/*
* 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;
}
}