javax.persistence.metamodel.Metamodel Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of hibernate-jpa-2.0-api Show documentation

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

There is a newer version: 1.0.1.Final

Show newest version

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

import java.util.Set;

/**
 * Provides access to the metamodel of persistent
 * entities in the persistence unit.
 *
 * @since Java Persistence 2.0
 */
public interface Metamodel {
	/**
	 * Return the metamodel entity type representing the entity.
	 *
	 * @param cls the type of the represented entity
	 *
	 * @return the metamodel entity type
	 *
	 * @throws IllegalArgumentException if not an entity
	 */
	 EntityType entity(Class cls);

	/**
	 * Return the metamodel managed type representing the
	 * entity, mapped superclass, or embeddable class.
	 *
	 * @param cls the type of the represented managed class
	 *
	 * @return the metamodel managed type
	 *
	 * @throws IllegalArgumentException if not a managed class
	 */
	 ManagedType managedType(Class cls);

	/**
	 * Return the metamodel embeddable type representing the
	 * embeddable class.
	 *
	 * @param cls the type of the represented embeddable class
	 *
	 * @return the metamodel embeddable type
	 *
	 * @throws IllegalArgumentException if not an embeddable class
	 */
	 EmbeddableType embeddable(Class cls);

	/**
	 * Return the metamodel managed types.
	 *
	 * @return the metamodel managed types
	 */
	Set> getManagedTypes();

	/**
	 * Return the metamodel entity types.
	 *
	 * @return the metamodel entity types
	 */
	Set> getEntities();

	/**
	 * Return the metamodel embeddable types.  Returns empty set
	 * if there are no embeddable types.
	 *
	 * @return the metamodel embeddable types
	 */
	Set> getEmbeddables();
}