/*
* Copyright [2013] [Cloud4SOA, www.cloud4soa.eu]
*
*
* 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.
*/
/*
* Copyright 2009-2012 the original author or authors.
*
* 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.cloudfoundry.client.lib.util;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.cloudfoundry.client.lib.domain.CloudResource;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.type.TypeReference;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Some JSON helper utilities used by the Cloud Foundry Java client.
*
* @author Thomas Risberg
*
*/
public class JsonUtil {
protected static final Log logger = LogFactory.getLog(JsonUtil.class);
private final static ObjectMapper mapper = new ObjectMapper();
public static Map<String, Object> convertJsonToMap(String json) {
Map<String, Object> retMap = new HashMap<String, Object>();
if (json != null) {
try {
retMap = mapper.readValue(json, new TypeReference<Map<String, Object>>() {});
} catch (IOException e) {
logger.warn("Error while reading Java Map from JSON response: " + json, e);
}
}
return retMap;
}
public static List<String> convertJsonToList(String json) {
List<String> retList = new ArrayList<String>();
if (json != null) {
try {
retList = mapper.readValue(json, new TypeReference<List<String>>() {});
} catch (IOException e) {
logger.warn("Error while reading Java List from JSON response: " + json, e);
}
}
return retList;
}
public static List<CloudResource> convertJsonToCloudResourceList(String json) {
List<CloudResource> retList = new ArrayList<CloudResource>();
if (json != null) {
try {
retList = mapper.readValue(json, new TypeReference<List<CloudResource>>() {});
} catch (IOException e) {
logger.warn("Error while reading Java List from JSON response: " + json, e);
}
}
return retList;
}
public static String convertToJson(Object value) {
if (mapper.canSerialize(value.getClass())) {
try {
return mapper.writeValueAsString(value);
} catch (IOException e) {
logger.warn("Error while serializing " + value + " to JSON", e);
return null;
}
}
else {
throw new IllegalArgumentException("Value of type " + value.getClass().getName() +
" can not be serialized to JSON.");
}
}
}