private List<String> rebuildAttributes(SimpleFeatureType sft) {
Layer layer = applicationLayer.getService().getSingleLayer(applicationLayer.getLayerName());
List<String> attributesToRetain = new ArrayList<String>();
for (AttributeDescriptor ad : sft.getAttributes()) {
String name = ad.getName();
String fullName = sft.getId() + ":" + name;
// if attribute already added return.
if (attributesToRetain.contains(fullName)) {
return attributesToRetain;
}
attributesToRetain.add(fullName);
// Used for display in JSP
if (StringUtils.isNotBlank(ad.getAlias())) {
attributeAliases.put(fullName, ad.getAlias());
}
if (applicationLayer.getAttribute(sft, name) == null) {
ConfiguredAttribute ca = new ConfiguredAttribute();
// default visible if not geometry type
// and not a attribute of a related featuretype
boolean defaultVisible = true;
if (layer.getFeatureType().getId() != sft.getId()
|| AttributeDescriptor.GEOMETRY_TYPES.contains(ad.getType())) {
defaultVisible = false;
}
ca.setVisible(defaultVisible);
ca.setAttributeName(name);
ca.setFeatureType(sft);
applicationLayer.getAttributes().add(ca);
Stripersist.getEntityManager().persist(ca);
if (!"save".equals(getContext().getEventName())) {
String message = "Nieuw attribuut \"{0}\" gevonden in ";
if (layer.getFeatureType().getId() != sft.getId()) {
message += "gekoppelde ";
}
message += "attribuutbron";
if (layer.getFeatureType().getId() == sft.getId()) {
message += ": wordt zichtbaar na opslaan";
}
getContext().getMessages().add(new SimpleMessage(message, name));
}
}
}
if (sft.getRelations() != null) {
for (FeatureTypeRelation rel : sft.getRelations()) {
attributesToRetain.addAll(rebuildAttributes(rel.getForeignFeatureType()));
}
}
return attributesToRetain;
}
/**
* Get the features as JSONArray with the given params
*
* @param al The application layer(if there is a application layer)
* @param ft The featuretype that must be used to get the features
* @param fs The featureSource
* @param q The query
* @param sort The attribute name that is used to sort
* @param dir Sort direction (DESC or ASC)
* @return JSONArray with features.
* @throws IOException if any
* @throws JSONException if transforming to json fails
* @throws Exception if any
*/
public JSONArray getJSONFeatures(
ApplicationLayer al, SimpleFeatureType ft, FeatureSource fs, Query q, String sort, String dir)
throws IOException, JSONException, Exception {
Map<String, String> attributeAliases = new HashMap<String, String>();
if (!edit) {
for (AttributeDescriptor ad : ft.getAttributes()) {
if (ad.getAlias() != null) {
attributeAliases.put(ad.getName(), ad.getAlias());
}
}
}
List<String> propertyNames;
if (al != null) {
propertyNames = this.setPropertyNames(al, q, ft, edit);
} else {
propertyNames = new ArrayList<String>();
for (AttributeDescriptor ad : ft.getAttributes()) {
propertyNames.add(ad.getName());
}
}
if (sort != null) {
setSortBy(q, propertyNames, sort, dir);
}
/* Use the first property as sort field, otherwise geotools while give a error when quering
* a JDBC featureType without a primary key.
*/
else if (fs instanceof org.geotools.jdbc.JDBCFeatureSource && !propertyNames.isEmpty()) {
setSortBy(q, propertyNames.get(0), dir);
}
Integer start = q.getStartIndex();
if (start == null) {
start = 0;
}
boolean offsetSupported = fs.getQueryCapabilities().isOffsetSupported();
// if offSet is not supported, get more features (start + the wanted features)
if (!offsetSupported && q.getMaxFeatures() < MAX_FEATURES) {
q.setMaxFeatures(q.getMaxFeatures() + start);
}
FeatureIterator<SimpleFeature> it = null;
JSONArray features = new JSONArray();
try {
it = fs.getFeatures(q).features();
int featureIndex = 0;
while (it.hasNext()) {
SimpleFeature feature = it.next();
/* if offset not supported and there are more features returned then
* only get the features after index >= start*/
if (offsetSupported || featureIndex >= start) {
JSONObject j =
this.toJSONFeature(
new JSONObject(), feature, ft, al, propertyNames, attributeAliases, 0);
features.put(j);
}
featureIndex++;
}
} finally {
if (it != null) {
it.close();
}
fs.getDataStore().dispose();
}
return features;
}
