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HHH-3357 : clear() performance 

git-svn-id: https://svn.jboss.org/repos/hibernate/core/trunk@15863 1b8cb986-b30d-0410-93ca-fae66ebed9b2
This commit is contained in:
Steve Ebersole 2009-02-03 01:15:58 +00:00
parent 1e45c666e6
commit 687b28fc8d
4 changed files with 175 additions and 80 deletions
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2
core/src/main/java/org/hibernate/engine/StatefulPersistenceContext.java
View File

@ -204,7 +204,7 @@ public class StatefulPersistenceContext implements PersistenceContext {
Iterator itr = proxiesByKey.values().iterator();
while ( itr.hasNext() ) {
final LazyInitializer li = ( ( HibernateProxy ) itr.next() ).getHibernateLazyInitializer();
li.setSession( null );
li.unsetSession();
}
Map.Entry[] collectionEntryArray = IdentityMap.concurrentEntries( collectionEntries );
for ( int i = 0; i < collectionEntryArray.length; i++ ) {

2
core/src/main/java/org/hibernate/event/def/DefaultEvictEventListener.java
View File

@ -83,7 +83,7 @@ public class DefaultEvictEventListener implements EvictEventListener {
doEvict( entity, key, e.getPersister(), event.getSession() );
}
}
li.setSession( null );
li.unsetSession();
}
else {
EntityEntry e = persistenceContext.removeEntry( object );

122
core/src/main/java/org/hibernate/proxy/AbstractLazyInitializer.java
View File

@ -32,54 +32,100 @@ import org.hibernate.engine.EntityKey;
import org.hibernate.engine.SessionImplementor;
/**
* Convenience base class for lazy initialization handlers. Centralizes the
* basic plumbing of doing lazy initialization freeing subclasses to
* acts as essentially adapters to their intended entity mode and/or
* Convenience base class for lazy initialization handlers. Centralizes the basic plumbing of doing lazy
* initialization freeing subclasses to acts as essentially adapters to their intended entity mode and/or
* proxy generation strategy.
*
* @author Gavin King
*/
public abstract class AbstractLazyInitializer implements LazyInitializer {
private Object target;
private boolean initialized;
private String entityName;
private Serializable id;
private transient SessionImplementor session;
private Object target;
private boolean initialized;
private boolean unwrap;
private transient SessionImplementor session;
/**
* For serialization from the non-pojo initializers (HHH-3309)
*/
protected AbstractLazyInitializer() {
}
/**
* Main constructor.
*
* @param entityName The name of the entity being proxied.
* @param id The identifier of the entity being proxied.
* @param session The session owning the proxy.
*/
protected AbstractLazyInitializer(String entityName, Serializable id, SessionImplementor session) {
this.entityName = entityName;
this.id = id;
this.session = session;
this.entityName = entityName;
}
public final Serializable getIdentifier() {
return id;
}
public final void setIdentifier(Serializable id) {
this.id = id;
}
/**
* {@inheritDoc}
*/
public final String getEntityName() {
return entityName;
}
/**
* {@inheritDoc}
*/
public final Serializable getIdentifier() {
return id;
}
/**
* {@inheritDoc}
*/
public final void setIdentifier(Serializable id) {
this.id = id;
}
/**
* {@inheritDoc}
*/
public final boolean isUninitialized() {
return !initialized;
}
/**
* {@inheritDoc}
*/
public final SessionImplementor getSession() {
return session;
}
/**
* {@inheritDoc}
*/
public final void setSession(SessionImplementor s) throws HibernateException {
if ( s != session ) {
if ( isConnectedToSession() ) {
//TODO: perhaps this should be some other RuntimeException...
throw new HibernateException("illegally attempted to associate a proxy with two open Sessions");
}
else {
session = s;
}
}
}
/**
* {@inheritDoc}
*/
public void unsetSession() {
session = null;
}
/**
* {@inheritDoc}
*/
public final void initialize() throws HibernateException {
if (!initialized) {
if ( session==null ) {
@ -110,29 +156,17 @@ public abstract class AbstractLazyInitializer implements LazyInitializer {
}
}
public final void setSession(SessionImplementor s) throws HibernateException {
if (s!=session) {
if ( isConnectedToSession() ) {
//TODO: perhaps this should be some other RuntimeException...
throw new HibernateException("illegally attempted to associate a proxy with two open Sessions");
}
else {
session = s;
}
}
}
/**
* Getter for property 'connectedToSession'.
*
* @return Value for property 'connectedToSession'.
*/
protected final boolean isConnectedToSession() {
return session!=null &&
session.isOpen() &&
session.getPersistenceContext().containsProxy(this);
}
public final void setImplementation(Object target) {
this.target = target;
initialized = true;
}
/**
* Return the underlying persistent object, initializing if necessary
*/
@ -141,6 +175,14 @@ public abstract class AbstractLazyInitializer implements LazyInitializer {
return target;
}
/**
* {@inheritDoc}
*/
public final void setImplementation(Object target) {
this.target = target;
initialized = true;
}
/**
* Return the underlying persistent object in the given <tt>Session</tt>, or null,
* do not initialize the proxy
@ -154,16 +196,28 @@ public abstract class AbstractLazyInitializer implements LazyInitializer {
return s.getPersistenceContext().getEntity( entityKey );
}
/**
* Getter for property 'target'.
* <p/>
* Same as {@link #getImplementation()} except that this method will not force initialization.
*
* @return Value for property 'target'.
*/
protected final Object getTarget() {
return target;
}
/**
* {@inheritDoc}
*/
public boolean isUnwrap() {
return unwrap;
}
/**
* {@inheritDoc}
*/
public void setUnwrap(boolean unwrap) {
this.unwrap = unwrap;
}
}

111
core/src/main/java/org/hibernate/proxy/LazyInitializer.java
View File

@ -31,67 +31,108 @@ import org.hibernate.engine.SessionImplementor;
/**
* Handles fetching of the underlying entity for a proxy
*
* @author Gavin King
* @author Steve Ebersole
*/
public interface LazyInitializer {
/**
* Initialize the proxy, fetching the target entity if necessary.
*
* @throws HibernateException Indicates a problem initializing the proxy.
*/
public void initialize() throws HibernateException;
/**
* Initialize the proxy, fetching the target
* entity if necessary
* Retrieve the identifier value for the enity our owning proxy represents.
*
* @return The identifier value.
*/
public abstract void initialize() throws HibernateException;
public Serializable getIdentifier();
/**
* Get the identifier held by the proxy
* Set the identifier value for the enity our owning proxy represents.
*
* @param id The identifier value.
*/
public abstract Serializable getIdentifier();
public void setIdentifier(Serializable id);
/**
* Set the identifier property of the proxy
* The entity-name of the entity our owning proxy represents.
*
* @return The entity-name.
*/
public abstract void setIdentifier(Serializable id);
public String getEntityName();
/**
* Get the entity name
* Get the actual class of the entity. Generally, {@link #getEntityName()} should be used instead.
*
* @return The actual entity class.
*/
public abstract String getEntityName();
/**
* Get the actual class of the entity (don't
* use this, use the entityName)
*/
public abstract Class getPersistentClass();
public Class getPersistentClass();
/**
* Is the proxy uninitialzed?
*
* @return True if uninitialized; false otherwise.
*/
public abstract boolean isUninitialized();
/**
* Initialize the proxy manually
*/
public abstract void setImplementation(Object target);
/**
* Get the session, if this proxy is attached
*/
public abstract SessionImplementor getSession();
/**
* Attach the proxy to a session
*/
public abstract void setSession(SessionImplementor s) throws HibernateException;
public boolean isUninitialized();
/**
* Return the underlying persistent object, initializing if necessary
*
* @return The underlying target entity.
*/
public abstract Object getImplementation();
public Object getImplementation();
/**
* Return the underlying persistent object in the given <tt>Session</tt>, or null
* Return the underlying persistent object in the given session, or null if not contained in this session's
* persistence context.
*
* @param session The session to check
*
* @return The target, or null.
*
* @throws HibernateException Indicates problem locating the target.
*/
public abstract Object getImplementation(SessionImplementor s)
throws HibernateException;
public abstract Object getImplementation(SessionImplementor session) throws HibernateException;
/**
* Initialize the proxy manually by injecting its target.
*
* @param target The proxy target (the actual entity being proxied).
*/
public void setImplementation(Object target);
/**
* Get the session to which this proxy is associated, or null if it is not attached.
*
* @return The associated session.
*/
public SessionImplementor getSession();
/**
* Associate the proxy with the given session.
* <p/>
* Care should be given to make certain that the proxy is added to the session's persistence context as well
* to maintain the symetry of the association. That must be done seperately as this method simply sets an
* internal reference. We do also check that if there is already an associated session that the proxy
* reference was removed from that previous session's persistence contet.
*
* @param session The session
* @throws HibernateException Indicates that the proxy was still contained in the persistence context of the
* "previous session".
*/
public void setSession(SessionImplementor session) throws HibernateException;
/**
* Unset this initializer's reference to session. It is assumed that the caller is also taking care or
* cleaning up the owning proxy's reference in the persistence context.
* <p/>
* Generally speaking this is intended to be called only during {@link org.hibernate.Session#evict} and
* {@link org.hibernate.Session#clear} processing; most other use-cases should call {@link #setSession} instead.
*/
public void unsetSession();
public void setUnwrap(boolean unwrap);
public boolean isUnwrap();