org.hibernate.envers.internal.entities.mapper.relation.component.MiddleMapKeyPropertyComponentMapper Maven / Gradle / Ivy

/*
 * 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 .
 */
package org.hibernate.envers.internal.entities.mapper.relation.component;

import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Map;

import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.envers.internal.entities.EntityInstantiator;
import org.hibernate.envers.internal.tools.ReflectionTools;
import org.hibernate.envers.internal.tools.query.Parameters;
import org.hibernate.property.access.spi.Getter;

/**
 * A component mapper for the @MapKey mapping with the name parameter specified: the value of the map's key
 * is a property of the entity. This doesn't have an effect on the data stored in the versions tables,
 * so mapToMapFromObject is empty.
 *
 * @author Adam Warski (adam at warski dot org)
 */
public class MiddleMapKeyPropertyComponentMapper implements MiddleComponentMapper {
	private final String propertyName;
	private final String accessType;

	public MiddleMapKeyPropertyComponentMapper(String propertyName, String accessType) {
		this.propertyName = propertyName;
		this.accessType = accessType;
	}

	@Override
	public Object mapToObjectFromFullMap(
			final EntityInstantiator entityInstantiator,
			final Map data,
			final Object dataObject,
			Number revision) {
		// dataObject is not null, as this mapper can only be used in an index.
		return AccessController.doPrivileged(
				new PrivilegedAction