http://ebean-orm.github.io/: For open source java artifacts.
  • Rob Bygrave 
package io.ebeaninternal.server.persist;

import java.io.Serializable;
import java.util.Comparator;


Used to sort BatchedBeanHolder by their depth.


Beans are queued and put into BatchedBeanHolder along with their depth. This
delays the actually binding to PreparedStatements until the
BatchedBeanHolder's are flushed. This is so that we can get the generated
keys from inserts. These values are required to persist the 'detail' beans.



/**
 * Used to sort BatchedBeanHolder by their depth.
 * <p>
 * Beans are queued and put into BatchedBeanHolder along with their depth. This
 * delays the actually binding to PreparedStatements until the
 * BatchedBeanHolder's are flushed. This is so that we can get the generated
 * keys from inserts. These values are required to persist the 'detail' beans.
 * </p>
 */
public class BatchDepthComparator implements Comparator<BatchedBeanHolder>, Serializable {

  private static final long serialVersionUID = 264611821665757991L;

  @Override
  public int compare(BatchedBeanHolder b1, BatchedBeanHolder b2) {

    if (b1.getOrder() < b2.getOrder()) {
      return -1;
    }
    if (b1.getOrder() == b2.getOrder()) {
      return 0;
    }
    return 1;
  }

}