[GitHub] [lucenenet] monco83 commented on issue #527: ArgumentNullException with BlendedInfixSuggester (v. 4.8.0-beta00014)

[GitBox <gi...@apache.org>]

monco83 commented on issue #527:
URL: https://github.com/apache/lucenenet/issues/527#issuecomment-946485152


   Thank you for your advice.
   
   I changed `PlaceIterator` based on your suggestions and InputArrayEnumerator but still get the same error on DoLookup ('Value cannot be null...').
   ```cs
   class PlaceIterator : IInputEnumerator
   {
       private readonly IEnumerator<PlaceItem> _enumerator;
   
       private PlaceItem _current = null;
       public BytesRef Current => _current != null ? new BytesRef(_current.Key) : null;
   
       public IComparer<BytesRef> Comparer => null;
       public long Weight => 0;
       public BytesRef Payload => null;
       public bool HasPayloads => false;
       public ICollection<BytesRef> Contexts => Array.Empty<BytesRef>();
       public bool HasContexts => false;
   
       public PlaceIterator(IEnumerable<PlaceItem> placeItems)
       {
           _enumerator = placeItems.GetEnumerator();
   
           if (_enumerator.MoveNext())
           {
               first = true;
               _current = _enumerator.Current;
           }
       }
   
       private bool first;
   
       public bool MoveNext()
       {
           if (first && _current != null)
           {
               first = false;
           }
           else if (_enumerator.MoveNext())
           {
               _current = _enumerator.Current;
           }
           else
           {
               _current = null;
               return false;
           }
   
           return true;
       }
   }
   ```
   


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