Package org.eclipse.viatra.query.runtime.rete.aggregation

## Interface IAggregatorNode

- All Known Implementing Classes:
    `AbstractColumnAggregatorNode`, `ColumnAggregatorNode`, `CountNode`, `IndexerBasedAggregatorNode`

      public interface IAggregatorNode

  Expresses that aggregators expose specialized non-enumerable indexers for outer joining.
  Since:
    1.4

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `Indexer` | `getAggregatorOuterIdentityIndexer​(int resultPositionInSignature)` |
    `Indexer` | `getAggregatorOuterIndexer()` |

- - ### Method Detail

    - #### getAggregatorOuterIndexer

          Indexer getAggregatorOuterIndexer()

    - #### getAggregatorOuterIdentityIndexer

          Indexer getAggregatorOuterIdentityIndexer​(int resultPositionInSignature)