Upload BLOB through Handheld application

Question

Hi,
I am developing NW Mobile Handheld application with 7.10 SP10 IDE. I want to upload an image and send it to DOE. I have created a model in DOE and imported the same in NWDS. The data type for the attachment attribute generated is BLOB as expected. My question is how do i create BLOB object so that i can fill the stream in it by reading a file. In laptop application i could see createBLOB() method in model instance to create BLOB object. But i couldnt see it in model class generated in PDA application.
Regards,
Dhana

Answer 1

Hi Dhana,
Here is the sample code:
     public void onActionCreate (Event wdEvent) {
//@@begin onActionCreate(ServerEvent)
               try {
                    AttahtstModel model = (AttahtstModel) OcaRoot.getInstance().getOcaModel(AttahtstModel.class);
                    AttachmentDataObjectAttachment element = model.createAttachmentDataObjectAttachment();
                    element.setAttachmentId(-1);
                    element.setAttachmentClob("X");
                    element.setAttachmentBlob("X");
                    element.setAttachmentClobActual("This is a new record");
                    BLOB blob = (BLOB) element.getAttachmentBlobActual();
                    InputStream is = blob.getBinaryStream();                    
                    String mobileHome = new File(Configuration.getInstallationDirectory()).getCanonicalPath();
                    String imageName = "image_new.jpg";
                    File imageFile = new File(mobileHome "
MobileApps
demo.sap.comattuiimplementation
Components
com.sap.demo.attui.wd.comp.attachmentcomp.AttachmentComp
"imageName);                    
                    FileInputStream fis = new FileInputStream(imageFile);
                    blob.setBinaryStream(fis, imageFile.length());                    
                    OcaRoot.getInstance().commit();
                    wdContext.currentContextElement().nodeAttachmentDataObjectAttachment().bind(model.getAttachmentDataObjectAttachments());
                    wdContext.reload();
               } catch (Exception e) {
                    e.printStackTrace();
//@@end
Thanks and Regards,
Suma