001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.activemq.store.kahadb.disk.util;
018
019/**
020 * Convenience base class for Marshaller implementations which do not deepCopy and
021 * which use variable size encodings.
022 * 
023 * @author chirino
024 * @param <T>
025 */
026abstract public class VariableMarshaller<T> implements Marshaller<T> {
027
028    public int getFixedSize() {
029        return -1;
030    }
031
032    public boolean isDeepCopySupported() {
033        return false;
034    }
035
036    public T deepCopy(T source) {
037        throw new UnsupportedOperationException();
038    }
039
040}