/**
* Encode the beginning of the given {@link ResourceLineageComponent}.
*
* @param facesContext the JSF context for the current request
* @param component the {@link ResourceLineageComponent} to be encoded
*/
@Override
public void encodeBegin(FacesContext facesContext, UIComponent component) throws IOException {
ResourceLineageComponent resourceLineage = (ResourceLineageComponent) component;
ResponseWriter writer = facesContext.getResponseWriter();
long monitorId = HibernatePerformanceMonitor.get().start();
ResourceManagerLocal resourceManager = LookupUtil.getResourceManager();
List<Resource> ancestorResources =
resourceManager.getResourceLineage(resourceLineage.getResourceId());
HibernatePerformanceMonitor.get().stop(monitorId, "ResourceLineage renderer");
if (ancestorResources.isEmpty()) {
throw new IllegalStateException(
"The list of ancestor resources should always contain at least one resource - the resource whose lineage was requested.");
}
Resource parentResource = ancestorResources.get(ancestorResources.size() - 1);
for (Resource ancestorResource : ancestorResources) {
writer.startElement("a", resourceLineage);
writer.writeAttribute("href", buildURL(ancestorResource), null);
writer.writeText(ancestorResource.getName(), null);
writer.endElement("a");
if (ancestorResource.getId()
!= parentResource.getId()) // separator after every item except the last one
{
writer.writeText(SEPARATOR, null);
}
}
}
