Package tools.refinery.interpreter.matchers.context

Interface IQueryCacheContext

All Known Implementing Classes:
InterpreterEngineImpl
public interface IQueryCacheContext
Provides information on already cached queries to query evaluator backends at runtime.

  • Method Summary

    Modifier and Type
    Method
    Description
    IQueryResultProvider
    getCachingResultProvider(PQuery query)
    Returns a caching result provider for the given query; it must be constructed if it does not exist yet.
    boolean
    isResultCached(PQuery query)
    Checks if there already is a caching result provider for the given query.

  • Method Details

    • isResultCached

      boolean isResultCached(PQuery query)
      Checks if there already is a caching result provider for the given query.

      Returns false if called while the caching result provider of the given query is being constructed in the first place.

    • getCachingResultProvider

      IQueryResultProvider getCachingResultProvider(PQuery query)
      Returns a caching result provider for the given query; it must be constructed if it does not exist yet.

      Caution: behavior undefined if called while the caching result provider of the given query is being constructed. Beware of infinite loops.

      Postcondition: IQueryBackend.isCaching() returns true for the

      invalid reference 
      #getQueryBackend()
      of the returned provider
      Throws:
      InterpreterRuntimeException