Fix Jaxb2TypeScanner to scan for @XmlRegistry

Update ClassPathJaxb2TypeScanner to scan for @XmlRegistry classes.

Prior to this commit explicitly configured @XmlRegistry annotated classes
were not registered with the JAXBContext when using the 'packagesToScan'
property of the Jaxb2Unmarshaller.

Issue: SPR-10714
(cherry picked from 4f871d4)

spring-oxm/src/main/java/org/springframework/oxm/jaxb/ClassPathJaxb2TypeScanner.java

@@ -19,7 +19,9 @@ package org.springframework.oxm.jaxb;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
+
 import javax.xml.bind.annotation.XmlEnum;
+import javax.xml.bind.annotation.XmlRegistry;
 import javax.xml.bind.annotation.XmlRootElement;
 import javax.xml.bind.annotation.XmlSeeAlso;
 import javax.xml.bind.annotation.XmlType;
@@ -42,6 +44,7 @@ import org.springframework.util.ClassUtils;
  * @author Arjen Poutsma
  * @author Juergen Hoeller
  * @author David Harrigan
+ * @author Biju Kunjummen
  * @since 3.1.1
  * @see #scanPackages()
  */
@@ -50,8 +53,11 @@ class ClassPathJaxb2TypeScanner {
 	private static final String RESOURCE_PATTERN = "/**/*.class";
 
 	private static final TypeFilter[] JAXB2_TYPE_FILTERS = new TypeFilter[] {
-			new AnnotationTypeFilter(XmlRootElement.class, false), new AnnotationTypeFilter(XmlType.class, false),
-			new AnnotationTypeFilter(XmlSeeAlso.class, false), new AnnotationTypeFilter(XmlEnum.class, false)};
+			new AnnotationTypeFilter(XmlRootElement.class, false),
+			new AnnotationTypeFilter(XmlType.class, false),
+			new AnnotationTypeFilter(XmlSeeAlso.class, false),
+			new AnnotationTypeFilter(XmlEnum.class, false),
+			new AnnotationTypeFilter(XmlRegistry.class, false)};
 
 
 	private final ResourcePatternResolver resourcePatternResolver;

spring-oxm/src/test/java/org/springframework/oxm/jaxb/Airplane.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2002-2013 the original author or authors.
+ *
+ * Licensed 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.
+ */
+
+package org.springframework.oxm.jaxb;
+
+import javax.xml.bind.annotation.XmlRootElement;
+
+@XmlRootElement
+public class Airplane {
+
+	private String name;
+
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+}

spring-oxm/src/test/java/org/springframework/oxm/jaxb/Jaxb2MarshallerTests.java

@@ -51,10 +51,15 @@ import org.xml.sax.Attributes;
 import org.xml.sax.ContentHandler;
 import org.xml.sax.Locator;
 
-import static org.custommonkey.xmlunit.XMLAssert.assertXMLEqual;
+
 import static org.junit.Assert.*;
+import static org.custommonkey.xmlunit.XMLAssert.assertXMLEqual;
 import static org.mockito.BDDMockito.*;
 
+/**
+ * @author Arjen Poutsma
+ * @author Biju Kunjummen
+ */
 public class Jaxb2MarshallerTests extends AbstractMarshallerTests {
 
 	private static final String CONTEXT_PATH = "org.springframework.oxm.jaxb.test";
@@ -281,6 +286,21 @@ public class Jaxb2MarshallerTests extends AbstractMarshallerTests {
 		verify(mimeContainer, times(3)).addAttachment(isA(String.class), isA(DataHandler.class));
 	}
 
+	@Test
+	public void marshalAWrappedObjectHoldingAnXmlElementDeclElement() throws Exception {
+		// SPR-10714
+		marshaller = new Jaxb2Marshaller();
+		marshaller.setPackagesToScan(new String[] { "org.springframework.oxm.jaxb" });
+		marshaller.afterPropertiesSet();
+		Airplane airplane = new Airplane();
+		airplane.setName("test");
+		StringWriter writer = new StringWriter();
+		Result result = new StreamResult(writer);
+		marshaller.marshal(airplane, result);
+		assertXMLEqual("Marshalling should use root Element",
+				writer.toString(), "<airplane><name>test</name></airplane>");
+	}
+
 	@XmlRootElement
 	@SuppressWarnings("unused")
 	public static class DummyRootElement {

spring-oxm/src/test/java/org/springframework/oxm/jaxb/Jaxb2UnmarshallerTests.java

@@ -39,6 +39,10 @@ import org.springframework.util.xml.StaxUtils;
 import static org.junit.Assert.*;
 import static org.mockito.BDDMockito.*;
 
+/**
+ * @author Arjen Poutsma
+ * @author Biju Kunjummen
+ */
 public class Jaxb2UnmarshallerTests extends AbstractUnmarshallerTests {
 
 	private static final String INPUT_STRING = "<tns:flights xmlns:tns=\"http://samples.springframework.org/flight\">" +
@@ -104,6 +108,7 @@ public class Jaxb2UnmarshallerTests extends AbstractUnmarshallerTests {
 
 	@Test
 	@Override
+	@SuppressWarnings("unchecked")
 	public void unmarshalPartialStaxSourceXmlStreamReader() throws Exception {
 		XMLInputFactory inputFactory = XMLInputFactory.newInstance();
 		XMLStreamReader streamReader = inputFactory.createXMLStreamReader(new StringReader(INPUT_STRING));
@@ -115,5 +120,18 @@ public class Jaxb2UnmarshallerTests extends AbstractUnmarshallerTests {
 		testFlight(flight);
 	}
 
+	@Test
+	@SuppressWarnings("unchecked")
+	public void unmarshalAnXmlReferingToAWrappedXmlElementDecl() throws Exception {
+		// SPR-10714
+		unmarshaller = new Jaxb2Marshaller();
+		unmarshaller.setPackagesToScan(new String[] { "org.springframework.oxm.jaxb" });
+		unmarshaller.afterPropertiesSet();
+		Source source = new StreamSource(new StringReader(
+				"<brand-airplane><name>test</name></brand-airplane>"));
+		JAXBElement<Airplane> airplane = (JAXBElement<Airplane>) unmarshaller.unmarshal(source);
+		assertEquals("Unmarshalling via explicit @XmlRegistry tag should return correct type",
+				"test", airplane.getValue().getName());
+	}
 
 }

spring-oxm/src/test/java/org/springframework/oxm/jaxb/XmlRegObjectFactory.java

@@ -0,0 +1,16 @@
+
+package org.springframework.oxm.jaxb;
+
+import javax.xml.bind.JAXBElement;
+import javax.xml.bind.annotation.XmlElementDecl;
+import javax.xml.bind.annotation.XmlRegistry;
+import javax.xml.namespace.QName;
+
+@XmlRegistry
+public class XmlRegObjectFactory {
+
+	@XmlElementDecl(name = "brand-airplane")
+	public JAXBElement<Airplane> createAirplane(Airplane airplane) {
+		return new JAXBElement<Airplane>(new QName("brand-airplane"), Airplane.class, null, airplane);
+	}
+}