| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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. |
| */ |
| |
| package org.apache.sqoop.util; |
| |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.codehaus.jackson.JsonParseException; |
| import org.codehaus.jackson.map.JsonMappingException; |
| import org.codehaus.jackson.map.ObjectMapper; |
| import org.codehaus.jackson.type.TypeReference; |
| import org.json.JSONObject; |
| |
| public class SqoopJsonUtil { |
| |
| public static final Log LOG = LogFactory |
| .getLog(SqoopJsonUtil.class.getName()); |
| |
| private SqoopJsonUtil() { |
| } |
| |
| public static String getJsonStringforMap(Map<String, String> map) { |
| JSONObject pathPartMap = new JSONObject(map); |
| return pathPartMap.toString(); |
| } |
| |
| public static Map<String, String> getMapforJsonString(String mapJsonStr) { |
| LOG.debug("Passed mapJsonStr ::" + mapJsonStr + " to parse"); |
| final Map<String, String> result; |
| try { |
| if (isEmptyJSON(mapJsonStr)) { |
| result = Collections.emptyMap(); |
| } else { |
| ObjectMapper mapper = new ObjectMapper(); |
| result = mapper.readValue(mapJsonStr, |
| new TypeReference<HashMap<String, String>>() { |
| }); |
| } |
| return result; |
| } catch (JsonParseException e) { |
| LOG.error("JsonParseException:: Illegal json to parse into map :" |
| + mapJsonStr + e.getMessage()); |
| throw new IllegalArgumentException("Illegal json to parse into map :" |
| + mapJsonStr + e.getMessage(), e); |
| } catch (JsonMappingException e) { |
| LOG.error("JsonMappingException:: Illegal json to parse into map :" |
| + mapJsonStr + e.getMessage()); |
| throw new IllegalArgumentException("Illegal json to parse into map :" |
| + mapJsonStr + e.getMessage(), e); |
| } catch (IOException e) { |
| LOG.error("IOException while parsing json into map :" + mapJsonStr |
| + e.getMessage()); |
| throw new IllegalArgumentException( |
| "IOException while parsing json into map :" + mapJsonStr |
| + e.getMessage(), e); |
| } |
| } |
| |
| public static boolean isEmptyJSON(String jsonStr) { |
| if (null == jsonStr || "".equals(jsonStr) || "{}".equals(jsonStr)) { |
| return true; |
| } else { |
| return false; |
| } |
| } |
| } |