Added aspect to intercept method execution which needs authentication

pom.xml

@@ -251,6 +251,26 @@
 			<artifactId>jackson-databind</artifactId>
 			<version>2.0.6</version>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-aop</artifactId>
+			<version>${org.springframework-version}</version>
+		</dependency>
+		<dependency>
+			<groupId>org.aspectj</groupId>
+			<artifactId>aspectjrt</artifactId>
+			<version>1.7.1</version>
+		</dependency>
+		<dependency>
+			<groupId>aspectj</groupId>
+			<artifactId>aspectjweaver</artifactId>
+			<version>1.5.4</version>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-aspects</artifactId>
+			<version>${org.springframework-version}</version>
+		</dependency>
 	</dependencies>
 	<build>
 		<plugins>

src/main/java/de/thm/arsnova/annotation/Authenticated.java

+package de.thm.arsnova.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.METHOD)
+public @interface Authenticated {
+
+}

src/main/java/de/thm/arsnova/aop/AuthorizationAdviser.java

+package de.thm.arsnova.aop;
+
+import org.aspectj.lang.annotation.Aspect;
+import org.aspectj.lang.annotation.Before;
+import org.aspectj.lang.annotation.Pointcut;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import de.thm.arsnova.annotation.Authenticated;
+
+@Aspect
+public class AuthorizationAdviser {
+
+	@Pointcut("execution(public * de.thm.arsnova.services.*.*(..))")
+	public void serviceMethods() {}
+	
+	@Autowired
+	@Before("serviceMethods() && @annotation(authenticated) && this(object)")
+	public void check(Authenticated authenticated, Object object) {
+		System.out.println("******************************: " + object.getClass().getName());
+	}
+}

src/main/java/de/thm/arsnova/services/SessionService.java

@@ -33,6 +33,7 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Isolation;
 import org.springframework.transaction.annotation.Transactional;
 
+import de.thm.arsnova.annotation.Authenticated;
 import de.thm.arsnova.dao.IDatabaseDao;
 import de.thm.arsnova.entities.Feedback;
 import de.thm.arsnova.entities.Session;
@@ -68,16 +69,19 @@ public class SessionService implements ISessionService {
 	}
 
 	@Override
+	@Authenticated
 	public Session getSession(String keyword) {
 		return databaseDao.getSession(keyword);
 	}
 
 	@Override
+	@Authenticated
 	public Session saveSession(Session session) {
 		return databaseDao.saveSession(session);
 	}
 
 	@Override
+	@Authenticated
 	public Feedback getFeedback(String keyword) {
 		return databaseDao.getFeedback(keyword);
 	}

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

 <?xml version="1.0" encoding="UTF-8"?>
 <beans xmlns="http://www.springframework.org/schema/beans"
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
-	xmlns:p="http://www.springframework.org/schema/p" xmlns:util="http://www.springframework.org/schema/util"
-	xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:task="http://www.springframework.org/schema/task"
-	xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xmlns:context="http://www.springframework.org/schema/context"
+	xmlns:p="http://www.springframework.org/schema/p"
+	xmlns:util="http://www.springframework.org/schema/util"
+	xmlns:mvc="http://www.springframework.org/schema/mvc"
+	xmlns:task="http://www.springframework.org/schema/task"
+	xmlns:aop="http://www.springframework.org/schema/aop"
+	xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
+		http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
+		http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.1.xsd
 		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
 		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.1.xsd
-		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
-		http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.1.xsd">
+		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">
+
+	<aop:aspectj-autoproxy />
 
 	<bean id="propertyPlaceholderConfigurer"
 		class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"