Asset metatadata information in a java process step

Question

We need to write a java process in a process step of a workflow. We need to do certain actions based on the asset being referred in the workflow.
I am not able to fetch the metadata of the asset(example image). Please share the code for fetching the
metadata for an asset.
Thanks,
Sachin

Answer 1

Hi Sham,
I have tried using ResourceResolverFactory also, but it has not resolved the issue.
When ever I am trying to take the ResourceResolver object from ResourceResolverFactory, I am getting NullPointerException.
Below is the code I am using, Please suggest if I am making any mistake.
@Component(metatype = true, immediate = true)
@Service
@Properties({
@Property(name = Constants.SERVICE_DESCRIPTION, value = "ForTestingProcesses"),
@Property(name = Constants.SERVICE_VENDOR, value = "abc"),
@Property(name = "process.label", value = "TestProcess")})
public class TestCode  implements WorkflowProcess
          private static final Logger log = LoggerFactory.getLogger(TestCreateAssetWorkflow.class);
          @Reference(policy = ReferencePolicy.STATIC)
           private ResourceResolverFactory ResolverFactory;
          ResourceResolver resourceResolver = null;
          public void execute(WorkItem item, WorkflowSession arg1, MetaDataMap arg2)
                              throws WorkflowException {
          try{
                    String path=item.getWorkflowData().getPayload().toString();
                    log.info("TestCode Path::"+path);
                    resourceResolver = ResolverFactory.getAdministrativeResourceResolver(arg2);
                    log.info("Path2::"+path);
                    Resource res=resourceResolver.getResource(path);
                    log.info("Path3::"+path);
                    Asset damAsset = DamUtil.resolveToAsset(res);
                    log.info("damasset::"+damAsset);
  }catch(Exception e){
                              log.info("Stack Trace::"+e);
if I include the line  @Reference(policy = ReferencePolicy.STATIC), It is giving error that the process is not found. If I am excluding the mentioned line, I am getting NullPointer exception.
Please suggest.
Thanks,
Sachin