/*
* Copyright 2011-2013 HTTL Team.
*
* 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 httl.spi.codecs;
import httl.util.UnsafeByteArrayInputStream;
import httl.util.UnsafeByteArrayOutputStream;
import java.text.ParseException;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.HierarchicalStreamDriver;
import com.thoughtworks.xstream.io.xml.Xpp3Driver;
/**
* Xstream Codec. (SPI, Singleton, ThreadSafe)
*
* @author Liang Fei (liangfei0201 AT gmail DOT com)
*/
public class XstreamCodec extends AbstractXmlCodec {
private static XStream XSTREAM = new XStream(new Xpp3Driver());
public static XStream getXStream() {
return XSTREAM;
}
public static void setDriver(HierarchicalStreamDriver driver) {
XSTREAM = new XStream(driver);
}
public String toString(String key, Object value) {
return XSTREAM.toXML(value);
}
public byte[] toBytes(String key, Object value) {
UnsafeByteArrayOutputStream out = new UnsafeByteArrayOutputStream();
XSTREAM.toXML(value, out);
return out.toByteArray();
}
@SuppressWarnings("unchecked")
public <T> T valueOf(String str, Class<T> type) throws ParseException {
if (str == null) {
return null;
}
if (type == null) {
return (T) XSTREAM.fromXML(str);
}
try {
return (T) XSTREAM.fromXML(str, type.newInstance());
} catch (Exception e) {
throw new RuntimeException(e.getMessage(), e);
}
}
@SuppressWarnings("unchecked")
public <T> T valueOf(byte[] str, Class<T> type) throws ParseException {
if (str == null) {
return null;
}
if (type == null) {
return (T) XSTREAM.fromXML(new UnsafeByteArrayInputStream(str));
}
try {
return (T) XSTREAM.fromXML(new UnsafeByteArrayInputStream(str), type.newInstance());
} catch (Exception e) {
throw new RuntimeException(e.getMessage(), e);
}
}
}