added CountryMessageConverter

(cherry picked from commit cdce1bb)

registry-ws/src/main/java/org/gbif/registry/ws/config/WebMvcConfig.java

@@ -23,6 +23,7 @@
 import org.gbif.checklistbank.ws.client.NubResourceClient;
 import org.gbif.registry.domain.ws.*;
 import org.gbif.registry.security.precheck.AuthPreCheckInterceptor;
+import org.gbif.registry.ws.converter.CountryMessageConverter;
 import org.gbif.registry.ws.converter.UuidTextMessageConverter;
 import org.gbif.registry.ws.provider.CollectionDescriptorsSearchRequestHandlerMethodArgumentResolver;
 import org.gbif.registry.ws.provider.CollectionSearchRequestHandlerMethodArgumentResolver;
@@ -192,4 +193,9 @@ public NubResourceClient nubResourceClient(@Value("${api.root.url}") String apiR
         .withUrl(apiRootUrl)
         .build(NubResourceClient.class);
   }
+
+  @Bean
+  public CountryMessageConverter countryMessageConverter() {
+    return new CountryMessageConverter();
+  }
 }

registry-ws/src/main/java/org/gbif/registry/ws/converter/CountryMessageConverter.java

@@ -0,0 +1,22 @@
+package org.gbif.registry.ws.converter;
+
+import org.gbif.api.util.VocabularyUtils;
+import org.gbif.api.vocabulary.Country;
+import org.springframework.core.convert.converter.Converter;
+
+public class CountryMessageConverter implements Converter<String, Country> {
+
+  @Override
+  public Country convert(String source) {
+    return parseCountry(source);
+  }
+
+  private Country parseCountry(String param) {
+    Country country = Country.fromIsoCode(param);
+    if (country == null) {
+      // if nothing found also try by enum name
+      country = VocabularyUtils.lookupEnum(param, Country.class);
+    }
+    return country;
+  }
+}