Null.java

/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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.apache.isis.core.runtime.memento;

import java.io.Serializable;

import org.apache.isis.core.commons.encoding.DataInputExtended;
import org.apache.isis.core.commons.encoding.DataOutputExtended;
import org.apache.isis.core.commons.encoding.Encodable;

public class Null implements Encodable, Serializable {
    private static final long serialVersionUID = 1L;

    public Null() {
        initialized();
    }

    public Null(final DataInputExtended input) {
        initialized();
    }

    @Override
    public void encode(final DataOutputExtended output) {
    }

    private void initialized() {
        // nothing to do
    }

    // ///////////////////////////////////////////////////////
    //
    // ///////////////////////////////////////////////////////

    @Override
    public String toString() {
        return "NULL";
    }

}