Fix @BeanParam handling during hot reload

Fixes: #45625

Author: geoand

extensions/resteasy-reactive/rest/deployment/src/test/java/io/quarkus/resteasy/reactive/server/test/beanparam/BeanParamRecordDevModeTest.java

@@ -0,0 +1,42 @@
+package io.quarkus.resteasy.reactive.server.test.beanparam;
+
+import static io.restassured.RestAssured.when;
+import static org.hamcrest.CoreMatchers.is;
+
+import java.util.function.Supplier;
+
+import org.jboss.shrinkwrap.api.ShrinkWrap;
+import org.jboss.shrinkwrap.api.spec.JavaArchive;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+import io.quarkus.test.QuarkusDevModeTest;
+
+public class BeanParamRecordDevModeTest {
+
+    @RegisterExtension
+    static QuarkusDevModeTest TEST = new QuarkusDevModeTest()
+            .setArchiveProducer(new Supplier<>() {
+                @Override
+                public JavaArchive get() {
+                    return ShrinkWrap.create(JavaArchive.class).addClasses(FirstAndSecondResource.class,
+                            FirstAndSecondResource.Param.class);
+                }
+            });
+
+    @Test
+    void test() {
+        when().get("fs/foo/bar")
+                .then()
+                .statusCode(200)
+                .body(is("foo-bar"));
+
+        TEST.modifySourceFile(FirstAndSecondResource.class, (orig) -> orig.replace("-", "#"));
+
+        when().get("fs/foo/bar")
+                .then()
+                .statusCode(200)
+                .body(is("foo#bar"));
+    }
+
+}

extensions/resteasy-reactive/rest/deployment/src/test/java/io/quarkus/resteasy/reactive/server/test/beanparam/FirstAndSecondResource.java

@@ -0,0 +1,20 @@
+package io.quarkus.resteasy.reactive.server.test.beanparam;
+
+import jakarta.ws.rs.GET;
+import jakarta.ws.rs.Path;
+
+import org.jboss.resteasy.reactive.RestPath;
+
+@Path("fs")
+public class FirstAndSecondResource {
+
+    @Path("{first}/{second}")
+    @GET
+    public String firstAndSecond(Param param) {
+        return param.first() + "-" + param.second();
+    }
+
+    public record Param(@RestPath String first, @RestPath String second) {
+
+    }
+}

independent-projects/resteasy-reactive/server/runtime/src/main/java/org/jboss/resteasy/reactive/server/core/parameters/RecordBeanParamExtractor.java

@@ -2,7 +2,6 @@
 
 import java.lang.invoke.MethodHandle;
 import java.lang.invoke.MethodHandles;
-import java.lang.invoke.MethodType;
 
 import org.jboss.resteasy.reactive.server.core.ResteasyReactiveRequestContext;
 import org.jboss.resteasy.reactive.server.injection.ResteasyReactiveInjectionContext;
@@ -13,8 +12,8 @@ public class RecordBeanParamExtractor implements ParameterExtractor {
 
     public RecordBeanParamExtractor(Class<?> target) {
         try {
-            factoryMethod = MethodHandles.lookup().findStatic(target, "__quarkus_rest_inject",
-                    MethodType.methodType(target, ResteasyReactiveInjectionContext.class));
+            factoryMethod = MethodHandles.lookup()
+                    .unreflect(target.getMethod("__quarkus_rest_inject", ResteasyReactiveInjectionContext.class));
         } catch (NoSuchMethodException | IllegalAccessException e) {
             throw new RuntimeException("Failed to find target generated factory method on record @BeanParam type", e);
         }
@@ -27,7 +26,6 @@ public Object extractParameter(ResteasyReactiveRequestContext context) {
         } catch (RuntimeException e) {
             throw e;
         } catch (Throwable e) {
-            e.printStackTrace();
             throw new RuntimeException("Failed to invoke generated factory method on record @BeanParam type", e);
         }
     }