/*
 * 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 <http://www.gnu.org/licenses/lgpl-2.1.html>.
 */
package org.hibernate.loader.plan.build.internal.returns;

import org.hibernate.engine.FetchStrategy;
import org.hibernate.loader.plan.spi.AnyAttributeFetch;
import org.hibernate.loader.plan.spi.AttributeFetch;
import org.hibernate.loader.plan.spi.EntityReference;
import org.hibernate.loader.plan.spi.FetchSource;
import org.hibernate.persister.walking.spi.AssociationAttributeDefinition;
import org.hibernate.persister.walking.spi.AttributeDefinition;
import org.hibernate.type.AnyType;

/**
 * @author Steve Ebersole
 * @author Gail Badner
 */
public class AnyAttributeFetchImpl extends AbstractAnyReference implements AnyAttributeFetch, AttributeFetch {
	private final FetchSource fetchSource;
	private final AssociationAttributeDefinition fetchedAttribute;
	private final FetchStrategy fetchStrategy;

	public AnyAttributeFetchImpl(
			FetchSource fetchSource,
			AssociationAttributeDefinition fetchedAttribute,
			FetchStrategy fetchStrategy) {
		super( fetchSource.getPropertyPath().append( fetchedAttribute.getName() ) );

		this.fetchSource = fetchSource;
		this.fetchedAttribute = fetchedAttribute;
		this.fetchStrategy = fetchStrategy;
	}

	@Override
	public FetchSource getSource() {
		return fetchSource;
	}

	@Override
	public FetchStrategy getFetchStrategy() {
		return fetchStrategy;
	}

	@Override
	public AnyType getFetchedType() {
		return (AnyType) fetchedAttribute.getType();
	}

	@Override
	public boolean isNullable() {
		return fetchedAttribute.isNullable();
	}

	@Override
	public String[] toSqlSelectFragments(String alias) {
		return new String[0];  //To change body of implemented methods use File | Settings | File Templates.
	}

	@Override
	public String getAdditionalJoinConditions() {
		// only pertinent for HQL...
		return null;
	}

	@Override
	public EntityReference resolveEntityReference() {
		return fetchSource.resolveEntityReference();
	}

	@Override
	public AttributeDefinition getFetchedAttributeDefinition() {
		return fetchedAttribute;
	}
}