QueryElementFactHandle handle = null;
ProtobufMessages.FactHandle _handle = null;
if( context.getReaderContext() != null ) {
Map<TupleKey, QueryElementContext> map = (Map<TupleKey, QueryElementContext>) context.getReaderContext().nodeMemories.get( node.getId() );
if( map != null ) {
QueryElementContext _context = map.get( PersisterHelper.createTupleKey( leftTuple ) );
if( _context != null ) {
_handle = _context.results.removeFirst();
}
}
}