private void makeAttributeJSONArray(final SimpleFeatureType layerSft) throws JSONException {
    List<ConfiguredAttribute> cas = applicationLayer.getAttributes();
    // Sort the attributes, by featuretype and the featuretyp
    Collections.sort(
        cas,
        new Comparator<ConfiguredAttribute>() {
          @Override
          public int compare(ConfiguredAttribute o1, ConfiguredAttribute o2) {
            if (o1.getFeatureType() == null) {
              return -1;
            }
            if (o2.getFeatureType() == null) {
              return 1;
            }
            if (o1.getFeatureType().getId().equals(layerSft.getId())) {
              return -1;
            }
            if (o2.getFeatureType().getId().equals(layerSft.getId())) {
              return 1;
            }
            return o1.getFeatureType().getId().compareTo(o2.getFeatureType().getId());
          }
        });
    for (ConfiguredAttribute ca : cas) {
      JSONObject j = ca.toJSONObject();

      // Copy alias over from feature type
      SimpleFeatureType sft = ca.getFeatureType();
      if (sft == null) {
        sft = layerSft;
      }
      AttributeDescriptor ad = sft.getAttribute(ca.getAttributeName());
      j.put("alias", ad.getAlias());
      j.put("featureTypeAttribute", ad.toJSONObject());

      attributesJSON.put(j);
    }
  }
  @Before
  public void synchronizeFeatureTypeAndLoadInfo() throws JSONException {

    Layer layer = applicationLayer.getService().getSingleLayer(applicationLayer.getLayerName());
    if (layer == null) {
      getContext()
          .getValidationErrors()
          .addGlobalError(
              new SimpleError(
                  "Laag niet gevonden bij originele service - verwijder deze laag uit niveau"));
      return;
    }

    for (StyleLibrary sld : layer.getService().getStyleLibraries()) {
      Map style = new HashMap();
      JSONObject styleTitleJson = new JSONObject();

      style.put("id", "sld:" + sld.getId());
      style.put(
          "title", "SLD stijl: " + sld.getTitle() + (sld.isDefaultStyle() ? " (standaard)" : ""));

      // Find stuff for layerName
      if (sld.getNamedLayerUserStylesJson() != null) {
        JSONObject sldNamedLayerJson = new JSONObject(sld.getNamedLayerUserStylesJson());
        if (sldNamedLayerJson.has(layer.getName())) {
          JSONObject namedLayer = sldNamedLayerJson.getJSONObject(layer.getName());
          if (namedLayer.has("title")) {
            styleTitleJson.put("namedLayerTitle", namedLayer.get("title"));
          }
          JSONArray userStyles = namedLayer.getJSONArray("styles");
          if (userStyles.length() > 0) {
            JSONObject userStyle = userStyles.getJSONObject(0);
            if (userStyle.has("title")) {
              styleTitleJson.put("styleTitle", userStyle.get("title"));
            }
          }
        }
      }
      styles.add(style);
      stylesTitleJson.put((String) style.get("id"), styleTitleJson);
    }
    if (layer.getDetails().containsKey(Layer.DETAIL_WMS_STYLES)) {
      JSONArray wmsStyles =
          new JSONArray(layer.getDetails().get(Layer.DETAIL_WMS_STYLES).getValue());
      for (int i = 0; i < wmsStyles.length(); i++) {
        JSONObject wmsStyle = wmsStyles.getJSONObject(i);
        Map style = new HashMap();
        style.put("id", "wms:" + wmsStyle.getString("name"));
        style.put(
            "title",
            "WMS server stijl: "
                + wmsStyle.getString("name")
                + " ("
                + wmsStyle.getString("title")
                + ")");
        JSONObject styleTitleJson = new JSONObject();
        styleTitleJson.put("styleTitle", wmsStyle.getString("title"));
        styles.add(style);
        stylesTitleJson.put((String) style.get("id"), styleTitleJson);
      }
    }
    if (!styles.isEmpty()) {
      List<Map> temp = new ArrayList();
      Map s = new HashMap();
      s.put("id", "registry_default");
      s.put("title", "In gegevensregister als standaard ingestelde SLD");
      temp.add(s);
      s = new HashMap();
      s.put("id", "none");
      s.put("title", "Geen: standaard stijl van WMS service zelf");
      temp.add(s);
      temp.addAll(styles);
      styles = temp;
    }

    // Synchronize configured attributes with layer feature type

    if (layer.getFeatureType() == null || layer.getFeatureType().getAttributes().isEmpty()) {
      applicationLayer.getAttributes().clear();
    } else {
      List<String> attributesToRetain = new ArrayList();

      SimpleFeatureType sft = layer.getFeatureType();
      editable = sft.isWriteable();
      // Rebuild ApplicationLayer.attributes according to Layer FeatureType
      // New attributes are added at the end of the list; the original
      // order is only used when the Application.attributes list is empty
      // So a feature for reordering attributes per applicationLayer is
      // possible.
      // New Attributes from a join or related featureType are added at the
      // end of the list.
      attributesToRetain = rebuildAttributes(sft);

      // JSON info about attributed required for editing
      makeAttributeJSONArray(layer.getFeatureType());
      // Remove ConfiguredAttributes which are no longer present
      List<ConfiguredAttribute> attributesToRemove = new ArrayList();
      for (ConfiguredAttribute ca : applicationLayer.getAttributes()) {
        if (ca.getFeatureType() == null) {
          ca.setFeatureType(layer.getFeatureType());
        }
        if (!attributesToRetain.contains(ca.getFullName())) {
          // Do not modify list we are iterating over
          attributesToRemove.add(ca);
          if (!"save".equals(getContext().getEventName())) {
            getContext()
                .getMessages()
                .add(
                    new SimpleMessage(
                        "Attribuut \"{0}\" niet meer beschikbaar in attribuutbron: wordt verwijderd na opslaan",
                        ca.getAttributeName()));
          }
        }
      }
      for (ConfiguredAttribute ca : attributesToRemove) {
        applicationLayer.getAttributes().remove(ca);
        Stripersist.getEntityManager().remove(ca);
      }
    }
  }
  public Resolution save() throws JSONException {
    // Only remove details which are editable and re-added layer if not empty,
    // retain other details possibly used in other parts than this page
    // See JSP for which keys are edited
    applicationLayer
        .getDetails()
        .keySet()
        .removeAll(
            Arrays.asList(
                "titleAlias",
                "legendImageUrl",
                "transparency",
                "influenceradius",
                "summary.title",
                "summary.image",
                "summary.description",
                "summary.link",
                "editfunction.title",
                "style",
                "summary.noHtmlEncode",
                "summary.nl2br"));
    for (Map.Entry<String, String> e : details.entrySet()) {
      if (e.getValue() != null) { // Don't insert null value ClobElement
        applicationLayer.getDetails().put(e.getKey(), new ClobElement(e.getValue()));
      }
    }

    applicationLayer.getReaders().clear();
    for (String groupName : groupsRead) {
      applicationLayer.getReaders().add(groupName);
    }

    applicationLayer.getWriters().clear();
    for (String groupName : groupsWrite) {
      applicationLayer.getWriters().add(groupName);
    }

    if (applicationLayer.getAttributes() != null && applicationLayer.getAttributes().size() > 0) {
      List<ConfiguredAttribute> appAttributes = applicationLayer.getAttributes();
      int i = 0;

      for (Iterator it = appAttributes.iterator(); it.hasNext(); ) {
        ConfiguredAttribute appAttribute = (ConfiguredAttribute) it.next();
        // save visible
        if (selectedAttributes.contains(appAttribute.getFullName())) {
          appAttribute.setVisible(true);
        } else {
          appAttribute.setVisible(false);
        }

        // save editable
        if (attributesJSON.length() > i) {
          JSONObject attribute = attributesJSON.getJSONObject(i);

          if (attribute.has("editable")) {
            appAttribute.setEditable(new Boolean(attribute.get("editable").toString()));
          }
          if (attribute.has("editalias")) {
            appAttribute.setEditAlias(attribute.get("editalias").toString());
          }
          if (attribute.has("editvalues")) {
            appAttribute.setEditValues(attribute.get("editvalues").toString());
          }
          if (attribute.has("editHeight")) {
            appAttribute.setEditHeight(attribute.get("editHeight").toString());
          }

          // save selectable
          if (attribute.has("selectable")) {
            appAttribute.setSelectable(new Boolean(attribute.get("selectable").toString()));
          }
          if (attribute.has("filterable")) {
            appAttribute.setFilterable(new Boolean(attribute.get("filterable").toString()));
          }

          if (attribute.has("defaultValue")) {
            appAttribute.setDefaultValue(attribute.get("defaultValue").toString());
          }
        }
        i++;
      }
    }

    Stripersist.getEntityManager().persist(applicationLayer);
    application.authorizationsModified();

    displayName = applicationLayer.getDisplayName();

    Stripersist.getEntityManager().getTransaction().commit();

    getContext().getMessages().add(new SimpleMessage("De kaartlaag is opgeslagen"));
    return edit();
  }