Get document PDF preview in Alfresco

Alfresco is able to transform document types.
For example transform MSWord doc file into PDF

The quick way to access PDF preview (or of any other available type) is a ThumbnailService

An example:

import org.alfresco.service.cmr.thumbnail.ThumbnailService;
//...
public class YourClass{
  //...
  @Autowired
  ThumbnailService thumbnailService;
  //...
  public yourMethod {
      NodeRef documentNodeRef = new NodeRef(
          request.getParameter("nR")
      );
      NodeRef pdfPreviewNodeRef = null;
      //...

      pdfPreviewNodeRef = thumbnailService.getThumbnailByName(
          documentNodeRef, ContentModel.PROP_CONTENT, "pdf"
      );
      if (pdfPreviewNodeRef==null) {
        //generate a new PDF preview if one is not available yet
        pdfPreviewNodeRef = thumbnailService.createThumbnail(
            documentNodeRef, ContentModel.PROP_CONTENT,
            "application/pdf", new SWFTransformationOptions(), "pdf"
        );
      }

      //...
  }
  //...
}

Alfresco Javascript webscript Debuggers

Just found that there are actually two of them:

One for the Alfresco repository debugging:
/alfresco/service/api/javascript/debugger
(may be http://127.0.0.1:8080/alfresco/service/api/javascript/debugger)

And one for the Alfresco share debugging:
/share/page/api/javascript/debugger
(may be http://127.0.0.1:8081/share/page/api/javascript/debugger)

Webscript indexes accordingly are:
/alfresco/service/index
(http://127.0.0.1:8080/alfresco/service/index)

and

/share/service/index
(http://127.0.0.1:8081/share/service/index)


Debuggers sometimes won't catch webscripts evaluated: you may need to clean up the project and do "clear dependency caches" and "refresh web scripts" on webscript indexes service pages.