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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.ovf;

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

import java.util.Set;


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

/**
 * 
 * The virtual hardware required by a virtual machine is specified in VirtualHardwareSection.
 * 
 * This specification supports abstract or incomplete hardware descriptions in which only the major
 * devices are described. The hypervisor is allowed to create additional virtual hardware
 * controllers and devices, as long as the required devices listed in the descriptor are realized.
 */
public class VirtualHardwareSection {

   protected final String info;
   protected final System virtualSystem;
   protected final Set resourceAllocations = Sets.newLinkedHashSet();

   public VirtualHardwareSection(String info, System virtualSystem,
            Iterable resourceAllocations) {
      this.info = info;
      this.virtualSystem = virtualSystem;
      Iterables.addAll(this.resourceAllocations, checkNotNull(resourceAllocations, "resourceAllocations"));
   }

   public String getInfo() {
      return info;
   }

   public System getSystem() {
      return virtualSystem;
   }

   public Set getResourceAllocations() {
      return resourceAllocations;
   }

   @Override
   public String toString() {
      return "[info=" + getInfo() + ", virtualSystem=" + getSystem() + "]";
   }

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

}