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org.hibernate.envers.internal.entities.mapper.MultiDynamicComponentMapper 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;
import java.util.Map;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.envers.boot.internal.EnversService;
import org.hibernate.envers.internal.entities.PropertyData;
import org.hibernate.envers.internal.reader.AuditReaderImplementor;
import org.hibernate.envers.internal.tools.MapProxyTool;
import org.hibernate.envers.internal.tools.StringTools;
/**
* Multi mapper for dynamic components (it knows that component is a map, not a class)
*
* @author Lukasz Zuchowski (author at zuchos dot com)
*/
public class MultiDynamicComponentMapper extends MultiPropertyMapper {
private PropertyData dynamicComponentData;
public MultiDynamicComponentMapper(PropertyData dynamicComponentData) {
this.dynamicComponentData = dynamicComponentData;
}
@Override
public boolean mapToMapFromEntity(
SessionImplementor session,
Map data,
Object newObj,
Object oldObj) {
boolean ret = false;
for ( Map.Entry entry : properties.entrySet() ) {
final PropertyData propertyData = entry.getKey();
final PropertyMapper propertyMapper = entry.getValue();
if ( newObj == null && oldObj == null ) {
return false;
}
Object newValue = newObj == null ? null : getValue( newObj, propertyData );
Object oldValue = oldObj == null ? null : getValue( oldObj, propertyData );
ret |= propertyMapper.mapToMapFromEntity( session, data, newValue, oldValue );
}
return ret;
}
private Object getValue(Object newObj, PropertyData propertyData) {
return ( (Map) newObj ).get( propertyData.getBeanName() );
}
@Override
public boolean map(
SessionImplementor session,
Map data,
String[] propertyNames,
Object[] newState,
Object[] oldState) {
boolean ret = false;
for ( int i = 0; i < propertyNames.length; i++ ) {
final String propertyName = propertyNames[i];
Map propertyDatas = getPropertyDatas();
if ( propertyDatas.containsKey( propertyName ) ) {
final PropertyMapper propertyMapper = properties.get( propertyDatas.get( propertyName ) );
final Object newObj = getAtIndexOrNull( newState, i );
final Object oldObj = getAtIndexOrNull( oldState, i );
ret |= propertyMapper.mapToMapFromEntity( session, data, newObj, oldObj );
propertyMapper.mapModifiedFlagsToMapFromEntity( session, data, newObj, oldObj );
}
}
return ret;
}
@Override
public void mapModifiedFlagsToMapFromEntity(
SessionImplementor session,
Map data,
Object newObj,
Object oldObj) {
for ( Map.Entry entry : properties.entrySet() ) {
final PropertyData propertyData = entry.getKey();
final PropertyMapper propertyMapper = entry.getValue();
if ( newObj == null && oldObj == null ) {
return;
}
Object newValue = newObj == null ? null : getValue( newObj, propertyData );
Object oldValue = oldObj == null ? null : getValue( oldObj, propertyData );
propertyMapper.mapModifiedFlagsToMapFromEntity( session, data, newValue, oldValue );
}
}
@Override
@SuppressWarnings("unchecked")
public void mapToEntityFromMap(
EnversService enversService,
Object obj,
Map data,
Object primaryKey,
AuditReaderImplementor versionsReader,
Number revision) {
Object mapProxy = MapProxyTool.newInstanceOfBeanProxyForMap(
generateClassName( data, dynamicComponentData.getBeanName() ),
(Map) obj,
properties.keySet(),
enversService.getClassLoaderService()
);
for ( PropertyMapper mapper : properties.values() ) {
mapper.mapToEntityFromMap( enversService, mapProxy, data, primaryKey, versionsReader, revision );
}
}
private String generateClassName(Map data, String dynamicComponentPropertyName) {
return ( data.get( "$type$" ) + StringTools.capitalizeFirst( dynamicComponentPropertyName ) ).replaceAll(
"_",
""
);
}
}