private static final StackTraceElementProxy[] NO_STACK_TRACE=new StackTraceElementProxy[0];

  public ThrowableProxy(Throwable throwable) {
      this(throwable, null, false);
  }
  
  public ThrowableProxy(Throwable throwable, Set<Throwable> exclude, boolean circular) {
   
    this.throwable = throwable;
    this.message = throwable.getMessage();
    if (!circular) {
      this.className = throwable.getClass().getName();
      this.stackTraceElementProxyArray = ThrowableProxyUtil.steArrayToStepArray(throwable
          .getStackTrace());

      Throwable nested = throwable.getCause();

      if (nested != null) {
        if (exclude==null) {
            exclude = createExcludeSet(throwable);
        }
        if (exclude.add(nested)) {
          this.cause = new ThrowableProxy(nested, exclude, false);
          this.cause.commonFrames = ThrowableProxyUtil
              .findNumberOfCommonFrames(nested.getStackTrace(),
                  stackTraceElementProxyArray);
        } else {
          this.cause = new ThrowableProxy(nested, exclude, true);
        }
      }
      if(GET_SUPPRESSED_METHOD != null) {
        // this will only execute on Java 7
        try {
          Object obj = GET_SUPPRESSED_METHOD.invoke(throwable);
          if(obj instanceof Throwable[]) {
            Throwable[] throwableSuppressed = (Throwable[]) obj;
            if(throwableSuppressed.length > 0) {
              suppressed = new ThrowableProxy[throwableSuppressed.length];
              if (exclude==null) {
                exclude = createExcludeSet(throwable);
              }
              for(int i=0;i<throwableSuppressed.length;i++) {
                if (exclude.add(throwableSuppressed[i])) {
                  this.suppressed[i] = new ThrowableProxy(throwableSuppressed[i], exclude, false);
                  this.suppressed[i].commonFrames = ThrowableProxyUtil
                      .findNumberOfCommonFrames(throwableSuppressed[i].getStackTrace(),
                          stackTraceElementProxyArray);
                } else {
                  this.suppressed[i] = new ThrowableProxy(throwableSuppressed[i], exclude, true);
                }
              }
            }
          }
        } catch (IllegalAccessException e) {
          // ignore
        } catch (InvocationTargetException e) {
          // ignore
        }
      }
    } else {
      this.className = "CIRCULAR REFERENCE-" + throwable.getClass().getName();
      this.stackTraceElementProxyArray = NO_STACK_TRACE;
    }

  }

  private static Set<Throwable> createExcludeSet(Throwable parent) {
    Set<Throwable> exclude = Collections.newSetFromMap(new IdentityHashMap<Throwable, Boolean>());
    exclude.add(parent);
    return exclude;
  }