Program: 65293
Project: 65293
Buggy source:
/** 
 * Validates the given   {@link StateFieldPathExpression}.
 * @param expression The {@link StateFieldPathExpression} the validate
 * @param associationFieldValid Determines whether an association field is a valid type
 * @return <code>true</code> if the given {@link StateFieldPathExpression} resolves to a validpath; <code>false</code> otherwise
 */
protected boolean validateStateFieldPathExpression(StateFieldPathExpression expression,boolean associationFieldValid){
  boolean valid=true;
  expression.getIdentificationVariable().accept(this);
  if (expression.hasIdentificationVariable() && !expression.endsWithDot()) {
    Object mapping=helper.resolveMapping(expression);
    if (mapping != null) {
      if (helper.isCollectionMapping(mapping)) {
        addProblem(expression,StateFieldPathExpression_CollectionType,expression.toParsedText());
        valid=false;
      }
 else       if (!associationFieldValid && helper.isRelationshipMapping(mapping)) {
        addProblem(expression,StateFieldPathExpression_AssociationField,expression.toParsedText());
        valid=false;
      }
 else       if (helper.isTransient(mapping)) {
        addProblem(expression,StateFieldPathExpression_NoMapping,expression.toParsedText());
        valid=false;
      }
    }
 else {
      Object type=helper.getType(expression);
      if (!helper.isTypeResolvable(type)) {
        addProblem(expression,StateFieldPathExpression_NotResolvable,expression.toParsedText());
        valid=false;
      }
 else       if (helper.isEnumType(type)) {
        String enumConstant=expression.getPath(expression.pathSize() - 1);
        boolean found=false;
        for (        String constant : helper.getEnumConstants(type)) {
          if (constant.equals(enumConstant)) {
            found=true;
            break;
          }
        }
        if (!found) {
          int startIndex=position(expression) + helper.getTypeName(type).length() + 1;
          int endIndex=startIndex + enumConstant.length();
          addProblem(expression,startIndex,endIndex,StateFieldPathExpression_InvalidEnumConstant,enumConstant);
          valid=false;
        }
        usedIdentificationVariables.remove(expression.getIdentificationVariable());
      }
 else {
        addProblem(expression,StateFieldPathExpression_NoMapping,expression.toParsedText());
        valid=false;
      }
    }
  }
  return valid;
}

Fixed version (ground truth):
/** 
 * Validates the given   {@link StateFieldPathExpression}.
 * @param expression The {@link StateFieldPathExpression} the validate
 * @param associationFieldValid Determines whether an association field is a valid type
 * @return <code>true</code> if the given {@link StateFieldPathExpression} resolves to a validpath; <code>false</code> otherwise
 */
protected boolean validateStateFieldPathExpression(StateFieldPathExpression expression,PathType pathType){
  boolean valid=true;
  expression.getIdentificationVariable().accept(this);
  if (expression.hasIdentificationVariable() && !expression.endsWithDot()) {
    Object mapping=helper.resolveMapping(expression);
    if (mapping != null) {
      if (helper.isCollectionMapping(mapping)) {
        if (pathType != PathType.ANY_FIELD_INCLUDING_COLLECTION) {
          addProblem(expression,StateFieldPathExpression_CollectionType,expression.toActualText());
          valid=false;
        }
      }
 else       if (helper.isTransient(mapping)) {
        addProblem(expression,StateFieldPathExpression_NoMapping,expression.toParsedText());
        valid=false;
      }
 else       if ((pathType == PathType.BASIC_FIELD_ONLY) && !helper.isPropertyMapping(mapping)) {
        addProblem(expression,StateFieldPathExpression_AssociationField,expression.toActualText());
        valid=false;
      }
    }
 else {
      Object type=helper.getType(expression);
      if (!helper.isTypeResolvable(type)) {
        addProblem(expression,StateFieldPathExpression_NotResolvable,expression.toParsedText());
        valid=false;
      }
 else       if (helper.isEnumType(type)) {
        String enumConstant=expression.getPath(expression.pathSize() - 1);
        boolean found=false;
        for (        String constant : helper.getEnumConstants(type)) {
          if (constant.equals(enumConstant)) {
            found=true;
            break;
          }
        }
        if (!found) {
          int startIndex=position(expression) + helper.getTypeName(type).length() + 1;
          int endIndex=startIndex + enumConstant.length();
          addProblem(expression,startIndex,endIndex,StateFieldPathExpression_InvalidEnumConstant,enumConstant);
          valid=false;
        }
        usedIdentificationVariables.remove(expression.getIdentificationVariable());
      }
 else {
        addProblem(expression,StateFieldPathExpression_NoMapping,expression.toParsedText());
        valid=false;
      }
    }
  }
  return valid;
}