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hibernate-orm
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HHH-1775

This commit is contained in:
Guenther Demetz 2012-05-14 14:49:38 +02:00 committed by Steve Ebersole
parent e4fbe2fc99
commit 7cecc68fb1
9 changed files with 119 additions and 50 deletions
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3
hibernate-core/src/main/java/org/hibernate/engine/internal/StatefulPersistenceContext.java
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@ -896,6 +896,9 @@ public class StatefulPersistenceContext implements PersistenceContext {
public void addUninitializedCollection(CollectionPersister persister, PersistentCollection collection, Serializable id) {
CollectionEntry ce = new CollectionEntry(collection, persister, id, flushing);
addCollection(collection, ce, id);
if (persister.getBatchSize() > 1) {
batchFetchQueue.addBatchLoadableCollection(collection, ce);
}
}
/**

5
hibernate-core/src/main/java/org/hibernate/engine/loading/internal/CollectionLoadContext.java
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@ -251,8 +251,13 @@ public class CollectionLoadContext {
}
else {
ce.postInitialize( lce.getCollection() );
// if (ce.getLoadedPersister().getBatchSize() > 1) { // not the best place for doing this, moved into ce.postInitialize
// getLoadContext().getPersistenceContext().getBatchFetchQueue().removeBatchLoadableCollection(ce);
// }
}
boolean addToCache = hasNoQueuedAdds && // there were no queued additions
persister.hasCache() && // and the role has a cache
session.getCacheMode().isPutEnabled() &&

87
hibernate-core/src/main/java/org/hibernate/engine/spi/BatchFetchQueue.java
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@ -27,15 +27,19 @@ import java.io.Serializable;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Map.Entry;
import org.hibernate.EntityMode;
import org.hibernate.cache.spi.CacheKey;
import org.hibernate.collection.spi.PersistentCollection;
import org.hibernate.internal.CoreMessageLogger;
import org.hibernate.internal.util.MarkerObject;
import org.hibernate.internal.util.collections.IdentityMap;
import org.hibernate.persister.collection.CollectionPersister;
import org.hibernate.persister.entity.EntityPersister;
import org.jboss.logging.Logger;
/**
* Tracks entity and collection keys that are available for batch
@ -46,19 +50,21 @@ import org.hibernate.persister.entity.EntityPersister;
*/
public class BatchFetchQueue {
public static final Object MARKER = new MarkerObject( "MARKER" );
private static final CoreMessageLogger LOG = Logger.getMessageLogger( CoreMessageLogger.class, BatchFetchQueue.class.getName() );
/**
* Defines a sequence of {@link EntityKey} elements that are currently
* elegible for batch-fetching.
* <p/>
* Even though this is a map, we only use the keys. A map was chosen in
* order to utilize a {@link LinkedHashMap} to maintain sequencing
* as well as uniqueness.
* utilize a {@link LinkedHashMap} to maintain sequencing as well as uniqueness.
* <p/>
* TODO : this would be better as a SequencedReferenceSet, but no such beast exists!
*/
private final Map batchLoadableEntityKeys = new LinkedHashMap(8);
private final Map <String,LinkedHashSet<EntityKey>> batchLoadableEntityKeys = new HashMap <String,LinkedHashSet<EntityKey>>(8);
/**
* cannot use PersistentCollection as keym because PersistentSet.hashCode() would force initialization immediately
*/
private final Map <CollectionPersister, LinkedHashMap <CollectionEntry, PersistentCollection>> batchLoadableCollections = new HashMap <CollectionPersister, LinkedHashMap <CollectionEntry, PersistentCollection>>(8);
/**
* A map of {@link SubselectFetch subselect-fetch descriptors} keyed by the
@ -85,6 +91,7 @@ public class BatchFetchQueue {
*/
public void clear() {
batchLoadableEntityKeys.clear();
batchLoadableCollections.clear();
subselectsByEntityKey.clear();
}
@ -140,17 +147,54 @@ public class BatchFetchQueue {
*/
public void addBatchLoadableEntityKey(EntityKey key) {
if ( key.isBatchLoadable() ) {
batchLoadableEntityKeys.put( key, MARKER );
LinkedHashSet<EntityKey> set = batchLoadableEntityKeys.get( key.getEntityName());
if (set == null) {
set = new LinkedHashSet<EntityKey>(8);
batchLoadableEntityKeys.put( key.getEntityName(), set);
}
set.add(key);
}
}
/**
* After evicting or deleting or loading an entity, we don't
* need to batch fetch it anymore, remove it from the queue
* if necessary
*/
public void removeBatchLoadableEntityKey(EntityKey key) {
if ( key.isBatchLoadable() ) batchLoadableEntityKeys.remove(key);
if ( key.isBatchLoadable() ) {
LinkedHashSet<EntityKey> set = batchLoadableEntityKeys.get( key.getEntityName());
if (set != null) {
set.remove(key);
}
}
}
/**
* If an CollectionEntry represents a batch loadable collection, add
* it to the queue.
*/
public void addBatchLoadableCollection(PersistentCollection collection, CollectionEntry ce) {
LinkedHashMap<CollectionEntry, PersistentCollection> map = batchLoadableCollections.get( ce.getLoadedPersister());
if (map == null) {
map = new LinkedHashMap<CollectionEntry, PersistentCollection>(8);
batchLoadableCollections.put( ce.getLoadedPersister(), map);
}
map.put(ce, collection);
}
/**
* After a collection was initialized or evicted, we don't
* need to batch fetch it anymore, remove it from the queue
* if necessary
*/
public void removeBatchLoadableCollection(CollectionEntry ce) {
LinkedHashMap<CollectionEntry, PersistentCollection> map = batchLoadableCollections.get( ce.getLoadedPersister());
if (map != null) {
map.remove(ce);
}
}
/**
@ -171,16 +215,12 @@ public class BatchFetchQueue {
//int count = 0;
int end = -1;
boolean checkForEnd = false;
// this only works because collection entries are kept in a sequenced
// map by persistence context (maybe we should do like entities and
// keep a separate sequences set...)
for ( Map.Entry<PersistentCollection,CollectionEntry> me :
IdentityMap.concurrentEntries( (Map<PersistentCollection,CollectionEntry>) context.getCollectionEntries() )) {
CollectionEntry ce = me.getValue();
PersistentCollection collection = me.getKey();
if ( !collection.wasInitialized() && ce.getLoadedPersister() == collectionPersister ) {
LinkedHashMap<CollectionEntry, PersistentCollection> map = batchLoadableCollections.get(collectionPersister);
if (map != null) {
for (Entry<CollectionEntry, PersistentCollection> me : map.entrySet()) {
CollectionEntry ce = me.getKey();
PersistentCollection collection = me.getValue();
if ( !collection.wasInitialized() ) { // should always be true
if ( checkForEnd && i == end ) {
return keys; //the first key found after the given key
@ -210,8 +250,12 @@ public class BatchFetchQueue {
}
}
}
else {
LOG.warn("Encountered initialized collection in BatchFetchQueue, this should not happen.");
}
}
}
return keys; //we ran out of keys to try
}
@ -236,10 +280,9 @@ public class BatchFetchQueue {
int end = -1;
boolean checkForEnd = false;
Iterator iter = batchLoadableEntityKeys.keySet().iterator();
while ( iter.hasNext() ) {
EntityKey key = (EntityKey) iter.next();
if ( key.getEntityName().equals( persister.getEntityName() ) ) { //TODO: this needn't exclude subclasses...
LinkedHashSet<EntityKey> set = batchLoadableEntityKeys.get( persister.getEntityName() ); //TODO: this needn't exclude subclasses...
if (set != null) {
for (EntityKey key : set) {
if ( checkForEnd && i == end ) {
//the first id found after the given id
return ids;

4
hibernate-core/src/main/java/org/hibernate/engine/spi/CollectionEntry.java
View File

@ -34,6 +34,7 @@ import org.jboss.logging.Logger;
import org.hibernate.AssertionFailure;
import org.hibernate.HibernateException;
import org.hibernate.MappingException;
import org.hibernate.collection.internal.AbstractPersistentCollection;
import org.hibernate.collection.spi.PersistentCollection;
import org.hibernate.internal.CoreMessageLogger;
import org.hibernate.persister.collection.CollectionPersister;
@ -215,6 +216,9 @@ public final class CollectionEntry implements Serializable {
collection.getSnapshot( getLoadedPersister() ) :
null;
collection.setSnapshot(loadedKey, role, snapshot);
if (getLoadedPersister().getBatchSize() > 1) {
((AbstractPersistentCollection) collection).getSession().getPersistenceContext().getBatchFetchQueue().removeBatchLoadableCollection(this);
}
}
/**

3
hibernate-core/src/main/java/org/hibernate/event/internal/EvictVisitor.java
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@ -83,6 +83,9 @@ public class EvictVisitor extends AbstractVisitor {
ce.getLoadedKey(),
getSession() ) );
}
if (ce.getLoadedPersister() != null && ce.getLoadedPersister().getBatchSize() > 1) {
getSession().getPersistenceContext().getBatchFetchQueue().removeBatchLoadableCollection(ce);
}
if ( ce.getLoadedPersister() != null && ce.getLoadedKey() != null ) {
//TODO: is this 100% correct?
getSession().getPersistenceContext().getCollectionsByKey().remove(

5
hibernate-core/src/main/java/org/hibernate/persister/collection/AbstractCollectionPersister.java
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@ -1913,6 +1913,10 @@ public abstract class AbstractCollectionPersister
return initializer;
}
public int getBatchSize() {
return batchSize;
}
private class StandardOrderByAliasResolver implements OrderByAliasResolver {
private final String rootAlias;
@ -1933,4 +1937,5 @@ public abstract class AbstractCollectionPersister
}
public abstract FilterAliasGenerator getFilterAliasGenerator(final String rootAlias);
}

1
hibernate-core/src/main/java/org/hibernate/persister/collection/CollectionPersister.java
View File

@ -307,4 +307,5 @@ public interface CollectionPersister {
public boolean indexExists(Serializable key, Object index, SessionImplementor session);
public boolean elementExists(Serializable key, Object element, SessionImplementor session);
public Object getElementByIndex(Serializable key, Object index, SessionImplementor session, Object owner);
public int getBatchSize();
}

2
hibernate-core/src/main/java/org/hibernate/type/ManyToOneType.java
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@ -169,7 +169,7 @@ public class ManyToOneType extends EntityType {
if ( uniqueKeyPropertyName == null && id != null ) {
final EntityPersister persister = session.getFactory().getEntityPersister( getAssociatedEntityName() );
final EntityKey entityKey = session.generateEntityKey( id, persister );
if ( !session.getPersistenceContext().containsEntity( entityKey ) ) {
if ( entityKey.isBatchLoadable() && !session.getPersistenceContext().containsEntity( entityKey ) ) {
session.getPersistenceContext().getBatchFetchQueue().addBatchLoadableEntityKey( entityKey );
}
}

5
hibernate-core/src/test/java/org/hibernate/test/cfg/persister/GoofyPersisterClassProvider.java
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@ -802,5 +802,10 @@ public class GoofyPersisterClassProvider implements PersisterClassResolver {
public Object getElementByIndex(Serializable key, Object index, SessionImplementor session, Object owner) {
return null; //To change body of implemented methods use File | Settings | File Templates.
}
@Override
public int getBatchSize() {
return 0;
}
}
}