src/java/org/apache/cassandra/utils/DefaultValue.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.cassandra.utils;


public class DefaultValue<T>
{
    private final T originalValue;
    private T currentValue;

    public DefaultValue(T value)
    {
        originalValue = value;
        currentValue = value;
    }

    public T value()
    {
        return currentValue;
    }

    public void set(T i)
    {
        currentValue = i;
    }

    public void reset()
    {
        currentValue = originalValue;
    }

    public boolean isModified()
    {
        return originalValue != currentValue;
    }
}