[jira] [Created] (KARAF-6727) @Reference always null in business delegate

["Nicolas Duminil (Jira)" <ji...@apache.org>]

Nicolas Duminil created KARAF-6727:
--------------------------------------

             Summary: @Reference always null in business delegate
                 Key: KARAF-6727
                 URL: https://issues.apache.org/jira/browse/KARAF-6727
             Project: Karaf
          Issue Type: Question
          Components: karaf
    Affects Versions: 4.2.8
            Reporter: Nicolas Duminil


Hello,

In a REST service deployed on Karaf 4.28, I'm trying to use a business delegate. The REST service starts well and I'm able to display the WADL, etc. But the business delegate reference is always null. Here is a code excerpt:

    {color:#9e880d}@Path{color}({color:#067d17}"/customers"{color})
{color:#9e880d}    @Produces{color}({color:#067d17}"application/xml"{color})
{color:#9e880d}    @Consumes{color}({color:#067d17}"application/xml"{color})
{color:#0033b3}    public class {color}{color:#000000}CustomerAPI
{color}    {
      {color:#9e880d}@Reference
{color}      {color:#0033b3}private {color}{color:#000000}CustomerDataService {color}{color:#871094}customerDataService{color};

      {color:#9e880d}@GET
{color}      {color:#0033b3}public {color}{color:#000000}Response {color}{color:#00627a}getCustomers{color}()
      {
        {color:#0033b3}return {color}{color:#000000}Response{color}.ok().entity({color:#000000}Objects{color}.requireNonNull({color:#871094}customerDataService{color}, {color:#067d17}"CustomerDataService is null"{color}).getCustomers().stream().map({color:#000000}CustomerDto{color}:: {color:#0033b3}new{color}).collect({color:#000000}Collectors{color}.toList())).build();
      }
    ...
    }

Here above, an NPE is raised as the customersDataService property is null. The logfile displays the following:

    java.lang.NullPointerException: CustomerDataService is null
    at java.util.Objects.requireNonNull(Objects.java:246) ~[?:?]
    at  fr.simplex_software.red_hat.fuse.osgi.standalone.customers.rest.CustomerAPI.getCustomers(CustomerAPI.java:26) ~[?:?]

...

What did I miss here ? Many thanks in advance.

Kind regards,

Nicolas



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