//
// HANDLE RESULT SETS
//
@Override
public List<Object> handleResultSets(Statement stmt) throws SQLException {
  ErrorContext.instance().activity("handling results").object(mappedStatement.getId());
  final List<Object> multipleResults = new ArrayList<Object>();
  int resultSetCount = 0;
  ResultSetWrapper rsw = getFirstResultSet(stmt);
  List<ResultMap> resultMaps = mappedStatement.getResultMaps();
  int resultMapCount = resultMaps.size();
  validateResultMapsCount(rsw, resultMapCount);
  while (rsw != null && resultMapCount > resultSetCount) {
    ResultMap resultMap = resultMaps.get(resultSetCount);
    handleResultSet(rsw, resultMap, multipleResults, null);
    rsw = getNextResultSet(stmt);
    cleanUpAfterHandlingResultSet();
    resultSetCount++;
  }
  String[] resultSets = mappedStatement.getResultSets();
  if (resultSets != null) {
    while (rsw != null && resultSetCount < resultSets.length) {
      ResultMapping parentMapping = nextResultMaps.get(resultSets[resultSetCount]);
      if (parentMapping != null) {
        String nestedResultMapId = parentMapping.getNestedResultMapId();
        ResultMap resultMap = configuration.getResultMap(nestedResultMapId);
        handleResultSet(rsw, resultMap, null, parentMapping);
      }
      rsw = getNextResultSet(stmt);
      cleanUpAfterHandlingResultSet();
      resultSetCount++;
    }
  }
  return collapseSingleResultList(multipleResults);
}

//
// GET VALUE FROM ROW FOR SIMPLE RESULT MAP
//
private Object getRowValue(ResultSetWrapper rsw, ResultMap resultMap) throws SQLException {
  final ResultLoaderMap lazyLoader = new ResultLoaderMap();
  Object rowValue = createResultObject(rsw, resultMap, lazyLoader, null);
  if (rowValue != null && !hasTypeHandlerForResultObject(rsw, resultMap.getType())) {
    final MetaObject metaObject = configuration.newMetaObject(rowValue);
    boolean foundValues = this.useConstructorMappings;
    if (shouldApplyAutomaticMappings(resultMap, false)) {
      foundValues = applyAutomaticMappings(rsw, resultMap, metaObject, null) || foundValues;
    }
    foundValues = applyPropertyMappings(rsw, resultMap, metaObject, lazyLoader, null) || foundValues;
    foundValues = lazyLoader.size() > 0 || foundValues;
    rowValue = (foundValues || configuration.isReturnInstanceForEmptyRow()) ? rowValue : null;
  }
  return rowValue;
}

private boolean applyAutomaticMappings(ResultSetWrapper rsw, ResultMap resultMap, MetaObject metaObject, String columnPrefix) throws SQLException {
  List<UnMappedColumnAutoMapping> autoMapping = createAutomaticMappings(rsw, resultMap, metaObject, columnPrefix);
  boolean foundValues = false;
  if (!autoMapping.isEmpty()) {
    for (UnMappedColumnAutoMapping mapping : autoMapping) {
      final Object value = mapping.typeHandler.getResult(rsw.getResultSet(), mapping.column);
      if (value != null) {
        foundValues = true;
      }
      if (value != null || (configuration.isCallSettersOnNulls() && !mapping.primitive)) {
        // gcode issue #377, call setter on nulls (value is not 'found')
        metaObject.setValue(mapping.property, value);
      }
    }
  }
  return foundValues;
}

private List<UnMappedColumnAutoMapping> createAutomaticMappings(ResultSetWrapper rsw, ResultMap resultMap, MetaObject metaObject, String columnPrefix) throws SQLException {
  final String mapKey = resultMap.getId() + ":" + columnPrefix;
  List<UnMappedColumnAutoMapping> autoMapping = autoMappingsCache.get(mapKey);
  if (autoMapping == null) {
    autoMapping = new ArrayList<UnMappedColumnAutoMapping>();
    final List<String> unmappedColumnNames = rsw.getUnmappedColumnNames(resultMap, columnPrefix);
    for (String columnName : unmappedColumnNames) {
      String propertyName = columnName;
      if (columnPrefix != null && !columnPrefix.isEmpty()) {
        // When columnPrefix is specified,
        // ignore columns without the prefix.
        if (columnName.toUpperCase(Locale.ENGLISH).startsWith(columnPrefix)) {
          propertyName = columnName.substring(columnPrefix.length());
        } else {
          continue;
        }
      }
      final String property = metaObject.findProperty(propertyName, configuration.isMapUnderscoreToCamelCase());
      if (property != null && metaObject.hasSetter(property)) {
        if (resultMap.getMappedProperties().contains(property)) {
          continue;
        }
        final Class<?> propertyType = metaObject.getSetterType(property);
        if (typeHandlerRegistry.hasTypeHandler(propertyType, rsw.getJdbcType(columnName))) {
          final TypeHandler<?> typeHandler = rsw.getTypeHandler(propertyType, columnName);
          autoMapping.add(new UnMappedColumnAutoMapping(columnName, property, typeHandler, propertyType.isPrimitive()));
        } else {
          configuration.getAutoMappingUnknownColumnBehavior()
              .doAction(mappedStatement, columnName, property, propertyType);
        }
      } else {
        configuration.getAutoMappingUnknownColumnBehavior()
            .doAction(mappedStatement, columnName, (property != null) ? property : propertyName, null);
      }
    }
    autoMappingsCache.put(mapKey, autoMapping);
  }
  return autoMapping;
}

final String property = metaObject.findProperty(propertyName, configuration.isMapUnderscoreToCamelCase());