/*******************************************************************************
*Copyright (c) 2009 Eucalyptus Systems, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, only version 3 of the License.
*
*
* This file is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Please contact Eucalyptus Systems, Inc., 130 Castilian
* Dr., Goleta, CA 93101 USA or visit <http://www.eucalyptus.com/licenses/>
* if you need additional information or have any questions.
*
* This file may incorporate work covered under the following copyright and
* permission notice:
*
* Software License Agreement (BSD License)
*
* Copyright (c) 2008, Regents of the University of California
* All rights reserved.
*
* Redistribution and use of this software in source and binary forms, with
* or without modification, are permitted provided that the following
* conditions are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. USERS OF
* THIS SOFTWARE ACKNOWLEDGE THE POSSIBLE PRESENCE OF OTHER OPEN SOURCE
* LICENSED MATERIAL, COPYRIGHTED MATERIAL OR PATENTED MATERIAL IN THIS
* SOFTWARE, AND IF ANY SUCH MATERIAL IS DISCOVERED THE PARTY DISCOVERING
* IT MAY INFORM DR. RICH WOLSKI AT THE UNIVERSITY OF CALIFORNIA, SANTA
* BARBARA WHO WILL THEN ASCERTAIN THE MOST APPROPRIATE REMEDY, WHICH IN
* THE REGENTS’ DISCRETION MAY INCLUDE, WITHOUT LIMITATION, REPLACEMENT
* OF THE CODE SO IDENTIFIED, LICENSING OF THE CODE SO IDENTIFIED, OR
* WITHDRAWAL OF THE CODE CAPABILITY TO THE EXTENT NEEDED TO COMPLY WITH
* ANY SUCH LICENSES OR RIGHTS.
*******************************************************************************/
package edu.ucsb.eucalyptus.admin.client.extensions.store;
import java.util.List;
import java.util.ArrayList;
import com.google.gwt.core.client.GWT;
import com.google.gwt.json.client.JSONNumber;
import com.google.gwt.json.client.JSONString;
import com.google.gwt.json.client.JSONValue;
import com.google.gwt.json.client.JSONObject;
import com.google.gwt.json.client.JSONParser;
import com.google.gwt.json.client.JSONException;
import com.google.gwt.json.client.JSONBoolean;
import com.google.gwt.json.client.JSONArray;
public class JSONUtil {
static public JSONObject parseObject(String data) {
JSONObject jsonObject = null;
try {
JSONValue jsonValue = JSONParser.parse(data);
jsonObject = jsonValue.isObject();
} catch (JSONException e) {
GWT.log("Tried to parse bad JSON data", e);
JSONValue jsonValue = JSONParser.parse(
"{\"error-message\": \"Received bad JSON data.\"}");
jsonObject = jsonValue.isObject();
}
return jsonObject;
}
static String asString(JSONValue value) {
if (value != null) {
JSONString string = value.isString();
if (string != null) {
return string.stringValue();
}
}
return null;
}
static Integer asInteger(JSONValue value) {
if (value != null) {
JSONNumber number = value.isNumber();
if (number != null) {
return (int)number.doubleValue();
}
}
return null;
}
static int asInt(JSONValue value, int defaultResult) {
if (value != null) {
JSONNumber number = value.isNumber();
if (number != null) {
return (int)number.doubleValue();
}
}
return defaultResult;
}
static boolean asBoolean(JSONValue value, boolean defaultResult) {
if (value != null) {
JSONBoolean bool = value.isBoolean();
if (bool != null) {
return bool.booleanValue();
}
}
return defaultResult;
}
public static interface ObjectAdapter<T> {
T adaptObject(JSONObject object);
}
public static <T> List<T> adaptArray(JSONValue arrayValue,
ObjectAdapter<T> adapter) {
List<T> result = new ArrayList<T>();
if (arrayValue != null && arrayValue.isArray() != null) {
JSONArray array = arrayValue.isArray();
for (int i = 0; i != array.size(); i++) {
JSONObject object = array.get(i).isObject();
if (object != null) {
result.add(adapter.adaptObject(object));
}
}
}
return result;
}
}