Fix when a Java route doesn't have a package name

fix #6423

Signed-off-by: Aurélien Pupier <[email protected]>

extensions-support/swagger/deployment/src/main/java/org/apache/camel/quarkus/support/swagger/deployment/SupportSwaggerProcessor.java

@@ -29,8 +29,11 @@ class SupportSwaggerProcessor {
     void reflectiveClasses(BuildProducer<ReflectiveClassBuildItem> reflectiveClasses, CombinedIndexBuildItem combinedIndex) {
         IndexView index = combinedIndex.getIndex();
 
-        index.getKnownClasses().stream().filter(ci -> ci.name().packagePrefix().startsWith("io.swagger.models") ||
-                ci.name().packagePrefix().startsWith("io.swagger.v3.oas.models"))
+        index.getKnownClasses().stream().filter(ci -> {
+            String packagePrefix = ci.name().packagePrefix();
+            return packagePrefix != null
+                    && (packagePrefix.startsWith("io.swagger.models") || packagePrefix.startsWith("io.swagger.v3.oas.models"));
+        })
                 .map(ClassInfo::toString)
                 .forEach(name -> reflectiveClasses.produce(ReflectiveClassBuildItem.builder(name).methods().build()));
     }

integration-tests/openapi-java/src/main/java/CamelRoute.java

@@ -0,0 +1,28 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import org.apache.camel.builder.RouteBuilder;
+
+public class CamelRoute extends RouteBuilder {
+
+    @Override
+    public void configure() {
+        from("direct:example-without-package-name")
+                .id("example-without-package-name")
+                .log("I'm alive without package name!");
+    }
+}