org.jbpm.xes.XESLogMarshaller Maven / Gradle / Ivy
/*
* Copyright 2019 Red Hat, Inc. and/or its affiliates.
*
* 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.jbpm.xes;
import java.io.ByteArrayOutputStream;
import java.io.StringReader;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import org.jbpm.xes.model.LogType;
import org.jbpm.xes.model.ObjectFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class XESLogMarshaller {
private static final Logger LOGGER = LoggerFactory.getLogger(XESLogMarshaller.class);
private JAXBContext context;
public XESLogMarshaller() {
try {
context = JAXBContext.newInstance("org.jbpm.xes.model");
} catch (JAXBException ex) {
LOGGER.error("Error trying to create XES marshaller: {}",
ex.getMessage(),
ex);
throw new RuntimeException(ex);
}
}
public String marshall(LogType log) throws Exception {
Marshaller m = context.createMarshaller();
m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT,
Boolean.TRUE);
final ByteArrayOutputStream stream = new ByteArrayOutputStream();
final ObjectFactory factory = new ObjectFactory();
m.marshal(factory.createLog(log),
stream);
String xml = stream.toString();
LOGGER.debug("\n" + xml);
return xml;
}
public LogType unmarshall(String xml) throws Exception {
Unmarshaller unmarshaller = context.createUnmarshaller();
JAXBElement log = (JAXBElement) unmarshaller.unmarshal(new StringReader(xml));
return log.getValue();
}
}