Using XS to upload a binary file?

Hi,

Using XS, I am trying to write a web service that allows for a binary file to be uploaded to my repository.  After a quite a lot of trial and error, I finally figured out that using a mulitpart POST request, I could use the following code to receive the file contents on the server side:

function getFile() {          var file = {};          try {                    var contents = "";                    var i;                    for (i = 0; i < $.request.entities.length; i++) {                              if ($.request.entities[i].body) {                                        contents += $.request.entities[i].body.asString();                              }                    }                      file.type = $.request.entities[0].contentType;                    file.contents = contents;          } catch (e) {                    throw "Failed to upload file: EXCEPTION=" + e.message;          }          return file;
}

Using the debugger, I can see that file.contents seems to properly contain the binary contents of the uploaded file.

However, I have been unable to get the contents transferred to the HANA repository.  Here is the code which updates an BLOB field with the uploaded content:

function updateBlobField(id, blobFile) {           var conn = null;           var preparedStatement = null;           try {                conn = $.db.getConnection();                var sql = 'update "MYTABLE" set "BLOBFIELD"=? where "ID"=?';                preparedStatement = conn.prepareStatement(sql);                preparedStatement.setBlob(1, blobFile.contents);                preparedStatement.setInteger(2, id);                var count = preparedStatement.executeUpdate();                if (count !== 1) {                  throw "Failed to update blob field";                }                conn.commit();           } catch (e) {                throw "Failed to update blob field: EXCEPTION=" + e.message;           } finally {                if (preparedStatement) { preparedStatement.close(); }                if (conn) { conn.close(); }           }
}

When I execute the code, I get the following exception:

PreparedStatement.setBlob: expected blob for second argument, but got: string

I have tried to use setClob instead of setBlob.  Doing so, the code executes,but as I expected, incorrect data is written to the repository.

According to the setBlob documentation (see http://help.sap.com/hana/SAP_HANA_XS_JavaScript_Reference_en/$.db.PreparedStatement.html) it should be able to accept a string parameter as well as an ArrayBuffer.  But this is clearly not working as documented.

Since, I could not use a string, I thought I would convert the string into a ArrayBuffer.  But I could not figure out how to even create an ArrayBuffer object (HANA Studio complained that ArrayBuffer was used before it was declared and I found little documentation), let alone do the conversion.

Any help would be greatly appreciated.

Thanks,

David