org.eclipse.viatra.query.runtime.matchers.backend

## Interface IUpdateable

-     public interface IUpdateable

  Internal interface for the query backend to singal an update to a query result.
  Since:
    0.9

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `update(Tuple updateElement, boolean isInsertion)` This callback method must be free of exceptions, even `RuntimeException`s (though not `Error`s).

- - ### Method Detail

    - #### update

          void update(Tuple updateElement,
                      boolean isInsertion)

      This callback method must be free of exceptions, even `RuntimeException`s (though not `Error`s).
      Parameters:
        `updateElement` - the tuple that is changed
        `isInsertion` - true if the tuple appeared in the result set, false if disappeared from the result set