Remove unused attributes

avaje-jex/src/main/java/io/avaje/jex/DJex.java

@@ -11,26 +11,13 @@ final class DJex implements Jex {
 
   private final Routing routing = new DefaultRouting();
   private final AppLifecycle lifecycle = new DefaultLifecycle();
-  private final Map<Class<?>, Object> attributes = new HashMap<>();
   private final DJexConfig config = new DJexConfig();
 
   @Override
   public DJexConfig config() {
     return config;
   }
 
-  @Override
-  public <T> Jex attribute(Class<T> cls, T instance) {
-    attributes.put(cls, instance);
-    return this;
-  }
-
-  @Override
-  @SuppressWarnings("unchecked")
-  public <T> T attribute(Class<T> cls) {
-    return (T) attributes.get(cls);
-  }
-
   @Override
   public Jex routing(Routing.HttpService routes) {
     routing.add(routes);

avaje-jex/src/main/java/io/avaje/jex/Jex.java

@@ -44,24 +44,6 @@ static Jex create() {
     return new DJex();
   }
 
-  /**
-   * Sets a custom attribute that can be accessed later by the Jex instance or its components.
-   *
-   * @param <T> The type of the attribute.
-   * @param cls The class of the attribute.
-   * @param instance The instance of the attribute.
-   */
-  <T> Jex attribute(Class<T> cls, T instance);
-
-  /**
-   * Returns a custom attribute previously set using {@link #attribute(Class, Object)}.
-   *
-   * @param <T> The type of the attribute.
-   * @param cls The class of the attribute.
-   * @return The attribute instance, or null if not found.
-   */
-  <T> T attribute(Class<T> cls);
-
   /**
    * Adds a new HTTP route and its associated handler to the Jex routing configuration.
    *

avaje-jex/src/main/java/io/avaje/jex/Routing.java

@@ -58,7 +58,17 @@ public sealed interface Routing permits DefaultRouting {
    */
   <T extends Exception> Routing error(Class<T> exceptionClass, ExceptionHandler<T> handler);
 
-  /** Add a group of route handlers with a common path prefix. */
+  /**
+   * Add a group of route handlers with a common path prefix.
+   *
+   * <pre>{@code
+   * routing.path("api", () -> {
+   *     routing.get("/", ctx -> ctx.text("apiRoot"));
+   *     routing.get("{id}", ctx -> ctx.text("api-" + ctx.pathParam("id")));
+   * });
+   *
+   * }</pre>
+   */
   Routing path(String path, Group group);
 
   /** Add a HEAD handler. */

avaje-jex/src/main/java/io/avaje/jex/core/SpiServiceManager.java

@@ -168,7 +168,12 @@ JsonService initJsonService() {
       if (jsonService != null) {
         return jsonService;
       }
-      return CoreServiceLoader.jsonService().orElseGet(this::defaultJsonService);
+
+      var json = CoreServiceLoader.jsonService().orElseGet(this::defaultJsonService);
+
+      if (json == null) log.log(Level.WARNING, "No Json library configured");
+
+      return json;
     }
 
     /** Create a reasonable default JsonService if Jackson or avaje-jsonb are present. */