org.springframework.rules.constraint
Interface Constraint

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All Known Subinterfaces:

BinaryConstraint, PropertyConstraint

All Known Implementing Classes:

AbstractBinaryConstraint, AbstractConstraint, AbstractPropertyConstraint, AbstractTypeResolvablePropertyConstraint, And, ClosureResultConstraint, ComparisonBinaryPredicate, CompoundConstraint, CompoundPropertyConstraint, ConditionalPropertyConstraint, EqualTo, FileChecks.FileExists, FileChecks.FileIsFile, FileChecks.FileIsReadable, GreaterThan, GreaterThanEqualTo, IfTrue, InGroup, LessThan, LessThanEqualTo, Like, MethodInvokingConstraint, NegatedPropertyConstraint, Not, Or, ParameterizedBinaryConstraint, ParameterizedPropertyConstraint, PropertiesConstraint, PropertyInGroupConstraint, PropertyPresent, PropertyValueConstraint, Range, RegexpConstraint, Required, RequiredIfOthersPresent, RequiredIfTrue, Rules, StringLengthConstraint, TypeResolvableConstraint, UniquePropertyValueConstraint, WildcardConstraint, XOr

public interface Constraint

A function object that tests one argument and returns a single boolean result.

A constraint tests a single argument against some conditional expression. For example, a "required" constraint will return true if the provided argument is non-null or empty, false otherwise.

Author:

Keith Donald

Method Summary

boolean

test(Object argument) Test the provided argument against this predicate's condition.

Method Detail

test

boolean test(Object argument)

Test the provided argument against this predicate's condition.

Parameters:

argument - the argument value

Returns:

true if the condition was satisfied, false otherwise