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The core O/RM functionality as provided by Hibernate

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/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 * See the lgpl.txt file in the root directory or .
 */
package org.hibernate.action.internal;

import java.io.Serializable;

import org.hibernate.HibernateException;
import org.hibernate.collection.spi.PersistentCollection;
import org.hibernate.engine.spi.SharedSessionContractImplementor;
import org.hibernate.persister.collection.CollectionPersister;

/**
 * If a collection is extra lazy and has queued ops, we still need to
 * process them.  Ex: OneToManyPersister needs to insert indexes for List
 * collections.  See HHH-8083.
 * 
 * @author Brett Meyer
 */
public final class QueuedOperationCollectionAction extends CollectionAction {
	
	/**
	 * Constructs a CollectionUpdateAction
	 *
	 * @param collection The collection to update
	 * @param persister The collection persister
	 * @param id The collection key
	 * @param session The session
	 */
	public QueuedOperationCollectionAction(
			final PersistentCollection collection,
			final CollectionPersister persister,
			final Serializable id,
			final SharedSessionContractImplementor session) {
		super( persister, collection, id, session );
	}

	@Override
	public void execute() throws HibernateException {
		getPersister().processQueuedOps( getCollection(), getKey(), getSession() );
	}
}