@Reference(“(service.label=TESTCALL)”) Felix SCR annotation error | Community
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Kkkrish
New Participant
March 9, 2017
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@Reference(“(service.label=TESTCALL)”) Felix SCR annotation error

  • March 9, 2017
  • 16 replies
  • 7632 views

am trying to implement an OSGI service which can serve me as ConfigurationFactory the service implementation has just two properties as shown below.

@Property(value="this is service variable property value") static final String MY_SERVICE_VARIABLE = "service.variable"; @Property(description="Label for this MyService") private static final String MY_SERVICE_LABEL = "service.label";

and am retrieving this service configuration data from an OSGI servlet where i am trying to call this service by below code which compiles fine and retrieves data randomly from the multiple service configuration.

@Reference MyService myservice;


But when i wanted to get each configuration data by using the service.label and am calling the service by using below code snippet in my OSGI servlet, while compiling am facing the below Error.

@Reference("(service.label=TESTCALL)") MyService myservice;


cannot find symbol [ERROR] symbol: method value() [ERROR] location: @interface org.apache.felix.scr.annotations.Reference.

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    Best answer by smacdonald2008

    Daniel is correct - i went through this and this works: 

    public class SimpleServlet extends org.apache.sling.api.servlets.SlingAllMethodsServlet {
         private static final long serialVersionUID = 2598426539166789515L;
            
         @Reference(target = "(mailservice.label=InternetA)")
         MailService mailService;    

    We are turning this all into a HELPX Article so all the steps are included. 

    16 replies

    Feike_Visser1
    Feike_Visser1
    Employee
    March 10, 2017

    For those new examples can we use the annotations from org.osgi.service.component.annotations?

    This is the new way for annotations.

      smacdonald2008
      smacdonald2008
      New Participant
      March 9, 2017

      We will have complete article and video out next week - thank you for bringing this Doc Gap to our attention. This is how a great community works! Most of the HELPX content were driven from threads like this. 

      I was able to get both configurable services working based on my posted value to the servlet. 

      K
      KkkrishAuthor
      New Participant
      March 9, 2017

      smacdonald2008 wrote...

      I have emailed you all the code so you can see it while the article (that uses the code that works  perfectly fine) is written. 

       

      Thanks Scott, It really helps.

      Regards,

      Kkkrish

        Daniel_H__A__Li
        Daniel_H__A__Li
        New Participant
        March 9, 2017
        No problem, kk. I've done something similar before. It's also possible to dynamically set the target property (making the value used as a LDAP filter configurable), but I'm far away from my computer to send you a running sample. Regards, Daniel.
        smacdonald2008
        smacdonald2008
        New Participant
        March 9, 2017

        I have emailed you all the code so you can see it while the article (that uses the code that works  perfectly fine) is written. 

        smacdonald2008
        smacdonald2008
        New Participant
        March 9, 2017

        Your running sample is coming here: 

        http://scottsdigitalcommunity.blogspot.ca/2017/03/managing-adobe-experience-manager-osgi.html

        K
        KkkrishAuthor
        New Participant
        March 9, 2017

        Daniel Henrique Alves Lima wrote...

        No problem, kk. I've done something similar before. It's also possible to dynamically set the target property (making the value used as a LDAP filter configurable), but I'm far away from my computer to send you a running sample. Regards, Daniel.

         

        Thanks Daniel, providing running sample would be great help.

        Regards,

        Kk

        Daniel_H__A__Li
        Daniel_H__A__Li
        New Participant
        March 9, 2017
        No problem, kk. I've done something similar before. It's also possible to dynamically set the target property (making the value used as a LDAP filter configurable), but I'm far away from my computer to send you a running sample. Regards, Daniel.
        Var
        Var
        New Participant
        March 9, 2017

        Hi Kkkrish,

        As Daniel mentioned this should work, i have used it in one of my POC learnings, have uploaded the code at my github for your reference.

        @Reference(target = "(service.label=TESTCALL)")

        ~VAr

          K
          KkkrishAuthor
          New Participant
          March 9, 2017

          Daniel Henrique Alves Lima wrote...

          Hi, Kk. As I've said before, you are missing the attribute called "target" in the annotation. @Reference doesn't accept an attribute called "value" (the default one). You must use target = "your LDAP filter to selected a specific service component". It's very straigthforward... Regards, Daniel.

           

          Hi Daniel,

          This works, sorry to post back very late.

          Regards,

          Kkkrish

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