Apache CXF Support for RESTful Web Services

apache-cxf/cxf-jaxrs-implementation/src/main/java/com/baeldung/cxf/jaxrs/implementation/Baeldung.java

@@ -44,15 +44,16 @@ public Course getCourse(@PathParam("courseOrder") int courseOrder) {
 
     @PUT
     @Path("courses/{courseOrder}")
-    public Response putCourse(@PathParam("courseOrder") int courseOrder, Course course) {
-        Course existingCourse = courses.get(courseOrder);
-
-        if (existingCourse == null || existingCourse.getId() != course.getId() || !(existingCourse.getName().equals(course.getName()))) {
-            courses.put(courseOrder, course);
-            return Response.ok().build();
+    public Response updateCourse(@PathParam("courseOrder") int courseOrder, Course course) {
+        Course existingCourse = courses.get(courseOrder);        
+        if (existingCourse == null) {
+            return Response.status(Response.Status.NOT_FOUND).build();
         }
-
-        return Response.notModified().build();
+        if (existingCourse.equals(course)) {
+            return Response.notModified().build();    
+        }
+        courses.put(courseOrder, course);
+        return Response.ok().build();
     }
 
     @Path("courses/{courseOrder}/students")

apache-cxf/cxf-jaxrs-implementation/src/main/java/com/baeldung/cxf/jaxrs/implementation/Course.java

@@ -3,6 +3,7 @@
 import javax.ws.rs.*;
 import javax.ws.rs.core.Response;
 import javax.xml.bind.annotation.XmlRootElement;
+
 import java.util.ArrayList;
 import java.util.List;
 
@@ -35,31 +36,42 @@ public List<Student> getStudents() {
     public void setStudents(List<Student> students) {
         this.students = students;
     }
-    
+
     @GET
     @Path("{studentOrder}")
-    public Student getStudent(@PathParam("studentOrder")int studentOrder) {
+    public Student getStudent(@PathParam("studentOrder") int studentOrder) {
         return students.get(studentOrder);
     }
-    
+
     @POST
-    public Response postStudent(Student student) {
+    public Response createStudent(Student student) {
         if (students == null) {
             students = new ArrayList<>();
         }
+        if (students.contains(student)) {
+            return Response.status(Response.Status.CONFLICT).build();
+        }
         students.add(student);
         return Response.ok(student).build();
     }
-    
+
     @DELETE
     @Path("{studentOrder}")
     public Response deleteStudent(@PathParam("studentOrder") int studentOrder) {
-        Student student = students.get(studentOrder);
-        if (student != null) {
-            students.remove(studentOrder);
-            return Response.ok().build();
-        } else {
-            return Response.notModified().build();
+        if (students == null || studentOrder >= students.size()) {
+            return Response.status(Response.Status.NOT_FOUND).build();
         }
+        students.remove(studentOrder);
+        return Response.ok().build();
+    }
+
+    @Override
+    public int hashCode() {
+        return id + name.hashCode();
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        return (obj instanceof Course) && (id == ((Course) obj).getId()) && (name.equals(((Course) obj).getName()));
     }
 }

apache-cxf/cxf-jaxrs-implementation/src/main/java/com/baeldung/cxf/jaxrs/implementation/Student.java

@@ -22,4 +22,14 @@ public String getName() {
     public void setName(String name) {
         this.name = name;
     }
+
+    @Override
+    public int hashCode() {
+        return id + name.hashCode();
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        return (obj instanceof Student) && (id == ((Student) obj).getId()) && (name.equals(((Student) obj).getName()));
+    }
 }

apache-cxf/cxf-jaxrs-implementation/src/main/resources/changed_course.xml

@@ -0,0 +1,4 @@
+<Course>
+    <id>2</id>
+    <name>Apache CXF Support for RESTful</name>
+</Course>

apache-cxf/cxf-jaxrs-implementation/src/main/resources/conflict_student.xml

@@ -0,0 +1,4 @@
+<Student>
+    <id>1</id>
+    <name>Student A</name>
+</Student>

apache-cxf/cxf-jaxrs-implementation/src/main/resources/student.xml → apache-cxf/cxf-jaxrs-implementation/src/main/resources/created_student.xml

@@ -1,4 +1,3 @@
-
 <Student>
     <id>3</id>
     <name>Student C</name>

apache-cxf/cxf-jaxrs-implementation/src/main/resources/unchanged_course.xml

@@ -0,0 +1,4 @@
+<Course>
+    <id>1</id>
+    <name>REST with Spring</name>
+</Course>

apache-cxf/cxf-jaxrs-implementation/src/test/java/com/baeldung/cxf/jaxrs/implementation/ServiceTest.java

@@ -34,24 +34,57 @@ public static void closeClient() throws IOException {
     }
 
     @Test
-    public void whenPutCourse_thenCorrect() throws IOException {
+    public void whenUpdateNonExistentCourse_thenReceiveNotFoundResponse() throws IOException {
         HttpPut httpPut = new HttpPut(BASE_URL + "3");
-        InputStream resourceStream = this.getClass().getClassLoader().getResourceAsStream("course.xml");
+        InputStream resourceStream = this.getClass().getClassLoader().getResourceAsStream("non_existent_course.xml");
+        httpPut.setEntity(new InputStreamEntity(resourceStream));
+        httpPut.setHeader("Content-Type", "text/xml");
+
+        HttpResponse response = client.execute(httpPut);
+        assertEquals(404, response.getStatusLine().getStatusCode());
+    }
+
+    @Test
+    public void whenUpdateUnchangedCourse_thenReceiveNotModifiedResponse() throws IOException {
+        HttpPut httpPut = new HttpPut(BASE_URL + "1");
+        InputStream resourceStream = this.getClass().getClassLoader().getResourceAsStream("unchanged_course.xml");
+        httpPut.setEntity(new InputStreamEntity(resourceStream));
+        httpPut.setHeader("Content-Type", "text/xml");
+
+        HttpResponse response = client.execute(httpPut);
+        assertEquals(304, response.getStatusLine().getStatusCode());
+    }
+
+    @Test
+    public void whenUpdateValidCourse_thenReceiveOKResponse() throws IOException {
+        HttpPut httpPut = new HttpPut(BASE_URL + "2");
+        InputStream resourceStream = this.getClass().getClassLoader().getResourceAsStream("changed_course.xml");
         httpPut.setEntity(new InputStreamEntity(resourceStream));
         httpPut.setHeader("Content-Type", "text/xml");
 
         HttpResponse response = client.execute(httpPut);
         assertEquals(200, response.getStatusLine().getStatusCode());
 
-        Course course = getCourse(3);
-        assertEquals(3, course.getId());
+        Course course = getCourse(2);
+        assertEquals(2, course.getId());
         assertEquals("Apache CXF Support for RESTful", course.getName());
     }
+
+    @Test
+    public void whenCreateConflictStudent_thenReceiveConflictResponse() throws IOException {
+        HttpPost httpPost = new HttpPost(BASE_URL + "1/students");
+        InputStream resourceStream = this.getClass().getClassLoader().getResourceAsStream("conflict_student.xml");
+        httpPost.setEntity(new InputStreamEntity(resourceStream));
+        httpPost.setHeader("Content-Type", "text/xml");
+
+        HttpResponse response = client.execute(httpPost);
+        assertEquals(409, response.getStatusLine().getStatusCode());
+    }
 
     @Test
-    public void whenPostStudent_thenCorrect() throws IOException {
+    public void whenCreateValidStudent_thenReceiveOKResponse() throws IOException {
         HttpPost httpPost = new HttpPost(BASE_URL + "2/students");
-        InputStream resourceStream = this.getClass().getClassLoader().getResourceAsStream("student.xml");
+        InputStream resourceStream = this.getClass().getClassLoader().getResourceAsStream("created_student.xml");
         httpPost.setEntity(new InputStreamEntity(resourceStream));
         httpPost.setHeader("Content-Type", "text/xml");
 
@@ -64,7 +97,14 @@ public void whenPostStudent_thenCorrect() throws IOException {
     }
 
     @Test
-    public void whenDeleteStudent_thenCorrect() throws IOException {
+    public void whenDeleteInvalidStudent_thenReceiveNotFoundResponse() throws IOException {
+        HttpDelete httpDelete = new HttpDelete(BASE_URL + "1/students/2");
+        HttpResponse response = client.execute(httpDelete);
+        assertEquals(404, response.getStatusLine().getStatusCode());
+    }   
+
+    @Test
+    public void whenDeleteValidStudent_thenReceiveOKResponse() throws IOException {
         HttpDelete httpDelete = new HttpDelete(BASE_URL + "1/students/0");
         HttpResponse response = client.execute(httpDelete);
         assertEquals(200, response.getStatusLine().getStatusCode());