/*
* Copyright 2002-2017 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.springframework.http.codec.xml;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import org.springframework.util.Assert;
/**
* Holder for {@link JAXBContext} isntances.
*
* @author Arjen Poutsma
* @since 5.0
*/
final class JaxbContextContainer {
private final ConcurrentMap<Class<?>, JAXBContext> jaxbContexts = new ConcurrentHashMap<>(64);
public Marshaller createMarshaller(Class<?> clazz) throws JAXBException {
JAXBContext jaxbContext = getJaxbContext(clazz);
return jaxbContext.createMarshaller();
}
public Unmarshaller createUnmarshaller(Class<?> clazz) throws JAXBException {
JAXBContext jaxbContext = getJaxbContext(clazz);
return jaxbContext.createUnmarshaller();
}
private JAXBContext getJaxbContext(Class<?> clazz) throws JAXBException {
Assert.notNull(clazz, "Class must not be null");
JAXBContext jaxbContext = this.jaxbContexts.get(clazz);
if (jaxbContext == null) {
jaxbContext = JAXBContext.newInstance(clazz);
this.jaxbContexts.putIfAbsent(clazz, jaxbContext);
}
return jaxbContext;
}
}