Direct Download of Attachments

A method, BoSfReplicationCallback.requestMandatoryAttachmentDataAsync, is called by the app to retrieve a list of the requested attachments. The BoSfReplicationCallback.requestMandatoryAttachmentDataAsync method uses a helper method, Facade.getSfListOfAvailableAttachmentsAsync, to read the list of all available attachments that can be downloaded.

Note This method is optional and can be used to avoid long sync times during visits.

The array of the attachment information that is returned is:

• Id: Unique ID of the attachment.
• LastModifiedDate: Timestamp of last modification as Unix epoch.
• Name: Name of the file.
• Body: Path of the attachment.
• BodyLength: Size of attachment in bytes.

Sample Implementation of the Method

var deferred = when.defer();
Facade.getSfListOfAvailableAttachmentsAsync().then(
     function(attachmentData) {
         AppLog.info("Number of available attachments: ", attachmentData.length);
         var downloadRequest = [];
         for (var idx = 0; idx < attachmentData.length; ++idx){
              // Request only files that are larger than 2048
              if (attachmentData[idx].BodyLength > 2048){
                   AppLog.info("Requesting: ", attachmentData[idx].Body, " with a size of ", attachmentData[idx].BodyLength);
                   downloadRequest.push(attachmentData[idx]);
               }
          }
          deferred.resolve(downloadRequest);
       }, function(error){
          AppLog.error("Could not retrieve attachment list.", error);
          deferred.resolve([]);
       }
   );
var promise = deferred.promise;