How to use

seed

method

in

org.hibernate.engine.internal.Versioning

fields[versionProperty] = seed( versionType, session );
return true;

fields[versionProperty] = seed( versionType, session );
return true;

fields[versionProperty] = seed( versionType, session );
return true;

/**
 * Create an initial optimistic locking value according the {@link VersionSupport}
 * contract for the version property <b>if required</b> and inject it into
 * the snapshot state.
 *
 * @return True if we injected a new version value into the fields array; false
 * otherwise.
 */
public static boolean seedVersion(
    Object[] fields,
    VersionDescriptor versionDescriptor,
    SharedSessionContractImplementor session) {
  final int versionPosition = versionDescriptor.getStateArrayPosition();
  final Object initialVersion = fields[ versionPosition ];
  if (
    initialVersion==null ||
    // This next bit is to allow for both unsaved-value="negative"
    // and for "older" behavior where version number did not get
    // seeded if it was already set in the object
    // TODO: shift it into unsaved-value strategy
    ( (initialVersion instanceof Number) && ( (Number) initialVersion ).longValue()<0 )
  ) {
    fields[versionPosition] = seed( versionDescriptor.getVersionSupport(), session );
    return true;
  }
  LOG.tracev( "Using initial version: {0}", initialVersion );
  return false;
}