How to use

setAttachType

method

in

de.tudarmstadt.ukp.clarin.webanno.export.model.ExportedAnnotationLayer

layerToExLayers.get(layer).setAttachType(
    new ExportedAnnotationLayerReference(layer.getAttachType().getName()));

layerToExLayers.get(layer).setAttachType(
    new ExportedAnnotationLayerReference(layer.getAttachType().getName()));

private IResourceStream exportLayerJson()
{
  try {
    AnnotationLayer layer = getModelObject();
    List<ExportedAnnotationLayer> exLayers = new ArrayList<>();
    ExportedAnnotationLayer exMainLayer = ImportUtil.exportLayerDetails(null, null,
        layer, annotationService);
    exLayers.add(exMainLayer);
    // If the layer is attached to another layer, then we also have to export
    // that, otherwise we would be missing it during re-import.
    if (layer.getAttachType() != null) {
      AnnotationLayer attachLayer = layer.getAttachType();
      ExportedAnnotationLayer exAttachLayer = ImportUtil.exportLayerDetails(null,
          null, attachLayer, annotationService);
      exMainLayer.setAttachType(
          new ExportedAnnotationLayerReference(exAttachLayer.getName()));
      exLayers.add(exAttachLayer);
    }
    return new InputStreamResourceStream(new ByteArrayInputStream(
        JSONUtil.toPrettyJsonString(exLayers).getBytes("UTF-8")));
  }
  catch (Exception e) {
    error("Unable to generate the JSON file: " + ExceptionUtils.getRootCauseMessage(e));
    ProjectLayersPanel.LOG.error("Unable to generate the JSON file", e);
    RequestCycle.get().find(IPartialPageRequestHandler.class)
        .ifPresent(handler -> handler.addChildren(getPage(), IFeedback.class));
    return null;
  }
}

private IResourceStream exportLayerJson()
{
  try {
    AnnotationLayer layer = getModelObject();
    List<ExportedAnnotationLayer> exLayers = new ArrayList<>();
    ExportedAnnotationLayer exMainLayer = ImportUtil.exportLayerDetails(null, null,
        layer, annotationService);
    exLayers.add(exMainLayer);
    // If the layer is attached to another layer, then we also have to export
    // that, otherwise we would be missing it during re-import.
    if (layer.getAttachType() != null) {
      AnnotationLayer attachLayer = layer.getAttachType();
      ExportedAnnotationLayer exAttachLayer = ImportUtil.exportLayerDetails(null,
          null, attachLayer, annotationService);
      exMainLayer.setAttachType(
          new ExportedAnnotationLayerReference(exAttachLayer.getName()));
      exLayers.add(exAttachLayer);
    }
    return new InputStreamResourceStream(new ByteArrayInputStream(
        JSONUtil.toPrettyJsonString(exLayers).getBytes("UTF-8")));
  }
  catch (Exception e) {
    error("Unable to generate the JSON file: " + ExceptionUtils.getRootCauseMessage(e));
    ProjectLayersPanel.LOG.error("Unable to generate the JSON file", e);
    RequestCycle.get().find(IPartialPageRequestHandler.class)
        .ifPresent(handler -> handler.addChildren(getPage(), IFeedback.class));
    return null;
  }
}