Package cdc.util.validation.checkers

Class RefChecker<T>

java.lang.Object

cdc.util.validation.checkers.RefChecker<T>

Type Parameters:

T - The value type.

All Implemented Interfaces:

Checker<T>, java.util.function.Predicate<T>

public final class RefChecker<T>
extends java.lang.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 Summary

Constructors

Constructor	Description
RefChecker(java.lang.Class<T> valueClass, java.lang.String name)

Method Summary

Modifier and Type	Method	Description
java.lang.String	explain(boolean result, java.lang.String argName)	Explains the conditions at which a positive or negative result is obtained.
Checker<? super T>	getDelegate()
java.lang.String	getName()
cdc.util.refs.ResolutionStatus	getResolutionStatus()
java.lang.Class<T>	getValueClass()
void	resolve(cdc.util.lang.FailureReaction reaction)	Resolves the delegate.
boolean	test(T value)

Methods inherited from interface cdc.util.validation.checkers.Checker

after, after, afterRaw, and, andRaw, cast, cast, explain, explain, fromConverter, fromFunction, negate, or, orRaw, testAndExplain, testAndExplain

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.Predicate

and, isEqual, or

Constructor Detail

RefChecker

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

Method Detail

getName

public java.lang.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 java.lang.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 java.util.function.Predicate<T>

explain

public java.lang.String explain(boolean result,
                                java.lang.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.