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

## Interface IAggregatorNode

- All Known Implementing Classes:
    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 and Description
    --- | ---
    `Indexer` | `getAggregatorOuterIdentityIndexer(int resultPositionInSignature)`
    `Indexer` | `getAggregatorOuterIndexer()`

- - ### Method Detail

    - #### getAggregatorOuterIndexer

          Indexer getAggregatorOuterIndexer()

    - #### getAggregatorOuterIdentityIndexer

          Indexer getAggregatorOuterIdentityIndexer(int resultPositionInSignature)