister persister = event.getEntityPersister();
final boolean traceEnabled = LOG.isTraceEnabled();
if (traceEnabled)
LOG.tracev(
"Attempting to resolve: {0}",
MessageHelper.infoString(
persister, event.getNaturalIdValues(), event.getSession().getFactory()));
Serializable entityId = resolveFromCache(event);
if (entityId != null) {
if (traceEnabled)
LOG.tracev(
"Resolved object in cache: {0}",
MessageHelper.infoString(
persister, event.getNaturalIdValues(), event.getSession().getFactory()));
return entityId;
}
if (traceEnabled)
LOG.tracev(
"Object not resolved in any cache: {0}",
MessageHelper.infoString(
persister, event.getNaturalIdValues(), event.getSession().getFactory()));
return loadFromDatasource(event);
}
/**
* Prepares the save call using a newly generated id.
*
* @param entity The entity to be saved
* @param entityName The entity-name for the entity to be saved
* @param anything Generally cascade-specific information.
* @param source The session which is the source of this save event.
* @param requiresImmediateIdAccess does the event context require access to the identifier
* immediately after execution of this method (if not, post-insert style id generators may be
* postponed if we are outside a transaction).
* @return The id used to save the entity; may be null depending on the type of id generator used
* and the requiresImmediateIdAccess value
*/
protected Serializable saveWithGeneratedId(
Object entity,
String entityName,
Object anything,
EventSource source,
boolean requiresImmediateIdAccess) {
EntityPersister persister = source.getEntityPersister(entityName, entity);
Serializable generatedId = persister.getIdentifierGenerator().generate(source, entity);
if (generatedId == null) {
throw new IdentifierGenerationException("null id generated for:" + entity.getClass());
} else if (generatedId == IdentifierGeneratorHelper.SHORT_CIRCUIT_INDICATOR) {
return source.getIdentifier(entity);
} else if (generatedId == IdentifierGeneratorHelper.POST_INSERT_INDICATOR) {
return performSave(
entity, null, persister, true, anything, source, requiresImmediateIdAccess);
} else {
// TODO: define toString()s for generators
if (LOG.isDebugEnabled()) {
LOG.debugf(
"Generated identifier: %s, using strategy: %s",
persister.getIdentifierType().toLoggableString(generatedId, source.getFactory()),
persister.getIdentifierGenerator().getClass().getName());
}
return performSave(entity, generatedId, persister, false, anything, source, true);
}
}
/**
* process any unreferenced collections and then inspect all known collections, scheduling
* creates/removes/updates
*/
private void flushCollections(EventSource session) throws HibernateException {
if (LOG.isTraceEnabled()) {
LOG.trace("Processing unreferenced collections");
}
List list = IdentityMap.entries(session.getPersistenceContext().getCollectionEntries());
int size = list.size();
for (int i = 0; i < size; i++) {
Map.Entry me = (Map.Entry) list.get(i);
CollectionEntry ce = (CollectionEntry) me.getValue();
if (!ce.isReached() && !ce.isIgnore()) {
Collections.processUnreachableCollection((PersistentCollection) me.getKey(), session);
}
}
// Schedule updates to collections:
if (LOG.isTraceEnabled()) {
LOG.trace("Scheduling collection removes/(re)creates/updates");
}
list = IdentityMap.entries(session.getPersistenceContext().getCollectionEntries());
size = list.size();
ActionQueue actionQueue = session.getActionQueue();
for (int i = 0; i < size; i++) {
Map.Entry me = (Map.Entry) list.get(i);
PersistentCollection coll = (PersistentCollection) me.getKey();
CollectionEntry ce = (CollectionEntry) me.getValue();
if (ce.isDorecreate()) {
session.getInterceptor().onCollectionRecreate(coll, ce.getCurrentKey());
actionQueue.addAction(
new CollectionRecreateAction(
coll, ce.getCurrentPersister(), ce.getCurrentKey(), session));
}
if (ce.isDoremove()) {
session.getInterceptor().onCollectionRemove(coll, ce.getLoadedKey());
actionQueue.addAction(
new CollectionRemoveAction(
coll,
ce.getLoadedPersister(),
ce.getLoadedKey(),
ce.isSnapshotEmpty(coll),
session));
}
if (ce.isDoupdate()) {
session.getInterceptor().onCollectionUpdate(coll, ce.getLoadedKey());
actionQueue.addAction(
new CollectionUpdateAction(
coll,
ce.getLoadedPersister(),
ce.getLoadedKey(),
ce.isSnapshotEmpty(coll),
session));
}
}
actionQueue.sortCollectionActions();
}
/**
* Extract by bytes from the given stream.
*
* @param inputStream The stream of bytes.
* @return The contents as a {@code byte[]}
*/
public static byte[] extractBytes(InputStream inputStream) {
if (BinaryStream.class.isInstance(inputStream)) {
return ((BinaryStream) inputStream).getBytes();
}
// read the stream contents into a buffer and return the complete byte[]
ByteArrayOutputStream outputStream = new ByteArrayOutputStream(2048);
try {
byte[] buffer = new byte[2048];
while (true) {
int amountRead = inputStream.read(buffer);
if (amountRead == -1) {
break;
}
outputStream.write(buffer, 0, amountRead);
}
} catch (IOException ioe) {
throw new HibernateException("IOException occurred reading a binary value", ioe);
} finally {
try {
inputStream.close();
} catch (IOException e) {
LOG.unableToCloseInputStream(e);
}
try {
outputStream.close();
} catch (IOException e) {
LOG.unableToCloseOutputStream(e);
}
}
return outputStream.toByteArray();
}
@SuppressWarnings({"unchecked"})
public static void close(Statement statement) {
log.tracef("Closing prepared statement [%s]", statement);
try {
// if we are unable to "clean" the prepared statement,
// we do not close it
try {
if (statement.getMaxRows() != 0) {
statement.setMaxRows(0);
}
if (statement.getQueryTimeout() != 0) {
statement.setQueryTimeout(0);
}
} catch (SQLException sqle) {
// there was a problem "cleaning" the prepared statement
if (log.isDebugEnabled()) {
log.debugf("Exception clearing maxRows/queryTimeout [%s]", sqle.getMessage());
}
// EARLY EXIT!!!
return;
}
statement.close();
} catch (SQLException e) {
log.debugf("Unable to release JDBC statement [%s]", e.getMessage());
} catch (Exception e) {
// try to handle general errors more elegantly
log.debugf("Unable to release JDBC statement [%s]", e.getMessage());
}
}
@Override
public void initialize(Serializable id, SessionImplementor session) throws HibernateException {
if (log.isDebugEnabled()) {
log.debugf(
"Loading collection: %s",
MessageHelper.collectionInfoString(collectionPersister, id, getFactory()));
}
final Serializable[] ids = new Serializable[] {id};
try {
final QueryParameters qp = new QueryParameters();
qp.setPositionalParameterTypes(new Type[] {collectionPersister.getKeyType()});
qp.setPositionalParameterValues(ids);
qp.setCollectionKeys(ids);
executeLoad(session, qp, staticLoadQuery, true, null);
} catch (SQLException sqle) {
throw getFactory()
.getSQLExceptionHelper()
.convert(
sqle,
"could not initialize a collection: "
+ MessageHelper.collectionInfoString(collectionPersister, id, getFactory()),
staticLoadQuery.getSqlStatement());
}
log.debug("Done loading collection");
}
/**
* Returns <code>false</code> and fails to put the value if there is an existing un-writeable item
* mapped to this key.
*/
@Override
public final boolean putFromLoad(
Object key, Object value, long txTimestamp, Object version, boolean minimalPutOverride)
throws CacheException {
try {
LOG.debugf(
"putting key[%s] -> value[%s] into region[%s]",
key, value, getInternalRegion().getName());
writeLock.lock();
Lockable item = (Lockable) getInternalRegion().get(key);
boolean writeable =
item == null || item.isWriteable(txTimestamp, version, getVersionComparator());
if (writeable) {
LOG.debugf(
"putting key[%s] -> value[%s] into region[%s] success",
key, value, getInternalRegion().getName());
getInternalRegion().put(key, new Item(value, version, getInternalRegion().nextTimestamp()));
return true;
} else {
LOG.debugf(
"putting key[%s] -> value[%s] into region[%s] fail due to it is unwriteable",
key, value, getInternalRegion().getName());
return false;
}
} finally {
writeLock.unlock();
}
}
private void performExecution() {
LOG.debugf("Executing batch size: %s", batchPosition);
try {
for (Map.Entry<String, PreparedStatement> entry : getStatements().entrySet()) {
try {
final PreparedStatement statement = entry.getValue();
final int[] rowCounts;
try {
getJdbcCoordinator()
.getJdbcSessionOwner()
.getJdbcSessionContext()
.getObserver()
.jdbcExecuteBatchStart();
rowCounts = statement.executeBatch();
} finally {
getJdbcCoordinator()
.getJdbcSessionOwner()
.getJdbcSessionContext()
.getObserver()
.jdbcExecuteBatchEnd();
}
checkRowCounts(rowCounts, statement);
} catch (SQLException e) {
abortBatch();
throw sqlExceptionHelper().convert(e, "could not execute batch", entry.getKey());
}
}
} catch (RuntimeException re) {
LOG.unableToExecuteBatch(re.getMessage());
throw re;
} finally {
batchPosition = 0;
}
}
private void execute(
boolean script, boolean export, Writer fileOutput, Statement statement, final String sql)
throws IOException, SQLException {
final SqlExceptionHelper sqlExceptionHelper = new SqlExceptionHelper();
String formatted = formatter.format(sql);
if (delimiter != null) formatted += delimiter;
if (script) System.out.println(formatted);
LOG.debug(formatted);
if (outputFile != null) {
fileOutput.write(formatted + "\n");
}
if (export) {
statement.executeUpdate(sql);
try {
SQLWarning warnings = statement.getWarnings();
if (warnings != null) {
sqlExceptionHelper.logAndClearWarnings(connectionHelper.getConnection());
}
} catch (SQLException sqle) {
LOG.unableToLogSqlWarnings(sqle);
}
}
}
/**
* Returns <code>null</code> if the item is not readable. Locked items are not readable, nor are
* items created after the start of this transaction.
*/
@Override
public final Object get(Object key, long txTimestamp) throws CacheException {
LOG.debugf("getting key[%s] from region[%s]", key, getInternalRegion().getName());
try {
readLock.lock();
Lockable item = (Lockable) getInternalRegion().get(key);
boolean readable = item != null && item.isReadable(txTimestamp);
if (readable) {
LOG.debugf("hit key[%s] in region[%s]", key, getInternalRegion().getName());
return item.getValue();
} else {
if (item == null) {
LOG.debugf("miss key[%s] in region[%s]", key, getInternalRegion().getName());
} else {
LOG.debugf(
"hit key[%s] in region[%s], but it is unreadable",
key, getInternalRegion().getName());
}
return null;
}
} finally {
readLock.unlock();
}
}
private static RegionFactory createRegionFactory(
Properties properties, boolean cachingEnabled, ServiceRegistry serviceRegistry) {
String regionFactoryClassName =
RegionFactoryInitiator.mapLegacyNames(
ConfigurationHelper.getString(
AvailableSettings.CACHE_REGION_FACTORY, properties, null));
if (regionFactoryClassName == null || !cachingEnabled) {
regionFactoryClassName = DEF_CACHE_REG_FACTORY;
}
LOG.debugf("Cache region factory : %s", regionFactoryClassName);
try {
try {
return (RegionFactory)
serviceRegistry
.getService(ClassLoaderService.class)
.classForName(regionFactoryClassName)
.getConstructor(Properties.class)
.newInstance(properties);
} catch (NoSuchMethodException e) {
// no constructor accepting Properties found, try no arg constructor
LOG.debugf(
"%s did not provide constructor accepting java.util.Properties; attempting no-arg constructor.",
regionFactoryClassName);
return (RegionFactory)
serviceRegistry
.getService(ClassLoaderService.class)
.classForName(regionFactoryClassName)
.newInstance();
}
} catch (Exception e) {
throw new HibernateException(
"could not instantiate RegionFactory [" + regionFactoryClassName + "]", e);
}
}
@Override
public void register(ResultSet resultSet, Statement statement) {
log.tracef("Registering result set [%s]", resultSet);
if (statement == null) {
try {
statement = resultSet.getStatement();
} catch (SQLException e) {
throw convert(e, "unable to access Statement from ResultSet");
}
}
if (statement != null) {
// Keep this at DEBUG level, rather than warn. Numerous connection pool implementations can
// return a
// proxy/wrapper around the JDBC Statement, causing excessive logging here. See HHH-8210.
if (log.isDebugEnabled() && !xref.containsKey(statement)) {
log.debug("ResultSet statement was not registered (on register)");
}
Set<ResultSet> resultSets = xref.get(statement);
if (resultSets == null) {
resultSets = new HashSet<ResultSet>();
xref.put(statement, resultSets);
}
resultSets.add(resultSet);
} else {
unassociatedResultSets.add(resultSet);
}
}
@Override
public void release(ResultSet resultSet, Statement statement) {
log.tracef("Releasing result set [%s]", resultSet);
if (statement == null) {
try {
statement = resultSet.getStatement();
} catch (SQLException e) {
throw convert(e, "unable to access Statement from ResultSet");
}
}
if (statement != null) {
final Set<ResultSet> resultSets = xref.get(statement);
if (resultSets == null) {
log.unregisteredStatement();
} else {
resultSets.remove(resultSet);
if (resultSets.isEmpty()) {
xref.remove(statement);
}
}
} else {
final boolean removed = unassociatedResultSets.remove(resultSet);
if (!removed) {
log.unregisteredResultSetWithoutStatement();
}
}
close(resultSet);
}
/**
* Compile the query (generate the SQL).
*
* @throws org.hibernate.MappingException Indicates problems resolving things referenced in the
* query.
* @throws org.hibernate.QueryException Generally some form of syntatic failure.
*/
private void compile() throws QueryException, MappingException {
LOG.trace("Compiling query");
try {
ParserHelper.parse(
new PreprocessingParser(tokenReplacements),
queryString,
ParserHelper.HQL_SEPARATORS,
this);
renderSQL();
} catch (QueryException qe) {
qe.setQueryString(queryString);
throw qe;
} catch (MappingException me) {
throw me;
} catch (Exception e) {
LOG.debug("Unexpected query compilation problem", e);
e.printStackTrace();
QueryException qe = new QueryException("Incorrect query syntax", e);
qe.setQueryString(queryString);
throw qe;
}
postInstantiate();
compiled = true;
}
public void injectSessionFactory(SessionFactoryImplementor factory) {
if (this.factory != null) {
LOG.scopingTypesToSessionFactoryAfterAlreadyScoped(this.factory, factory);
} else {
LOG.trace("Scoping types to session factory " + factory);
}
this.factory = factory;
}
@Override
public <T> T delegateWork(WorkExecutorVisitable<T> work, boolean transacted)
throws HibernateException {
boolean wasAutoCommit = false;
try {
// todo : should we use a connection proxy here?
Connection connection = connectionProvider().getConnection();
try {
if (transacted) {
if (connection.getAutoCommit()) {
wasAutoCommit = true;
connection.setAutoCommit(false);
}
}
T result = work.accept(new WorkExecutor<T>(), connection);
if (transacted) {
connection.commit();
}
return result;
} catch (Exception e) {
try {
if (transacted && !connection.isClosed()) {
connection.rollback();
}
} catch (Exception ignore) {
LOG.unableToRollbackConnection(ignore);
}
if (e instanceof HibernateException) {
throw (HibernateException) e;
} else if (e instanceof SQLException) {
throw sqlExceptionHelper().convert((SQLException) e, "error performing isolated work");
} else {
throw new HibernateException("error performing isolated work", e);
}
} finally {
if (transacted && wasAutoCommit) {
try {
connection.setAutoCommit(true);
} catch (Exception ignore) {
LOG.trace("was unable to reset connection back to auto-commit");
}
}
try {
connectionProvider().closeConnection(connection);
} catch (Exception ignore) {
LOG.unableToReleaseIsolatedConnection(ignore);
}
}
} catch (SQLException sqle) {
throw sqlExceptionHelper().convert(sqle, "unable to obtain isolated JDBC connection");
}
}
protected boolean invokeDeleteLifecycle(
EventSource session, Object entity, EntityPersister persister) {
if (persister.implementsLifecycle()) {
LOG.debug("Calling onDelete()");
if (((Lifecycle) entity).onDelete(session)) {
LOG.debug("Deletion vetoed by onDelete()");
return true;
}
}
return false;
}
protected boolean invokeUpdateLifecycle(
Object entity, EntityPersister persister, EventSource source) {
if (persister.implementsLifecycle(source.getEntityMode())) {
LOG.debugf("Calling onUpdate()");
if (((Lifecycle) entity).onUpdate(source)) {
LOG.debugf("Update vetoed by onUpdate()");
return true;
}
}
return false;
}
private static void processDereferencedCollection(
PersistentCollection coll, SessionImplementor session) {
final PersistenceContext persistenceContext = session.getPersistenceContext();
CollectionEntry entry = persistenceContext.getCollectionEntry(coll);
final CollectionPersister loadedPersister = entry.getLoadedPersister();
if (LOG.isDebugEnabled() && loadedPersister != null) {
LOG.debugf(
"Collection dereferenced: %s",
MessageHelper.collectionInfoString(
loadedPersister, entry.getLoadedKey(), session.getFactory()));
}
// do a check
boolean hasOrphanDelete = loadedPersister != null && loadedPersister.hasOrphanDelete();
if (hasOrphanDelete) {
Serializable ownerId =
loadedPersister.getOwnerEntityPersister().getIdentifier(coll.getOwner(), session);
if (ownerId == null) {
// the owning entity may have been deleted and its identifier unset due to
// identifier-rollback; in which case, try to look up its identifier from
// the persistence context
if (session.getFactory().getSettings().isIdentifierRollbackEnabled()) {
EntityEntry ownerEntry = persistenceContext.getEntry(coll.getOwner());
if (ownerEntry != null) {
ownerId = ownerEntry.getId();
}
}
if (ownerId == null) {
throw new AssertionFailure(
"Unable to determine collection owner identifier for orphan-delete processing");
}
}
EntityKey key = session.generateEntityKey(ownerId, loadedPersister.getOwnerEntityPersister());
Object owner = persistenceContext.getEntity(key);
if (owner == null) {
throw new AssertionFailure(
"collection owner not associated with session: " + loadedPersister.getRole());
}
EntityEntry e = persistenceContext.getEntry(owner);
// only collections belonging to deleted entities are allowed to be dereferenced in the case
// of orphan delete
if (e != null && e.getStatus() != Status.DELETED && e.getStatus() != Status.GONE) {
throw new HibernateException(
"A collection with cascade=\"all-delete-orphan\" was no longer referenced by the owning entity instance: "
+ loadedPersister.getRole());
}
}
// do the work
entry.setCurrentPersister(null);
entry.setCurrentKey(null);
prepareCollectionForUpdate(coll, entry, session.getFactory());
}
/**
* Generate the next increment in the optimistic locking value according the {@link VersionType}
* contract for the version property.
*
* @param version The current version
* @param versionType The version type
* @param session The originating session
* @return The incremented optimistic locking value.
*/
@SuppressWarnings("unchecked")
public static Object increment(
Object version, VersionType versionType, SharedSessionContractImplementor session) {
final Object next = versionType.next(version, session);
if (LOG.isTraceEnabled()) {
LOG.tracef(
"Incrementing: %s to %s",
versionType.toLoggableString(version, session.getFactory()),
versionType.toLoggableString(next, session.getFactory()));
}
return next;
}
@SuppressWarnings({"unchecked"})
public static void close(ResultSet resultSet) {
log.tracef("Closing result set [%s]", resultSet);
try {
resultSet.close();
} catch (SQLException e) {
log.debugf("Unable to release JDBC result set [%s]", e.getMessage());
} catch (Exception e) {
// try to handle general errors more elegantly
log.debugf("Unable to release JDBC result set [%s]", e.getMessage());
}
}
protected boolean invokeSaveLifecycle(
Object entity, EntityPersister persister, EventSource source) {
// Sub-insertions should occur before containing insertion so
// Try to do the callback now
if (persister.implementsLifecycle()) {
LOG.debug("Calling onSave()");
if (((Lifecycle) entity).onSave(source)) {
LOG.debug("Insertion vetoed by onSave()");
return true;
}
}
return false;
}
/* 34: */
/* 35: */ public Date seed(SessionImplementor session) /* 36: */ {
/* 37: 67 */ if (session == null)
/* 38: */ {
/* 39: 68 */ LOG.trace("Incoming session was null; using current jvm time");
/* 40: 69 */ return super.seed(session);
/* 41: */ }
/* 42: 71 */ if (!session.getFactory().getDialect().supportsCurrentTimestampSelection())
/* 43: */ {
/* 44: 72 */ LOG.debug(
"Falling back to vm-based timestamp, as dialect does not support current timestamp selection");
/* 45: 73 */ return super.seed(session);
/* 46: */ }
/* 47: 76 */ return getCurrentTimestamp(session);
/* 48: */ }
/**
* Handle the given dirty-check event.
*
* @param event The dirty-check event to be handled.
* @throws HibernateException
*/
public void onDirtyCheck(DirtyCheckEvent event) throws HibernateException {
int oldSize = event.getSession().getActionQueue().numberOfCollectionRemovals();
try {
flushEverythingToExecutions(event);
boolean wasNeeded = event.getSession().getActionQueue().hasAnyQueuedActions();
if (wasNeeded) LOG.debugf("Session dirty");
else LOG.debugf("Session not dirty");
event.setDirty(wasNeeded);
} finally {
event.getSession().getActionQueue().clearFromFlushNeededCheck(oldSize);
}
}
/**
* Create the subselect fetch query fragment for the provided {@link QueryParameters} with SELECT
* and ORDER BY clauses removed.
*
* @param queryParameters -the query parameters.
* @return the subselect fetch query fragment.
*/
public static String createSubselectFetchQueryFragment(QueryParameters queryParameters) {
// TODO: ugly here:
final String queryString = queryParameters.getFilteredSQL();
final int fromIndex = getFromIndex(queryString);
final int orderByIndex = queryString.lastIndexOf("order by");
final String subselectQueryFragment =
orderByIndex > 0
? queryString.substring(fromIndex, orderByIndex)
: queryString.substring(fromIndex);
if (LOG.isTraceEnabled()) {
LOG.tracef("SubselectFetch query fragment: %s", subselectQueryFragment);
}
return subselectQueryFragment;
}
private void logDirtyProperties(
Serializable id, int[] dirtyProperties, EntityPersister persister) {
if (LOG.isTraceEnabled() && dirtyProperties != null && dirtyProperties.length > 0) {
final String[] allPropertyNames = persister.getPropertyNames();
final String[] dirtyPropertyNames = new String[dirtyProperties.length];
for (int i = 0; i < dirtyProperties.length; i++) {
dirtyPropertyNames[i] = allPropertyNames[dirtyProperties[i]];
}
LOG.trace(
"Found dirty properties ["
+ MessageHelper.infoString(persister.getEntityName(), id)
+ "] : "
+ dirtyPropertyNames);
}
}
/**
* We encountered a delete request on a transient instance.
*
* <p>This is a deviation from historical Hibernate (pre-3.2) behavior to align with the JPA spec,
* which states that transient entities can be passed to remove operation in which case cascades
* still need to be performed.
*
* @param session The session which is the source of the event
* @param entity The entity being delete processed
* @param cascadeDeleteEnabled Is cascading of deletes enabled
* @param persister The entity persister
* @param transientEntities A cache of already visited transient entities (to avoid infinite
* recursion).
*/
protected void deleteTransientEntity(
EventSource session,
Object entity,
boolean cascadeDeleteEnabled,
EntityPersister persister,
Set transientEntities) {
LOG.handlingTransientEntity();
if (transientEntities.contains(entity)) {
LOG.trace("Already handled transient entity; skipping");
return;
}
transientEntities.add(entity);
cascadeBeforeDelete(session, persister, entity, null, transientEntities);
cascadeAfterDelete(session, persister, entity, transientEntities);
}
/**
* Coordinates the processing necessary to get things ready for executions as db calls by preping
* the session caches and moving the appropriate entities and collections to their respective
* execution queues.
*
* @param event The flush event.
* @throws HibernateException Error flushing caches to execution queues.
*/
protected void flushEverythingToExecutions(FlushEvent event) throws HibernateException {
LOG.trace("Flushing session");
EventSource session = event.getSession();
final PersistenceContext persistenceContext = session.getPersistenceContext();
session.getInterceptor().preFlush(new LazyIterator(persistenceContext.getEntitiesByKey()));
prepareEntityFlushes(session, persistenceContext);
// we could move this inside if we wanted to
// tolerate collection initializations during
// collection dirty checking:
prepareCollectionFlushes(persistenceContext);
// now, any collections that are initialized
// inside this block do not get updated - they
// are ignored until the next flush
persistenceContext.setFlushing(true);
try {
int entityCount = flushEntities(event, persistenceContext);
int collectionCount = flushCollections(session, persistenceContext);
event.setNumberOfEntitiesProcessed(entityCount);
event.setNumberOfCollectionsProcessed(collectionCount);
} finally {
persistenceContext.setFlushing(false);
}
// some statistics
logFlushResults(event);
}
/**
* 1. Recreate the collection key -> collection map 2. rebuild the collection entries 3. call
* Interceptor.postFlush()
*/
protected void postFlush(SessionImplementor session) throws HibernateException {
LOG.trace("Post flush");
final PersistenceContext persistenceContext = session.getPersistenceContext();
persistenceContext.getCollectionsByKey().clear();
// the database has changed now, so the subselect results need to be invalidated
// the batch fetching queues should also be cleared - especially the collection batch fetching
// one
persistenceContext.getBatchFetchQueue().clear();
for (Map.Entry<PersistentCollection, CollectionEntry> me :
IdentityMap.concurrentEntries(persistenceContext.getCollectionEntries())) {
CollectionEntry collectionEntry = me.getValue();
PersistentCollection persistentCollection = me.getKey();
collectionEntry.postFlush(persistentCollection);
if (collectionEntry.getLoadedPersister() == null) {
// if the collection is dereferenced, unset its session reference and remove from the
// session cache
// iter.remove(); //does not work, since the entrySet is not backed by the set
persistentCollection.unsetSession(session);
persistenceContext.getCollectionEntries().remove(persistentCollection);
} else {
// otherwise recreate the mapping between the collection and its key
CollectionKey collectionKey =
new CollectionKey(collectionEntry.getLoadedPersister(), collectionEntry.getLoadedKey());
persistenceContext.getCollectionsByKey().put(collectionKey, persistentCollection);
}
}
}
