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JaVers - object auditing and diff framework for Java
package org.javers.core.graph;
import org.javers.common.collections.Lists;
import org.javers.core.metamodel.object.*;
import org.javers.core.metamodel.type.ManagedType;
import org.javers.core.metamodel.type.TypeMapper;
import java.util.List;
import java.util.Optional;
/**
* @author bartosz walacik
*/
public class LiveCdoFactory {
private final GlobalIdFactory globalIdFactory;
private ObjectAccessHook objectAccessHook;
private TypeMapper typeMapper;
private ObjectHasher objectHasher;
LiveCdoFactory(GlobalIdFactory globalIdFactory, ObjectAccessHook objectAccessHook, TypeMapper typeMapper, ObjectHasher objectHasher) {
this.globalIdFactory = globalIdFactory;
this.objectAccessHook = objectAccessHook;
this.typeMapper = typeMapper;
this.objectHasher = objectHasher;
}
ValueObjectId generateValueObjectHash(LiveCdo valueObject, List descendantVOs) {
List objectsToBeHashed = Lists.immutableListOf(descendantVOs, valueObject);
String newHash = objectHasher.hash(objectsToBeHashed);
ValueObjectIdWithHash id = (ValueObjectIdWithHash) valueObject.getGlobalId();
return id.applyHash(newHash);
}
LiveCdo create(Object cdo, OwnerContext owner) {
GlobalId globalId = globalIdFactory.createId(cdo, owner);
Optional objectAccessor = objectAccessHook.createAccessor(cdo);
Class targetClass = objectAccessor.map((p) -> p.getTargetClass()).orElse(cdo.getClass());
ManagedType managedType = typeMapper.getJaversManagedType(targetClass);
if (objectAccessor.isPresent()) {
return new LazyCdoWrapper(objectAccessor.get().getObjectSupplier(), globalId, managedType);
}
else {
return new LiveCdoWrapper(cdo, globalId, managedType);
}
}
GlobalId createId(Object cdo, OwnerContext owner) {
return globalIdFactory.createId(cdo, owner);
}
GlobalIdFactory getGlobalIdFactory() {
return globalIdFactory;
}
}