/**
* Copyright 2006 Webmedia Group Ltd.
*
* Licensed 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.
**/
package org.araneaframework.uilib.list.util;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
public class MapUtil {
public static final String MAP_KEY_SEPARATOR = ".";
public static Object getByFullKey(Map map, String key) {
if (key.indexOf(MAP_KEY_SEPARATOR) != -1) {
String subMapKey = key.substring(0, key.indexOf(MAP_KEY_SEPARATOR));
String nextKey = key.substring(subMapKey.length() + 1);
return getByFullKey((Map) map.get(subMapKey), nextKey);
}
return map.get(key);
}
public static Object putByFullKey(Map map, String key, Object value) {
if (key.indexOf(MAP_KEY_SEPARATOR) != -1) {
String subMapKey = key.substring(0, key.indexOf(MAP_KEY_SEPARATOR));
String nextKey = key.substring(subMapKey.length() + 1);
Map subMap;
if (map.containsKey(subMapKey)) {
subMap = (Map) map.get(subMapKey);
} else {
subMap = new HashMap();
map.put(subMapKey, subMap);
}
return putByFullKey(subMap, nextKey, value);
}
return map.put(key, value);
}
public static Map convertToHierachyMap(Map plainMap) {
Map result = new HashMap();
Iterator i = plainMap.entrySet().iterator();
while (i.hasNext()) {
Entry entry = (Entry) i.next();
putByFullKey(result, (String) entry.getKey(), entry.getValue());
}
return result;
}
public static Map convertToPlainMap(Map hierarchyMap) {
return convertToPlainMap(hierarchyMap, "");
}
private static Map convertToPlainMap(Map hierarchyMap, String keyPrefix) {
Map result = new HashMap();
Iterator i = hierarchyMap.entrySet().iterator();
while (i.hasNext()) {
Entry entry = (Entry) i.next();
String key = (String) entry.getKey();
Object value = entry.getValue();
if (value instanceof Map) {
result.putAll(convertToPlainMap((Map) value, key + MAP_KEY_SEPARATOR));
} else {
result.put(keyPrefix + key, value);
}
}
return result;
}
}