when spring return a proxy we need to unwrap it to obtain original class object

annotation/src/main/java/lcsb/mapviewer/annotation/cache/PermanentDatabaseLevelCache.java

@@ -14,6 +14,8 @@ import java.util.concurrent.ThreadFactory;
 import javax.annotation.PostConstruct;
 
 import org.apache.log4j.Logger;
+import org.springframework.aop.framework.Advised;
+import org.springframework.aop.support.AopUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.ApplicationContextAware;
@@ -141,6 +143,7 @@ public class PermanentDatabaseLevelCache extends XmlParser
       try {
         Class<?> clazz = Class.forName(type.getClassName());
         Object object = applicationContext.getAutowireCapableBeanFactory().createBean(clazz);
+        object = unwrapProxy(object);
         if (object instanceof CachableInterface) {
           cachableInterface = (CachableInterface) object;
         } else {
@@ -182,6 +185,29 @@ public class PermanentDatabaseLevelCache extends XmlParser
 
   }
 
+  /**
+   * http://forum.spring.io/forum/spring-projects/aop/52011-need-to-unwrap-a-proxy-to-get-the-object-being-proxied
+   * 
+   * @param bean
+   * @return
+   * @throws Exception
+   */
+  private final Object unwrapProxy(Object bean) throws Exception {
+
+    /*
+     * If the given object is a proxy, set the return value as the object being
+     * proxied, otherwise return the given object.
+     */
+    if (AopUtils.isAopProxy(bean) && bean instanceof Advised) {
+
+      Advised advised = (Advised) bean;
+
+      bean = advised.getTargetSource().getTarget();
+    }
+
+    return bean;
+  }
+
   /**
    * This class represents new thread task for adding entry to database.
    *