Java tutorial
/* * SURITTEC * Copyright 2014, SURITTEC CONSULTORIA LTDA, * and individual contributors as indicated by the @authors tag * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ package br.com.surittec.suricdi.core.validation; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; import javax.validation.ConstraintValidator; import javax.validation.ConstraintValidatorContext; import org.apache.commons.lang.StringUtils; import br.com.surittec.suricdi.core.validation.constraint.MinDate; public class MinDateValidator implements ConstraintValidator<MinDate, Date> { private boolean nullable; private Date minDate; private SimpleDateFormat formatter = new SimpleDateFormat("dd/MM/yyyy"); @Override public boolean isValid(Date value, ConstraintValidatorContext context) { if (nullable && value == null) return true; if (minDate == null || !minDate.after(value)) return true; return false; } @Override public void initialize(MinDate constraintAnnotation) { nullable = constraintAnnotation.nullable(); try { if (StringUtils.isNotBlank(constraintAnnotation.minDate())) minDate = formatter.parse(constraintAnnotation.minDate()); } catch (ParseException e) { e.printStackTrace(); } } }