# Package org.eclipse.incquery.runtime.localsearch.operations.extend

- Class Summary
  Class | Description
  --- | ---
  CountOperation | Calculates the count of matches for a called matcher
  ExpressionEval | Calculates the result of an expression and stores it inside a variable for future reference.
  ExtendConstant | This operation handles constants in search plans by binding a variable to a constant value.
  ExtendOperation<T> |
  ExtendToEStructuralFeatureSource | Iterates over all sources of `EStructuralFeature` using an `EMF-IncQuery Base indexer`.
  ExtendToEStructuralFeatureTarget | Iterates over all sources of `EStructuralFeature` using an `EMF-IncQuery Base indexer`.
  IterateOverChildren | Iterates all child elements of a selected EObjects.
  IterateOverContainers | Iterates all child elements of a selected EObjects.
  IterateOverEClassInstances | Iterates all available `EClass` instances using an `EMF-IncQuery Base indexer`.
  IterateOverEDatatypeInstances | Iterates over all `EDataType` instances using an `EMF-IncQuery Base indexer`.
  IterateOverEStructuralFeatureInstances | Iterates all available `EStructuralFeature` elements using an `EMF-IncQuery Base indexer`.