/* * Licensed to CRATE Technology GmbH ("Crate") under one or more contributor * license agreements. See the NOTICE file distributed with this work for * additional information regarding copyright ownership. Crate licenses * this file to you under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. You may * obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. * * However, if you have executed another commercial license agreement * with Crate these terms will supersede the license and you may use the * software solely pursuant to the terms of the relevant commercial agreement. */ package io.crate.core.collections; import io.crate.core.StringUtils; import org.elasticsearch.common.Nullable; import java.util.List; import java.util.Map; public class StringObjectMaps { public static @Nullable Object getByPath(Map<String, Object> map, String path) { assert path != null : "path should not be null"; Object tmp; List<String> splittedPath = StringUtils.PATH_SPLITTER.splitToList(path); for (String pathElement : splittedPath.subList(0, splittedPath.size() - 1)) { tmp = map.get(pathElement); if (tmp != null && tmp instanceof Map) { map = (Map<String, Object>) tmp; } else { break; } } if (map != null) { // get last path element return map.get(splittedPath.get(splittedPath.size() - 1)); } return null; } public static Object fromMapByPath(Map value, List<String> path) { Map map = value; Object tmp = null; for (String s : path) { tmp = map.get(s); if (tmp instanceof Map) { map = (Map) tmp; } else { break; } } return tmp; } }