private List<ObjectAdapter> getInstances(final ObjectData patternData, final PersistenceQueryBuiltIn persistenceQuery) {
final ObjectDataVector data = dataManager.getInstances(patternData);
final List<ObjectAdapter> instances = Lists.newArrayList();
for (int i = 0; i < data.size(); i++) {
final ObjectData instanceData = data.element(i);
if(LOG.isDebugEnabled()) {
LOG.debug("instance data " + instanceData);
}
final RootOid oid = instanceData.getRootOid();