Package cdc.validation.checkers

Class RefChecker<T>

java.lang.Object
cdc.validation.checkers.RefChecker<T>
Type Parameters:
T - The value type.
All Implemented Interfaces:
Checker<T>, Predicate<T>
public final class RefChecker<T> extends Object implements Checker<T>
Checker that lazily delegates its task to a named checker.

The delegate must be compliant with the type of this checker.

Author:
Damien Carbonne

  • Constructor Details

    • RefChecker

      public RefChecker(Class<T> valueClass, String name)

  • Method Details

    • getName

      public String getName()
      Returns:
      The delegate name.

    • resolve

      public void resolve(cdc.util.lang.FailureReaction reaction)
      Resolves the delegate.

      The delegate is searched only the first time this method is called.

      Parameters:
      reaction - The reaction to adopt if resolution fails.

    • getResolutionStatus

      public cdc.util.refs.ResolutionStatus getResolutionStatus()

    • getDelegate

      public Checker<? super T> getDelegate()
      Returns:
      The associated delegate, possibly null if resolution is not yet done or failed.

    • getValueClass

      public Class<T> getValueClass()
      Specified by:
      getValueClass in interface Checker<T>
      Returns:
      The class of tested values.

    • test

      public boolean test(T value)
      Specified by:
      test in interface Checker<T>
      Specified by:
      test in interface Predicate<T>

    • explain

      public String explain(boolean result, String argName)
      Description copied from interface: Checker
      Explains the conditions at which a positive or negative result is obtained.
      Specified by:
      explain in interface Checker<T>
      Parameters:
      result - The result to explain.
      argName - The argument name to use in explanations.
      Returns:
      A string explaining the conditions leading to result.