edge.java

采用 Java 编写的数据库系统单元测试程序。

/*
 *
 * The DbUnit Database Testing Framework
 * Copyright (C)2005, DbUnit.org
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */
package org.dbunit.util.search;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;

/**
 * Basic implementation of the IEdge interface.
 * TODO: add test cases (specially for the equals/compare methods)
 * 
 * @author Felipe Leme <[e-mail]>
 * @version $Revision: 554 $
 * @since Aug 25, 2005
 */
public class Edge implements IEdge {

    /**
     * Logger for this class
     */
    private static final Logger logger = LoggerFactory.getLogger(Edge.class);

  private final Comparable nodeFrom;
  private final Comparable nodeTo;

  public Edge(Comparable nodeFrom, Comparable nodeTo) {
    if (nodeFrom == null) {
      throw new IllegalArgumentException("node from cannot be null");
    }
    if (nodeTo == null) {
      throw new IllegalArgumentException("node to cannot be null");
    }
    this.nodeFrom = nodeFrom;
    this.nodeTo = nodeTo;
  }

  public Object getFrom() {
        logger.debug("getFrom() - start");

    return this.nodeFrom;
  }

  public Object getTo() {
        logger.debug("getTo() - start");

    return this.nodeTo;
  }

  public String toString() {
        logger.debug("toString() - start");

    return this.nodeFrom + "->" + this.nodeTo;
  }

  public int compareTo(Object o) {
        logger.debug("compareTo(o=" + o + ") - start");

    Edge otherEdge = (Edge) o;
    int result = this.nodeFrom.compareTo(otherEdge.getFrom());
    if ( result == 0 ) {
      result = this.nodeTo.compareTo(otherEdge.getTo());
    }
    return result;
  }
  
  public boolean equals(Object obj) {
        logger.debug("equals(obj=" + obj + ") - start");

    return EqualsBuilder.reflectionEquals( this, obj );
  }
  
  public int hashCode() {
        logger.debug("hashCode() - start");

    return HashCodeBuilder.reflectionHashCode( this );
  }

}