Access OSGI ser­vice from Sightly WCMUsePojo | AEM 6.3 | Community
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neerajg29767140
Level 2
September 28, 2017

Access OSGI ser­vice from Sightly WCMUsePojo | AEM 6.3

  • September 28, 2017
  • 5 replies
  • 14500 views

Create AEM 6.3 component making use of WCMUsePojo accessing OSGI Service.


Step 1: Create an interface name OSGITestInterface.java that will be implemented by service impl.


public interface OSGITestInterface {

String getOSGIName();

String getOSGIDesc();

String getOSGIuse();

String getOSGIData();

}


Step 2: Create a Interface Implementation class name OSGITestInterfaceImpl.java


import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.apache.felix.scr.annotations.Component;

import org.apache.felix.scr.annotations.Service;


@Component

@Service

public class OSGITestInterfaceImpl implements OSGITestInterface {


Logger logger = LoggerFactory.getLogger(OSGITestInterfaceImpl.class);


@Override

public String getOSGIName() {

  return "Test Service";

}


@Override

public String getOSGIDesc() {

  return "AEM OSGI Service";

}


@Override

public String getOSGIuse() {

  return "OSGI Service data";

}

        @Override

public String getOSGIData() { 

  String name = this.getOSGIName();

  String desc = this.getOSGIDesc();

  String use = this.getOSGIuse();

  return name + desc + use;

}


}


Step 3: Create Test Component and use below sightly code in component html.


Fetch values from OSGI Service using WCMSUepojo.

    <sly data-sly-use.info="com.test.utils.TestPojoComp"></sly>

    ${info.details}

</div>


Step 4: Write helper class extending WCmUsePojo.


import org.slf4j.Logger;

import org.slf4j.LoggerFactory;


import com.adobe.cq.sightly.WCMUsePojo;


public class TestPojoComp extends WCMUsePojo {

Logger logger = LoggerFactory.getLogger(TestPojoComp.class);

protected String detail;


@Override

  public void activate() {  


OSGITestInterface service = getSlingScriptHelper().getService(OSGITestInterface.class);

    detail = service.getOSGIData();

  }


  public String getDetails() {

    return this.detail;

  }

}


Step 5: Create webpage using any of existing template. Drag and drop newly created component into the page.


Validate output.

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5 replies

Ratna_Kumar
Level 10
September 29, 2017

Good Community work!!

~Ratna

smacdonald2008
Level 10
September 29, 2017

Nice summary - we show this pattern here - where the service we hook into from WCMUsePojo queries the JCR -- Scott's Digital Community: Creating an AEM HTL component that queries the JCR

Feike_Visser1
Adobe Employee
Adobe Employee
September 29, 2017

You can also use the OSGi-service directly in HTL, so in this case no need for a wrapper-class.

AdobeID24
Level 5
September 19, 2018

How we can use services directly in Sightly?

smacdonald2008
Level 10
September 26, 2018

I tried also like giving my class name starting with capital but then it didnt work in aem...

below didnt work:

<sly data-sly-use.search="amitsample.core.filters.develope">

   ${search.details}

</p>

error:

Class can not be instantiated

this worked :

<sly data-sly-use.search="amitsample.core.filters.Develope">

   ${search.details}

</p>


See this artilce for AEM - it uses WCMUsePojo --

Creating an Adobe Experience Manager 6.4 HTL component that uses the WCMUsePojo API

That will show you how to hook into Java class from HTL.

Prabhat_Jain
Level 2
September 10, 2018

Anyone knows why @Reference annotation won't work ?

Feike_Visser1
Adobe Employee
Adobe Employee
September 10, 2018

this only works in OSGi components, WCMUsePojo is not an OSGi-component

Prabhat_Jain
Level 2
September 10, 2018

Thanks 4 the answer

AdobeID24
Level 5
September 19, 2018

wow ..well explained

Jitendra_S_Toma
Level 10
September 19, 2018

You can get service reference using request object as well.

How to get OSGI Service reference in AEM?