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/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2011, 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.event.spi;
import java.lang.reflect.Field;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import org.hibernate.HibernateException;
/**
* Enumeration of the recognized types of events, including meta-information about each.
*
* @author Steve Ebersole
*/
public class EventType {
public static final EventType LOAD = create( "load", LoadEventListener.class );
public static final EventType RESOLVE_NATURAL_ID = create( "resolve-natural-id", ResolveNaturalIdEventListener.class );
public static final EventType INIT_COLLECTION = create( "load-collection", InitializeCollectionEventListener.class );
public static final EventType SAVE_UPDATE = create( "save-update", SaveOrUpdateEventListener.class );
public static final EventType UPDATE = create( "update", SaveOrUpdateEventListener.class );
public static final EventType SAVE = create( "save", SaveOrUpdateEventListener.class );
public static final EventType PERSIST = create( "create", PersistEventListener.class );
public static final EventType PERSIST_ONFLUSH = create( "create-onflush", PersistEventListener.class );
public static final EventType MERGE = create( "merge", MergeEventListener.class );
public static final EventType DELETE = create( "delete", DeleteEventListener.class );
public static final EventType REPLICATE = create( "replicate", ReplicateEventListener.class );
public static final EventType FLUSH = create( "flush", FlushEventListener.class );
public static final EventType AUTO_FLUSH = create( "auto-flush", AutoFlushEventListener.class );
public static final EventType DIRTY_CHECK = create( "dirty-check", DirtyCheckEventListener.class );
public static final EventType FLUSH_ENTITY = create( "flush-entity", FlushEntityEventListener.class );
public static final EventType CLEAR = create( "clear", ClearEventListener.class );
public static final EventType EVICT = create( "evict", EvictEventListener.class );
public static final EventType LOCK = create( "lock", LockEventListener.class );
public static final EventType REFRESH = create( "refresh", RefreshEventListener.class );
public static final EventType PRE_LOAD = create( "pre-load", PreLoadEventListener.class );
public static final EventType PRE_DELETE = create( "pre-delete", PreDeleteEventListener.class );
public static final EventType PRE_UPDATE = create( "pre-update", PreUpdateEventListener.class );
public static final EventType PRE_INSERT = create( "pre-insert", PreInsertEventListener.class );
public static final EventType POST_LOAD = create( "post-load", PostLoadEventListener.class );
public static final EventType POST_DELETE = create( "post-delete", PostDeleteEventListener.class );
public static final EventType POST_UPDATE = create( "post-update", PostUpdateEventListener.class );
public static final EventType POST_INSERT = create( "post-insert", PostInsertEventListener.class );
public static final EventType POST_COMMIT_DELETE = create( "post-commit-delete", PostDeleteEventListener.class );
public static final EventType POST_COMMIT_UPDATE = create( "post-commit-update", PostUpdateEventListener.class );
public static final EventType POST_COMMIT_INSERT = create( "post-commit-insert", PostInsertEventListener.class );
public static final EventType PRE_COLLECTION_RECREATE = create( "pre-collection-recreate", PreCollectionRecreateEventListener.class );
public static final EventType PRE_COLLECTION_REMOVE = create( "pre-collection-remove", PreCollectionRemoveEventListener.class );
public static final EventType PRE_COLLECTION_UPDATE = create( "pre-collection-update", PreCollectionUpdateEventListener.class );
public static final EventType POST_COLLECTION_RECREATE = create( "post-collection-recreate", PostCollectionRecreateEventListener.class );
public static final EventType POST_COLLECTION_REMOVE = create( "post-collection-remove", PostCollectionRemoveEventListener.class );
public static final EventType POST_COLLECTION_UPDATE = create( "post-collection-update", PostCollectionUpdateEventListener.class );
private static EventType create(String name, Class listenerClass) {
return new EventType( name, listenerClass );
}
/**
* Maintain a map of {@link EventType} instances keyed by name for lookup by name as well as {@link #values()}
* resolution.
*/
private static final Map EVENT_TYPE_BY_NAME_MAP = AccessController.doPrivileged(
new PrivilegedAction>() {
@Override
public Map run() {
final Map typeByNameMap = new HashMap();
for ( Field field : EventType.class.getDeclaredFields() ) {
if ( EventType.class.isAssignableFrom( field.getType() ) ) {
try {
final EventType typeField = (EventType) field.get( null );
typeByNameMap.put( typeField.eventName(), typeField );
}
catch (Exception t) {
throw new HibernateException( "Unable to initialize EventType map", t );
}
}
}
return typeByNameMap;
}
}
);
/**
* Find an {@link EventType} by its name
*
* @param eventName The name
*
* @return The {@link EventType} instance.
*
* @throws HibernateException If eventName is null, or if eventName does not correlate to any known event type.
*/
public static EventType resolveEventTypeByName(final String eventName) {
if ( eventName == null ) {
throw new HibernateException( "event name to resolve cannot be null" );
}
final EventType eventType = EVENT_TYPE_BY_NAME_MAP.get( eventName );
if ( eventType == null ) {
throw new HibernateException( "Unable to locate proper event type for event name [" + eventName + "]" );
}
return eventType;
}
/**
* Get a collection of all {@link EventType} instances.
*
* @return All {@link EventType} instances
*/
public static Collection values() {
return EVENT_TYPE_BY_NAME_MAP.values();
}
private final String eventName;
private final Class baseListenerInterface;
private EventType(String eventName, Class baseListenerInterface) {
this.eventName = eventName;
this.baseListenerInterface = baseListenerInterface;
}
public String eventName() {
return eventName;
}
public Class baseListenerInterface() {
return baseListenerInterface;
}
@Override
public String toString() {
return eventName();
}
}
