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Hibernate definition of the Java Persistence 2.0 (JSR 317) API.

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// $Id: FetchParent.java 17752 2009-10-15 01:19:21Z [email protected] $
// EJB3 Specification Copyright 2004-2009 Sun Microsystems, Inc.
package javax.persistence.criteria;

import javax.persistence.metamodel.PluralAttribute;
import javax.persistence.metamodel.SingularAttribute;

/**
 * Represents an element of the from clause which may
 * function as the parent of Fetches.
 *
 * @param   the source type
 * @param   the target type
 * @since Java Persistence 2.0
 */
public interface FetchParent {
	/**
	 * Return the fetch joins that have been made from this type.
	 * Returns empty set if no fetch joins have been made from
	 * this type.
	 * Modifications to the set do not affect the query.
	 *
	 * @return fetch joins made from this type
	 */
	java.util.Set> getFetches();

	/**
	 * Create a fetch join to the specified single-valued attribute
	 * using an inner join.
	 *
	 * @param attribute target of the join
	 *
	 * @return the resulting fetch join
	 */
	 Fetch fetch(SingularAttribute attribute);

	/**
	 * Create a fetch join to the specified single-valued attribute
	 * using the given join type.
	 *
	 * @param attribute target of the join
	 * @param jt join type
	 *
	 * @return the resulting fetch join
	 */
	 Fetch fetch(SingularAttribute attribute, JoinType jt);

	/**
	 * Create a fetch join to the specified collection-valued
	 * attribute using an inner join.
	 *
	 * @param attribute target of the join
	 *
	 * @return the resulting join
	 */
	 Fetch fetch(PluralAttribute attribute);

	/**
	 * Create a fetch join to the specified collection-valued
	 * attribute using the given join type.
	 *
	 * @param attribute target of the join
	 * @param jt join type
	 *
	 * @return the resulting join
	 */
	 Fetch fetch(PluralAttribute attribute, JoinType jt);


	//String-based:

	/**
	 * Create a fetch join to the specified attribute using an
	 * inner join.
	 *
	 * @param attributeName name of the attribute for the
	 * target of the join
	 *
	 * @return the resulting fetch join
	 *
	 * @throws IllegalArgumentException if attribute of the given
	 * name does not exist
	 */
	@SuppressWarnings("hiding")
	 Fetch fetch(String attributeName);

	/**
	 * Create a fetch join to the specified attribute using
	 * the given join type.
	 *
	 * @param attributeName name of the attribute for the
	 * target of the join
	 * @param jt join type
	 *
	 * @return the resulting fetch join
	 *
	 * @throws IllegalArgumentException if attribute of the given
	 * name does not exist
	 */
	@SuppressWarnings("hiding")
	 Fetch fetch(String attributeName, JoinType jt);
}