Annotations for web configuration.

Web configuration for REST services and login filter was moved from the
web.xml file to code annotations.

src/main/java/es/uvigo/esei/daa/DAAExampleApplication.java

+package es.uvigo.esei.daa;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+
+import javax.ws.rs.ApplicationPath;
+import javax.ws.rs.core.Application;
+
+import es.uvigo.esei.daa.rest.PeopleResource;
+
+@ApplicationPath("/rest/*")
+public class DAAExampleApplication extends Application {
+	@Override
+	public Set<Class<?>> getClasses() {
+		return new HashSet<>(Arrays.asList(PeopleResource.class));
+	}
+	
+	@Override
+	public Map<String, Object> getProperties() {
+		// Activates JSON automatic conversion in JAX-RS
+		return Collections.singletonMap(
+			"com.sun.jersey.api.json.POJOMappingFeature", true
+		);
+	}
+}

src/main/java/es/uvigo/esei/daa/LoginFilter.java

 package es.uvigo.esei.daa;
 
 import java.io.IOException;
+import java.util.Optional;
 
 import javax.servlet.Filter;
 import javax.servlet.FilterChain;
@@ -8,6 +9,7 @@ import javax.servlet.FilterConfig;
 import javax.servlet.ServletException;
 import javax.servlet.ServletRequest;
 import javax.servlet.ServletResponse;
+import javax.servlet.annotation.WebFilter;
 import javax.servlet.http.Cookie;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
@@ -15,6 +17,7 @@ import javax.servlet.http.HttpServletResponse;
 import es.uvigo.esei.daa.dao.DAOException;
 import es.uvigo.esei.daa.dao.UsersDAO;
 
+@WebFilter(urlPatterns = { "/*", "/logout" })
 public class LoginFilter implements Filter {
 	@Override
 	public void doFilter(
@@ -105,13 +108,14 @@ public class LoginFilter implements Filter {
 	
 	private boolean checkToken(HttpServletRequest request)
 	throws DAOException, IllegalArgumentException {
-		final Cookie[] cookies = request.getCookies();
+		final Cookie[] cookies = Optional.ofNullable(request.getCookies())
+			.orElse(new Cookie[0]);
 		
-		if (cookies != null) {
 		for (Cookie cookie : cookies) {
-				if (cookie.getName().equals("token")) {
-					return new UsersDAO().checkToken(cookie.getValue()) != null;
-				}
+			if ("token".equals(cookie.getName())) {
+				final String token = new UsersDAO().checkToken(cookie.getValue());
+				
+				return token != null;
 			}
 		}
 		

src/main/java/es/uvigo/esei/daa/rest/People.java → src/main/java/es/uvigo/esei/daa/rest/PeopleResource.java

@@ -16,10 +16,10 @@ import es.uvigo.esei.daa.dao.PeopleDAO;
 
 @Path("/people")
 @Produces(MediaType.APPLICATION_JSON)
-public class People {
+public class PeopleResource {
 	private final PeopleDAO dao;
 	
-	public People() {
+	public PeopleResource() {
 		this.dao = new PeopleDAO();
 	}
 

src/main/webapp/WEB-INF/web.xml

@@ -20,26 +20,4 @@
 		<res-type>javax.sql.DataSource</res-type>
 		<res-auth>Container</res-auth>
 	</resource-ref>
-	
-	<servlet>
-		<servlet-name>javax.ws.rs.core.Application</servlet-name>
-		<init-param>
-			<!-- Activates JSON automatic conversion in JAX-RS -->
-			<param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
-			<param-value>true</param-value>
-		</init-param>
-	</servlet>
-	<servlet-mapping>
-		<servlet-name>javax.ws.rs.core.Application</servlet-name>
-		<url-pattern>/rest/*</url-pattern>
-	</servlet-mapping>
-
-	<filter>
-		<filter-name>LoginFilter</filter-name>
-		<filter-class>es.uvigo.esei.daa.LoginFilter</filter-class>
-	</filter>
-	<filter-mapping>
-		<filter-name>LoginFilter</filter-name>
-		<url-pattern>/*</url-pattern>
-	</filter-mapping>
 </web-app>
\ No newline at end of file

src/test/java/es/uvigo/esei/daa/rest/PeopleTest.java

@@ -48,7 +48,7 @@ public class PeopleTest extends JerseyTest {
 
 	@Override
 	protected Application configure() {
-		return new ResourceConfig(People.class)
+		return new ResourceConfig(PeopleResource.class)
 			.register(JacksonJsonProvider.class)
 			.property("com.sun.jersey.api.json.POJOMappingFeature", Boolean.TRUE);
 	}