@Override public JSONObject toJSONObject() { JSONObject object = super.toJSONObject(); ImageDataFilterChain chain = m_filters; if ((null != chain) && (chain.size() > 0)) { JSONArray filters = new JSONArray(); JSONObject filter = new JSONObject(); filter.put("active", JSONBoolean.getInstance(chain.isActive())); for (ImageDataFilter<?> ifilter : chain.getFilters()) { if (null != ifilter) { JSONObject make = ifilter.toJSONObject(); if (null != make) { filters.set(filters.size(), make); } } } filter.put("filters", filters); object.put("filter", filter); } return object; }