Question

I’m building a component for Talend Open Studio for network analysis and I plan to using gephy toolkit, but input data must come from a dataflow (to keep simple let’s say a java collection) while gephy-toolkit let you import only from files (lot of different kinds, actually) or even rdbms, but not from java collections.

how can i build a new simple custom importer (if it can be build at first place. It seems possible, at least for GUI gephi cfr. http://wiki.gephi.org/index.php/HowTo_write_an_import)?

Answer 1

I found the solution by myself: I need to create a Spigot Importer.

• the factory

  @ServiceProvider(service = ImporterBuilder.class)
  public final class TalendCollectionImporterBuilder implements ImporterBuilder {
  
  public String getName() {
         return "Talend Flow Connection Importer";
      }
  
      public SpigotImporter buildImporter() {
         return new TalendCollectionImporter();
      }
  
  }
  

• the importer (stub)

  public class TalendCollectionImporter implements SpigotImporter {
  
          private ContainerLoader container;
          private Report report;
          private ProgressTicket progressTicket;
          private boolean cancel = false;
  
          public boolean execute(ContainerLoader loader) {
              this.container = loader;
              this.report = new Report();
  
              // import stuff
  
              return !cancel;
          }
  
          public ContainerLoader getContainer() {
              return container;
          }
  
          public Report getReport() {
              return report;
          }
  
          public boolean cancel() {
              cancel = true;
              return true;
          }
  
  }