How to use

verifyUsage

method

in

org.eclipse.persistence.descriptors.SelectedFieldsLockingPolicy

/**
 * INTERNAL:
 * Values to be included in the locking mechanism are added to the translation row.
 * For changed fields the normal build row is ok as only changed fields matter.
 */
public void addLockValuesToTranslationRow(ObjectLevelModifyQuery query) throws DatabaseException{
  Object object;
  verifyUsage(query.getSession());
  if (query.isDeleteObjectQuery()) {
    object = query.getObject();
  } else {
    object = query.getBackupClone();
  }
  for (Iterator vectors = getLockFieldsByTable().values().iterator(); vectors.hasNext();) {
    for (Enumeration fields = ((Vector)vectors.next()).elements();
         fields.hasMoreElements();) {
      DatabaseField field = (DatabaseField)fields.nextElement();
      DatabaseMapping mapping = descriptor.getObjectBuilder().getMappingForField(field);
      //Bug5892889, Exception will be thrown if no matched database field found
      if(mapping == null ){
        throw DatabaseException.specifiedLockingFieldsNotFoundInDatabase(field.getQualifiedName());
      }else{
        mapping.writeFromObjectIntoRow(object, query.getTranslationRow(), query.getSession());
      }
    }
  }
}

public void addLockValuesToTranslationRow(ObjectLevelModifyQuery query) throws DatabaseException {
  Object object;
  verifyUsage(query.getSession());
  if (query.isDeleteObjectQuery()) {
    object = query.getObject();

public void addLockValuesToTranslationRow(ObjectLevelModifyQuery query) throws DatabaseException {
  Object object;
  verifyUsage(query.getSession());
  if (query.isDeleteObjectQuery()) {
    object = query.getObject();