How to extract a field from Binary object

Question

Hi Guys,
I have a Binary object in custom aggregator and I would like to extract a field from the Binary object without de-serializing the Binary object. I know this can be done but figure out how.. Appreciate your help.
Have tried this
PofValue value = PofValueParser.parse(Binary, (PofContext) BinaryEntry.getSerializer());
PofValue child = value.getChild(1);
Object value = child1.getValue();
but no luck.
Thanks
D

Answer 1

Hi JK,
Thanks..  I have Binary  and tried
PofValue pofValue = PofValueParser.parse(binary, pofContext);
PofNavigator path = new SimplePofPath(1);
PofValue target = path.navigate(pofValue);
Object value = target != null ? target.getValue() : null;
but no luck.. I must be missing something.
Basically, am trying to do cache joins using aggregator and data affinity. Sample code snippet
@Override
  public Object aggregate(Set values) {
  List extractedValues = new ArrayList();
  for (Map.Entry entry : (Set<Map.Entry>)values) { 
   try {
    //these are BinaryEntries in TESTCACHE1
    BinaryEntry binaryEntry = (BinaryEntry)entry;  
    Long compId = (Long)binaryEntry.extract(new KeyExtractor("getComponentId")); 
    Long contId = (Long)binaryEntry.extract(new KeyExtractor("getPartyId"));
    BackingMapContext backingMapContext = binaryEntry.getContext().getBackingMapContext("TESTCACHE2");  
    ObservableMap backingMap = backingMapContext.getBackingMap();
    MapIndex mapIndex = backingMapContext.getIndexMap().get(new KeyExtractor("getComponentId"));   
    com.tangosol.util.InflatableSet keySet = (com.tangosol.util.InflatableSet) mapIndex.getIndexContents().get(compId);
    Binary object = null;
    for(Object key : keySet ) { 
     object = (Binary)backingMap.get(key);    
    PofNavigator  path  = new SimplePofPath(2);
    PofValue value = PofValueParser.parse(object,  (PofContext) binaryEntry.getSerializer());
    PofValue  target = path.navigate(value);  
    Object extractedValue = target != null ? target.getValue(): null;
    extractedValues.add(extractedValue);
   } catch (Throwable t) {
    log.error("Exception in aggregate method ", t);
    throw new RuntimeException("Exception in aggregate method", t);
  return extractedValues;