MaxCheck.java :  » Development » OVal » net » sf » oval » constraint » Java Open Source

/*******************************************************************************
 * Portions created by Sebastian Thomschke are copyright (c) 2005-2007 Sebastian
 * Thomschke.
 * 
 * All Rights Reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     Sebastian Thomschke - initial implementation.
 *******************************************************************************/
package net.sf.oval.constraint;

import java.util.Map;

import net.sf.oval.Validator;
import net.sf.oval.configuration.annotation.AbstractAnnotationCheck;
import net.sf.oval.context.OValContext;
import net.sf.oval.internal.CollectionFactoryHolder;

/**
 * @author Sebastian Thomschke
 */
public class MaxCheck extends AbstractAnnotationCheck<Max>
{
  private static final long serialVersionUID = 1L;

  private long max;

  @Override
  public void configure(final Max constraintAnnotation)
  {
    super.configure(constraintAnnotation);
    setMax(constraintAnnotation.value());
  }

  /**
   * @return the max
   */
  public long getMax()
  {
    return max;
  }

  @Override
  public Map<String, String> getMessageVariables()
  {
    final Map<String, String> messageVariables = CollectionFactoryHolder.getFactory()
        .createMap(2);
    messageVariables.put("max", Long.toString(max));
    return messageVariables;
  }

  public boolean isSatisfied(final Object validatedObject, final Object value,
      final OValContext context, final Validator validator)
  {
    if (value == null) return true;

    if (value instanceof Number)
    {
      if (value instanceof Float || value instanceof Double)
      {
        final double doubleValue = ((Number) value).doubleValue();
        return doubleValue <= max;
      }
      final long longValue = ((Number) value).longValue();
      return longValue <= max;
    }

    final String stringValue = value.toString();
    try
    {
      final double doubleValue = Double.parseDouble(stringValue);
      return doubleValue <= max;
    }
    catch (NumberFormatException e)
    {
      return false;
    }
  }

  /**
   * @param max the max to set
   */
  public void setMax(final long max)
  {
    this.max = max;
  }
}