Java tutorial
/* * Copyright (C) 2012-2015 Christian Sterzl <christian.sterzl@gmail.com> * * This file is part of ValidationConstraints. * * ValidationConstraints is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * ValidationConstraints is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with ValidationConstraints. If not, see <http://www.gnu.org/licenses/>. */ package com.vcollaborate.validation.constraints; import org.joda.time.DateMidnight; import org.joda.time.DateTime; import javax.validation.ConstraintValidator; import javax.validation.ConstraintValidatorContext; /** * * @author Christian Sterzl * @since 1.2.4 * */ public class FutureValidator implements ConstraintValidator<Future, Object> { private boolean today = false; /** * {@inheritDoc} * * @see javax.validation.ConstraintValidator#initialize(java.lang.annotation.Annotation) */ public final void initialize(final Future constraintAnnotation) { this.today = constraintAnnotation.today(); } /** * {@inheritDoc} * * @see javax.validation.ConstraintValidator#isValid(java.lang.Object, * javax.validation.ConstraintValidatorContext) */ public final boolean isValid(final Object value, final ConstraintValidatorContext context) { DateTime dateTime = new DateTime(value); if (!today) { return dateTime.isAfterNow(); } return dateTime.isAfter(new DateMidnight()) || dateTime.isEqual(new DateMidnight()); } }