user API provides info about available annotators

annotation/src/main/java/lcsb/mapviewer/annotation/services/ModelAnnotator.java

@@ -134,8 +134,8 @@ public class ModelAnnotator {
 	 */
 	@PostConstruct
 	public final void init() {
-		availableAnnotators = new ArrayList<ElementAnnotator>();
-		defaultAnnotators = new ArrayList<ElementAnnotator>();
+		availableAnnotators = new ArrayList<>();
+		defaultAnnotators = new ArrayList<>();
 
 		addAnnotator(biocompendiumAnnotator);
 		addAnnotator(chebiBackend);

rest-api/src/main/java/lcsb/mapviewer/api/configuration/ConfigurationController.java

@@ -45,6 +45,7 @@ public class ConfigurationController extends BaseController {
 		result.put("privilegeTypes", configurationController.getPrivilegeTypes(token));
 		result.put("version", configurationService.getSystemSvnVersion(context.getRealPath("/")));
 		result.put("buildDate", configurationService.getSystemBuild(context.getRealPath("/")));
+		result.put("annotators", configurationController.getAnnotators(token));
 		return result;
 	}
 

rest-api/src/main/java/lcsb/mapviewer/api/configuration/ConfigurationRestImpl.java

@@ -15,6 +15,8 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.transaction.annotation.Transactional;
 
 import javassist.Modifier;
+import lcsb.mapviewer.annotation.services.ModelAnnotator;
+import lcsb.mapviewer.annotation.services.annotators.ElementAnnotator;
 import lcsb.mapviewer.common.Pair;
 import lcsb.mapviewer.converter.IConverter;
 import lcsb.mapviewer.converter.graphics.AbstractImageGenerator;
@@ -49,6 +51,9 @@ public class ConfigurationRestImpl {
 	@Autowired
 	private IConfigurationService	configurationService;
 
+	@Autowired
+	private ModelAnnotator				modelAnnotator;
+
 	public List<ConfigurationView> getAllValues(String token) throws SecurityException {
 		userService.getToken(token);
 		return configurationService.getAllValues();
@@ -238,4 +243,21 @@ public class ConfigurationRestImpl {
 		return result;
 	}
 
+	public List<Map<String, Object>> getAnnotators(String token) {
+		List<Map<String, Object>> result = new ArrayList<>();
+		for (ElementAnnotator annotator : modelAnnotator.getAvailableAnnotators()) {
+			result.add(prepareAnnotator(annotator));
+		}
+		return result;
+	}
+
+	private Map<String, Object> prepareAnnotator(ElementAnnotator annotator) {
+		Map<String, Object> result = new HashMap<>();
+		result.put("className", annotator.getClass().getName());
+		result.put("name", annotator.getCommonName());
+		result.put("url", annotator.getUrl());
+		result.put("elementClassNames", annotator.getValidClasses());
+		return result;
+	}
+
 }