/*
 * JBoss, Home of Professional Open Source
 * Copyright 2011 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 is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY 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 along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.infinispan.cdi.interceptor;

import javax.cache.annotation.CacheKey;

import static java.util.Arrays.deepEquals;
import static java.util.Arrays.deepHashCode;
import static java.util.Arrays.deepToString;

/**
 * Default {@link CacheKey} implementation.
 *
 * @author Kevin Pollet <kevin.pollet@serli.com> (C) 2011 SERLI
 */
public class DefaultCacheKey implements CacheKey {

   private static final long serialVersionUID = 4410523928649671768L;

   private final Object[] parameters;
   private final int hashCode;

   public DefaultCacheKey(Object[] parameters) {
      this.parameters = parameters;
      this.hashCode = deepHashCode(parameters);
   }

   @Override
   public boolean equals(Object o) {
      if (this == o) return true;
      if (o == null || getClass() != o.getClass()) return false;

      DefaultCacheKey that = (DefaultCacheKey) o;

      return deepEquals(parameters, that.parameters);
   }

   @Override
   public int hashCode() {
      return this.hashCode;
   }

   @Override
   public String toString() {
      return new StringBuilder()
            .append("DefaultCacheKey{")
            .append("parameters=").append(parameters == null ? null : deepToString(parameters))
            .append(", hashCode=").append(hashCode)
            .append('}')
            .toString();
   }
}