org.jboss.marshalling.AnnotationClassExternalizerFactory Maven / Gradle / Ivy
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* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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.jboss.marshalling;
/**
* An externalizer factory which looks for the presence of the {@link org.jboss.marshalling.Externalize Externalize} annotation.
*/
public class AnnotationClassExternalizerFactory implements ClassExternalizerFactory {
/**
* Construct a new instance.
*/
public AnnotationClassExternalizerFactory() {
}
/** {@inheritDoc} */
public Externalizer getExternalizer(final Class type) {
final Externalize ann = type.getAnnotation(Externalize.class);
if (ann == null) {
return null;
} else {
try {
return ann.value().newInstance();
} catch (Exception e) {
throw new IllegalArgumentException("Cannot instantiate externalizer for " + type, e);
}
}
}
}