package org.opengroupware.jope.eocontrol;

/*
 * EOBooleanQualifier
 * 
 * A qualifier which always evaluates to true or false ... (used by the rule
 * system)
 */
public class EOBooleanQualifier extends EOQualifier
  implements EOQualifierEvaluation
{
  public static final EOBooleanQualifier trueQualifier = 
    new EOBooleanQualifier(true);
  public static final EOBooleanQualifier falseQualifier = 
    new EOBooleanQualifier(false);

  protected boolean value;
  
  /* factory */
  
  protected EOBooleanQualifier(boolean _value) {
    this.value = _value;
  }

  /* evaluation */
  
  public boolean evaluateWithObject(Object _object) {
    return this.value;
  }
  
  /* string representation */
  
  public boolean appendStringRepresentation(StringBuffer _sb) {
    _sb.append(this.value ? "*true*" : "*false*");
    return true;
  }
}