2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2018 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.onap.policy.drools.pooling.extractor;
24 import org.slf4j.Logger;
25 import org.slf4j.LoggerFactory;
28 * Used to extract an object stored in a map.
30 public class MapExtractor implements Extractor {
32 private static final Logger logger = LoggerFactory.getLogger(MapExtractor.class);
35 * Key to the item to extract from the map.
37 private final String key;
42 * @param key key to the item to extract from the map
44 public MapExtractor(String key) {
49 public Object extract(Object object) {
51 if (object instanceof Map) {
52 Map<?, ?> map = (Map<?, ?>) object;
57 logger.warn("expecting a map, instead of {}", object.getClass());