How to use

getDefaultValue

method

in

org.hibernate.engine.spi.IdentifierValue

@Override
public void resetIdentifier(
    Object entity,
    Serializable currentId,
    Object currentVersion,
    SharedSessionContractImplementor session) {
  //noinspection StatementWithEmptyBody
  if ( entityMetamodel.getIdentifierProperty().getIdentifierGenerator() instanceof Assigned ) {
  }
  else {
    //reset the id
    Serializable result = entityMetamodel.getIdentifierProperty()
        .getUnsavedValue()
        .getDefaultValue( currentId );
    setIdentifier( entity, result, session );
    //reset the version
    VersionProperty versionProperty = entityMetamodel.getVersionProperty();
    if ( entityMetamodel.isVersioned() ) {
      setPropertyValue(
          entity,
          entityMetamodel.getVersionPropertyIndex(),
          versionProperty.getUnsavedValue().getDefaultValue( currentVersion )
      );
    }
  }
}

/**
 * {@inheritDoc}
 */
public void resetIdentifier(
    Object entity,
    Serializable currentId,
    Object currentVersion,
    SessionImplementor session) {
  if ( entityMetamodel.getIdentifierProperty().getIdentifierGenerator() instanceof Assigned ) {
  }
  else {
    //reset the id
    Serializable result = entityMetamodel.getIdentifierProperty()
        .getUnsavedValue()
        .getDefaultValue( currentId );
    setIdentifier( entity, result, session );
    //reset the version
    VersionProperty versionProperty = entityMetamodel.getVersionProperty();
    if ( entityMetamodel.isVersioned() ) {
      setPropertyValue(
          entity,
          entityMetamodel.getVersionPropertyIndex(),
          versionProperty.getUnsavedValue().getDefaultValue( currentVersion )
      );
    }
  }
}

/**
 * {@inheritDoc}
 */
public void resetIdentifier(
    Object entity,
    Serializable currentId,
    Object currentVersion,
    SessionImplementor session) {
  if ( entityMetamodel.getIdentifierProperty().getIdentifierGenerator() instanceof Assigned ) {
  }
  else {
    //reset the id
    Serializable result = entityMetamodel.getIdentifierProperty()
        .getUnsavedValue()
        .getDefaultValue( currentId );
    setIdentifier( entity, result, session );
    //reset the version
    VersionProperty versionProperty = entityMetamodel.getVersionProperty();
    if ( entityMetamodel.isVersioned() ) {
      setPropertyValue(
          entity,
          entityMetamodel.getVersionPropertyIndex(),
          versionProperty.getUnsavedValue().getDefaultValue( currentVersion )
      );
    }
  }
}