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A utility Java EE development library

There is a newer version: 1.0.Alpha18

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2013 Red Hat Inc. and/or its affiliates and other contributors
 * as indicated by the @author tags. All rights reserved.
 * See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU Lesser General Public License, v. 2.1.
 * This program is distributed in the hope that it will be useful, but WITHOUT A
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
 * PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License,
 * v.2.1 along with this distribution; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA  02110-1301, USA.
 */
package com.hextremelabs.quickee.cache.inifinispan;

import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.io.Serializable;

/**
 * A placeholder value for storing {@literal null} in a cache.
 *
 * @author Olaf Bergner
 * @since 5.3
 */
final class NullValue implements Serializable {

  /**
   * The serialVersionUID
   */
  private static final long serialVersionUID = 6104836300055942197L;

  static final NullValue NULL = new NullValue();

  /**
   * Create a new NullValue.
   *
   */
  private NullValue() {
    // Intentionally left blank
  }

  public static class Externalizer implements Serializable {

    /**
     * The serialVersionUID
     */
    private static final long serialVersionUID = -6374308529927819177L;

    /**
     * @param output
     * @param object
     * @throws IOException
     * @see org.infinispan.marshall.Externalizer#writeObject(java.io.ObjectOutput, java.lang.Object)
     */
    public void writeObject(ObjectOutput output, NullValue object) throws IOException {
      // Nothing to do?
    }

    /**
     * @param input
     * @return
     * @throws IOException
     * @throws ClassNotFoundException
     * @see org.infinispan.marshall.Externalizer#readObject(java.io.ObjectInput)
     */
    public NullValue readObject(ObjectInput input) throws IOException, ClassNotFoundException {
      return NullValue.NULL;
    }
  }
}