org.hibernate.envers.internal.entities.mapper.relation.component.MiddleStraightComponentMapper Maven / Gradle / Ivy
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Hibernate's entity version (audit/history) support
/*
* 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.util.Map;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.envers.internal.entities.EntityInstantiator;
import org.hibernate.envers.internal.tools.query.Parameters;
/**
* A mapper for reading and writing a property straight to/from maps. This mapper cannot be used with middle tables,
* but only with "fake" bidirectional indexed relations.
*
* @author Adam Warski (adam at warski dot org)
*/
public final class MiddleStraightComponentMapper implements MiddleComponentMapper {
private final String propertyName;
public MiddleStraightComponentMapper(String propertyName) {
this.propertyName = propertyName;
}
@Override
@SuppressWarnings({"unchecked"})
public Object mapToObjectFromFullMap(
EntityInstantiator entityInstantiator, Map data,
Object dataObject, Number revision) {
return data.get( propertyName );
}
@Override
public void mapToMapFromObject(
SessionImplementor session,
Map idData,
Map data,
Object obj) {
idData.put( propertyName, obj );
}
@Override
public void addMiddleEqualToQuery(
Parameters parameters,
String idPrefix1,
String prefix1,
String idPrefix2,
String prefix2) {
throw new UnsupportedOperationException( "Cannot use this mapper with a middle table!" );
}
}