processing order for Jackson/Jaxb annotations

Signed-off-by: Maxim Nesen <maxim.nesen@oracle.com>

Author: senivam

media/json-jackson/src/main/java/org/glassfish/jersey/jackson/JacksonFeature.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, 2020 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2021 Oracle and/or its affiliates. All rights reserved.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v. 2.0, which is available at
@@ -46,16 +46,18 @@ public class JacksonFeature implements Feature {
      * Using them can provide a useful information to the user, but it can expose unnecessary information, too.
      */
     private final boolean registerExceptionMappers;
+    private final boolean registerJaxbAnnotationModule;
 
     /**
      * Default constructor enables registering Jackson's exception mappers
      */
     public JacksonFeature() {
-        this(true);
+        this(true, false);
     }
 
-    private JacksonFeature(boolean registerExceptionMappers) {
+    private JacksonFeature(boolean registerExceptionMappers, boolean registerJaxbAnnotationModule) {
         this.registerExceptionMappers = registerExceptionMappers;
+        this.registerJaxbAnnotationModule = registerJaxbAnnotationModule;
     }
 
     /**
@@ -71,7 +73,12 @@ public static JacksonFeature withExceptionMappers() {
      * @return JacksonFeature without registered Jackson's exception mappers
      */
     public static JacksonFeature withoutExceptionMappers() {
-        return new JacksonFeature(false);
+        return new JacksonFeature(false, false);
+    }
+
+    public static JacksonFeature withJaxbAnnotationModule() {
+
+        return new JacksonFeature(true, true);
     }
 
     private static final String JSON_FEATURE = JacksonFeature.class.getSimpleName();
@@ -93,7 +100,7 @@ public boolean configure(final FeatureContext context) {
 
         // Register Jackson.
         if (!config.isRegistered(JacksonJaxbJsonProvider.class)) {
-
+            DefaultJacksonJaxbJsonProvider.registerJaxbAnnotationModule.set(registerJaxbAnnotationModule);
             if (registerExceptionMappers) {
                 // add the default Jackson exception mappers
                 context.register(JsonParseExceptionMapper.class);

media/json-jackson/src/main/java/org/glassfish/jersey/jackson/internal/DefaultJacksonJaxbJsonProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020, 2021 Oracle and/or its affiliates. All rights reserved.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v. 2.0, which is available at
@@ -17,10 +17,12 @@
 package org.glassfish.jersey.jackson.internal;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.Module;
 import org.glassfish.jersey.jackson.internal.jackson.jaxrs.cfg.Annotations;
 import org.glassfish.jersey.jackson.internal.jackson.jaxrs.json.JacksonJaxbJsonProvider;
 
-import java.util.Objects;
+import java.util.List;
+import java.util.concurrent.atomic.AtomicBoolean;
 import javax.inject.Singleton;
 
 /**
@@ -29,7 +31,13 @@
 @Singleton
 public class DefaultJacksonJaxbJsonProvider extends JacksonJaxbJsonProvider {
 
+    //do not register JaxbAnnotationModule because it brakes default annotations processing
+    private static final String EXCLUDE_MODULE_NAME = "JaxbAnnotationModule";
+    //but if you know what you are doing, you are welcome
+    public static final AtomicBoolean registerJaxbAnnotationModule = new AtomicBoolean(false);
+
     public DefaultJacksonJaxbJsonProvider() {
+        super();
         findAndRegisterModules();
     }
 
@@ -39,14 +47,20 @@ public DefaultJacksonJaxbJsonProvider(final Annotations... annotationsToUse) {
     }
 
     private void findAndRegisterModules() {
+
         final ObjectMapper defaultMapper = _mapperConfig.getDefaultMapper();
-        if (Objects.nonNull(defaultMapper)) {
-            defaultMapper.findAndRegisterModules();
+        final ObjectMapper mapper = _mapperConfig.getConfiguredMapper();
+
+        final List<Module> modules = ObjectMapper.findModules();
+        if (!registerJaxbAnnotationModule.get()) {
+            modules.removeIf(mod -> mod.getModuleName().contains(EXCLUDE_MODULE_NAME));
+        } else {
+            registerJaxbAnnotationModule.set(false);
         }
 
-        final ObjectMapper mapper = _mapperConfig.getConfiguredMapper();
-        if (Objects.nonNull(mapper)) {
-            mapper.findAndRegisterModules();
+        defaultMapper.registerModules(modules);
+        if (mapper != null) {
+            mapper.registerModules(modules);
         }
     }
-}
+}

media/json-jackson/src/test/java/org/glassfish/jersey/jackson/internal/DefaultJacksonJaxbJsonProviderWithJaxbModuleTest.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2021 Oracle and/or its affiliates. All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0, which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * This Source Code may also be made available under the following Secondary
+ * Licenses when the conditions for such availability set forth in the
+ * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
+ * version 2 with the GNU Classpath Exception, which is available at
+ * https://www.gnu.org/software/classpath/license.html.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
+ */
+
+package org.glassfish.jersey.jackson.internal;
+
+import org.glassfish.jersey.jackson.JacksonFeature;
+import org.glassfish.jersey.jackson.internal.model.ServiceTest;
+import org.glassfish.jersey.server.ResourceConfig;
+import org.glassfish.jersey.test.JerseyTest;
+import org.junit.Test;
+
+import javax.ws.rs.core.Application;
+
+import static junit.framework.TestCase.assertEquals;
+
+public final class DefaultJacksonJaxbJsonProviderWithJaxbModuleTest extends JerseyTest {
+
+    @Override
+    protected final Application configure() {
+        return new ResourceConfig(ServiceTest.class).register(JacksonFeature.withJaxbAnnotationModule());
+    }
+
+    @Test
+    public final void testJavaOptional() {
+        final String response = target("entity/simple").request().get(String.class);
+        assertEquals("{\"jaxb\":\"Hello\",\"value\":\"World\"}", response);
+    }
+}

media/json-jackson/src/test/java/org/glassfish/jersey/jackson/internal/model/ServiceTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020, 2021 Oracle and/or its affiliates. All rights reserved.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v. 2.0, which is available at
@@ -23,6 +23,7 @@
 import javax.ws.rs.Path;
 import javax.ws.rs.Produces;
 import javax.ws.rs.core.MediaType;
+import javax.xml.bind.annotation.XmlElement;
 
 @Path("/entity/")
 public final class ServiceTest {
@@ -45,6 +46,7 @@ private static final class EntityTest {
             this.value = value;
         }
 
+        @XmlElement(name = "jaxb")
         @JsonGetter("name")
         public final String getName() {
             return name;