org.eclipse.viatra.query.runtime.localsearch.planner

## Class LocalSearchRuntimeBasedStrategy

- java.lang.Object
- - org.eclipse.viatra.query.runtime.localsearch.planner.LocalSearchRuntimeBasedStrategy

-     public class LocalSearchRuntimeBasedStrategy
      extends java.lang.Object

  This class contains the logic for local search plan calculation based on costs of the operations. Its name refers to the fact that the strategy tries to use as much information as available about the model on which the matching is initiated. When no runtime info is available, it falls back to the information available from the metamodel durint operation cost calculation. The implementation is based on the paper "Gergely Varró, Frederik Deckwerth, Martin Wieber, and Andy Schürr: An algorithm for generating model-sensitive search plans for pattern matching on EMF models" (DOI: 10.1007/s10270-013-0372-2)
  No Reference:
    This class is not intended to be referenced by clients.

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `LocalSearchRuntimeBasedStrategy()`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `protected org.eclipse.emf.ecore.EClassifier` | `extractClassifierLiteral(java.lang.String packageUriAndClassifierName)`
    `SubPlan` | `plan(PBody pBody, java.util.Set<PVariable> initialBoundVariables, IQueryBackendContext context, LocalSearchHints configuration)` The implementation of a local search-based algorithm to create a search plan for a flattened (and normalized) PBody

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

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

- - ### Constructor Detail

    - #### LocalSearchRuntimeBasedStrategy

          public LocalSearchRuntimeBasedStrategy()

  - ### Method Detail

    - #### plan

          public SubPlan plan(PBody pBody,
                              java.util.Set<PVariable> initialBoundVariables,
                              IQueryBackendContext context,
                              LocalSearchHints configuration)

      The implementation of a local search-based algorithm to create a search plan for a flattened (and normalized) PBody
      Parameters:
        `pBody` - for which the plan is to be created
        `initialBoundVariables` - variables that are known to have already assigned values
        `context` - the backend context
        `configuration` - the planner configuration
      Returns:
        the complete search plan for the given `PBody`
      Since:
        1.5

    - #### extractClassifierLiteral

          protected org.eclipse.emf.ecore.EClassifier extractClassifierLiteral(java.lang.String packageUriAndClassifierName)