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/**
 *
 * Copyright (C) 2010 Cloud Conscious, LLC. 
 *
 * ====================================================================
 * 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 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.vcloud.domain.network;

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

/**
 * The IpRange element defines a range of IP addresses available on a network.
 * 
 */
public class IpRange {
   private final String startAddress;
   private final String endAddress;

   public IpRange(String startAddress, String endAddress) {
      this.startAddress = checkNotNull(startAddress, "startAddress");
      this.endAddress = checkNotNull(endAddress, "endAddress");
   }

   /**
    * @return lowest IP address in the range
    * 
    * @since vcloud api 0.9
    */
   public String getStartAddress() {
      return startAddress;
   }

   /**
    * @return highest IP address in the range
    * 
    * @since vcloud api 0.9
    */
   public String getEndAddress() {
      return endAddress;
   }

   @Override
   public int hashCode() {
      final int prime = 31;
      int result = 1;
      result = prime * result + ((endAddress == null) ? 0 : endAddress.hashCode());
      result = prime * result + ((startAddress == null) ? 0 : startAddress.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;
      IpRange other = (IpRange) obj;
      if (endAddress == null) {
         if (other.endAddress != null)
            return false;
      } else if (!endAddress.equals(other.endAddress))
         return false;
      if (startAddress == null) {
         if (other.startAddress != null)
            return false;
      } else if (!startAddress.equals(other.startAddress))
         return false;
      return true;
   }

   @Override
   public String toString() {
      return "[startAddress=" + startAddress + ", endAddress=" + endAddress + "]";
   }
}