package com.atlassian.plugins.rest.sample.expansion.entity;
   
   import com.atlassian.plugins.rest.common.expand.AbstractRecursiveEntityExpander;
   import com.atlassian.plugins.rest.sample.expansion.resource.DataStore;
   
   /**
    * Expands a {@link PlayerRecord} by asking the {@link DataStore} to perform the database queries.
    */
   public class PlayerRecordExpander extends AbstractRecursiveEntityExpander<PlayerRecord> {
      protected PlayerRecord expandInternal(PlayerRecord entity) {
          if (entity != null && entity.getPlayer() != null)
              return DataStore.getInstance().getPlayerRecord(entity.getPlayer());
          else
              return entity;
      }
  }