/*
* $Id: JsonLibHandler.java 651946 2008-04-27 13:41:38Z apetrelli $
*
* 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.struts2.rest.handler;
import java.io.*;
import java.util.Collection;
import net.sf.json.JSONObject;
import net.sf.json.JsonConfig;
import net.sf.json.JSONArray;
/**
* Handles JSON content using json-lib
*/
public class JsonLibHandler implements ContentTypeHandler {
public void toObject(Reader in, Object target) throws IOException {
StringBuilder sb = new StringBuilder();
char[] buffer = new char[1024];
int len = 0;
while ((len = in.read(buffer)) > 0) {
sb.append(buffer, 0, len);
}
if (target != null && sb.length() > 0 && sb.charAt(0) == '[') {
JSONArray jsonArray = JSONArray.fromObject(sb.toString());
if (target.getClass().isArray()) {
JSONArray.toArray(jsonArray, target, new JsonConfig());
} else {
JSONArray.toList(jsonArray, target, new JsonConfig());
}
} else {
JSONObject jsonObject = JSONObject.fromObject(sb.toString());
JSONObject.toBean(jsonObject, target, new JsonConfig());
}
}
public String fromObject(Object obj, String resultCode, Writer stream) throws IOException {
if (obj != null) {
if (isArray(obj)) {
JSONArray jsonArray = JSONArray.fromObject(obj);
stream.write(jsonArray.toString());
} else {
JSONObject jsonObject = JSONObject.fromObject(obj);
stream.write(jsonObject.toString());
}
}
return null;
}
private boolean isArray(Object obj) {
return obj instanceof Collection || obj.getClass().isArray();
}
public String getContentType() {
return "text/javascript";
}
public String getExtension() {
return "json";
}
}