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/*
 * Copyright (c) 2003-2008, Franz-Josef Elmer, All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 * - Redistributions of source code must retain the above copyright notice, 
 *   this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice, 
 *   this list of conditions and the following disclaimer in the documentation 
 *   and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */
/*
 * Created on 07.04.2006
 */
package classycle.dependency;

import classycle.graph.AtomicVertex;
import classycle.graph.NameAttributes;
import classycle.util.StringPattern;

public class CheckSetStatement implements Statement
{
  private final StringPattern _set;
  private final SetDefinitionRepository _repository;

  public CheckSetStatement(StringPattern set, 
                           SetDefinitionRepository repository)
  {
    _set = set;
    _repository = repository;
  }

  public Result execute(AtomicVertex[] graph)
  {
    int size = 0;
    for (int i = 0; i < graph.length; i++)
    {
      if (_set.matches(((NameAttributes) graph[i].getAttributes()).getName()))
      {
        size++;
      }
    }
    StringBuffer buffer = new StringBuffer("Set ");
    buffer.append(_repository.toString(_set));
    if (size == 0)
    {
      buffer.append(" is empty.");
    } else if (size == 1)
    {
      buffer.append(" has one class.");
    } else
    {
      buffer.append(" has ").append(size).append(" classes.");
    }
    return new TextResult(new String(buffer.append('\n')), size > 0);
  }

  public String toString()
  {
    return DependencyDefinitionParser.CHECK_KEY_WORD + " set " 
           + _repository.toString(_set);
  }

  
}