Get osgi service reference from pure osgi bundle in Liferay portlet

I have successfully register the org.amdatu.mongo service in apche felix like shown below,

Bundle is shown below which export the service which is in active/running state.

Now I want to use this service in my portlet and I have return below code,

 package com.example.portlet;
import com.liferay.portal.kernel.portlet.bridges.mvc.MVCPortlet;

import java.io.IOException;

import javax.portlet.Portlet;
import javax.portlet.PortletException;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;

import org.amdatu.mongo.MongoDBService;
import org.apache.felix.dm.annotation.api.ServiceDependency;
import org.osgi.service.component.annotations.Component;
@Component(
    immediate = true,
    property = {
        "com.liferay.portlet.display-category=category.sample",
        "com.liferay.portlet.instanceable=true",
        "javax.portlet.display-name=loveworld Portlet",
        "javax.portlet.init-param.template-path=/",
        "javax.portlet.init-param.view-template=/view.jsp",
        "javax.portlet.resource-bundle=content.Language",
        "javax.portlet.security-role-ref=power-user,user"
    },
    service = Portlet.class
)
public class LoveworldmvcportletPortlet extends MVCPortlet {
     @ServiceDependency
     private volatile MongoDBService m_mongoDbService;



    @Override
    public void doView(RenderRequest renderRequest, RenderResponse renderResponse)
            throws IOException, PortletException {
        System.out.println( m_mongoDbService);//**getting NULL**
        super.doView(renderRequest, renderResponse);
    }
}

I have tried with annotation @ServiceDependency no luck getting null.My mongoDb server is running fine!!

I have Menifest.mf file as below,

Manifest-Version: 1.0

Bnd-LastModified: 1469380000381

Bundle-ManifestVersion: 2

Bundle-Name: loveworld

Bundle-SymbolicName: loveworld

Bundle-Version: 1.0.0

Created-By: 1.8.0_51 (Oracle Corporation)

Import-Package: com.liferay.portal.kernel.portlet.bridges.mvc;version=

 "[1.0,2)",javax.portlet;version="[2.0,3)",javax.servlet,javax.servlet

 .http,org.amdatu.mongo;version="1.0.0"

Javac-Debug: on

Javac-Deprecation: off

Javac-Encoding: UTF-8

Private-Package: com.example.portlet,content

Provide-Capability: osgi.service;objectClass:List<String>="javax.portl

 et.Portlet",liferay.resource.bundle;bundle.symbolic.name=loveworld;re

 source.bundle.base.name="content.Language"

Require-Capability: osgi.extender;filter:="(&(osgi.extender=jsp.taglib

 )(uri=http://java.sun.com/portlet_2_0))",osgi.extender;filter:="(&(os

 gi.extender=jsp.taglib)(uri=http://liferay.com/tld/aui))",osgi.extend

 er;filter:="(&(osgi.extender=jsp.taglib)(uri=http://liferay.com/tld/p

 ortlet))",osgi.extender;filter:="(&(osgi.extender=jsp.taglib)(uri=htt

 p://liferay.com/tld/theme))",osgi.extender;filter:="(&(osgi.extender=

 jsp.taglib)(uri=http://liferay.com/tld/ui))",osgi.ee;filter:="(&(osgi

 .ee=JavaSE)(version=1.8))"

Service-Component: OSGI-INF/com.example.portlet.LoveworldmvcportletPor

 tlet.xml

Tool: Bnd-3.2.0.201605172007

bnd.bnd file is as below,

Bundle-SymbolicName: loveworld
Bundle-Version: 1.0.0
Import-Package: com.liferay.portal.kernel.portlet.bridges.mvc;version="[1.0,2)",javax.portlet;version="[2.0,3)",javax.servlet,javax.servlet.http,org.amdatu.mongo;version="1.0.0"

Portlet which consume the service is as shown below,

First problem: the service provided by your bundle is of type ManagedServiceFactory. You are trying to inject a service of type MongoDBService. This obviously doesn't match.

Second problem: you should not be trying to directly consume ManagedServiceFactory yourself... it is part of the Config Admin specification, and should only be consumed by Config Admin itself.

Third problem: as Balazs points out, you are using annotations from a mixture of different frameworks: Declarative Services (DS) and Dependency Manager (DM). These cannot be mixed within a single component... pick one!