// Create MappingNamespace for maps.
EntityResolver entityResolver = new EntityResolver(Collections.singleton(dataMap));
dataMap.setNamespace(entityResolver);
for (int i = 0; i < additionalDataMaps.length; i++) {
entityResolver.addDataMap(additionalDataMaps[i]);
additionalDataMaps[i].setNamespace(entityResolver);
}
Collection allEntities = dataMap.getObjEntities();
List filteredEntities = new ArrayList(allEntities.size());