Hello @martin.bjorling

RFA Java provides the following methods in OMMDataBuffer interface that help to interpret partial update:

• hasPartialUpdates() Returns true if the buffer contains partial update sequences. This is only applcable to RMTES.
• horizontalPosition() Returns an offset of this partial sequence. This is only applicable to RMTES.
• partialUpdateIterator() Returns Iterator of OMMDataBuffer of partial field substrings. This is only applicable to RMTES.

The example application to interpret partial update is Viewer located in <RFA Java Package>\Examples\com\reuters\rfa\example\omm\gui\viewer. setFirstField(..) in class FieldListValues demonstrates how to interpret partial update as shown below:

OMMData data = fentry.getData(fiddef.getOMMType());
if (data.getType() == OMMTypes.RMTES_STRING)
{
   OMMDataBuffer db = (OMMDataBuffer)data;
   if (db.hasPartialUpdates())
   {
      Iterator<?> iter = ((OMMDataBuffer)data).partialUpdateIterator();
      StringBuilder newValue = new StringBuilder(fiddef.getMaxOMMLengthAsInt());
      newValue.append(field.getValue().toString());
      while (iter.hasNext())
      {
         OMMDataBuffer partial = (OMMDataBuffer)iter.next();
         String partialString = partial.toString();
         int hpos = partial.horizontalPosition();
         int end = hpos + partialString.length();
         newValue.replace(hpos, end, partialString);
       }
      field.setValue(newValue.toString(), fentry.getData().getEncodedLength(), fentry.getData().isBlank());
   }

What you see is called partial field updates.

It is a special feature which is sometimes used on longer fields of type RMTES_STRING. Rather then updating all of the say 80 chars, only a fraction of them are updated. This is a bit more efficient and has the benefit that a visual display can give some kind of indication to a human exactly which parts of the string has updated.

Just search the documentation for "partial" and you'll see what I mean. There's support for it in the API.

So for example:

hpos=19, "July"

means that starting from position 19 in the string, then "July" should replace whatever is currently at those positions in the string.

A single partial update may contain multiple single updates.

Thank you very much for your info. I'll try it out.

Hi, great I can now catch the pos and update. :-)
But. I have now the problem that I can't encode the ItemName of the 2nd,... updates?