package org.trails.io;

 import java.io.Serializable;

 public class EntityIdentity implements Serializable

 {

         private static final long serialVersionUID = 1L;

         private final Class entityName;

         private final Serializable id;

         private final Object version;

         public EntityIdentity(Class entityName, Serializable id)

         {

                 this(entityName, id, null);

         }

         public EntityIdentity(Class entityName, Serializable id, Object version)

         {

                 this.entityName = entityName;

                 this.id = id;

                 this.version = version;

         }

         public Class getEntityName()

         {

                 return entityName;

         }

         public Serializable getId()

         {

                 return id;

         }

         public Object getVersion()

         {

                 return version;

         }

         public boolean equals(Object o)

         {

                 if (this == o) return true;

                 if (o == null || getClass() != o.getClass()) return false;

                 EntityIdentity that = (EntityIdentity) o;

                 if (!entityName.equals(that.entityName)) return false;

                 if (id != null ? !id.equals(that.id) : that.id != null) return false;

                 return true;

         }

         public int hashCode()

         {

                 int result;

                 result = entityName.hashCode();

                 result = 31 * result + (id != null ? id.hashCode() : 0);

                 return result;

         }

 }