net.markenwerk.commons.interfaces

Interface Predicate<Subject>

Type Parameters:

Subject - The type of the values to perform tests on.

public interface Predicate<Subject>

A Predicate is used to perform arbitrary test on test subject. It is usually used in a scenario where some sort of data provider wants to offer the possibility to filter values before delivery or during the data processing.

Since:

1.0.0

Author:

Torsten Krause (tk at markenwerk dot net)

Method Summary

Modifier and Type	Method and Description
boolean	test(Subject subject) Performs the test on a given test subject.

Method Detail

test

boolean test(Subject subject)
      throws EvaluationException

Performs the test on a given test subject.

It lies in the responsibility of the caller, to handle unwanted null-values by replacing them with a sensible default value or throwing a NullPointerException.

Implementers should catch any exception and wrap them in a EvaluationException.

Parameters:

subject - The test subject.

Returns:

Whether the test subject passed the test.

Throws:

EvaluationException - If testing the test subject failed.