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/*
 * 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.jclouds.ec2.domain;

import static shaded.com.google.common.base.Preconditions.checkNotNull;

import java.util.Set;

import shaded.com.google.common.collect.Iterables;
import shaded.com.google.common.collect.Sets;

/**
 * 
 * @see 
 */
public class AvailabilityZoneInfo implements Comparable {

   private final String zone;
   private final String state;
   private final String region;
   private final Set messages = Sets.newHashSet();

   public AvailabilityZoneInfo(String zone, String zoneState,
            String region, Iterable messages) {
      this.zone = checkNotNull(zone, "zone");
      this.state = checkNotNull(zoneState, "zoneState");
      this.region = checkNotNull(region, "region");
      Iterables.addAll(this.messages, checkNotNull(messages, "messages"));
   }

   /**
    * the Availability Zone.
    */
   public String getZone() {
      return zone;
   }

   /**
    * State of the Availability Zone.
    */
   public String getState() {
      return state;
   }

   /**
    * Name of the Region.
    */
   public String getRegion() {
      return region;
   }

   /**
    * Messages
    */
   public Set getMessages() {
      return messages;
   }

   @Override
   public int hashCode() {
      final int prime = 31;
      int result = 1;
      result = prime * result + ((messages == null) ? 0 : messages.hashCode());
      result = prime * result + ((region == null) ? 0 : region.hashCode());
      result = prime * result + ((state == null) ? 0 : state.hashCode());
      result = prime * result + ((zone == null) ? 0 : zone.hashCode());
      return result;
   }

   @Override
   public boolean equals(Object obj) {
      if (this == obj)
         return true;
      if (obj == null)
         return false;
      if (getClass() != obj.getClass())
         return false;
      AvailabilityZoneInfo other = (AvailabilityZoneInfo) obj;
      if (messages == null) {
         if (other.messages != null)
            return false;
      } else if (!messages.equals(other.messages))
         return false;
      if (region == null) {
         if (other.region != null)
            return false;
      } else if (!region.equals(other.region))
         return false;
      if (state == null) {
         if (other.state != null)
            return false;
      } else if (!state.equals(other.state))
         return false;
      if (zone == null) {
         if (other.zone != null)
            return false;
      } else if (!zone.equals(other.zone))
         return false;
      return true;
   }

   @Override
   public String toString() {
      return "AvailabilityZoneInfo [messages=" + messages + ", region=" + region + ", state="
               + state + ", zone=" + zone + "]";
   }

   @Override
   public int compareTo(AvailabilityZoneInfo that) {
      return zone.compareTo(that.zone);
   }

}