Add exception mapper to throwing body handler

Author: NSeydoux

api/src/main/java/com/inrupt/client/Response.java

@@ -155,33 +155,53 @@ public static BodyHandler<Void> discarding() {
         }
 
         /**
-         * Throws on HTTP error, or apply the provided body handler.
+         * Throws on HTTP error using the provided mapper, or apply the provided body handler.
          * @param handler the body handler to apply on non-error HTTP responses
          * @param isSuccess a callback determining error cases
+         * @param exceptionMapper the exception mapper
          * @return the body handler
          * @param <T> the type of the body handler
          */
         public static <T> Response.BodyHandler<T> throwOnError(
                 final Response.BodyHandler<T> handler,
-                final Function<Response.ResponseInfo, Boolean> isSuccess
+                final Function<Response.ResponseInfo, Boolean> isSuccess,
+                final Function<Response.ResponseInfo, ClientHttpException> exceptionMapper
         ) {
             return responseinfo -> {
                 if (!isSuccess.apply(responseinfo)) {
-                    throw new ClientHttpException(
-                        "An HTTP error has been returned from "
-                            + responseinfo.uri()
-                            + " with status code "
-                            + responseinfo.statusCode(),
-                        responseinfo.uri(),
-                        responseinfo.statusCode(),
-                        responseinfo.headers(),
-                        new String(responseinfo.body().array(), StandardCharsets.UTF_8)
-                    );
+                    throw exceptionMapper.apply(responseinfo);
                 }
                 return handler.apply(responseinfo);
             };
         }
 
+        /**
+         * Throws on HTTP error, or apply the provided body handler.
+         * @param handler the body handler to apply on non-error HTTP responses
+         * @param isSuccess a callback determining error cases
+         * @return the body handler
+         * @param <T> the type of the body handler
+         */
+        public static <T> Response.BodyHandler<T> throwOnError(
+                final Response.BodyHandler<T> handler,
+                final Function<Response.ResponseInfo, Boolean> isSuccess
+        ) {
+            final Function<Response.ResponseInfo, ClientHttpException> defaultMapper = responseInfo ->
+                new ClientHttpException(
+                    "An HTTP error has been returned from "
+                        + responseInfo.uri()
+                        + " with status code "
+                        + responseInfo.statusCode(),
+                    responseInfo.uri(),
+                    responseInfo.statusCode(),
+                    responseInfo.headers(),
+                    new String(responseInfo.body().array(), StandardCharsets.UTF_8)
+                );
+            return throwOnError(handler, isSuccess, defaultMapper);
+        }
+
+
+
         private BodyHandlers() {
             // Prevent instantiation
         }