IEntityService.java

package fr.openwide.core.jpa.business.generic.service;

import java.io.Serializable;
import java.util.Collection;
import java.util.List;

import fr.openwide.core.jpa.business.generic.model.GenericEntity;
import fr.openwide.core.jpa.business.generic.model.GenericEntityCollectionReference;
import fr.openwide.core.jpa.business.generic.model.GenericEntityReference;
import fr.openwide.core.jpa.business.generic.model.IReference;
import fr.openwide.core.jpa.business.generic.model.IReferenceable;
import fr.openwide.core.jpa.query.IQuery;

public interface IEntityService extends ITransactionalAspectAwareService {
	
	<K extends Serializable & Comparable<K>, E extends GenericEntity<K, ?>> E getEntity(Class<E> clazz, K id);
	
	<E extends GenericEntity<?, ?>> E getEntity(IReference<E> reference);

	<K extends Serializable & Comparable<K>, E extends GenericEntity<K, ?>> List<E> listEntity(Class<E> clazz, Collection<K> ids);

	<E extends GenericEntity<?, ?>> List<E> listEntity(GenericEntityCollectionReference<?, E> reference);

	<E extends GenericEntity<?, ?>> IQuery<E> getQuery(GenericEntityCollectionReference<?, E> reference);
	
	/**
	 * @param entity A {@link GenericEntity} (that may have been detached from the session) or a {@link GenericEntityReference}
	 * @return An object representing the same entity, but which is guaranteed to be attached to the session
	 */
	<E extends GenericEntity<?, ?>> E getEntity(IReferenceable<E> referenceOrEntity);
	
	void flush();
	
	void clear();
	
	<E extends GenericEntity<?, ?>> List<Class<? extends E>> listAssignableEntityTypes(Class<E> superclass);

}