hyracks-core/src/main/java/edu/uci/ics/hyracks/coreops/hadoop/data/AbstractClassBasedDelegate.java

/*
 * Copyright 2009-2010 by The Regents of the University of California
 * 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 from
 * 
 *     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 edu.uci.ics.hyracks.coreops.hadoop.data;

import java.io.ObjectStreamException;
import java.io.Serializable;

public class AbstractClassBasedDelegate<T> implements Serializable {
    private static final long serialVersionUID = 1L;
    private Class<? extends T> klass;
    protected transient T instance;

    public AbstractClassBasedDelegate(Class<? extends T> klass) {
        this.klass = klass;
        init();
    }

    protected Object readResolve() throws ObjectStreamException {
        init();
        return this;
    }

    private void init() {
        try {
            instance = klass.newInstance();
        } catch (InstantiationException e) {
            throw new RuntimeException(e);
        } catch (IllegalAccessException e) {
            throw new RuntimeException(e);
        }
    }
}