Collections CRUD basic methods

src/community/oseo/oseo-core/src/main/java/org/geoserver/opensearch/eo/store/OpenSearchAccess.java

@@ -81,6 +81,11 @@ public String getPrefix() {
 
     }
 
+    /**
+     * Local part of the HTML description property. The namespace is the one assigned to the store, this is not an EO property
+     */
+    public static String DESCRIPTION = "htmlDescription";
+
     /**
      * Returns the feature source backing collections (dynamic, as the store has to respect the namespace URI given by GeoServer)
      * 

src/community/oseo/oseo-core/src/test/resources/oseo-rest.yaml

@@ -292,7 +292,7 @@ paths:
           examples:
             application/json: |
               {
-                links: [
+                "links": [
                    {
                      "offering": "http://www.opengis.net/spec/owc/1.0/req/atom/wms",
                      "method": "GET",

src/community/oseo/oseo-rest/pom.xml

@@ -38,6 +38,10 @@
       <artifactId>gt-geojson</artifactId>
       <version>${gt.version}</version>
     </dependency>
+    <dependency>
+      <groupId>com.fasterxml.jackson.core</groupId>
+      <artifactId>jackson-databind</artifactId>
+    </dependency>
     <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>

src/community/oseo/oseo-rest/src/main/java/org/geoserver/opensearch/rest/AbstractOpenSearchController.java

@@ -5,13 +5,18 @@
 package org.geoserver.opensearch.rest;
 
 import java.io.IOException;
+import java.io.StringReader;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.List;
 import java.util.NoSuchElementException;
 import java.util.function.Consumer;
 import java.util.stream.Collectors;
 
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+
 import org.geoserver.opensearch.eo.OpenSearchAccessProvider;
 import org.geoserver.opensearch.eo.response.LinkFeatureComparator;
 import org.geoserver.opensearch.eo.store.OpenSearchAccess;
@@ -40,6 +45,9 @@
 import org.opengis.feature.type.PropertyDescriptor;
 import org.opengis.filter.FilterFactory2;
 import org.springframework.http.HttpStatus;
+import org.w3c.dom.Document;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
 
 /**
  * Base class for OpenSearch related REST controllers
@@ -155,7 +163,7 @@ protected SimpleFeatureType mapFeatureTypeToSimple(FeatureType schema,
         return targetSchema;
     }
 
-    protected OgcLinks buildOgcLinksFromFeature(Feature feature) {
+    protected OgcLinks buildOgcLinksFromFeature(Feature feature, boolean notFoundOnEmpty) {
         // map to a list of beans
         List<OgcLink> links = Collections.emptyList();
         Collection<Property> linkProperties = feature
@@ -171,6 +179,9 @@ protected OgcLinks buildOgcLinksFromFeature(Feature feature) {
                         return new OgcLink(offering, method, code, type, href);
                     }).collect(Collectors.toList());
         }
+        if(links.isEmpty() && notFoundOnEmpty) {
+            throw new ResourceNotFoundException();
+        }
         return new OgcLinks(links);
     }
 
@@ -238,5 +249,24 @@ public void close() {
             }
         };
     }
+
+    /**
+     * Checks XML well formedness (TODO: check against actual schemas)
+     * 
+     * @param xml
+     * @throws IOException 
+     * @throws SAXException 
+     */
+    protected void checkWellFormedXML(String xml)  {
+        DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
+        DocumentBuilder dBuilder;
+        try {
+            dBuilder = dbFactory.newDocumentBuilder();
+            Document doc = dBuilder.parse(new InputSource(new StringReader(xml)));
+        } catch (ParserConfigurationException | SAXException | IOException e) {
+            throw new RestException("XML document is not well formed", HttpStatus.BAD_REQUEST);
+        }
+
+    }
 
 }