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HHH-9265 - Extract EntityEntry behind a factory + interface

This commit is contained in:
John O'Hara 2015-03-20 16:27:06 +00:00 committed by Steve Ebersole
parent f295d66d6e
commit 5c4dacb83e
10 changed files with 912 additions and 590 deletions
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61
hibernate-core/src/main/java/org/hibernate/engine/internal/DefaultEntityEntryFactory.java Normal file
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@ -0,0 +1,61 @@
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2015, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.engine.internal;
import java.io.Serializable;
import org.hibernate.LockMode;
import org.hibernate.engine.spi.EntityEntry;
import org.hibernate.engine.spi.EntityEntryFactory;
import org.hibernate.engine.spi.PersistenceContext;
import org.hibernate.engine.spi.Status;
import org.hibernate.persister.entity.EntityPersister;
/**
* Factory for the safe approach implementation of {@link org.hibernate.engine.spi.EntityEntry}.
* <p>
* Smarter implementations could store less state.
*
* @author Emmanuel Bernard <emmanuel@hibernate.org>
*/
public class DefaultEntityEntryFactory implements EntityEntryFactory {
@Override
public EntityEntry createEntityEntry(Status status, Object[] loadedState, Object rowId, Serializable id, Object version, LockMode lockMode, boolean existsInDatabase, EntityPersister persister, boolean disableVersionIncrement, boolean lazyPropertiesAreUnfetched, PersistenceContext persistenceContext) {
return new MutableEntityEntry(
status,
loadedState,
rowId,
id,
version,
lockMode,
existsInDatabase,
persister,
disableVersionIncrement,
lazyPropertiesAreUnfetched,
persistenceContext
);
}
}

2
hibernate-core/src/main/java/org/hibernate/engine/internal/EntityEntryContext.java
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@ -366,7 +366,7 @@ public class EntityEntryContext {
for ( int i = 0; i < count; i++ ) { for ( int i = 0; i < count; i++ ) {
final boolean isEnhanced = ois.readBoolean(); final boolean isEnhanced = ois.readBoolean();
final Object entity = ois.readObject(); final Object entity = ois.readObject();
final EntityEntry entry = EntityEntry.deserialize( ois, rtn ); final EntityEntry entry = MutableEntityEntry.deserialize(ois, rtn);
final ManagedEntity managedEntity; final ManagedEntity managedEntity;
if ( isEnhanced ) { if ( isEnhanced ) {
managedEntity = (ManagedEntity) entity; managedEntity = (ManagedEntity) entity;

57
hibernate-core/src/main/java/org/hibernate/engine/internal/EntityEntryFactoryInitiator.java Normal file
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@ -0,0 +1,57 @@
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2015, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.engine.internal;
import org.hibernate.SessionFactory;
import org.hibernate.engine.spi.EntityEntryFactory;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.service.spi.ServiceRegistryImplementor;
import org.hibernate.service.spi.SessionFactoryServiceInitiator;
/**
* Standard initiator for the {@link org.hibernate.engine.spi.EntityEntryFactory}.
* <p>
* Implementation note:
* A {@link org.hibernate.service.spi.SessionFactoryServiceInitiator} is used to allow
* overriding implementations to depend on session factory level services:
* OGM datastore provider is an example.
* TODO: make sure it is required to be a SessionFactoryServiceInitiator
*
* @author Emmanuel Bernard <emmanuel@hibernate.org>
*/
public class EntityEntryFactoryInitiator implements SessionFactoryServiceInitiator<EntityEntryFactory> {
public static final EntityEntryFactoryInitiator INSTANCE = new EntityEntryFactoryInitiator();
@Override
public EntityEntryFactory initiateService(SessionFactoryImplementor sessionFactory, SessionFactory.SessionFactoryOptions sessionFactoryOptions, ServiceRegistryImplementor registry) {
return new DefaultEntityEntryFactory();
}
@Override
public Class<EntityEntryFactory> getServiceInitiated() {
return EntityEntryFactory.class;
}
}

697
hibernate-core/src/main/java/org/hibernate/engine/internal/MutableEntityEntry.java Normal file
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@ -0,0 +1,697 @@
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2010-2015, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.engine.internal;
import org.hibernate.AssertionFailure;
import org.hibernate.CustomEntityDirtinessStrategy;
import org.hibernate.EntityMode;
import org.hibernate.HibernateException;
import org.hibernate.LockMode;
import org.hibernate.Session;
import org.hibernate.bytecode.instrumentation.spi.FieldInterceptor;
import org.hibernate.engine.spi.CachedNaturalIdValueSource;
import org.hibernate.engine.spi.EntityEntry;
import org.hibernate.engine.spi.EntityEntryExtraState;
import org.hibernate.engine.spi.EntityKey;
import org.hibernate.engine.spi.PersistenceContext;
import org.hibernate.engine.spi.SelfDirtinessTracker;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.engine.spi.Status;
import org.hibernate.persister.entity.EntityPersister;
import org.hibernate.persister.entity.UniqueKeyLoadable;
import org.hibernate.pretty.MessageHelper;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
/**
* We need an entry to tell us all about the current state of an mutable object with respect to its persistent state
*
* Implementation Warning: Hibernate needs to instantiate a high amount of instances of this class,
* therefore we need to take care of its impact on memory consumption.
*
* @author Gavin King
* @author Emmanuel Bernard <emmanuel@hibernate.org>
* @author Gunnar Morling
* @author Sanne Grinovero <sanne@hibernate.org>
*/
public final class MutableEntityEntry implements Serializable, EntityEntry {
private final Serializable id;
private Object[] loadedState;
private Object version;
private final EntityPersister persister; // permanent but we only need the entityName state in a non transient way
private transient EntityKey cachedEntityKey; // cached EntityKey (lazy-initialized)
private final transient Object rowId;
private final transient PersistenceContext persistenceContext;
private EntityEntryExtraState next;
/**
* Holds several boolean and enum typed attributes in a very compact manner. Enum values are stored in 4 bits
* (where 0 represents {@code null}, and each enum value is represented by its ordinal value + 1), thus allowing
* for up to 15 values per enum. Boolean values are stored in one bit.
* <p>
* The value is structured as follows:
*
* <pre>
* 1 - Lock mode
* 2 - Status
* 3 - Previous Status
* 4 - existsInDatabase
* 5 - isBeingReplicated
* 6 - loadedWithLazyPropertiesUnfetched; NOTE: this is not updated when properties are fetched lazily!
*
* 0000 0000 | 0000 0000 | 0654 3333 | 2222 1111
* </pre>
* Use {@link #setCompressedValue(MutableEntityEntry.EnumState, Enum)},
* {@link #getCompressedValue(MutableEntityEntry.EnumState, Class)} etc
* to access the enums and booleans stored in this value.
* <p>
* Representing enum values by their ordinal value is acceptable for our case as this value itself is never
* serialized or deserialized and thus is not affected should ordinal values change.
*/
private transient int compressedState;
/**
* @deprecated the tenantId and entityMode parameters where removed: this constructor accepts but ignores them.
* Use the other constructor!
*/
@Deprecated
public MutableEntityEntry(
final Status status,
final Object[] loadedState,
final Object rowId,
final Serializable id,
final Object version,
final LockMode lockMode,
final boolean existsInDatabase,
final EntityPersister persister,
final EntityMode entityMode,
final String tenantId,
final boolean disableVersionIncrement,
final boolean lazyPropertiesAreUnfetched,
final PersistenceContext persistenceContext) {
this( status, loadedState, rowId, id, version, lockMode, existsInDatabase,
persister,disableVersionIncrement, lazyPropertiesAreUnfetched, persistenceContext );
}
public MutableEntityEntry(
final Status status,
final Object[] loadedState,
final Object rowId,
final Serializable id,
final Object version,
final LockMode lockMode,
final boolean existsInDatabase,
final EntityPersister persister,
final boolean disableVersionIncrement,
final boolean lazyPropertiesAreUnfetched,
final PersistenceContext persistenceContext) {
setCompressedValue( EnumState.STATUS, status );
// not useful strictly speaking but more explicit
setCompressedValue( EnumState.PREVIOUS_STATUS, null );
// only retain loaded state if the status is not Status.READ_ONLY
if ( status != Status.READ_ONLY ) {
this.loadedState = loadedState;
}
this.id=id;
this.rowId=rowId;
setCompressedValue( BooleanState.EXISTS_IN_DATABASE, existsInDatabase );
this.version=version;
setCompressedValue( EnumState.LOCK_MODE, lockMode );
setCompressedValue( BooleanState.IS_BEING_REPLICATED, disableVersionIncrement );
setCompressedValue( BooleanState.LOADED_WITH_LAZY_PROPERTIES_UNFETCHED, lazyPropertiesAreUnfetched );
this.persister=persister;
this.persistenceContext = persistenceContext;
}
/**
* This for is used during custom deserialization handling
*/
@SuppressWarnings( {"JavaDoc"})
private MutableEntityEntry(
final SessionFactoryImplementor factory,
final String entityName,
final Serializable id,
final Status status,
final Status previousStatus,
final Object[] loadedState,
final Object[] deletedState,
final Object version,
final LockMode lockMode,
final boolean existsInDatabase,
final boolean isBeingReplicated,
final boolean loadedWithLazyPropertiesUnfetched,
final PersistenceContext persistenceContext) {
this.persister = ( factory == null ? null : factory.getEntityPersister( entityName ) );
this.id = id;
setCompressedValue( EnumState.STATUS, status );
setCompressedValue( EnumState.PREVIOUS_STATUS, previousStatus );
this.loadedState = loadedState;
setDeletedState( deletedState );
this.version = version;
setCompressedValue( EnumState.LOCK_MODE, lockMode );
setCompressedValue( BooleanState.EXISTS_IN_DATABASE, existsInDatabase );
setCompressedValue( BooleanState.IS_BEING_REPLICATED, isBeingReplicated );
setCompressedValue( BooleanState.LOADED_WITH_LAZY_PROPERTIES_UNFETCHED, loadedWithLazyPropertiesUnfetched );
this.rowId = null; // this is equivalent to the old behavior...
this.persistenceContext = persistenceContext;
}
@Override
public LockMode getLockMode() {
return getCompressedValue( EnumState.LOCK_MODE );
}
@Override
public void setLockMode(LockMode lockMode) {
setCompressedValue( EnumState.LOCK_MODE, lockMode );
}
@Override
public Status getStatus() {
return getCompressedValue( EnumState.STATUS );
}
private Status getPreviousStatus() {
return getCompressedValue( EnumState.PREVIOUS_STATUS );
}
@Override
public void setStatus(Status status) {
if ( status == Status.READ_ONLY ) {
//memory optimization
loadedState = null;
}
Status currentStatus = this.getStatus();
if ( currentStatus != status ) {
setCompressedValue( EnumState.PREVIOUS_STATUS, currentStatus );
setCompressedValue( EnumState.STATUS, status );
}
}
@Override
public Serializable getId() {
return id;
}
@Override
public Object[] getLoadedState() {
return loadedState;
}
private static final Object[] DEFAULT_DELETED_STATE = null;
@Override
public Object[] getDeletedState() {
EntityEntryExtraStateHolder extra = getExtraState( EntityEntryExtraStateHolder.class );
return extra != null ? extra.getDeletedState() : DEFAULT_DELETED_STATE;
}
@Override
public void setDeletedState(Object[] deletedState) {
EntityEntryExtraStateHolder extra = getExtraState( EntityEntryExtraStateHolder.class );
if ( extra == null && deletedState == DEFAULT_DELETED_STATE ) {
//this is the default value and we do not store the extra state
return;
}
if ( extra == null ) {
extra = new EntityEntryExtraStateHolder();
addExtraState( extra );
}
extra.setDeletedState( deletedState );
}
@Override
public boolean isExistsInDatabase() {
return getCompressedValue( BooleanState.EXISTS_IN_DATABASE );
}
@Override
public Object getVersion() {
return version;
}
@Override
public EntityPersister getPersister() {
return persister;
}
@Override
public EntityKey getEntityKey() {
if ( cachedEntityKey == null ) {
if ( getId() == null ) {
throw new IllegalStateException( "cannot generate an EntityKey when id is null.");
}
cachedEntityKey = new EntityKey( getId(), getPersister() );
}
return cachedEntityKey;
}
@Override
public String getEntityName() {
return persister == null ? null : persister.getEntityName();
}
@Override
public boolean isBeingReplicated() {
return getCompressedValue( BooleanState.IS_BEING_REPLICATED );
}
@Override
public Object getRowId() {
return rowId;
}
@Override
public void postUpdate(Object entity, Object[] updatedState, Object nextVersion) {
this.loadedState = updatedState;
setLockMode( LockMode.WRITE );
if ( getPersister().isVersioned() ) {
this.version = nextVersion;
getPersister().setPropertyValue( entity, getPersister().getVersionProperty(), nextVersion );
}
if ( getPersister().getInstrumentationMetadata().isInstrumented() ) {
final FieldInterceptor interceptor = getPersister().getInstrumentationMetadata().extractInterceptor( entity );
if ( interceptor != null ) {
interceptor.clearDirty();
}
}
if( entity instanceof SelfDirtinessTracker ) {
((SelfDirtinessTracker) entity).$$_hibernate_clearDirtyAttributes();
}
persistenceContext.getSession()
.getFactory()
.getCustomEntityDirtinessStrategy()
.resetDirty( entity, getPersister(), (Session) persistenceContext.getSession() );
}
@Override
public void postDelete() {
setCompressedValue( EnumState.PREVIOUS_STATUS, getStatus() );
setCompressedValue( EnumState.STATUS, Status.GONE );
setCompressedValue( BooleanState.EXISTS_IN_DATABASE, false );
}
@Override
public void postInsert(Object[] insertedState) {
setCompressedValue( BooleanState.EXISTS_IN_DATABASE, true );
}
@Override
public boolean isNullifiable(boolean earlyInsert, SessionImplementor session) {
if ( getStatus() == Status.SAVING ) {
return true;
}
else if ( earlyInsert ) {
return !isExistsInDatabase();
}
else {
return session.getPersistenceContext().getNullifiableEntityKeys().contains( getEntityKey() );
}
}
@Override
public Object getLoadedValue(String propertyName) {
if ( loadedState == null || propertyName == null ) {
return null;
}
else {
int propertyIndex = ( (UniqueKeyLoadable) persister ).getPropertyIndex( propertyName );
return loadedState[propertyIndex];
}
}
@Override
public boolean requiresDirtyCheck(Object entity) {
return isModifiableEntity()
&& ( !isUnequivocallyNonDirty( entity ) );
}
@SuppressWarnings( {"SimplifiableIfStatement"})
private boolean isUnequivocallyNonDirty(Object entity) {
if(entity instanceof SelfDirtinessTracker)
return ((SelfDirtinessTracker) entity).$$_hibernate_hasDirtyAttributes();
final CustomEntityDirtinessStrategy customEntityDirtinessStrategy =
persistenceContext.getSession().getFactory().getCustomEntityDirtinessStrategy();
if ( customEntityDirtinessStrategy.canDirtyCheck( entity, getPersister(), (Session) persistenceContext.getSession() ) ) {
return ! customEntityDirtinessStrategy.isDirty( entity, getPersister(), (Session) persistenceContext.getSession() );
}
if ( getPersister().hasMutableProperties() ) {
return false;
}
if ( getPersister().getInstrumentationMetadata().isInstrumented() ) {
// the entity must be instrumented (otherwise we cant check dirty flag) and the dirty flag is false
return ! getPersister().getInstrumentationMetadata().extractInterceptor( entity ).isDirty();
}
return false;
}
@Override
public boolean isModifiableEntity() {
Status status = getStatus();
Status previousStatus = getPreviousStatus();
return getPersister().isMutable()
&& status != Status.READ_ONLY
&& ! ( status == Status.DELETED && previousStatus == Status.READ_ONLY );
}
@Override
public void forceLocked(Object entity, Object nextVersion) {
version = nextVersion;
loadedState[ persister.getVersionProperty() ] = version;
// TODO: use LockMode.PESSIMISTIC_FORCE_INCREMENT
//noinspection deprecation
setLockMode( LockMode.FORCE );
persister.setPropertyValue( entity, getPersister().getVersionProperty(), nextVersion );
}
@Override
public boolean isReadOnly() {
Status status = getStatus();
if (status != Status.MANAGED && status != Status.READ_ONLY) {
throw new HibernateException("instance was not in a valid state");
}
return status == Status.READ_ONLY;
}
@Override
public void setReadOnly(boolean readOnly, Object entity) {
if ( readOnly == isReadOnly() ) {
// simply return since the status is not being changed
return;
}
if ( readOnly ) {
setStatus( Status.READ_ONLY );
loadedState = null;
}
else {
if ( ! persister.isMutable() ) {
throw new IllegalStateException( "Cannot make an immutable entity modifiable." );
}
setStatus( Status.MANAGED );
loadedState = getPersister().getPropertyValues( entity );
persistenceContext.getNaturalIdHelper().manageLocalNaturalIdCrossReference(
persister,
id,
loadedState,
null,
CachedNaturalIdValueSource.LOAD
);
}
}
@Override
public String toString() {
return "EntityEntry" +
MessageHelper.infoString( getPersister().getEntityName(), id ) +
'(' + getStatus() + ')';
}
@Override
public boolean isLoadedWithLazyPropertiesUnfetched() {
return getCompressedValue( BooleanState.LOADED_WITH_LAZY_PROPERTIES_UNFETCHED );
}
@Override
public void serialize(ObjectOutputStream oos) throws IOException {
Status previousStatus = getPreviousStatus();
oos.writeObject( getEntityName() );
oos.writeObject( id );
oos.writeObject( getStatus().name() );
oos.writeObject( (previousStatus == null ? "" : previousStatus.name()) );
// todo : potentially look at optimizing these two arrays
oos.writeObject( loadedState );
oos.writeObject( getDeletedState() );
oos.writeObject( version );
oos.writeObject( getLockMode().toString() );
oos.writeBoolean( isExistsInDatabase() );
oos.writeBoolean( isBeingReplicated() );
oos.writeBoolean( isLoadedWithLazyPropertiesUnfetched() );
}
/**
* Custom deserialization routine used during deserialization of a
* Session/PersistenceContext for increased performance.
*
* @param ois The stream from which to read the entry.
* @param persistenceContext The context being deserialized.
*
* @return The deserialized EntityEntry
*
* @throws java.io.IOException If a stream error occurs
* @throws ClassNotFoundException If any of the classes declared in the stream
* cannot be found
*/
public static EntityEntry deserialize(
ObjectInputStream ois,
PersistenceContext persistenceContext) throws IOException, ClassNotFoundException {
String previousStatusString;
return new MutableEntityEntry(
persistenceContext.getSession().getFactory(),
(String) ois.readObject(),
(Serializable) ois.readObject(),
Status.valueOf( (String) ois.readObject() ),
( previousStatusString = (String) ois.readObject() ).length() == 0
? null
: Status.valueOf( previousStatusString ),
(Object[]) ois.readObject(),
(Object[]) ois.readObject(),
ois.readObject(),
LockMode.valueOf( (String) ois.readObject() ),
ois.readBoolean(),
ois.readBoolean(),
ois.readBoolean(),
persistenceContext
);
}
@Override
public void addExtraState(EntityEntryExtraState extraState) {
if ( next == null ) {
next = extraState;
}
else {
next.addExtraState( extraState );
}
}
@Override
public <T extends EntityEntryExtraState> T getExtraState(Class<T> extraStateType) {
if ( next == null ) {
return null;
}
if ( extraStateType.isAssignableFrom( next.getClass() ) ) {
return (T) next;
}
else {
return next.getExtraState( extraStateType );
}
}
/**
* Saves the value for the given enum property.
*
* @param state
* identifies the value to store
* @param value
* the value to store; The caller must make sure that it matches
* the given identifier
*/
private <E extends Enum<E>> void setCompressedValue(EnumState<E> state, E value) {
// reset the bits for the given property to 0
compressedState &= state.getUnsetMask();
// store the numeric representation of the enum value at the right offset
compressedState |= ( state.getValue( value ) << state.getOffset() );
}
/**
* Gets the current value of the given enum property.
*
* @param state
* identifies the value to store
* @return the current value of the specified property
*/
private <E extends Enum<E>> E getCompressedValue(EnumState<E> state) {
// restore the numeric value from the bits at the right offset and return the corresponding enum constant
int index = ( ( compressedState & state.getMask() ) >> state.getOffset() ) - 1;
return index == - 1 ? null : state.getEnumConstants()[index];
}
/**
* Saves the value for the given boolean flag.
*
* @param state
* identifies the value to store
* @param value
* the value to store
*/
private void setCompressedValue(BooleanState state, boolean value) {
compressedState &= state.getUnsetMask();
compressedState |= ( state.getValue( value ) << state.getOffset() );
}
/**
* Gets the current value of the given boolean flag.
*
* @param state
* identifies the value to store
* @return the current value of the specified flag
*/
private boolean getCompressedValue(BooleanState state) {
return ( ( compressedState & state.getMask() ) >> state.getOffset() ) == 1;
}
/**
* Represents an enum value stored within a number value, using four bits starting at a specified offset.
*
* @author Gunnar Morling
*/
private static class EnumState<E extends Enum<E>> {
private static final EnumState<LockMode> LOCK_MODE = new EnumState<LockMode>( 0, LockMode.class );
private static final EnumState<Status> STATUS = new EnumState<Status>( 4, Status.class );
private static final EnumState<Status> PREVIOUS_STATUS = new EnumState<Status>( 8, Status.class );
private final int offset;
private final E[] enumConstants;
private final int mask;
private final int unsetMask;
private EnumState(int offset, Class<E> enumType) {
E[] enumConstants = enumType.getEnumConstants();
// In case any of the enums cannot be stored in 4 bits anymore, we'd have to re-structure the compressed
// state int
if ( enumConstants.length > 15 ) {
throw new AssertionFailure( "Cannot store enum type " + enumType.getName() + " in compressed state as"
+ " it has too many values." );
}
this.offset = offset;
this.enumConstants = enumConstants;
// a mask for reading the four bits, starting at the right offset
this.mask = 0xF << offset;
// a mask for setting the four bits at the right offset to 0
this.unsetMask = 0xFFFF & ~mask;
}
/**
* Returns the numeric value to be stored for the given enum value.
*/
private int getValue(E value) {
return value != null ? value.ordinal() + 1 : 0;
}
/**
* Returns the offset within the number value at which this enum value is stored.
*/
private int getOffset() {
return offset;
}
/**
* Returns the bit mask for reading this enum value from the number value storing it.
*/
private int getMask() {
return mask;
}
/**
* Returns the bit mask for resetting this enum value from the number value storing it.
*/
private int getUnsetMask() {
return unsetMask;
}
/**
* Returns the constants of the represented enum which is cached for performance reasons.
*/
private E[] getEnumConstants() {
return enumConstants;
}
}
/**
* Represents a boolean flag stored within a number value, using one bit at a specified offset.
*
* @author Gunnar Morling
*/
private enum BooleanState {
EXISTS_IN_DATABASE(13),
IS_BEING_REPLICATED(14),
LOADED_WITH_LAZY_PROPERTIES_UNFETCHED(15);
private final int offset;
private final int mask;
private final int unsetMask;
private BooleanState(int offset) {
this.offset = offset;
this.mask = 0x1 << offset;
this.unsetMask = 0xFFFF & ~mask;
}
private int getValue(boolean value) {
return value ? 1 : 0;
}
/**
* Returns the offset within the number value at which this boolean flag is stored.
*/
private int getOffset() {
return offset;
}
/**
* Returns the bit mask for reading this flag from the number value storing it.
*/
private int getMask() {
return mask;
}
/**
* Returns the bit mask for resetting this flag from the number value storing it.
*/
private int getUnsetMask() {
return unsetMask;
}
}
}

4
hibernate-core/src/main/java/org/hibernate/engine/internal/StatefulPersistenceContext.java
View File

@ -59,6 +59,7 @@ import org.hibernate.engine.spi.CachedNaturalIdValueSource;
import org.hibernate.engine.spi.CollectionEntry; import org.hibernate.engine.spi.CollectionEntry;
import org.hibernate.engine.spi.CollectionKey; import org.hibernate.engine.spi.CollectionKey;
import org.hibernate.engine.spi.EntityEntry; import org.hibernate.engine.spi.EntityEntry;
import org.hibernate.engine.spi.EntityEntryFactory;
import org.hibernate.engine.spi.EntityKey; import org.hibernate.engine.spi.EntityKey;
import org.hibernate.engine.spi.EntityUniqueKey; import org.hibernate.engine.spi.EntityUniqueKey;
import org.hibernate.engine.spi.PersistenceContext; import org.hibernate.engine.spi.PersistenceContext;
@ -489,7 +490,8 @@ public class StatefulPersistenceContext implements PersistenceContext {
final boolean disableVersionIncrement, final boolean disableVersionIncrement,
boolean lazyPropertiesAreUnfetched) { boolean lazyPropertiesAreUnfetched) {
final EntityEntry e = new EntityEntry( EntityEntryFactory entityEntryFactory = session.getFactory().getServiceRegistry().getService( EntityEntryFactory.class );
final EntityEntry e = entityEntryFactory.createEntityEntry(
status, status,
loadedState, loadedState,
rowId, rowId,

616
hibernate-core/src/main/java/org/hibernate/engine/spi/EntityEntry.java
View File

@ -28,17 +28,8 @@ import java.io.ObjectInputStream;
import java.io.ObjectOutputStream; import java.io.ObjectOutputStream;
import java.io.Serializable; import java.io.Serializable;
import org.hibernate.AssertionFailure;
import org.hibernate.CustomEntityDirtinessStrategy;
import org.hibernate.EntityMode;
import org.hibernate.HibernateException;
import org.hibernate.LockMode; import org.hibernate.LockMode;
import org.hibernate.Session;
import org.hibernate.bytecode.instrumentation.spi.FieldInterceptor;
import org.hibernate.engine.internal.EntityEntryExtraStateHolder;
import org.hibernate.persister.entity.EntityPersister; import org.hibernate.persister.entity.EntityPersister;
import org.hibernate.persister.entity.UniqueKeyLoadable;
import org.hibernate.pretty.MessageHelper;
/** /**
* We need an entry to tell us all about the current state of an object with respect to its persistent state * We need an entry to tell us all about the current state of an object with respect to its persistent state
@ -51,225 +42,41 @@ import org.hibernate.pretty.MessageHelper;
* @author Gunnar Morling * @author Gunnar Morling
* @author Sanne Grinovero <sanne@hibernate.org> * @author Sanne Grinovero <sanne@hibernate.org>
*/ */
public final class EntityEntry implements Serializable { public interface EntityEntry {
private final Serializable id; LockMode getLockMode();
private Object[] loadedState;
private Object version;
private final EntityPersister persister; // permanent but we only need the entityName state in a non transient way
private transient EntityKey cachedEntityKey; // cached EntityKey (lazy-initialized)
private final transient Object rowId;
private final transient PersistenceContext persistenceContext;
private EntityEntryExtraState next;
/** void setLockMode(LockMode lockMode);
* Holds several boolean and enum typed attributes in a very compact manner. Enum values are stored in 4 bits
* (where 0 represents {@code null}, and each enum value is represented by its ordinal value + 1), thus allowing
* for up to 15 values per enum. Boolean values are stored in one bit.
* <p>
* The value is structured as follows:
*
* <pre>
* 1 - Lock mode
* 2 - Status
* 3 - Previous Status
* 4 - existsInDatabase
* 5 - isBeingReplicated
* 6 - loadedWithLazyPropertiesUnfetched; NOTE: this is not updated when properties are fetched lazily!
*
* 0000 0000 | 0000 0000 | 0654 3333 | 2222 1111
* </pre>
* Use {@link #setCompressedValue(org.hibernate.engine.spi.EntityEntry.EnumState, Enum)},
* {@link #getCompressedValue(org.hibernate.engine.spi.EntityEntry.EnumState, Class)} etc
* to access the enums and booleans stored in this value.
* <p>
* Representing enum values by their ordinal value is acceptable for our case as this value itself is never
* serialized or deserialized and thus is not affected should ordinal values change.
*/
private transient int compressedState;
/** Status getStatus();
* @deprecated the tenantId and entityMode parameters where removed: this constructor accepts but ignores them.
* Use the other constructor!
*/
@Deprecated
public EntityEntry(
final Status status,
final Object[] loadedState,
final Object rowId,
final Serializable id,
final Object version,
final LockMode lockMode,
final boolean existsInDatabase,
final EntityPersister persister,
final EntityMode entityMode,
final String tenantId,
final boolean disableVersionIncrement,
final boolean lazyPropertiesAreUnfetched,
final PersistenceContext persistenceContext) {
this( status, loadedState, rowId, id, version, lockMode, existsInDatabase,
persister,disableVersionIncrement, lazyPropertiesAreUnfetched, persistenceContext );
}
public EntityEntry( void setStatus(Status status);
final Status status,
final Object[] loadedState,
final Object rowId,
final Serializable id,
final Object version,
final LockMode lockMode,
final boolean existsInDatabase,
final EntityPersister persister,
final boolean disableVersionIncrement,
final boolean lazyPropertiesAreUnfetched,
final PersistenceContext persistenceContext) {
setCompressedValue( EnumState.STATUS, status );
// not useful strictly speaking but more explicit
setCompressedValue( EnumState.PREVIOUS_STATUS, null );
// only retain loaded state if the status is not Status.READ_ONLY
if ( status != Status.READ_ONLY ) {
this.loadedState = loadedState;
}
this.id=id;
this.rowId=rowId;
setCompressedValue( BooleanState.EXISTS_IN_DATABASE, existsInDatabase );
this.version=version;
setCompressedValue( EnumState.LOCK_MODE, lockMode );
setCompressedValue( BooleanState.IS_BEING_REPLICATED, disableVersionIncrement );
setCompressedValue( BooleanState.LOADED_WITH_LAZY_PROPERTIES_UNFETCHED, lazyPropertiesAreUnfetched );
this.persister=persister;
this.persistenceContext = persistenceContext;
}
/** Serializable getId();
* This for is used during custom deserialization handling
*/
@SuppressWarnings( {"JavaDoc"})
private EntityEntry(
final SessionFactoryImplementor factory,
final String entityName,
final Serializable id,
final Status status,
final Status previousStatus,
final Object[] loadedState,
final Object[] deletedState,
final Object version,
final LockMode lockMode,
final boolean existsInDatabase,
final boolean isBeingReplicated,
final boolean loadedWithLazyPropertiesUnfetched,
final PersistenceContext persistenceContext) {
this.persister = ( factory == null ? null : factory.getEntityPersister( entityName ) );
this.id = id;
setCompressedValue( EnumState.STATUS, status );
setCompressedValue( EnumState.PREVIOUS_STATUS, previousStatus );
this.loadedState = loadedState;
setDeletedState( deletedState );
this.version = version;
setCompressedValue( EnumState.LOCK_MODE, lockMode );
setCompressedValue( BooleanState.EXISTS_IN_DATABASE, existsInDatabase );
setCompressedValue( BooleanState.IS_BEING_REPLICATED, isBeingReplicated );
setCompressedValue( BooleanState.LOADED_WITH_LAZY_PROPERTIES_UNFETCHED, loadedWithLazyPropertiesUnfetched );
this.rowId = null; // this is equivalent to the old behavior...
this.persistenceContext = persistenceContext;
}
public LockMode getLockMode() { Object[] getLoadedState();
return getCompressedValue( EnumState.LOCK_MODE );
}
public void setLockMode(LockMode lockMode) { Object[] getDeletedState();
setCompressedValue( EnumState.LOCK_MODE, lockMode );
}
public Status getStatus() { void setDeletedState(Object[] deletedState);
return getCompressedValue( EnumState.STATUS );
}
private Status getPreviousStatus() { boolean isExistsInDatabase();
return getCompressedValue( EnumState.PREVIOUS_STATUS );
}
public void setStatus(Status status) { Object getVersion();
if ( status == Status.READ_ONLY ) {
//memory optimization
loadedState = null;
}
Status currentStatus = this.getStatus(); EntityPersister getPersister();
if ( currentStatus != status ) {
setCompressedValue( EnumState.PREVIOUS_STATUS, currentStatus );
setCompressedValue( EnumState.STATUS, status );
}
}
public Serializable getId() {
return id;
}
public Object[] getLoadedState() {
return loadedState;
}
private static final Object[] DEFAULT_DELETED_STATE = null;
public Object[] getDeletedState() {
EntityEntryExtraStateHolder extra = getExtraState( EntityEntryExtraStateHolder.class );
return extra != null ? extra.getDeletedState() : DEFAULT_DELETED_STATE;
}
public void setDeletedState(Object[] deletedState) {
EntityEntryExtraStateHolder extra = getExtraState( EntityEntryExtraStateHolder.class );
if ( extra == null && deletedState == DEFAULT_DELETED_STATE ) {
//this is the default value and we do not store the extra state
return;
}
if ( extra == null ) {
extra = new EntityEntryExtraStateHolder();
addExtraState( extra );
}
extra.setDeletedState( deletedState );
}
public boolean isExistsInDatabase() {
return getCompressedValue( BooleanState.EXISTS_IN_DATABASE );
}
public Object getVersion() {
return version;
}
public EntityPersister getPersister() {
return persister;
}
/** /**
* Get the EntityKey based on this EntityEntry. * Get the EntityKey based on this EntityEntry.
* @return the EntityKey * @return the EntityKey
* @throws IllegalStateException if getId() is null * @throws IllegalStateException if getId() is null
*/ */
public EntityKey getEntityKey() { EntityKey getEntityKey();
if ( cachedEntityKey == null ) {
if ( getId() == null ) {
throw new IllegalStateException( "cannot generate an EntityKey when id is null.");
}
cachedEntityKey = new EntityKey( getId(), getPersister() );
}
return cachedEntityKey;
}
public String getEntityName() { String getEntityName();
return persister == null ? null : persister.getEntityName();
} boolean isBeingReplicated();
public boolean isBeingReplicated() { Object getRowId();
return getCompressedValue( BooleanState.IS_BEING_REPLICATED );
}
public Object getRowId() {
return rowId;
}
/** /**
* Handle updating the internal state of the entry after actually performing * Handle updating the internal state of the entry after actually performing
@ -281,71 +88,23 @@ public final class EntityEntry implements Serializable {
* new {@link #getLoadedState() loaded state}. * new {@link #getLoadedState() loaded state}.
* @param nextVersion The new version. * @param nextVersion The new version.
*/ */
public void postUpdate(Object entity, Object[] updatedState, Object nextVersion) { void postUpdate(Object entity, Object[] updatedState, Object nextVersion);
this.loadedState = updatedState;
setLockMode( LockMode.WRITE );
if ( getPersister().isVersioned() ) {
this.version = nextVersion;
getPersister().setPropertyValue( entity, getPersister().getVersionProperty(), nextVersion );
}
if ( getPersister().getInstrumentationMetadata().isInstrumented() ) {
final FieldInterceptor interceptor = getPersister().getInstrumentationMetadata().extractInterceptor( entity );
if ( interceptor != null ) {
interceptor.clearDirty();
}
}
if( entity instanceof SelfDirtinessTracker) {
((SelfDirtinessTracker) entity).$$_hibernate_clearDirtyAttributes();
}
persistenceContext.getSession()
.getFactory()
.getCustomEntityDirtinessStrategy()
.resetDirty( entity, getPersister(), (Session) persistenceContext.getSession() );
}
/** /**
* After actually deleting a row, record the fact that the instance no longer * After actually deleting a row, record the fact that the instance no longer
* exists in the database * exists in the database
*/ */
public void postDelete() { void postDelete();
setCompressedValue( EnumState.PREVIOUS_STATUS, getStatus() );
setCompressedValue( EnumState.STATUS, Status.GONE );
setCompressedValue( BooleanState.EXISTS_IN_DATABASE, false );
}
/** /**
* After actually inserting a row, record the fact that the instance exists on the * After actually inserting a row, record the fact that the instance exists on the
* database (needed for identity-column key generation) * database (needed for identity-column key generation)
*/ */
public void postInsert(Object[] insertedState) { void postInsert(Object[] insertedState);
setCompressedValue( BooleanState.EXISTS_IN_DATABASE, true );
}
public boolean isNullifiable(boolean earlyInsert, SessionImplementor session) { boolean isNullifiable(boolean earlyInsert, SessionImplementor session);
if ( getStatus() == Status.SAVING ) {
return true;
}
else if ( earlyInsert ) {
return !isExistsInDatabase();
}
else {
return session.getPersistenceContext().getNullifiableEntityKeys().contains( getEntityKey() );
}
}
public Object getLoadedValue(String propertyName) { Object getLoadedValue(String propertyName);
if ( loadedState == null || propertyName == null ) {
return null;
}
else {
int propertyIndex = ( (UniqueKeyLoadable) persister ).getPropertyIndex( propertyName );
return loadedState[propertyIndex];
}
}
/** /**
* Not sure this is the best method name, but the general idea here is to return {@code true} if the entity can * Not sure this is the best method name, but the general idea here is to return {@code true} if the entity can
@ -359,34 +118,7 @@ public final class EntityEntry implements Serializable {
* @return {@code true} indicates that the entity could possibly be dirty and that dirty check * @return {@code true} indicates that the entity could possibly be dirty and that dirty check
* should happen; {@code false} indicates there is no way the entity can be dirty * should happen; {@code false} indicates there is no way the entity can be dirty
*/ */
public boolean requiresDirtyCheck(Object entity) { boolean requiresDirtyCheck(Object entity);
return isModifiableEntity()
&& ( !isUnequivocallyNonDirty( entity ) );
}
@SuppressWarnings( {"SimplifiableIfStatement"})
private boolean isUnequivocallyNonDirty(Object entity) {
if(entity instanceof SelfDirtinessTracker)
return ((SelfDirtinessTracker) entity).$$_hibernate_hasDirtyAttributes();
final CustomEntityDirtinessStrategy customEntityDirtinessStrategy =
persistenceContext.getSession().getFactory().getCustomEntityDirtinessStrategy();
if ( customEntityDirtinessStrategy.canDirtyCheck( entity, getPersister(), (Session) persistenceContext.getSession() ) ) {
return ! customEntityDirtinessStrategy.isDirty( entity, getPersister(), (Session) persistenceContext.getSession() );
}
if ( getPersister().hasMutableProperties() ) {
return false;
}
if ( getPersister().getInstrumentationMetadata().isInstrumented() ) {
// the entity must be instrumented (otherwise we cant check dirty flag) and the dirty flag is false
return ! getPersister().getInstrumentationMetadata().extractInterceptor( entity ).isDirty();
}
return false;
}
/** /**
* Can the entity be modified? * Can the entity be modified?
@ -399,66 +131,18 @@ public final class EntityEntry implements Serializable {
* </ul> * </ul>
* @return true, if the entity is modifiable; false, otherwise, * @return true, if the entity is modifiable; false, otherwise,
*/ */
public boolean isModifiableEntity() { boolean isModifiableEntity();
Status status = getStatus();
Status previousStatus = getPreviousStatus();
return getPersister().isMutable()
&& status != Status.READ_ONLY
&& ! ( status == Status.DELETED && previousStatus == Status.READ_ONLY );
}
public void forceLocked(Object entity, Object nextVersion) { void forceLocked(Object entity, Object nextVersion);
version = nextVersion;
loadedState[ persister.getVersionProperty() ] = version;
// TODO: use LockMode.PESSIMISTIC_FORCE_INCREMENT
//noinspection deprecation
setLockMode( LockMode.FORCE );
persister.setPropertyValue( entity, getPersister().getVersionProperty(), nextVersion );
}
public boolean isReadOnly() { boolean isReadOnly();
Status status = getStatus();
if (status != Status.MANAGED && status != Status.READ_ONLY) {
throw new HibernateException("instance was not in a valid state");
}
return status == Status.READ_ONLY;
}
public void setReadOnly(boolean readOnly, Object entity) { void setReadOnly(boolean readOnly, Object entity);
if ( readOnly == isReadOnly() ) {
// simply return since the status is not being changed
return;
}
if ( readOnly ) {
setStatus( Status.READ_ONLY );
loadedState = null;
}
else {
if ( ! persister.isMutable() ) {
throw new IllegalStateException( "Cannot make an immutable entity modifiable." );
}
setStatus( Status.MANAGED );
loadedState = getPersister().getPropertyValues( entity );
persistenceContext.getNaturalIdHelper().manageLocalNaturalIdCrossReference(
persister,
id,
loadedState,
null,
CachedNaturalIdValueSource.LOAD
);
}
}
@Override @Override
public String toString() { String toString();
return "EntityEntry" +
MessageHelper.infoString( getPersister().getEntityName(), id ) +
'(' + getStatus() + ')';
}
public boolean isLoadedWithLazyPropertiesUnfetched() { boolean isLoadedWithLazyPropertiesUnfetched();
return getCompressedValue( BooleanState.LOADED_WITH_LAZY_PROPERTIES_UNFETCHED );
}
/** /**
* Custom serialization routine used during serialization of a * Custom serialization routine used during serialization of a
@ -468,250 +152,12 @@ public final class EntityEntry implements Serializable {
* *
* @throws java.io.IOException If a stream error occurs * @throws java.io.IOException If a stream error occurs
*/ */
public void serialize(ObjectOutputStream oos) throws IOException { void serialize(ObjectOutputStream oos) throws IOException;
Status previousStatus = getPreviousStatus();
oos.writeObject( getEntityName() );
oos.writeObject( id );
oos.writeObject( getStatus().name() );
oos.writeObject( (previousStatus == null ? "" : previousStatus.name()) );
// todo : potentially look at optimizing these two arrays
oos.writeObject( loadedState );
oos.writeObject( getDeletedState() );
oos.writeObject( version );
oos.writeObject( getLockMode().toString() );
oos.writeBoolean( isExistsInDatabase() );
oos.writeBoolean( isBeingReplicated() );
oos.writeBoolean( isLoadedWithLazyPropertiesUnfetched() );
}
/**
* Custom deserialization routine used during deserialization of a
* Session/PersistenceContext for increased performance.
*
* @param ois The stream from which to read the entry.
* @param persistenceContext The context being deserialized.
*
* @return The deserialized EntityEntry
*
* @throws IOException If a stream error occurs
* @throws ClassNotFoundException If any of the classes declared in the stream
* cannot be found
*/
public static EntityEntry deserialize(
ObjectInputStream ois,
PersistenceContext persistenceContext) throws IOException, ClassNotFoundException {
String previousStatusString;
return new EntityEntry(
persistenceContext.getSession().getFactory(),
(String) ois.readObject(),
(Serializable) ois.readObject(),
Status.valueOf( (String) ois.readObject() ),
( previousStatusString = (String) ois.readObject() ).length() == 0
? null
: Status.valueOf( previousStatusString ),
(Object[]) ois.readObject(),
(Object[]) ois.readObject(),
ois.readObject(),
LockMode.valueOf( (String) ois.readObject() ),
ois.readBoolean(),
ois.readBoolean(),
ois.readBoolean(),
persistenceContext
);
}
//the following methods are handling extraState contracts. //the following methods are handling extraState contracts.
//they are not shared by a common superclass to avoid alignment padding //they are not shared by a common superclass to avoid alignment padding
//we are trading off duplication for padding efficiency //we are trading off duplication for padding efficiency
public void addExtraState(EntityEntryExtraState extraState) { void addExtraState(EntityEntryExtraState extraState);
if ( next == null ) {
next = extraState;
}
else {
next.addExtraState( extraState );
}
}
public <T extends EntityEntryExtraState> T getExtraState(Class<T> extraStateType) { <T extends EntityEntryExtraState> T getExtraState(Class<T> extraStateType);
if ( next == null ) {
return null;
}
if ( extraStateType.isAssignableFrom( next.getClass() ) ) {
return (T) next;
}
else {
return next.getExtraState( extraStateType );
}
}
/**
* Saves the value for the given enum property.
*
* @param state
* identifies the value to store
* @param value
* the value to store; The caller must make sure that it matches
* the given identifier
*/
private <E extends Enum<E>> void setCompressedValue(EnumState<E> state, E value) {
// reset the bits for the given property to 0
compressedState &= state.getUnsetMask();
// store the numeric representation of the enum value at the right offset
compressedState |= ( state.getValue( value ) << state.getOffset() );
}
/**
* Gets the current value of the given enum property.
*
* @param state
* identifies the value to store
* @return the current value of the specified property
*/
private <E extends Enum<E>> E getCompressedValue(EnumState<E> state) {
// restore the numeric value from the bits at the right offset and return the corresponding enum constant
int index = ( ( compressedState & state.getMask() ) >> state.getOffset() ) - 1;
return index == - 1 ? null : state.getEnumConstants()[index];
}
/**
* Saves the value for the given boolean flag.
*
* @param state
* identifies the value to store
* @param value
* the value to store
*/
private void setCompressedValue(BooleanState state, boolean value) {
compressedState &= state.getUnsetMask();
compressedState |= ( state.getValue( value ) << state.getOffset() );
}
/**
* Gets the current value of the given boolean flag.
*
* @param state
* identifies the value to store
* @return the current value of the specified flag
*/
private boolean getCompressedValue(BooleanState state) {
return ( ( compressedState & state.getMask() ) >> state.getOffset() ) == 1;
}
/**
* Represents an enum value stored within a number value, using four bits starting at a specified offset.
*
* @author Gunnar Morling
*/
private static class EnumState<E extends Enum<E>> {
private static final EnumState<LockMode> LOCK_MODE = new EnumState<LockMode>( 0, LockMode.class );
private static final EnumState<Status> STATUS = new EnumState<Status>( 4, Status.class );
private static final EnumState<Status> PREVIOUS_STATUS = new EnumState<Status>( 8, Status.class );
private final int offset;
private final E[] enumConstants;
private final int mask;
private final int unsetMask;
private EnumState(int offset, Class<E> enumType) {
E[] enumConstants = enumType.getEnumConstants();
// In case any of the enums cannot be stored in 4 bits anymore, we'd have to re-structure the compressed
// state int
if ( enumConstants.length > 15 ) {
throw new AssertionFailure( "Cannot store enum type " + enumType.getName() + " in compressed state as"
+ " it has too many values." );
}
this.offset = offset;
this.enumConstants = enumConstants;
// a mask for reading the four bits, starting at the right offset
this.mask = 0xF << offset;
// a mask for setting the four bits at the right offset to 0
this.unsetMask = 0xFFFF & ~mask;
}
/**
* Returns the numeric value to be stored for the given enum value.
*/
private int getValue(E value) {
return value != null ? value.ordinal() + 1 : 0;
}
/**
* Returns the offset within the number value at which this enum value is stored.
*/
private int getOffset() {
return offset;
}
/**
* Returns the bit mask for reading this enum value from the number value storing it.
*/
private int getMask() {
return mask;
}
/**
* Returns the bit mask for resetting this enum value from the number value storing it.
*/
private int getUnsetMask() {
return unsetMask;
}
/**
* Returns the constants of the represented enum which is cached for performance reasons.
*/
private E[] getEnumConstants() {
return enumConstants;
}
}
/**
* Represents a boolean flag stored within a number value, using one bit at a specified offset.
*
* @author Gunnar Morling
*/
private enum BooleanState {
EXISTS_IN_DATABASE(13),
IS_BEING_REPLICATED(14),
LOADED_WITH_LAZY_PROPERTIES_UNFETCHED(15);
private final int offset;
private final int mask;
private final int unsetMask;
private BooleanState(int offset) {
this.offset = offset;
this.mask = 0x1 << offset;
this.unsetMask = 0xFFFF & ~mask;
}
private int getValue(boolean value) {
return value ? 1 : 0;
}
/**
* Returns the offset within the number value at which this boolean flag is stored.
*/
private int getOffset() {
return offset;
}
/**
* Returns the bit mask for reading this flag from the number value storing it.
*/
private int getMask() {
return mask;
}
/**
* Returns the bit mask for resetting this flag from the number value storing it.
*/
private int getUnsetMask() {
return unsetMask;
}
}
} }

55
hibernate-core/src/main/java/org/hibernate/engine/spi/EntityEntryFactory.java Normal file
View File

@ -0,0 +1,55 @@
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2015, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.engine.spi;
import java.io.Serializable;
import org.hibernate.LockMode;
import org.hibernate.persister.entity.EntityPersister;
import org.hibernate.service.Service;
/**
* Contract to build {@link org.hibernate.engine.spi.EntityEntry}
*
* @author Emmanuel Bernard <emmanuel@hibernate.org>
*/
public interface EntityEntryFactory extends Service {
/**
* Creates {@link org.hibernate.engine.spi.EntityEntry}.
*/
EntityEntry createEntityEntry(
final Status status,
final Object[] loadedState,
final Object rowId,
final Serializable id,
final Object version,
final LockMode lockMode,
final boolean existsInDatabase,
final EntityPersister persister,
final boolean disableVersionIncrement,
final boolean lazyPropertiesAreUnfetched,
final PersistenceContext persistenceContext);
}

2
hibernate-core/src/main/java/org/hibernate/service/internal/StandardSessionFactoryServiceInitiators.java
View File

@ -27,6 +27,7 @@ import java.util.ArrayList;
import java.util.Collections; import java.util.Collections;
import java.util.List; import java.util.List;
import org.hibernate.engine.internal.EntityEntryFactoryInitiator;
import org.hibernate.engine.query.spi.NativeQueryInterpreterInitiator; import org.hibernate.engine.query.spi.NativeQueryInterpreterInitiator;
import org.hibernate.engine.spi.CacheInitiator; import org.hibernate.engine.spi.CacheInitiator;
import org.hibernate.event.service.internal.EventListenerServiceInitiator; import org.hibernate.event.service.internal.EventListenerServiceInitiator;
@ -48,6 +49,7 @@ public class StandardSessionFactoryServiceInitiators {
serviceInitiators.add( EventListenerServiceInitiator.INSTANCE ); serviceInitiators.add( EventListenerServiceInitiator.INSTANCE );
serviceInitiators.add( StatisticsInitiator.INSTANCE ); serviceInitiators.add( StatisticsInitiator.INSTANCE );
serviceInitiators.add( CacheInitiator.INSTANCE ); serviceInitiators.add( CacheInitiator.INSTANCE );
serviceInitiators.add( EntityEntryFactoryInitiator.INSTANCE );
serviceInitiators.add( NativeQueryInterpreterInitiator.INSTANCE ); serviceInitiators.add( NativeQueryInterpreterInitiator.INSTANCE );

5
hibernate-core/src/test/java/org/hibernate/engine/spi/EntityEntryTest.java
View File

@ -34,6 +34,7 @@ import java.io.ObjectInputStream;
import java.io.ObjectOutputStream; import java.io.ObjectOutputStream;
import org.hibernate.LockMode; import org.hibernate.LockMode;
import org.hibernate.engine.internal.MutableEntityEntry;
import org.junit.Test; import org.junit.Test;
/** /**
@ -118,7 +119,7 @@ public class EntityEntryTest {
oos.flush(); oos.flush();
InputStream is = new ByteArrayInputStream( baos.toByteArray() ); InputStream is = new ByteArrayInputStream( baos.toByteArray() );
EntityEntry deserializedEntry = EntityEntry.deserialize(new ObjectInputStream( is ), getPersistenceContextMock() ); EntityEntry deserializedEntry = MutableEntityEntry.deserialize(new ObjectInputStream( is ), getPersistenceContextMock() );
assertEquals( LockMode.OPTIMISTIC, deserializedEntry.getLockMode() ); assertEquals( LockMode.OPTIMISTIC, deserializedEntry.getLockMode() );
assertEquals( Status.MANAGED, deserializedEntry.getStatus() ); assertEquals( Status.MANAGED, deserializedEntry.getStatus() );
@ -129,7 +130,7 @@ public class EntityEntryTest {
private EntityEntry createEntityEntry() { private EntityEntry createEntityEntry() {
return new EntityEntry( return new MutableEntityEntry(
Status.MANAGED, // status Status.MANAGED, // status
new Object[]{}, // loadedState new Object[]{}, // loadedState
1L, // rowId 1L, // rowId

3
hibernate-core/src/test/java/org/hibernate/test/bytecode/enhancement/EnhancerTestUtils.java
View File

@ -33,6 +33,7 @@ import org.hibernate.bytecode.enhance.spi.DefaultEnhancementContext;
import org.hibernate.bytecode.enhance.spi.EnhancementContext; import org.hibernate.bytecode.enhance.spi.EnhancementContext;
import org.hibernate.bytecode.enhance.spi.Enhancer; import org.hibernate.bytecode.enhance.spi.Enhancer;
import org.hibernate.bytecode.enhance.spi.EnhancerConstants; import org.hibernate.bytecode.enhance.spi.EnhancerConstants;
import org.hibernate.engine.internal.DefaultEntityEntryFactory;
import org.hibernate.engine.spi.CompositeOwner; import org.hibernate.engine.spi.CompositeOwner;
import org.hibernate.engine.spi.CompositeTracker; import org.hibernate.engine.spi.CompositeTracker;
import org.hibernate.engine.spi.EntityEntry; import org.hibernate.engine.spi.EntityEntry;
@ -222,7 +223,7 @@ public abstract class EnhancerTestUtils extends BaseUnitTestCase {
} }
static EntityEntry makeEntityEntry() { static EntityEntry makeEntityEntry() {
return new EntityEntry( return new DefaultEntityEntryFactory().createEntityEntry(
Status.MANAGED, Status.MANAGED,
null, null,
null, null,