Method to extract parameters from Hibernate query

gistfile1.txt

  private Map getParameters(Object obj) {
    Map parameters = new HashMap();
    Object query = null;
    if (obj instanceof AbstractQueryImpl) {
      query = obj;
    } else {
      return parameters;
    }
    try {
      AbstractQueryImpl q = (AbstractQueryImpl) query;
      Field f = AbstractQueryImpl.class.getDeclaredField("namedParameters");
      f.setAccessible(true);
      Map namedParameters = (Map) f.get(q);
      for (Iterator iter = namedParameters.entrySet().iterator(); iter.hasNext();) {
        Map.Entry entry = (Map.Entry) iter.next();
        String name = (String) entry.getKey();
        TypedValue value = (TypedValue) entry.getValue();
        Object o = value.getValue();
        String valueStr;
        if (o instanceof Calendar) {
          valueStr = DateUtils.printCal((Calendar) o);
        } else {
          valueStr = o.toString();
        }
        parameters.put(name, valueStr);
      }
      f = AbstractQueryImpl.class.getDeclaredField("namedParameterLists");
      f.setAccessible(true);
      namedParameters = (Map) f.get(q);
      for (Iterator iter = namedParameters.entrySet().iterator(); iter.hasNext();) {
        Map.Entry entry = (Map.Entry) iter.next();
        String name = (String) entry.getKey();
        TypedValue value = (TypedValue) entry.getValue();
        Object o = value.getValue();
        String valueStr;
        if (o instanceof Calendar) {
          valueStr = DateUtils.printCal((Calendar) o);
        } else {
          valueStr = o.toString();
        }
        if (valueStr.length() > 500) {
          valueStr = valueStr.substring(0, 500) + "...";
        }
        parameters.put(name, valueStr);
      }
    } catch (Throwable t) {
      if (logger.isDebugEnabled()) {
        logger.debug("Error intercepting query parameters", t);
      }
    }
    return parameters;
  }