/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, Red Hat Middleware LLC 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 Middleware LLC.
*
* 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.envers.entities.mapper.relation.component;
import java.util.Map;
import org.hibernate.envers.entities.EntityInstantiator;
import org.hibernate.envers.tools.query.Parameters;
/**
* @author Adam Warski (adam at warski dot org)
*/
public interface MiddleComponentMapper {
/**
* Maps from full object data, contained in the given map (or object representation of the map, if
* available), to an object.
* @param entityInstantiator An entity instatiator bound with an open versions reader.
* @param data Full object data.
* @param dataObject An optional object representation of the data.
* @param revision Revision at which the data is read.
* @return An object with data corresponding to the one found in the given map.
*/
Object mapToObjectFromFullMap(EntityInstantiator entityInstantiator, Map<String, Object> data,
Object dataObject, Number revision);
/**
* Maps from an object to the object's map representation (for an entity - only its id).
* @param data Map to which data should be added.
* @param obj Object to map from.
*/
void mapToMapFromObject(Map<String, Object> data, Object obj);
/**
* Adds query statements, which contains restrictions, which express the property that part of the middle
* entity with alias prefix1, is equal to part of the middle entity with alias prefix2 (the entity is the same).
* The part is the component's representation in the middle entity.
* @param parameters Parameters, to which to add the statements.
* @param prefix1 First alias of the entity + prefix to add to the properties.
* @param prefix2 Second alias of the entity + prefix to add to the properties.
*/
void addMiddleEqualToQuery(Parameters parameters, String prefix1, String prefix2);
}