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  package org.apache.cayenne;
  
  import java.util.List;
  
  /**
   * Represents a single item in a multipart query execution. Can be either an
   * update count or a list of objects.
   *
   * @since 4.0
   */
  public interface QueryResultItem<T> {
  
      /**
       * Returns true if encapsulated result is a select result.
       */
      boolean isSelectResult();
  
      /**
       * Returns true if encapsulated result is a batch update result.
       */
      boolean isBatchUpdate();
  
      /**
       * Returns a list of selected objects. Throws unless
       * {@link #isSelectResult()} returns true.
       */
      List<T> getSelectResult();
  
      /**
       * Returns an update count.
       */
      int getUpdateCount();
  
      /**
       * Returns batch update result in a form of array of individual update counts.
       */
      int[] getBatchUpdateCounts();
  
  }
  