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The core O/RM functionality as provided by Hibernate

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/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2013, 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.persister.walking.spi;

import org.hibernate.engine.FetchStrategy;
import org.hibernate.engine.spi.CascadeStyle;
import org.hibernate.engine.spi.LoadQueryInfluencers;
import org.hibernate.loader.PropertyPath;
import org.hibernate.persister.spi.HydratedCompoundValueHandler;
import org.hibernate.type.AssociationType;

/**
 * @author Steve Ebersole
 */
public interface AssociationAttributeDefinition extends AttributeDefinition {
	@Override
	AssociationType getType();

	public AssociationKey getAssociationKey();

	public static enum AssociationNature {
		ANY,
		ENTITY,
		COLLECTION
	}

	public AssociationNature getAssociationNature();

	public EntityDefinition toEntityDefinition();

	public CollectionDefinition toCollectionDefinition();

	public AnyMappingDefinition toAnyDefinition();

	public FetchStrategy determineFetchPlan(LoadQueryInfluencers loadQueryInfluencers, PropertyPath propertyPath);

	public CascadeStyle determineCascadeStyle();

	public HydratedCompoundValueHandler getHydratedCompoundValueExtractor();
}