org.jboss.marshalling.ClassTable 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;
import java.io.IOException;
/**
* A lookup mechanism for predefined classes. Some marshallers can use this to
* avoid sending lengthy class descriptor information.
*/
public interface ClassTable {
/**
* Determine whether the given class reference is a valid predefined reference.
*
* @param clazz the candidate class
* @return the class writer, or {@code null} to use the default mechanism
* @throws IOException if an I/O error occurs
*/
Writer getClassWriter(Class clazz) throws IOException;
/**
* Read a class from the stream. The class will have been written by the
* {@link #getClassWriter(Class)} method's {@code Writer} instance, as defined above.
*
* @param unmarshaller the unmarshaller to read from
* @return the class
* @throws IOException if an I/O error occurs
* @throws ClassNotFoundException if a class could not be found
*/
Class readClass(Unmarshaller unmarshaller) throws IOException, ClassNotFoundException;
/**
* The class writer for a specific class.
* @apiviz.exclude
*/
interface Writer {
/**
* Write the predefined class reference to the stream.
*
* @param marshaller the marshaller to write to
* @param clazz the class reference to write
* @throws IOException if an I/O error occurs
*/
void writeClass(Marshaller marshaller, Class clazz) throws IOException;
}
}