org.eclipse.viatra.query.runtime.localsearch.operations.check

## Class AggregatorCheck

- java.lang.Object
- - org.eclipse.viatra.query.runtime.localsearch.operations.check.AggregatorCheck

- All Implemented Interfaces:
    IPatternMatcherOperation, ISearchOperation

      public class AggregatorCheck
      extends java.lang.Object
      implements ISearchOperation, IPatternMatcherOperation

  Calculates the aggregated value of a column based on the given `AggregatorConstraint`
  Since:
    1.4
  No Extend:
    This class is not intended to be subclassed by clients.

- - ### Nested Class Summary

    - ### Nested classes/interfaces inherited from interface org.eclipse.viatra.query.runtime.localsearch.operations.ISearchOperation

      `ISearchOperation.ISearchOperationExecutor`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `AggregatorCheck(CallInformation information, AggregatorConstraint aggregator, int position)`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `ISearchOperation.ISearchOperationExecutor` | `createExecutor()` Initializes a new operation executor for the given operation.
    `CallInformation` | `getCallInformation()` Returns the precomputed call information associated with the current operation
    `java.util.List<java.lang.Integer>` | `getVariablePositions()`
    `java.lang.String` | `toString()`
    `java.lang.String` | `toString(java.util.function.Function<java.lang.Integer,java.lang.String> variableMapping)` Creates a string representation of the search operation by replacing the variable numbers according to the parameter function.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- - ### Constructor Detail

    - #### AggregatorCheck

          public AggregatorCheck(CallInformation information,
                                 AggregatorConstraint aggregator,
                                 int position)

      Since:
        1.7

  - ### Method Detail

    - #### createExecutor

          public ISearchOperation.ISearchOperationExecutor createExecutor()

      Description copied from interface: `ISearchOperation`
      Initializes a new operation executor for the given operation. Repeated calls must return different executor instances.
      Specified by:
        `createExecutor` in interface `ISearchOperation`

    - #### getVariablePositions

          public java.util.List<java.lang.Integer> getVariablePositions()

      Specified by:
        `getVariablePositions` in interface `ISearchOperation`
      Returns:
        the ordered list of the variable numbers that are affected by the search operation

    - #### toString

          public java.lang.String toString()

      Overrides:
        `toString` in class `java.lang.Object`

    - #### toString

          public java.lang.String toString(java.util.function.Function<java.lang.Integer,java.lang.String> variableMapping)

      Description copied from interface: `ISearchOperation`
      Creates a string representation of the search operation by replacing the variable numbers according to the parameter function. It is expected that the provided function does return a non-null value for each variable index that is returned by `ISearchOperation.getVariablePositions()`; otherwise a `NullPointerException` will be thrown during the calculation of the string.
      Specified by:
        `toString` in interface `ISearchOperation`

    - #### getCallInformation

          public CallInformation getCallInformation()

      Description copied from interface: `IPatternMatcherOperation`
      Returns the precomputed call information associated with the current operation
      Specified by:
        `getCallInformation` in interface `IPatternMatcherOperation`